117results about How to "Guaranteed monitoring accuracy" patented technology

The invention relates to a real-time dynamic 3D water balance monitoring system of a power plant and a working method of the system. The system is characterized by comprising a data collection module, a data transmission module, a data storage module, a monitoring center and a data analysis and application module, wherein the data collection module collects flow data, and the data transmission module returns data collected by the data collection module in real time. Water volume data of different collection points is collected by the data collection module, transmitted to the data storage module by the data transmission module, and further transmitted to the data analysis and application module by the data storage module. The system and method have the advantages that the relation between water volume change and generating load is found via data analysis, the imbalance rate is calculated, and thus, scientific basis is provided for planning water-saving measures of the power plant.

The invention discloses a positioning method for Beidou short baseline single frequency single epoch solution. The method comprises steps of (1) Beidou single frequency pseudorange single point positioning, (2) data preprocessing, (3) establishment of a Kalman filter precision n-dimension dynamic model based on prior historical data and consideration of influences of a signal-to-noise ratio and asatellite elevation angle on an observation value, (4) model initialization, (5) Beidou single-frequency part ambiguity estimation to obtain a fixed value of each hierarchical ambiguity, (6) cycle-slip epoch-by-epoch detection in combination of the single-frequency ambiguity fixed value and an updating value, and (7) baseline vector calculation and coordinate covariance matrix updating based on the fixed ambiguity, and back substitution to a carrier phase observation equation after the ambiguity is fixed to obtain a baseline vector. The method can automatically eliminate the influences of tropospheric errors and multipath errors in real time, and realize accurate fixation of Beidou single frequency ambiguity. While the real-time performance and the precision of monitoring are ensured, themonitoring cost is greatly reduced, and promotion and application of the Beidou positioning technology is facilitated.

The invention relates to an ocean spilt oil film thickness hyperspectral remote sensing estimation method based on a parameter lookup table and belongs to the field of ocean environment monitoring research. The method includes the steps of obtaining and pre-processing standard oil film thickness continuous change hyperspectral data by designing a simulation experiment; obtaining and pre-processing ocean spilt oil satellite remote sensing data; resampling a standard oil film spectrum based on a satellite sensor performance index; normalizing spectral reflectivity; building an oil film thickness optical calculating model; building an attenuation parameter lookup table; normalizing the reflectivity of satellite data and conducting mask treatment; inquiring and building an optimal wave band of the satellite data and relevant parameters; and calculating the oil film thickness in the satellite data through the parameter lookup table and the optical model. Compared with a traditional observation means, by means of the ocean spilt oil film thickness hyperspectral remote sensing estimation method, field workload is less, the thickness of the spilt oil film can be quantized, the thickness of an oil film in a spilt oil area can be calculated without entering an ocean spilt oil pollution area, and requirements of ocean split oil emergency monitoring and evaluation can be met.

An underground water supply network water leakage detecting method utilizes a multi-probe dependence tester, and probes of the tester are installed on a pipe network to collect the sound wave data. The method comprises the following steps: a. the probes are installed a pipe network valve, a hydrant or a water meter at internals, and the probes are closely contacted with the pipe network valve, the hydrant or the water meter; b. the sound wave data is collected; c. whether water leakage fault occurs is judged by analyzing the data. By utilizing function relevant principle, the method can calculate the position of water leakage point just by collecting the sound wave data at two points, thus having high locating efficiency; regional water leakage general investigation can be completed by testing for once, the data is easy to store, and the accident analysis can be conveniently carried out; as the data can be automatically collected, recorded and processed, the working intensity and anthropogenic influence can be greatly reduced.

The invention provides an overall measurement system calibration method based on vision calibration and coordinate transformation. The overall measurement system calibration method comprises the following steps: calibrating internal parameters and external parameters of a camera; performing hand-eye calibration on the relationship Hrc between a turntable coordinate system and a camera coordinate system; calibrating the transformation relationship Hpr between the turntable coordinate system and a place coordinate system or the transformation relationship Hrg between the turntable coordinate system and a ground coordinate system; on the basis of the acquisition of the Hrg, the Hpr and the Hrc, unifying the four coordinate systems of a camera, a turntable, a place and the ground; controlling the turntable to shoot a target, and mapping related information about the target to a specific coordinate system by combining the information about turntable azimuth, pitch angle and lens focal length, thus realizing a scheduled mask. An overall automatic tracking and measurement system can be calibrated by adopting the method; during the tracking and measuring process, the measurement precision of the system is ensured, and effective guarantee is provided for flight safety.

