The Design of an Intelligent Tracing Car Controller

2011 ◽  
Vol 411 ◽  
pp. 283-286
Author(s):  
Dang Juan Li
Keyword(s):  
Analog Circuits ◽  
Processing Unit ◽  
Test Results ◽  
Physical Test ◽  
Tracking Process ◽  
Driver Circuit ◽  
Transistor Circuit ◽  
Intelligent Tracking

We focus on the design of an intelligent tracing car controller based on analog circuits. In this work, detectors, processing unit and driver module are acted as the Infrared tube, LM393 and the switch of transistor circuit respectively. The voltage comparison and filtering are finished after analyzing and processing the track information acquired. And the signal controls the driver circuit action. Therefore the intelligent tracking process was realized. The physical test results show that the design is simple, stable working and good following mark ability.

scholarly journals Time interval measurement module implemented in SoC FPGA device

2016 ◽  
Vol 62 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Grzegorz Grzęda ◽  
Ryszard Szplet
Keyword(s):  
Mass Measurement ◽  
Measurement Data ◽  
Measurement Instrument ◽  
General Concept ◽  
Time Interval ◽  
Processing Unit ◽  
Test Results ◽  
Interval Measurement ◽  
Time Interval Measurement ◽  
On Chip

Abstract We presents the design and test results of a picosecond-precision time interval measurement module, integrated as a System-on-Chip in an FPGA device. Implementing a complete measurement instrument of a high precision in one chip with the processing unit gives an opportunity to cut down the size of the final product and to lower its cost. Such approach challenges the constructor with several design issues, like reduction of voltage noise, propagating through power lines common for the instrument and processing unit, or establishing buses efficient enough to transport mass measurement data. The general concept of the system, design hierarchy, detailed hardware and software solutions are presented in this article. Also, system test results are depicted with comparison to traditional ways of building a measurement instrument.

scholarly journals EFFICACY OF BASALT AND GRANITE AS COARSE AGGREGATE IN CONCRETE MIXTURE

2020 ◽  
Vol 7 (9) ◽  
pp. 1-9
Author(s):  
S.E Ubi ◽  
P.O Nkra ◽  
R.B Agbor ◽  
D.E Ewa ◽  
M. Nuchal
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Specific Gravity ◽  
Coarse Aggregate ◽  
Strength Properties ◽  
Test Results ◽  
Physical Test ◽  
Coarse Aggregates ◽  
Structural Tests ◽  
Comparative Results

This present research was on the comparison of the efficacious use of basalt and granite as coarse aggregates in concrete work. In order to obtain the basis for comparison, physical and structural tests were conducted on the different materials of the concrete and the concrete samples respectively. Physical test results revealed that basalt have a specific gravity of 2.8 and 2.5, while granite have a specific gravity of 2.9 and 2.6. In density, basalt have a density of 1554.55kg/m3 while granite had a density of 1463.64kg/m3. Aggregate impact test conducted on both aggregates revealed a percentage of 11.05% for basalt and 12.63% for granite. The following structural tests were carried out: compressive strength tests, flexural and tensile strength test and the comparative results are as follows. Compressive strength for basalt 36.39N/mm2 while 37.16N/mm2 for granite. 24.81N/mm2 tensile strength for basalt while 12.57N/mm2 for granite, 31.83N/mm2 flexural strength for basalt while 27.97N/mm2 for granite. From the above results, it can be deduced that basalt has higher strength properties than granite. Therefore, more suitable for coarse aggregate in achieving higher strength with some quantity of other composition of the concrete mix when compared to granite.

scholarly journals Highly Accurate Experimental Heave Decay Tests with a Floating Sphere: A Public Benchmark Dataset for Model Validation of Fluid–Structure Interaction

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 269
Author(s):  
Morten Bech Kramer ◽  
Jacob Andersen ◽  
Sarah Thomas ◽  
Flemming Buus Bendixen ◽  
Harry Bingham ◽  
...  
Keyword(s):  
Numerical Model ◽  
Model Validation ◽  
Potential Flow ◽  
Benchmark Dataset ◽  
Test Results ◽  
Drop Height ◽  
Nonlinear Case ◽  
Physical Test ◽  
Test Setup ◽  
Decay Tests

