scholarly journals Aplikasi Weigh in Motion Menggunakan Metode Estimasi Untuk Mengukur Beban dan Kecepatan Kendaraan Bergerak

2019 ◽  
Vol 3 (1) ◽  
pp. 14 ◽  
Author(s):  
Iif Ahmad Syarif ◽  
Abdul Muis Prasetia
Keyword(s):  
Data Collection ◽  
Carrying Capacity ◽  
Maximum Load ◽  
Average Error ◽  
The Road ◽  
Weigh In Motion ◽  
Transportation Modes ◽  
Measurement Results ◽  
Traffic Volumes ◽  
Vehicle Loads

Humans as users of transportation modes, of course, want the ability of vehicles that are able to carry as much cargo as possible and on the fastest trip. This condition often results in the vehicle carrying the maximum load even exceeding the carrying capacity. On this basis and to maximize the results of data collection in the form of traffic volumes and vehicle loads, it is necessary to attempt to check the load of vehicles or trucks passing through the road without causing queues and congestion. To that can be done using a dynamic weighbridge which utilize methods of Weigh In Motion (WIM). The WIM system is equipped with the ability to measure vehicle loads when the truck runs at a certain speed through sensors placed below the road surface. The results showed that the WIM prototype can measure the speed and weight of the vehicle running successfully, the measurement results of running vehicle loads have an average error of 14.9%.

Seasonal Factors Using Vehicle Classification Data

1997 ◽  
Vol 1593 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Nikiforos Stamatiadis ◽  
David L. Allen
Keyword(s):  
Data Collection ◽  
Cost Allocation ◽  
The United States ◽  
Vehicle Classification ◽  
Seasonal Adjustment ◽  
Short Term ◽  
Weigh In Motion ◽  
Traffic Volumes ◽  
Adjustment Factors ◽  
Relationship Of

The increased use of equipment having automatic vehicle classification capabilities and weigh-in-motion devices produces a large amount of new data that can provide some insights into understanding traffic patterns more efficiently. These data can be used in determining seasonal adjustment factors for correcting traffic counts, in estimating truck traffic for highway cost allocation studies, and in predicting traffic volumes for roadways. However, due to practical limitations, it is not possible to obtain continuous data collection for all roads; thus, short-term counts are usually performed. Therefore, it is important to understand the relationship of the data obtained in a short-term period to those for the entire year. A study is currently under way that determines these relationships and develops seasonal adjustment factors for the state of Kentucky. The first step of the study was a survey of current uses of vehicle classification data and methods used for data collection throughout the United States. The results indicated that most states use no seasonal adjustment factors nor are they planning to develop any factors in the near future. At the same time, analysis of 2 years of vehicle classification data was used to develop seasonal and daily factors for Kentucky. Currently, the validation of these factors is under way. The preliminary analysis indicated that seasonal adjustment factors are essential in developing accurate estimates of traffic volumes for each vehicle type, and their use can improve the estimation of daily volumes.

scholarly journals Measurements of urban traffic parameters before and after road reconstruction

2021 ◽  
Vol 11 (1) ◽  
pp. 365-376
Author(s):  
Andrzej Bąkowski ◽  
Leszek Radziszewski
Keyword(s):  
Urban Traffic ◽  
Noise Model ◽  
Vehicle Traffic ◽  
The Road ◽  
Passenger Vehicles ◽  
Before And After ◽  
Traffic Volumes ◽  
National Road ◽  
The City ◽  
Good Agreement

Abstract The study analyzed the parameters of vehicle traffic and noise on the national road in the section in the city from 2011 to 2016. In 2013–2014 this road was reconstructed. It was found that in most cases, the distribution of the tested variable was not normal. The median and selected percentiles of vehicle traffic parameters and noise were examined. The variability and type A uncertainty of the results were described and evaluated. The results obtained for the data recorded on working and non-working days were compared. The vehicle cumulative speed distributions, for two-way four-lane road segments in both directions were analyzed. A mathematical model of normalized traffic flow has been proposed. Fit factor R2 of the proposed equations to the experimental data for passenger vehicles ranges from 0.93 to 0.99. It has been shown that two years after the road reconstruction, the median noise level did not increase even though traffic volumes and vehicle speeds increased. The Cnossos noise model was validated for data recorded over a period of 6 years. A very good agreement of the medians determined according to the Cnossos-EU model and the measured ones was obtained. It should be noted, however, that for the other analyzed percentiles, e.g. 95%, the discrepancies are larger.