The invention discloses a system for monitoring the voltage of a fuel battery, comprising a switch network unit, a data acquisition unit, an isolated communication interface unit and a main controller. The fuel battery is divided into a plurality of fuel battery sets; one fuel battery set together with the switch network unit, the data acquisition unit, the control unit and the isolated communication interface unit forms a voltage monitor module. The single batteries of the fuel battery unit is connected to the switch network unit which gates the single batteries one by one and transmit the a voltage signal to the data acquisition unit; the output end of the data acquisition unit is connected to the control unit which provides a voltage signal to the main controller through the isolated communication interface unit; the main controller provides a control signal to the control unit through the isolated communication interface unit to uniquely gate the monitor module. The invention reduces the monitoring cost and ensures effective monitor of the voltage of the fuel battery.

The invention provides a micro intermediate infrared gas concentration monitoring method and a micro intermediate infrared gas concentration monitoring device. According to the device, a double-wavelength infrared monitoring theory is adopted, and a reasonable micro structure design is supplemented, so that a micro focal-point-free multi-reflection gas chamber is formed; a golden reflection film is plated on the inner wall of the gas chamber to enhance the reflection of infrared light, so that an infrared detector can acquire enough information for reflecting the concentration of detected gas in a tiny space. Filtration and waterproof prevention are executed through a structure consisting of a filter net and a waterproof ventilation film; the monitoring precision is guaranteed, and the gas chamber and an optical element can be protected. The device supplies a data output pin and an alarm output pin which are used for externally outputting a gas concentration digital signal and an open collector alarm signal; the device can meet the requirements for the gas concentration alarm of dangerous places. The device has digital signal processing and temperature compensation functions, has the advantages of high monitoring precision, stability, reliability and the like and can meet a requirement on the monitoring of the gas concentration in an intermediate infrared absorption region.

The invention relates to the technical field of machinery, and discloses a laser radar multipoint distance measurement system on the basis of diffraction optical components. The laser radar multipoint distance measurement system comprises a laser signal transmitting device, a laser signal receiving device and a signal processing system. The signal processing system is connected with the laser signal transmitting device and the laser signal receiving device, the laser signal transmitting device comprises a pulse laser device, and a collimation system, a beam expansion system, a diffraction grating and a half-transmitting and half-reflecting mirror are sequentially arranged in a light emitting direction of the pulse laser device; the light emitting direction of the pulse laser device is positioned in a transmitting direction of the half-transmitting and half-reflecting mirror, and the laser signal receiving device is arranged in a reflecting direction of the half-transmitting and half-reflecting mirror. The laser radar multipoint distance measurement system has the advantages that laser light transmitted by the pulse laser device can be divided into a plurality of light beams at equal angles or unequal angles by the diffraction grating, and the light beams can be transmitted via the half-transmitting and half-reflecting mirror, then face media at to-be-measured distances, can be reflected by the media at the to-be-measured distances and then can be reflected to the laser signal receiving device by the half-transmitting and half-reflecting mirror.

The present invention discloses a surface settlement observation method based on tilt imaging measurement of a drone, to adapt to requirements of surface subsidence monitoring. The method includes thefollowing steps: route planning, layout and measurement of image control points, obtaining of oblique images, establishment of a three-dimensional model of a real view of a measurement area, data collection and making a data difference for subsidence monitoring. In the present invention, an oblique photogrammetry technology is used to obtain images of a collapsed surface in various angles, a real-view three-dimensional model and an orthophoto image of the subsidence zone with spatial information are established by using aerial triangulation measurement and measurement of the image control points, the real-view three-dimensional model is used to collect data of ground points, and a difference is made for the data of the ground points at a same position at different times to obtain a subsidence value for subsidence monitoring. The method is easy to operate, and compared with the traditional subsidence monitoring method, the method has a wide monitoring range and high operation efficiency, and can obtain a more comprehensive monitoring result.

