In gas gathering stations,pointer meters are usually read by workers,which takes high labor costs and has low *** solve these problems and build intelligent gas gathering stations,this paper proposes an automatic read...
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In gas gathering stations,pointer meters are usually read by workers,which takes high labor costs and has low *** solve these problems and build intelligent gas gathering stations,this paper proposes an automatic reading system for real-time and accurate pointer meter reading.A new dataset is first constructed,which consists of700 pointer meter images with different angles,illumination and *** on the dataset,the deep learning model YOLOv5 is trained for dial and pointer *** the pointer mask output by YOLOv5,image preproces sing is used to separate the pointer from the background and generate the pure *** improved skeleton extraction algorithm and the Hough line detection algorithm are combined to extract the pointer center *** the dial image output by YOLOv5,feature matching and perspective transformation are adopted for position ***,pointer reading is obtained by applying the angle method to the corrected dial and the pointer center *** experiments demonstrate the high accuracy and efficiency of the proposed *** strong robustness to various interference factors in complex environments are also validated.
To meet the demand of the laser application market for semiconductor laser function diversification, this paper proposes a handheld multi-wavelength laser stack packaging module. The 808 nm, 915 nm, and 980 nm semicon...
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With the increasing awareness of environmental protection,the solar photovoltaic(PV) industry has been developing dramatically in recent *** module is an important part of PV power generation *** all the defect types ...
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With the increasing awareness of environmental protection,the solar photovoltaic(PV) industry has been developing dramatically in recent *** module is an important part of PV power generation *** all the defect types of PV modules,hotspots occur more frequently and cause more serious ***,it is necessary to detect *** approach is proposed using saliency analysis method for hotspot detection,combing the cognitive property about visual saliency and the temperature property of *** only does this approach not require manual threshold setting,but also it does not require a large number of learning *** approach can also achieve the defect diagnosis and hotspot location when compared with the electrical characterization *** infrared thermal(IRT)images trained in experiments are obtained using the thermographic camera FLIR Vue Pro with the unmanned aerial vehicle from a PV plant in Jiangsu,*** 135 IRT images are collected and 1020 PV modules are extracted from these *** have proved great accuracy and robustness when using the proposed method to detect hotspots.
Multi-robot task allocation is one of the most interesting multi-robot systems that have gained considerable attention due to various real-world applications. In this paper, we focus on a multi-robot task allocation p...
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The successful operation of the Antarctic unattended energy platform with data storage and other functions can provide electric energy for other scientific research ***,its performance needs further improvement due to...
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The successful operation of the Antarctic unattended energy platform with data storage and other functions can provide electric energy for other scientific research ***,its performance needs further improvement due to the lack of experience and the special environmental constraints of *** on the above reasons,this paper proposes an optimized design of unattended energy control platform from the perspective of improving the reliability and safety of the *** to the actual project requirements,the engine controlsystem of the unattended energy platform is designed and *** controlsystem part is designed as a control mode with RS-485 control combined with hardware interface features to realize the direct communication between the upper computer and the generator set and the related hardware control *** redundant control is added to effectively avoid the loss of connection of key equipment of the whole device due to irreparable failure of PLC in the previous system,which improves the reliability of the platform system.
Although optical tweezers can manipulate tiny particles,the distortion caused by the scattering medium restricts their ***-shaping techniques such as the transmission matrix(TM)method are powerful tools to achieve lig...
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Although optical tweezers can manipulate tiny particles,the distortion caused by the scattering medium restricts their ***-shaping techniques such as the transmission matrix(TM)method are powerful tools to achieve light focusing behind the scattering *** this paper,we propose a method to focus light through a scattering medium in a large area based on the intensity transmission matrix(ITM).Only relying on the intensity distribution,we can calculate the ITM with the number of measurements equal to that of the control *** of the diffraction limit,our method guarantees high energy usage of the light *** on this method,we have implemented particle manipulation with a high degree of freedom on single and multiple *** addition,the manipulation range is enlarged more than 20 times(compared to the memory effect)to 200μm.
As a common method of traditional force control, impedance control has been widely used in robot machining field. However, impedance control with fixed parameters cannot dynamically adapt to the manufacturing environm...
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As a new type of neuromorphic sensor, the events-driven Dynamic Vision Sensor (DVS) has the advantages of low latency and wide dynamic range. The development of DVS overcomes the application limitations of traditional...
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In the actual production of slot die coating,the minimum coating thickness and the maximum substrate moving speed could only be judged by production experience,and there was no accurate prediction model due to the non...
In the actual production of slot die coating,the minimum coating thickness and the maximum substrate moving speed could only be judged by production experience,and there was no accurate prediction model due to the nonlinear characteristics of fluid ***,building a reasonable and efficient prediction model for slot die coating is now an urgent and challenging *** this paper,an optimized extreme learning machine(ELM) based on improved beetle antennae search(IBAS) algorithm is proposed for slot die coating *** optimized ELM model can well learn the nonlinear characteristics of the system and make accurate predictions,thus solving the traditional inaccurate empirical *** the prediction accuracy of ELM depends on the selection of weights and biases,the IBAS optimization algorithm is used to quickly search for the optimal value of weights and biases in the ELM *** algorithm improves the generation mechanism of antennae on the basis of the original algorithm,so that the algorithm can converge *** the same time,the search strategy of the algorithm is improved to avoid falling into the local optimal *** predicting the production data of slit coating,the feasibility and effectiveness of IBAS-ELM model are proved.
Incorporating physics in human motion capture to avoid artifacts like floating, foot sliding, and ground penetration is a promising direction. Existing solutions always adopt kinematic results as reference motions, an...
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