Maximum load carrying capacity of mobile manipulators: optimal control approach

Robotica ◽  
2009 ◽  
Vol 27 (1) ◽  
pp. 147-159 ◽  
Author(s):  
M. H. Korayem ◽  
A. Nikoobin ◽  
V. Azimirad
Keyword(s):  
Optimal Control ◽  
Optimal Control Problem ◽  
Control Problem ◽  
Carrying Capacity ◽  
Nonholonomic Constraints ◽  
Maximum Load ◽  
Mobile Manipulators ◽  
Load Carrying Capacity ◽  
Maximum Payload ◽  
Load Carrying

SUMMARYIn this paper, finding the maximum load carrying capacity of mobile manipulators for a given two-end-point task is formulated as an optimal control problem. The solution methods of this problem are broadly classified as indirect and direct. This work is based on the indirect solution which solves the optimization problem explicitly. In fixed-base manipulators, the maximum allowable load is limited mainly by their joint actuator capacity constraints. But when the manipulators are mounted on the mobile bases, the redundancy resolution and nonholonomic constraints are added to the problem. The concept of holonomic and nonholonomic constraints is described, and the extended Jacobian matrix and additional kinematic constraints are used to solve the extra DOFs of the system. Using the Pontryagin's minimum principle, optimality conditions for carrying the maximum payload in point-to-point motion are obtained which leads to the bang-bang control. There are some difficulties in satisfying the obtained optimality conditions, so an approach is presented to improve the formulation which leads to the two-point boundary value problem (TPBVP) solvable with available commands in different softwares. Then, an algorithm is developed to find the maximum payload and corresponding optimal path on the basis of the solution of TPBVP. One advantage of the proposed method is obtaining the maximum payload trajectory for every considered objective function. It means that other objectives can be achieved in addition to maximize the payload. For the sake of comparison with previous results in the literature, simulation tests are performed for a two-link wheeled mobile manipulator. The reasonable agreement is observed between the results, and the superiority of the method is illustrated. Then, simulations are performed for a PUMA arm mounted on a linear tracked base and the results are discussed. Finally, the effect of final time on the maximum payload is investigated, and it is shown that the approach presented is also able to solve the time-optimal control problem successfully.

Measuring heavy traffic with WIM-ROAD and WIM-BRIDGE systems in an urban environment

2021 ◽  
Author(s):  
Maarten Soudijn ◽  
Sebastiaan van Rossum ◽  
Ane de Boer
Keyword(s):  
Heavy Traffic ◽  
Pressure Sensors ◽  
Strain Sensors ◽  
Traffic Load ◽  
Structural Safety ◽  
Special Focus ◽  
The Road ◽  
Weigh In Motion ◽  
Set Up ◽  
Calibration Program

<p>In this paper we present weight measurements of urban heavy traffic comparing two different Weigh In Motion (WIM) systems. One is a WIM-ROAD system using Lineas quartz pressure sensors in the road surface. The other is a WIM-BRIDGE system using optical fibre-based strain sensors which are applied under the bridge to the bottom fibre of a single span of the bridge deck. We have designed our tests to determine which system is most suited to Amsterdam. We put special focus on the accuracy that each system can achieve and have set up an extensive calibration program to determine this. Our ultimate goal is to draw up a realistic traffic load model for Amsterdam. This model would lead to a recommendation that can be used to re- examine the structural safety of existing historic bridges and quay walls, in addition to the current traffic load recommendations.</p>

scholarly journals Design of Monitoring Tool Heartbeat Rate and Human Body Temperature Based on WEB

2018 ◽  
Vol 164 ◽  
pp. 01017 ◽  
Author(s):  
Jalinas ◽  
Wahyu Kusuma Raharja ◽  
Bobby Putra Emas Wijaya
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Human Body ◽  
Average Error ◽  
Web Pages ◽  
Test Results ◽  
Pulse Sensor ◽  
Measurement Results ◽  
Human Body Temperature ◽  
Error Percentage

The heart is one of the most important organs in the human body. One way to know heart health is to measure the number of heart beats per minute and body temperature also shows health, many heart rate and body temperature devices but can only be accessed offline. This research aims to design a heart rate detector and human body temperature that the measurement results can be accessed via web pages anywhere and anytime. This device can be used by many users by entering different ID numbers. The design consists of input blocks: pulse sensor, DS18B20 sensor and 3x4 keypad button. Process blocks: Arduino Mega 2560 Microcontroller, Ethernet Shield, router and USB modem. And output block: 16x2 LCD and mobile phone or PC to access web page. Based on the test results, this tool successfully measures the heart rate with an average error percentage of 2.702 % when compared with the oxymeter tool. On the measurement of body temperature get the result of the average error percentage of 2.18 %.