Highly accurate and precise heave decay tests on a sphere with a diameter of 300 mm were completed in a meticulously designed test setup in the wave basin in the Ocean and Coastal Engineering Laboratory at Aalborg University, Denmark. The tests were dedicated to providing a rigorous benchmark dataset for numerical model validation. The sphere was ballasted to half submergence, thereby floating with the waterline at the equator when at rest in calm water. Heave decay tests were conducted, wherein the sphere was held stationary and dropped from three drop heights: a small drop height, which can be considered a linear case, a moderately nonlinear case, and a highly nonlinear case with a drop height from a position where the whole sphere was initially above the water. The precision of the heave decay time series was calculated from random and systematic standard uncertainties. At a 95% confidence level, uncertainties were found to be very low—on average only about 0.3% of the respective drop heights. Physical parameters of the test setup and associated uncertainties were quantified. A test case was formulated that closely represents the physical tests, enabling the reader to do his/her own numerical tests. The paper includes a comparison of the physical test results to the results from several independent numerical models based on linear potential flow, fully nonlinear potential flow, and the Reynolds-averaged Navier–Stokes (RANS) equations. A high correlation between physical and numerical test results is shown. The physical test results are very suitable for numerical model validation and are public as a benchmark dataset.

scholarly journals Pembuatan Prototipe Kursi Roda Inovatif Dengan Akses Suara Menggunakan Smartphone Berbasis Mikrokontroler ATMega 8A

2021 ◽  
Vol 1 (1) ◽  
pp. 32-42
Author(s):  
Akbar Prasetio
Keyword(s):  
Power Consumption ◽  
Voltage Drop ◽  
Sensor Response ◽  
Load Test ◽  
Low Power Consumption ◽  
Maximum Speed ◽  
Test Results ◽  
Motor Speed ◽  
Maximum Weight ◽  
Driver Circuit

This low power consumption microcontroller is able to execute instructions with a maximum speed of 16MIPS at a frequency of 16MHz and the ATmega8 is tested to work at a voltage between 4.5 - 5.5 V. Test results of motor drivers 1 and 2 working at a voltage of 4.99 prove that the driver circuit has worked according to its function, namely controlling the motor in 2 directions according to the input given. Motor speed can be controlled by adjusting the motor voltage, the higher the voltage, the faster the motor rotates. The voltage drop will slow down the motor to the desired speed, The sensor response if it encounters an obstacle in front of the wheelchair will stop 10 cm before hitting the object. Then the load test is added gradually from 0 to 451 grams. The wheelchair will appear to be starting to slow down at its maximum weight, making it less responsive to commands. After testing, it can be concluded that the tool works as desired, namely controlling the motion of the wheelchair with voice commands and it can be declared successful although there are still some weaknesses and shortcomings that must be improved.

scholarly journals Investigation of the mechanical and physical properties of PLA produced by injection molding for matrix material of polymer composites

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Sedef Cakir 1 ◽  
Muhammed Aycicek 1 ◽  
Akin Akinci 1
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Low Cost ◽  
Matrix Material ◽  
Mechanical Tests ◽  
Polymer Materials ◽  
Light Weight ◽  
Test Results ◽  
Physical Test ◽  
Mechanical And Physical Properties

Polymer materials are increasingly being used due to their superior properties such as light weight, low cost and corrosion resistance. The difficult destruction of highly advantageous polymers in the environment leads to environmental problems and has some disadvantages as they are obtained from exhausted sources such as oil. These problems brought new quests and biopolymers derived from renewable sources came to the forefront. In this study, mechanical and physical test results applied to PLA, which is biopolymer and their use as matrix are investigated. Mechanical tests show that PLA, which has a tensile strength of 46.88 MPa, an impact strength of 9.27 kJ/m2 and a hardness of 79.6 Shore D, can be used as a substitute for polymers derived from petroleum-based sources.