The invention discloses an optical module shell temperature monitoring method and device for improving the monitoring accuracy of the shell temperature of an optical module in each temperature range. The method comprises a step of obtaining a driving chip temperature sampling value when a condition that a first output value is in a low temperature threshold interval is determined according to a first output value of optical module shell temperature, a step of determining the second output value of the optical module shell temperature according to the linear relationship satisfied by the driving chip temperature sampling value and the optical module shell temperature, a step of obtaining a control chip temperature sampling value when a condition that the second output value is in a high temperature threshold interval is determined according to the second output value of the optical module shell temperature, and a step of determining the third output value of the optical module shell temperature according to the linear relationship satisfied by the control chip temperature sampling value and the optical module shell temperature. Different temperature sampling sources are selected to monitor the optical module shell temperature in different temperature ranges, and the monitoring accuracy of the optical module shell temperature in each temperature range is improved.

The invention discloses air quality monitoring sensor precision guarantee equipment. The equipment comprises a shell and a cylinder. One end of a rotation rod passes through an upper surface of the shell and is connected to a trigger rod in the shell. The other end of the rotation rod is connected to a wind measurement plate located above the shell. The trigger rod can rotate about a fixing nail. One end of the trigger rod is connected to an inner wall of the shell through a spring. Two sides of the other end of the trigger rod are provided with buttons of a control switch. A greenhouse gas monitoring sensor is installed on a fixing plate. A motor is connected to a storage battery through a lead and the control switch. A pulley is inlaid into a slideway so that the cylinder and the fixing plate are connected slidingly. The cylinder is connected to a rotation shaft of the motor through a stay wire. The design of the equipment is reasonable. When it is windy, sealing treatment is performed on the greenhouse gas monitoring sensor in the equipment. Monitoring precision is guaranteed and a technology effect that monitoring is accurate is achieved.

The invention relates to the field of machinery, and in particular relates to a washing line. The intelligent track type freely-combined washing line comprises a washing unit having at least two washing cabins, wherein a feed hole is formed in the right side of each washing cabin, a discharge hole is formed in the left side of each washing cabin, the discharge hole is wider than the feed hole, and the at least two washing cabins are mutually connected by inserting connection of the discharge holes and the feed holes; a motor is arranged on one side of the washing cabins, and a rotation shaft of the motor is connected with the washing cabins via a transmission mechanism. According to the intelligent track type freely-combined washing line provided by the invention, the discharge holes and the feed holes of the washing cabins are connected in an inserting manner, so that respective rotation of the washing cabins without mutual influence is ensured, the washing cabins can be responsible for different functions, such as soaking, prewashing, fine washing, rinsing and smoothening, the at least two washing cabins can be freely combined to form combinations with different functions, and achieve different washing purposes, and thus each washing cabin can execute any washing function in a standalone manner, and can also be combined with the adjacent washing cabin to complete a washing process. Therefore, flexible adjustment of the washing process is achieved.

The invention provides a galvanometer imaging laser telemeter and a gas concentration information imaging method, relates to the technical field of measurement by using optical means, and can be usedfor integrating live-action information and concentration information. The laser telemeter comprises a camera, a driving circuit, a laser, a collimating lens, a galvanometer, an optical receiving system, a signal processing circuit and a display system, the driving circuit controls the laser to emit laser, the laser penetrates through the collimating lens, is reflected by the galvanometer and penetrates through gas to reach the surface of an object, the optical receiving system receives the laser diffusely reflected by the surface of the object, the signal processing circuit converts the laserinto concentration information, and the display system displays the image information and the concentration information of the camera in an overlapped mode. The laser telemeter can draw an observed gas mass shape by utilizing concentration information in each pixel point, and in addition, the refresh speed of a gas concentration picture can be improved by utilizing a difference calculation method. The telemeter and the imaging method also have the advantages of high precision, vividness, intuitiveness, high refreshing speed and the like.