Prediction of Design Hourly Volume on Rural Roads

2020 ◽  
pp. 036119812096556
Author(s):  
Miloš Petković ◽  
Vladan Tubić ◽  
Nemanja Stepanović
Keyword(s):  
Coefficient Of Determination ◽  
Rural Roads ◽  
The Road ◽  
Annual Average Daily Traffic ◽  
Proposed Model ◽  
Traffic Volumes ◽  
Implementation Costs ◽  
On The Road ◽  
Predicted Values ◽  
Design Hourly Volume

Design hourly volume (DHV) represents one of the most significant parameters in the procedures of developing and evaluating road designs. DHV values can be accurately and precisely calculated only on the road sections with the implemented automatic traffic counters (ATCs) which constantly monitor the traffic volume. Unfortunately, many road sections do not contain ATCs primarily because of the implementation costs. Consequently, for many years, the DHV values have been defined on the basis of occasional counting and the factors related to traffic flow variability over time. However, it has been determined that this approach has significant limitations and that the predicted values considerably deviate from the actual values. Therefore, the main objective of this paper is to develop a model which will enable DHV prediction on rural roads in cases of insufficient data. The suggested model is based on the correlation between DHVs and the parameters defining the characteristics of traffic flows, that is, the relationship between the traffic volumes on design working days and non-working days, and annual average daily traffic. The results of the conducted research indicate that the application of the proposed model enables the prediction of DHV values with a significant level of data accuracy and reliability. The coefficient of determination (R2) shows that more than 98% of the variance of the calculated DHVs was explained by the observed DHV values, while the mean error ranged from 4.86% to 7.84% depending on the number of hours for which DHV was predicted.

Development of Z-Factor for Circumferential Part-Through Surface Cracks in Dissimilar Metal Welds

2008 ◽  
Author(s):  
D.-J. Shim ◽  
G. M. Wilkowski ◽  
D. L. Rudland ◽  
F. W. Brust ◽  
Kazuo Ogawa
Keyword(s):  
Correction Factor ◽  
Carrying Capacity ◽  
Limit Load ◽  
Maximum Load ◽  
Load Carrying Capacity ◽  
Surface Cracks ◽  
Crack Driving Force ◽  
Dissimilar Metal ◽  
Load Carrying ◽  
J Estimation

Section XI of the ASME Code allows the users to conduct flaw evaluation analyses by using limit-load equations with a simple correction factor to account elastic-plastic fracture conditions. This correction factor is called a Z-factor, and is simply the ratio of the limit-load to elastic-plastic fracture mechanics (EPFM) maximum-load predictions for a flaw in a pipe. The past ASME Section XI Z-factors were based on a circumferential through-wall crack in a pipe rather than a surface crack. Past analyses and pipe tests with circumferential through-wall cracks in monolithic welds showed that the simplified EPFM analyses (called J-estimation schemes) could give good predictions by using the toughness, i.e., J-R curve, of the weld metal and the strength of the base metal. The determination of the Z-factor for a dissimilar metal weld (DMW) is more complicated because of the different strength base metals on either side of the weld. This strength difference can affect the maximum load-carrying capacity of the flawed pipe by more than the weld toughness. Recent work by the authors for circumferential through-wall cracks in DMWs has shown that an equivalent stress-strain curve is needed in order for the typical J-estimation schemes to correctly predict the load carrying capacity in a cracked DMW. In this paper, the Z-factors for circumferential surface cracks in DMW were determined. For this purpose, a material property correction factor was determined by comparing the crack driving force calculated from the J-estimation schemes to detailed finite element (FE) analyses. The effect of crack size and pipe geometry on the material correction factor was investigated. Using the determined crack-driving force and the appropriate toughness of the weld metal, the Z-factors were calculated for various crack sizes and pipe geometries. In these calculations, a ‘reference’ limit-load was determined by using the lower strength base metal flow stress. Furthermore, the effect of J-R curve on the Z-factor was investigated. Finally, the Z-factors developed in the present work were compared to those developed earlier for through-wall cracks in DMWs.

scholarly journals APLIKASI E-KMS UNTUK PENDATAAN DAN REKAPITULASI TUMBUH KEMBANG BALITA DI POSYANDU MEKAR ARUM 18

2020 ◽  
Vol 4 (2) ◽  
pp. 216
Author(s):  
Rohmat Tulloh ◽  
Dadan Nur Ramadan ◽  
Dendi Gusnadi
Keyword(s):  
Data Collection ◽  
Technology Implementation ◽  
Growth And Development ◽  
Participation Rate ◽  
High Satisfaction ◽  
Measurement Results ◽  
Service Activity ◽  
History Of ◽  
Indicators Of Success ◽  
The Village