EKSTRAK KULIT BUAH NAGA MERAH (Hylocereus Polyrhizus) SEBAGAI ANTIOKSIDAN DALAM FORMULASI SEDIAAN LOTIO

2018 ◽  
Vol 3 (2) ◽  
pp. 166
Author(s):  
Yuska Novi Yanty ◽  
Vetria Ade Siska
Keyword(s):  
Physical Properties ◽  
Vitamin B1 ◽  
Skin Extract ◽  
Test Results ◽  
Physical Test ◽  
Fruit Skin ◽  
Dragon Fruit ◽  
The Family ◽  
Irritation Test ◽  
Skin Quality

Dragon fruit is a kind of cactus tree from the family Cactaceae. Red dragon fruit contains lots of vitamin C, vitamin E, vitamin B1, B2, and B3. These vitamins can increase energy, and metabolize food, and even improve skin quality. This study aims to determine whether red dragon fruit skin extract can be made into lotion preparation and to know the effect of variation of red dragon fruit skin extract on physical properties of lotio. Red dragon fruit skin was extracted by maceration, lotio was made using formulation with variation of dragon fruit skin extract which were F1 (3%), F2 (5%), F3 (7%). The lotio was making by mixing the oil phase into the water. Physical test results showed there was organoleptic change in F1, F2 and F3 after observation for 4 weeks. The average result of pH test for four weeks was meet the lotio requirements ranging from 4.5-8. F1 with an average of 6.5, F2 with an average of 7.25, F3 with an average of 7.5. The result of viscosity test is F1 0,5 poise, F2, F3 and F4 0 poise. The result of F1 7.0 cm, F2 7,1 cm and F3 7.5 cm. The irritation test results are not irritating on the use of F1, F2 and F3. The test results showed that F0 and F1 are more favorable. The result of this research was that red skin dragon fruit extract can be made into lotio formulation and there was influence of variation of extract concentration on the physical properties of lotio.

Reinforced Plastics For Corrosion Control★

CORROSION ◽  
1958 ◽  
Vol 14 (10) ◽  
pp. 29-32 ◽  
Author(s):  
W. A. SEVERANCE
Keyword(s):  
Organic Acids ◽  
Chemical Resistance ◽  
Field Testing ◽  
Test Results ◽  
Special Study ◽  
Physical Test ◽  
Reinforced Plastics ◽  
Inorganic Acids ◽  
Reinforced Plastic ◽  
Extensive Field

Abstract Test results are shown which illustrate the versatility of reinforced plastics in solving corrosion problems. Special study has been made of resistance to solvents, organic acids, and concentrated inorganic acids, which may be termed “fringe” applications for plastics. The objective is to illustrate the differences between various polyesters and epoxies in specific chemicals. A series of tests in wet chlorine at 210 F shows wide variations in the resistance of different brands of polyesters. Indications are that the compounds showing best resistance should be worthy of extensive field testing. Physical test values are given for laminates used in chemical service. Laminates should be designed for maximum chemical resistance ; this does not always parallel maximum strength. Factors used in engineering reinforced plastic structures also are given. Numerous photos show the variety of equipment that can be fabricated of reinforced plastics. 6.6.8

SISTEM KONTROL OTOMATIS PENGISIAN CAIRAN DAN PENUTUP BOTOL MENGGUNAKAN ARDUINO UNO Rev 1.3

2019 ◽  
Vol 5 (1) ◽  
pp. 23-34
Author(s):  
Sonny Rumalutur ◽  
Serli Liling Allo
Keyword(s):  
Percentage Error ◽  
Test Results ◽  
Filling Process ◽  
The Road ◽  
Turn On ◽  
Driver Circuit ◽  
Active Motor ◽  
Arduino Uno ◽  
The Difference ◽  
Liquid Filler

The system design test results are obtained that when the sensor detects an object with a certain distance, the  sensor will issue a signal to the micro which is then forwarded to the charging driver circuit to turn on the relay. The relay functions as a switch or switch that will fill the liquid in the bottle, when the driver is charging on, the process of filling the liquid occurs in the bottle, and the micro filling process issues a signal in the active motor driver circuit. The conveyor driver is active after giving a signal from Arduino Uno, the conveyor will stop after the sensor detects a bottle then stops, and the micro sends a signal to turn the motor driver down on the bottle cap to close the bottle on. When the bottle closing process is complete the motor driver backs up actively moving the road conveyor back. The percentage error of theoretical value and measurement of the difference is small and when filling the liquid in a bottle takes 17 seconds until the bottle is fully filled and by using the micro, the liquid filler on the bottle and the bottle cover can be completed properly.