The invention relates to a shaft liquid level monitoring device. The shaft liquid level monitoring device comprises a microphone used for receiving reflected waves, and further comprises a shaft sleeve joint, an air inlet electromagnetic valve, a middle air chamber and a pressure relief electromagnetic valve which are connected in sequence, and the pressure relief electromagnetic valve is providedwith a pressure relief valve outlet used for being communicated with external atmosphere or a gas treatment device. The shaft liquid level monitoring device further comprises an air inlet side air pressure sensor, an air outlet side air pressure sensor and a controller, the air inlet side air pressure sensor and the air outlet side air pressure sensor are in signal connection with the controller,and the air inlet electromagnetic valve and the pressure relief electromagnetic valve are in control connection with the controller. Opening and closing of the air inlet electromagnetic valve and thepressure relief electromagnetic valve are separately controlled through the controller, then the pressure of the middle air chamber is controlled, the pressure difference between the air inlet side and the air outlet side of the air inlet electromagnetic valve can be accurately controlled to be a set pressure difference, the set pressure difference can correspond to sound wave signals with a highsignal-to-noise ratio, and the liquid level monitoring precision is guaranteed.

The invention discloses a water quality on-line monitor for river regulation. The water quality on-line monitor comprises a monitoring box used for installing all assemblies, a top cover is arranged at an opening in the top of the monitoring box, a controller is arranged on the lower surface of the top cover, the controller is connected with an electric power storage assembly, a sampler, a monitor and a driver through wires, a cleaning device is arranged in the monitoring box, a set of floating device is arranged on the bottom surface of the monitoring box, a set of dredging device is arranged on the outer wall of the monitoring box, and a set of driver is arranged at the tail of the monitoring box, water taking operation can be well carried out through the sampler, meanwhile, the whole device is well self-protected, the service life of the whole device is prolonged, and the sampling process is controlled. Accurate monitoring operation of water quality is facilitated. The monitoring precision of the sensor group is ensured through the monitor, the corrosion of the sensor group caused by the fact that a water sample is attached to the sensor group for a long time is prevented, and the service life of the equipment is prolonged.

The invention discloses a device and a method for monitoring property and biological activity of ground source heat pump surrounding soil. The device comprises cable conductors and an outer sleeve, wherein a soil water content monitoring module, a soil temperature monitoring module and a soil biological activity detection module are arranged in the outer sleeve; and the soil water content monitoring module, the soil temperature monitoring module and the soil biological activity detection module are connected with an outside control system through the cable conductors. According to the device disclosed by the invention, the soil water content is collected by the soil water content monitoring module, the soil temperature is collected by the soil temperature monitoring module, and the soil biological activity is collected by the soil biological activity detection module. The device disclosed by the invention is capable of respectively monitoring the temperature, soil water content and biological activity of the ground source heat pump surrounding soil in real time, evaluating the performance of the ground source heat pump surrounding soil according to the three indexes and further researching a solution for improving the operating performance of the ground source heat pump.

The invention discloses a lightning arrester online monitoring device and method. The device comprises a voltage-limiting sampling unit, an energy storage unit, a leakage current sampling, an over-voltage monitoring unit, a core processing module and a wireless transceiving module; the energy storage unit can collect and store the leakage current input by the voltage-limiting sampling unit when the lightning arrester is in normal work, thereby supplying power for the leakage current sampling unit, the over-voltage monitoring unit, the wireless transceiving module and the core processing modulewithout using the external power supply and laying a communication cable; the cost is saved under the condition of guaranteeing the monitoring accuracy and precision, and the power consumption is reduced; the communication function can be accomplished without being limited by the external condition; secondly, an aerial wakeup mode is improved by adding a query period field of a sender in a lead code and the inserted address information and channel information, and the power consumption of the lightning arrester monitoring device is further reduced.

The embodiment of the invention provides an optical power monitoring circuit and method. The optical power monitoring circuit comprises a driving device, a light emitting device and a processing device, wherein the driving device is used for driving the light-emitting device to emit light, the processing device is used for obtaining node current or node voltage, the node current represents the current of a node between the light-emitting device and the driving device, and the node voltage represents the voltage of the node between the light-emitting device and the driving device; and the processing device is used for determining the optical power of the light emitting device based on the node current or the node voltage. Thus, the optical power of the light-emitting device in the optical power monitoring circuit can be monitored without adding a photodiode and a bypass gold wire bonding wire thereof, and the design complexity and the manufacturing cost of the optical power monitoring circuit are effectively reduced.