E-KMS Application for Data Collection and Recapitulation of Toddler Growth in Posyandu Mekar Arum 18Abstract. Mekar Arum Posyandu 18, which located in Lengkong village, has a low to moderate participation rate of mothers and toddlers, ranging from 15% to 25%. Besides, the registration of growth and development of infants is done manually or handwritten by the cadre on a Kartu Menuju Sehat (KMS). KMS loss often occurs so that parents and Posyandu officials have difficulty finding a history of growth and development of infants. The purpose of this activity is to increase the number of toddlers who come to the Posyandu. Besides that, this activity intends to make it easier for parents of toddlers to get information about Posyandu activities schedules, data on children's growth and development, health information also Posyandu programs. While for Posyandu cadres, this activity can help to collect data and recapitulate the growth of children and also make it easier to reports to the village office or Puskesmas. This activity uses the technology implementation method through the creation of the Posyandu mobile application (mPosyandu). This application is an electronic KMS (e-KMS) based on Android. Electronic-based data collection methods are used as a basis for planning and implementing activities. From the measurement results, this community service activity can meet all the indicators of success. Those indicators are including, the number of mothers of toddlers who use the application reaches 90%, the number of toddlers who come to Posyandu has increased to 90%, all toddlers in Posyandu Mekar Arum 18 recorded digitally, the level of high satisfaction society and the level of suitability of activities that reach 100%.Keywords: Posyandu, e-KMS, toddler.Abstrak. Posyandu Mekar Arum 18 yang berlokasi di desa Lengkong memiliki tingkat partisipasi ibu dan balita yang terbilang rendah hingga sedang, berkisar antara 15 sampai dengan 25 persen. Selain itu pencatatan tumbuh kembang balita dilakukan secara manual atau ditulis tangan oleh kader pada selembar Kartu Menuju Sehat (KMS).  Kehilangan KMS sering terjadi sehingga para orang tua dan petugas posyandu kesulitan mencari riwayat tumbuh kembang balita. Tujuan dari kegiatan ini adalah untuk meningkatkan jumlah balita yang datang ke posyandu. Disamping itu kegiatan ini ditujukan untuk memudahkan orang tua balita untuk mendapatkan informasi tentang jadwal kegiatan posyandu, data tumbuh kembang anak dan informasi kesehatan serta program-program posyandu. Sedangkan bagi kader posyandu, kegiatan ini dapat membantu untuk pendataan dan rekapitulasi pertumbuhan balita dan juga dapat memudahkan dalam pelaporan ke kelurahan atau puskesmas. Kegiatan ini menggunakan metode penerapan teknologi melalui pembuatan aplikasi mobile Posyandu (mPosyandu). Aplikasi ini merupakan sebuah elektronik KMS (e-KMS) berbasis android. Metode pendataan berbasis elektronik digunakan sebagai landasan perencanaan dan pelaksanaan kegiatan. Dari hasil pengukuran, kegiatan pengabdian masyarakat ini mampu memenuhi semua indikator keberhasilan diantaranya, jumlah ibu balita yang memakai aplikasi mencapai 90%, jumlah balita yang datang ke posyandu meningkat hingga 90%, semua balita di posyandu mekar arum 18 sudah terdata secara digital, tingkat kepuasan masyarakat yang tinggi dan tingkat kesesuaian kegiatan yang mencapai 100%.Kata Kunci: Posyandu, e-KMS, Balita.

scholarly journals Efektifitas Pembayangan yang dihasilkan Pohon dan Bangunan di Koridor Jalan Perkotaan Untuk Mencapai Kenyamanan Termal

2018 ◽  
Vol 4 (1) ◽  
pp. 65-70
Author(s):  
Jockie Zudhy Fibrianto ◽  
Mochamad Hilmy
Keyword(s):  
Thermal Comfort ◽  
Temperature Difference ◽  
Weather Conditions ◽  
The Sun ◽  
The Road ◽  
Analysis Phase ◽  
Measurement Results ◽  
The Difference ◽  
Road Corridors ◽  
East West

The road corridor in Pontianak City has different shading output depending on the sun orientation. The difference has caused a temperature difference that affects the pedestrian thermal comfort along the corridor. Identification and measurement of shading temperatures that occur due to buildings and trees were carried out for three days in each afternoon with relatively similar weather conditions. The road corridor that becomes the research location was at A. Yani St.-Gajah Mada St.-Tanjung Pura St., which has a North-South orientation and Teuku Umar St.-Diponegoro St.-Sisingamangaraja St., who has an East-West direction. The analysis phase is done by comparing the effectiveness of imagery produced by buildings and trees. After that, the identification and measurement results are compared with Indonesian thermal comfort standards SNI T-14-1993-03 to obtain suitable thermal comfort in the road corridors in Pontianak City.

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