Analog instrument pointer monitoring and parameter estimation via line scan vision

Wang, Qing

doi:10.1016/j.egyr.2022.10.014

Cited by 8 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the tool moves on, the work-hardened zone at the tooltip is pushed forward by the blunt circle of the tooltip, affecting the hardened surface extruded by the flank. When the yield limit of the surface-layer material is reached, the surface layer will fracture to form cracks [32] and aggravate the workpiece surface roughness. Many bulges and plows will appear on the machined surface, which will enlarge the contact area with the corrosion solution and make the oxidation film unevenly distributed.…”

Section: Corrosion Morphologymentioning

confidence: 99%

Corrosion mechanism and machinability of 7075‐T6 aluminum alloy in high‐speed cutting: With and without cryogenic treatment

Ping

Wang

Lin

et al. 2023

Materials & Corrosion

View full text Add to dashboard Cite

This work aims to explore the effect of cutting parameters on the cutting force, surface quality, and corrosion resistance of 7075-T6 aluminum alloy after and without cryogenic treatment. Cryogenically treated (T6-C) and noncryogenically treated (T6) 7075-T6 aluminum alloy samples are experimentally cut and electrochemically corroded in a 3.5% NaCl solution. SEM, EDS, and electrochemical analysis are carried out to examine how cutting parameters affect the cutting force, surface quality, and corrosion resistance of cryogenically treated 7075-T6 aluminum alloy. The results show that after cryogenic treatment, under different cutting speeds, the cutting force is up to 39.8% smaller than without cryogenic treatment; under different cutting depths and feed rates, the cutting force is up to 136% and 21.54% smaller, respectively. Cryogenic treatment dramatically reduces the cutting force in the cutting process. As cutting speed increases, machined surface quality becomes better; fewer corrosion products and cracks are induced. When the cutting depth is 1.5 mm, there are fewer plows and micro-cracks on the machined surface than under other parameters, but cutting depth does not affect corrosion morphology significantly. The size of corrosion products is up to 55 μm smaller.The electrochemical analysis finds that at the cutting speed of 1500 m/min, after cryogenic treatment, the current density is 59.4% smaller than without cryogenic treatment; polarization resistance is 1.68 × 10 5 Ω•cm 2 larger. At the cutting depth of 1.5 mm, after cryogenic treatment, the current density is 66.16% smaller; self-corrosion potential shifts 0.19 V toward the positive pole. At the feed rate of 0.06 mm/z, after cryogenic treatment, self-corrosion potential shifts 0.18 V toward the positive pole; polarization resistance is 10.7% larger.

show abstract

Section: Corrosion Morphologymentioning

confidence: 99%

Corrosion mechanism and machinability of 7075‐T6 aluminum alloy in high‐speed cutting: With and without cryogenic treatment

Ping

Wang

Lin

et al. 2023

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…Current methods for obtaining meter readings include the distance method [22], the angle method [44], the template method [45] and the depth regression method [46] to determine meter readings. Wang [47] used different states of the pointer in a linear scanner to calculate the parameters of the pointer translation function and predict the pointer reading based on the response obtained at the center of mass of the pointer's point of light and a given input amplitude. Zhang et al [48] used a bi-directional heterogeneous network to extract instrument image features, constructed a soft depth regression network to predict the rotation angle of the instrument pointer, and finally calculated the reading of the instrument pointer based on the angle method.…”

Section: Related Workmentioning

confidence: 99%

Application of Swin-Unet for pointer detection and automatic calculation of readings in pointer-type meters

Zhang,

Ji,

Yang

et al. 2023

Meas. Sci. Technol.