Methods of Averaging Physical Test Results. Use of Median

1948 ◽  
Vol 21 (1) ◽  
pp. 188-194 ◽  
Author(s):  
J. M. Buist ◽  
O. L. Davies
Keyword(s):  
Correct Choice ◽  
Test Results ◽  
Physical Test ◽  
Testing Laboratories ◽  
Comparison Of Results

Abstract Different testing laboratories use different methods of averaging test results, and it would facilitate comparison of results between different establishments if a uniform procedure could be agreed upon. To facilitate the correct choice the following methods have been compared: (1) Averaging all results within 10 per cent of the highest. (2) Averaging all results until the average is within 10 per cent of the highest. (3) Averaging the highest four results out of six, the highest three out of four. (4) Taking the median. (5) Method of Horrobin and Davies. Methods (1) and (2) are unacceptable on logical grounds, but there is little to choose between methods (3) and (4). The choice for routine use rests on simplicity of method and freedom from bias. Method (3) introduces a slight bias by always rejecting the low result and, therefore, it is recommended that the median be used either by averaging the middle two out of four results or by averaging the middle four out of six results. For five rings we take the average of the middle three and for four rings the average of the middle two. When we are interested in estimating the variations arising at each source in rubber testing, it is preferable to use the more elaborate method (5). This is considered the most logical of all methods, but it is not suitable for routine use.

scholarly journals A Study on Changes of Window Thermal Performance by Analysis of Physical Test Results in Korea

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3822 ◽  
Author(s):  
Seok-Hyun Kim ◽  
Hakgeun Jeong ◽  
Soo Cho
Keyword(s):  
South Korea ◽  
Thermal Performance ◽  
Test Results ◽  
Zero Energy ◽  
Physical Test ◽  
U Value ◽  
Grade 3 ◽  
The Impact ◽  
Window Design ◽  
Zero Energy Buildings

The interest in zero energy buildings is increasing in South Korea. Zero energy buildings need to save energy by using passive technology. The window performance is important to the thermal insulation of the building. Also, the government regulates the window performance through regulation and standards. However, it is difficult to predict window performance because the components of the window have become complicated due to the various materials used in the glass and frame. Based on window performance standards and regulations, the quality of window performance was managed. In this research, to consider thermal performance in proper window design in South Korea, we confirmed the impact on the thermal performance of the window through various kinds of materials and shapes. The authors also propose a window shape classification and frame calculation method based on actual test results. The authors analyzed the thermal performance data of the windows provided by the Korea Energy Agency and confirmed the change in the thermal performance of the windows by year and by frame material. The average U-value of the window decreased from 2012 to 2015 and maintained similar values until 2017. In 2018, this value was decreased to comply. Also, the authors confirmed the U-value of the windows through actual physical experiments and confirmed the change in thermal performance by the construction of the windows based on the results. The results show, in the case of aluminum windows, the U-value corresponding to Grade 3 (1.4–2.1 W/m2·K) was as high as about 60%. Regarding the analyzed results of the U-values of PVC windows, Grade 3 (U-value of 1.4–2.1 W/m2·K) accounted for about 35%, and Grade 2 (U-value of 1.0–1.4 W/m2·K) for about 29%. This paper also confirmed that the frame U-value of the PVC windows is lower than the frame U-value of the aluminum windows. Therefore, the authors proposed the performance index of the glazing part in PVC and aluminum window design. The results of this research can be used as basic data to identify problems in the method of determining the performance of windows in Korea.

Sign in / Sign up

Export Citation Format

Share Document