Abnormal Action Recognition with Lightweight Pose Estimation Network in Electric Power Training Scene

Electric power training is essential for ensuring the safety and reliability of the system.In this study,we introduce a novel Abnormal Action Recognition(AAR)system that utilizes a Lightweight Pose Estimation Network(LPEN)to efficiently and effectively detect abnormal fall-down and trespass incidents in electric power training scenarios.The LPEN network,comprising three stages—MobileNet,Initial Stage,and Refinement Stage—is employed to swiftly extract image features,detect human key points,and refine them for accurate analysis.Subsequently,a Pose-aware Action Analysis Module(PAAM)captures the positional coordinates of human skeletal points in each frame.Finally,an Abnormal Action Inference Module(AAIM)evaluates whether abnormal fall-down or unauthorized trespass behavior is occurring.For fall-down recognition,three criteria—falling speed,main angles of skeletal points,and the person’s bounding box—are considered.To identify unauthorized trespass,emphasis is placed on the position of the ankles.Extensive experiments validate the effectiveness and efficiency of the proposed system in ensuring the safety and reliability of electric power training.

Analysis of the Effect of Transcutaneous Electrical Stimulation of Acupoints Combined with Rehabilitation Training in The Treatment of Upper Limb Dysfunction After Stroke

Objective:To analyze the effect of combining transcutaneous electrical acupoint stimulation(TEAS)with rehabilitation training in patients with upper limb dysfunction after stroke(ULDAS).Methods:A total of 130 ULDAS patients who were hospitalized and rehabilitated in Wuxi Xinwu District Rehabilitation Hospital from May 2021 to May 2023 were selected and randomly divided into Group A(65 cases,rehabilitation training)and Group B(65 cases,rehabilitation training+TEAS).The effects of the two groups were compared.Results:After treatment,the upper limb functional indexes of Group B were better than those of Group A(P<0.05).The rate of muscle tone grades 0-4 in Group B was higher than those of Group A(P<0.05).Conclusion:The function of upper limbs and muscle strength of ULDAS patients improved by combining TEAS with rehabilitation training.

Longitudinal train dynamics of electric multiple units under rescue

Once operating trains are disabled on the railway lines,an efficient manner is to utilize the train for train rescue.Owning to the different train and coupler types,it is difficult to formulate uniform regulations for train to train rescue.In this paper,the longitudinal train dynamics of electric multiple units under rescue were analyzed by field and laboratory tests.The angling behavior of the brakinginduced coupler under compressed in-train forces was analyzed.A dynamic model for the train and draft gear system was developed considering accurate boundary limitations and braking characteristics.The safety indices and their limits for the coupled rescue train were defined.Thedynamic evaluations of different train to train rescue scenarios were analyzed.It is indicated that the coupler vertical rotation occurs during the emergency braking applied by the assisting train.The vertical force components of intrain forces lead to the carbody pitch behavior and even cause local destructions to the coupler system.The carbody pitch motion can arise the inference of in-train devices.Based on the safety evaluation of train and coupler system,the regulations for typical train to train rescue scenarios were formulated.

Speed profile optimization of catenary-free electric trains with lithium-ion batteries

Catenary-free operated electric trains, as one of the recent technologies in railway transportation, has opened a new field of research: speed profile optimization and energy optimal operation of catenary-free operated electric trains. A well-formulated solution for this problem should consider the characteristics of the energy storage device using validated models and methods. This paper discusses the consideration of the lithium-ion battery behavior in the problem of speed profile optimization of catenary-free operated electric trains. We combine the single mass point train model with an electrical battery model and apply a dynamic programming approach to minimize the charge taken from the battery during the catenary-free operation. The models and the method are validated and evaluated against experimental data gathered from the test runs of an actual battery-driven train tested in Essex, UK. The results show a significant potential in energy saving. Moreover, we show that the optimum speed profiles generated using our approach consume less charge from the battery compared to the previous approaches.