View full text Add to dashboard Cite

Pointer-type meters are widely used in military, industrial, and aerospace applications. In this paper, we propose a method to automatically calculate the readings of pointer-type meters that exhibits strong robustness to various situations, such as complex backgrounds, tilted meters, blurred images, and meter images with uneven illumination. First, the mask maps of scale and pointers are obtained using the Swin-Unet semantic segmentation network. For the mask map of scale, the Swin Transformer image classification network is used to identify the values of the scale and the coordinates of the centroids of the scale, and for the mask map of the pointer, the least skeleton circle method is proposed to fit the linear equation of the pointer. Second, the influence of the pointer and several adjacent scale on the meter reading is considered, and the weighted angle method (WAM) is proposed to calculate the meter reading. In order to verify the robustness of the algorithm in this paper, the pointer detection method is compared with the traditional pointer detection method, and it is found that the pointer detection method in this paper works better, and the pointer detection algorithm in this paper is applied to different semantic segmentation results, and it is verified that the pointer detection algorithm in this paper can be well adapted to different semantic segmentation results. This paper also compares the proposed algorithm with the existing meter reading calculation methods. The experiments show that using WAM on uncorrected meter images reduces the error by 30% compared with the traditional angle method, and using WAM on corrected meter images reduces the error by about 50%, which finally verifies the effectiveness of the algorithm in this paper.

show abstract

Section: Introductionmentioning

confidence: 99%

“…[2] In electrochemical corrosion protection technology, cathodic protection using a sacrificial anode has the problem of metal consumption, [3] whereas cathodic protection using impressed current requires an external power supply, which requires further improvement. [4,5] In 2012, Wang Zhonglin first developed triboelectric nanogenerators (TENGs) by coupling the effects of triboelectrification and electrostatic induction. [6] TENGs have four basic working modes and can harvest different forms of energy, including human motion, [7] vibration, [8] tire rotation, [9] wind energy, [10,11] water energy, [12,13] etc.…”

mentioning

confidence: 99%

Enhancing the Performance of Triboelectric Nanogenerator Via Facile PDMS Surface Modification

Wang

et al. 2023

Adv Eng Mater

View full text Add to dashboard Cite

Corrosion, a damage phenomenon experienced by all materials in nature, causes huge losses, resource consumption, environmental pollution, industrial accidents, and endangered human health and safety. According to relevant statistics, the annual corrosion loss accounts for %3.34% of the gross domestic product (GDP), [1] and the global corrosion cost is more than four trillion dollars per year. [2] In electrochemical corrosion protection technology, cathodic protection using a sacrificial anode has the problem of metal consumption, [3] whereas cathodic protection using impressed current requires an external power supply, which requires further improvement. [4,5] In 2012, Wang Zhonglin first developed triboelectric nanogenerators (TENGs) by coupling the effects of triboelectrification and electrostatic induction. [6] TENGs have four basic working modes and can harvest different forms of energy, including human motion, [7] vibration, [8] tire rotation, [9] wind energy, [10,11] water energy, [12,13] etc. TENGs have the advantages of being light weight and low cost, with diverse structures and a wide choice of component materials, [14] along with high efficiency, even at low operating frequencies. [15] Many studies have combined TENG and impressed current cathodic protection to achieve energy harvesting and self-utilization. [16] Zhu used energy harvested from raindrops and wind for self-powered corrosion protection of metal surfaces. [17] Sun used liquid-solid TENG arrays for cathodic protection of carbon steel, [18,19] and Cui combined the self-powered cathodic protection of a sandwich-structured TENG with a green corrosion inhibitor. [20] A new type of synergistic

show abstract

Analog instrument pointer monitoring and parameter estimation via line scan vision

Cited by 8 publications

References 17 publications

Corrosion mechanism and machinability of 7075‐T6 aluminum alloy in high‐speed cutting: With and without cryogenic treatment

Corrosion mechanism and machinability of 7075‐T6 aluminum alloy in high‐speed cutting: With and without cryogenic treatment

Application of Swin-Unet for pointer detection and automatic calculation of readings in pointer-type meters

Enhancing the Performance of Triboelectric Nanogenerator Via Facile PDMS Surface Modification

Contact Info

Product

Resources

About