A Full Mission Simulator of the Ship＇s Automated Electric Power System for Training and Competence Testing of Marine Engineers

This article describes practical preparation of marine engineers on the full mission simulator complex of the ship＇s automated electrical power plant. A full mission simulator complex of the ship＇s automated power management system meets International Convention STCW （Standards of Training, Certification and Watchkeeping） 78 （with Manila amendments 2010） requirements in part of adequate reproduction of its operational modes corresponding to the actual configuration and layout of the ship＇s automated power management system with real consumers and typical loads. The simulator is fully consistent with the goals and objectives of the practical training, as well as the goals and objectives of proficiency testing engine department officers on issues of technical maintenance of real ship＇s equipment （high voltage installations included） and means of automation. The simulator＇s complex is designed for training and proficiency testing of cadets and students of maritime educational institutions, as well as training and proficiency testing of marine specialists （mechanics and electricians） by watch-keeping and maintenance of modem integrated automated control systems of ship＇s electric power plant and the individual ship electromechanical systems, including high-voltage systems. A simulator＇s complex provides adequate reproduction of operational situations on technical side of real ship electric and automation equipment provides training on monitoring, control and management diesel-generator sets in hand, semi-automatic and automatic modes of power station, control and management of electromechanical systems, as well as the set of tasks upon parameterization, visualization and etc. Besides number of combinations of monitoring, control and management tasks, the simulator＇s complex provides an opportunity to simulate various practical fault conditions. It allows students to focus on the work of automatic control system in emergency situations and to work out correct actions for a watch-keeper on searching, localizing of faults and troubleshooting of equipment.

Using Augmented Reality Techniques to Simulate Training and Assistance in Electric Power

In combination with the augmented reality (AR) technology and Hololens device, an electric power work assist system is developed to provide a more realistic and convenient training experience for electric power training. The training effect was improved, and help guidance information was provided in the actual operation of electric power work. Experimental results show that difficulty of electric power work is reduced and the efficiency of actual work is improved.

Multiple Purpose Simulation for Electric Vehicles

Aim Toshorten integral design period of electric vehicles Methods The electric vehicle simulation program(EVSP), a modular user-friendly program which is written in Borland C++ OWL for Windows was developed. Results EVSP allows simulating the dynamic and the economy performance of electric vehicles.EVSP provides many kinds of data input module,a large components library of electric vehicles and several kinds of speed cycle with these library,it is easily to develop a new concept of different drive trains or even to compare or improve the existing electric vehicles. The paper simulated the performance of YW6120DD Electric Bus, and analyzed the test results comparing with simulation results Conclusion The simulation results indicate that the EVSP may contribute to the developments of electric vehicles in general and the definition of the optimal match management in the drive train in particular.

Evolution of the electrical contact of dynamic pantograph–catenary system

A good contact between the pantograph and catenary is critically important for the working reliability of electric trains, while the basic understanding on the electrical contact evolution during the pantograph--catenary system working is still ambiguous so far. In this paper, the evolution of electric contact was studied in respects of the contact resistance, temperature rise, and microstructure variation, based on a home-made pantograph-catenary simulation system. Pure carbon strips and copper alloy contact wires were used, and the experimental electrical current, sliding speed, and normal force were set as 80 A, 30 km/h, and 80 N, respectively. The contact resistance presented a fluctuation without obvious regularity, concentrating in the region of 25 and 50 mf~. Temperature rise of the contact point experienced a fast increase at the first several minutes and finally reached a steady state. The surface damage of carbon trips in microstructure analysis revealed a complicated interaction of the sliding friction, joule heating, and arc erosion.

基于SolidWorks Electrical的机电一体化教学研究

现阶段高校在进行机电一体化课程建设时,往往理论知识较多,而实践机会较少,因此在学习机电一体化课程时,往往出现学生难以理解,导致学生的设计作品往往都因为经验不足而不理想,通过引入solid electrical系列软件,在虚拟三维空间中对机电一体化设备进行设计并加以改进,可以大大的缩短设计周期以及降低设计成本,而且还能够有效的提高产品设计的成功率。

Neuromuscular electrical stimulation and testosterone did not influence heterotopic ossification size after spinal cord injury: A case series

Neuromuscular electrical stimulation(NMES) and testosterone replacement therapy(TRT) are effective rehabilitation strategies to attenuate muscle atrophy and evoke hypertrophy in persons with spinal cord injury(SCI). However both interventions might increase heterotopic ossification(HO) size in SCI patients. We present the results of two men with chronic traumatic motor complete SCI who also had pre-existing HO and participated in a study investigating the effects of TRT or TRT plus NMES resistance training(RT) on body composition. The 49-year-old male, Subject A, has unilateral HO in his right thigh. The 31-year-old male, Subject B, has bilateral HO in both thighs. Both participants wore transdermal testosterone patches(4-6 mg/d) daily for 16 wk. Subject A also underwent progressive NMES-RT twice weekly for 16 wk. Magnetic resonance imaging scans were acquired prior to and post intervention. Cross-sectional areas(CSA) of thewhole thigh and knee extensor skeletal muscles, femoral bone, and HO were measured. In Subject A(NMES-RT + TRT), the whole thigh skeletal muscle CSA increased by 10%, the knee extensor CSA increased by 17%, and the HO + femoral bone CSA did not change. In Subject B(TRT), the whole thigh skeletal muscle CSA increased by 13% in the right thigh and 6% in the left thigh. The knee extensor CSA increased by 7% in the right thigh and did not change in the left thigh. The femoral bone and HO CSAs in both thighs did not change. Both the TRT and NMES-RT + TRT protocols evoked muscle hypertrophy without stimulating the growth of preexisting HO.

Evaluating Training Programs for Electroacupuncture Techniques with Skin Temperature as a New Index

Training in acupuncture techniques has a long history of thousands of years. It has been individually handed down from person (teacher) to person (student). However, techniques and training have not been scientifically evaluated because individual differences may exist among evaluators. In animal studies, some researchers have reported that acupuncture stimulation dilates blood vessels of the skin and skeletal muscles. These studies also reveal an association between skin temperature (ST) and blood circulation volume on the skin. Our previous studies have reported that acupuncture stimulation, especially that of electroacupuncture (EA), can elevate ST. Therefore, we monitored the instructive effects and level of EA techniques with ST and propose that we can bring monitoring ST into training/education of EA as a new index of technical assessment. Moreover, ratio of changes might be used as new criteria for retraining. Healthy students (n = 14) were given with 10 minutes of EA stimulation on the tibialis anterior: Zusanli (ST36) and Tiaokou (ST38). Their ST was monitored before and during stimulation as well as for 30 minutes after stimulation. All subjects showed a nominal increase in ST. At the time, ratios of changes were also calculated. Two subjects did not reach the average of 1.3%. This suggests that the technical level of the therapist was inadequate. Thus, observation of ST elevation and calculation of the average ratio of ST change (elevation) could be applied to a new scientific index of technical assessment in acupuncture treatment training. However, further research (e.g., larger-scale studies, adjustment for gender differences, or other age subjects) is required to support these findings.

神经肌肉电刺激联合口腔感觉训练对重症病毒性脑炎合并吞咽障碍患儿的康复效果

目的探讨神经肌肉电刺激(NMES)联合口腔感觉训练对重症病毒性脑炎(SVE)合并吞咽障碍患儿的康复效果、吞咽功能、神经功能、营养状况的影响。方法选择河北省儿童医院2021-01—2023-03收治的SVE合并吞咽障碍患儿108例。随机数字表法分为口腔感觉训练组和NMES联合组各54例。2组患者均进行抗病毒、降颅内压、去高热、控制惊厥、保护脑神经等对症支持治疗。口腔感觉训练组给予口腔感觉运动训练,NMES联合组在口腔感觉训练基础上进行NMES康复治疗。比较2组患者康复效果、吞咽功能[吞咽障碍调查量表(DDS)]、神经功能指标[血清脑源性的神经营养因子(BDNF)、神经元特异性的烯醇化酶(NSE)水平]、营养状况[主观的综合性营养评分量表(SGA)]、生活质量[吞咽障碍特异性生存质量量表(SWAL-QOL)]。结果康复治疗4周后,NMES联合组康复总有效率为92.59%,高于口腔感觉训练组的72.22%(P<0.05);NMES联合组口腔期、咽期、食管期DDS评分、SGA评分、SWAL-QOL评分、血清BDNF水平明显高于口腔感觉训练组,血清NSE水平低于口腔感觉训练组(P<0.05)。结论NMES联合口腔感觉训练用于SVE合并吞咽障碍患儿的康复治疗,可有效提升康复效果,进一步改善吞咽功能和神经功能,改善患儿的营养不良状况,提升患儿生活质量。

智能制造背景下高职电气自动化专业人才培养模式的创新研究

高职电气自动化技术专业在智能制造新形势下,人才培养方案需要创新变革。文章针对目前电气自动化技术高技能人才培养目标与企业实际需求的差异、人才培养质量偏低、校企融合深度不足等现状,探讨了电气自动化课程体系的构建;基于工作过程项目实施模式的创新、专综课程结合的培养体系,提出了以培养学生能力素养为主线、以学生发展为中心,通过产教融合、科教融合创新机制,构建了依托“五新育人”“岗课证赛”实践教学进行能力培养的人才培养新模式,以期为其他专业的人才培养方案提供改进思路。

“新工科+工程教育专业认证”背景下基于产教融合的机电类专业人才培养模式研究

针对新工科建设和工程教育专业认证对机电类专业建设和人才培养提出的新要求,结合机电类专业特色及目前存在的人才培养特点不鲜明、无法满足现代工程技术型人才培养要求等问题,在分析工程教育专业认证与新工科建设辩证关系的基础上,从调整专业结构、转变教育理念、搭建实践教学平台、构建“双师型”教师队伍、构建全方位多视角的人才质量评价体系等方面提出了改革建议,以期在机电类专业实现新工科建设与工程教育专业认证的有机统一。

核心肌群训练联合经皮神经电刺激治疗产后非特异性下背痛的疗效观察

目的:探讨核心肌群训练联合经皮神经电刺激(TENS)治疗产后非特异性下背痛(NLBP)的有效性。方法:选取2021年10月至2022年9月在首都医科大学附属北京妇产医院女性盆底功能障碍诊治中心就诊的产后NLBP患者共50例。采用随机数字表法分为观察组和对照组,各25例。对照组给予针对下背部肌筋膜触发点的TENS治疗,观察组在此基础上联合核心肌群训练。在治疗前、治疗后和随访4周后,分别采用视觉模拟评分法(VAS)、Oswestry功能障碍指数(ODI)以及爱丁堡产后抑郁量表(EPDS)进行疗效评价。结果:治疗后2组VAS评分、ODI指数均明显低于治疗前(P<0.05),且观察组明显低于对照组(P<0.05)。随访4周,对照组VAS评分、ODI指数明显高于治疗后(P<0.05),观察组VAS评分、ODI指数与治疗后比较无统计学差异。对照组治疗后EPDS评分与治疗前无统计学差异,而观察组治疗后及随访4周EPDS评分均显著低于治疗前(P<0.05)。结论:核心肌群训练联合TNES可有效改善产后NLBP患者的疼痛、功能障碍以及抑郁情绪状态,减少NLBP的复发。

术前量化排尿训练联合术后盆底肌电刺激在前列腺癌根治术患者中的应用

目的 探讨术前量化排尿训练联合术后盆底肌电刺激对前列腺癌根治术患者的影响。方法 前瞻性纳入南京市第一医院2019年9月至2022年9月拟行前列腺癌根治术治疗的100例患者,以随机数字表法将其分为对照组与观察组,各50例。对照组接受术前常规护理与术后盆底肌电刺激,观察组在此基础上给予术前量化排尿训练。比较两组干预前后尿流动力学及排尿情况,并观察尿管拔除后24 h内及术后3个月排尿障碍发生情况。结果 干预后,两组膀胱容量、膀胱逼尿肌压力、尿流率、排尿间隔时间、每次尿量均高于干预前,且观察组高于对照组,差异有统计学意义(P<0.05);干预后,两组夜尿次数均少于干预前,且观察组少于对照组,差异有统计学意义(P<0.05);观察组尿管拔除后24 h内、术后3个月排尿障碍发生率均低于对照组,差异有统计学意义(P<0.05)。结论 应用术前量化排尿训练联合术后盆底肌电刺激可改善前列腺癌根治术后患者膀胱功能,提高排尿及控尿能力,降低排尿障碍发生率。

神经肌肉电刺激系统联合康复训练在脑卒中后肢体功能障碍患者康复中的应用价值

目的:探究神经肌肉电刺激系统联合康复训练在脑卒中后肢体功能障碍患者康复中的应用价值。方法:选取2022年1—12月第九〇九医院收治的95例脑卒中后肢体功能障碍患者作为研究对象。按照随机数字表法分为对照组(n=47)和观察组(n=48)。观察组行康复训练联合神经肌肉电刺激系统干预,对照组仅接受康复训练干预,两组均持续干预3个月。比较两组干预前后改良Ashworth量表(MAS)评分、患肢各关节主动活动度、脑卒中康复运动功能评定量表(STREAM)评分。结果:干预前,两组MAS评分、患肢各关节主动活动度、STREAM评分比较,差异均无统计学意义(P>0.05);干预后,两组患侧上肢肌肉痉挛、下肢肌肉痉挛评分均低于干预前,且观察组均低于对照组,差异均有统计学意义(P<0.05);干预后,两组肩关节外展、肘关节屈曲、腕关节掌屈、手掌指关节屈曲、髋关节内外旋、膝关节屈伸主动活动度均高于干预前,且观察组均高于对照组,差异均有统计学意义(P<0.05)。干预后,两组上肢运动、下肢运动、基本活动评分及总分均高于干预前,且观察组均高于对照组,差异均有统计学意义(P<0.05)。结论:在脑卒中后肢体功能障碍患者康复中应用神经肌肉电刺激系统联合康复训练可以有效缓解其肌肉痉挛情况,改善关节活动度,提高肢体运动功能。

腹壁强化训练联合神经肌肉电刺激治疗产后腹直肌分离的临床研究

目的研究腹壁强化训练联合神经肌肉电刺激治疗产后腹直肌分离的临床效果。方法选取2021年1月至2022年12月江苏省江阴市中医院收治的108例产后腹直肌分离患者,按照随机数字表法将其分为三组,每组36例。腹壁强化组采用腹壁强化训练治疗,电刺激组采用神经肌肉电刺激治疗,联合组采用腹壁强化训练联合神经肌肉电刺激治疗,治疗3个疗程。比较两组临床疗效;比较两组治疗前后腹直肌超声指标、腹部核心肌群肌力、生活质量评分。结果联合组临床疗效优于腹壁强化组、电刺激组(P<0.05)。治疗后,三组腹直肌间距小于治疗前,腹直肌厚度、弹性模量值、剪切波速度高于治疗前;且联合组腹直肌间距小于腹壁强化组、电刺激组,腹直肌厚度、弹性模量值、剪切波速度高于腹壁强化组、电刺激组(P<0.05)。治疗后,三组腹直肌、腹横肌、腹斜肌肌力高于治疗前,且联合组高于腹壁强化组、电刺激组(P<0.05)。治疗后,三组躯体功能、社会功能、心理功能和物质生活状态评分高于治疗前,且联合组高于腹壁强化组、电刺激组(P<0.05)。结论腹壁强化训练联合神经肌肉电刺激治疗产后腹直肌分离的效果显著,可增强患者腹部核心肌群肌力,提高生活质量。

神经肌肉电刺激辅助康复治疗对脑卒中后认知功能障碍及日常生活能力的影响

目的探讨康复训练配合神经肌肉电刺激对脑卒中后认知功能障碍及生活能力的影响,为脑卒中后综合康复治疗提供依据。方法选择我院2021-2023年收治的100例脑卒中患者,随机分为对照组和观察组,每组50例。对照组给予常规康复训练治疗;观察组在此基础上增加神经肌肉电刺激治疗。比较两组临床疗效、血清皮质醇(Cor)、神经肽Y(NPY)水平、生活质量评分(SS-QOL量表)及神经功能评分(NIHSS量表)。结果与对照组相比,观察组总有效率更高(P<0.05);Cor、NPY水平均较对照组降低更多(P<0.05);SS-QOL评分提高更显著(P<0.05);NIHSS评分下降更明显(P<0.05)。结论康复训练配合神经肌肉电刺激可明显改善脑卒中后认知功能损害,减轻应激状态,提高日常生活能力和生活质量。该组合治疗策略优于单纯康复训练。

隔姜温和灸联合盆底肌训练及生物反馈电刺激治疗产后压力性尿失禁33例

目的观察隔姜温和灸联合盆底肌训练及生物反馈电刺激治疗产后压力性尿失禁(PSUI)的疗效。方法选取2021年6月—2022年6月于福建中医药大学附属人民医院整合盆底医学中心就诊的PSUI患者66例,采用SPSS 26.0软件生成随机序列和信封法分为对照组和观察组,每组33例。对照组进行盆底肌训练、生物反馈电刺激和健康教育,观察组在对照组治疗基础上联合八髎穴隔姜温和灸,每次30 min,隔日1次,2组均连续干预10次。比较2组治疗前后1 h漏尿量、尿道内口漏斗形成率和泌尿生殖障碍量表简表(UDI-6)评分,比较2组治疗前后和治疗后1个月尿失禁生活质量问卷(I-QOL)评分。结果与治疗前比较,2组治疗后1 h漏尿量、UDI-6评分均明显降低(P<0.05),治疗后和治疗后1个月I-QOL评分明显升高(P<0.05);观察组治疗后尿道内口漏斗形成率明显降低(P<0.05)。与对照组比较,观察组治疗后1 h漏尿量和UDI-6评分均明显降低(P<0.05),治疗后和治疗后1个月I-QOL评分明显升高(P<0.05)。结论隔姜温和灸能有效改善PSUI患者漏尿量,减轻尿失禁症状,提高生活质量,促进产后盆底功能康复。