FACTOID # 89: In the 1990's, nearly half of all arms exported to developing countries came from the United States of America.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Data acquisition system

Data logging, carried out by a data acquisition system (DAS), is used to measure parameters such as temperature and humidity in storage facilities with perishable products; the measurement data is then stored for analysis to improve quality assurance. Data logging is the practice of recording sequential data, often chronologically. ... Fig. ... Humidity is the concentration of water vapor in the air. ...

Data Logging Systems

Data logging systems consist of four elements:

  1. Measuring output (sensors around the vehicle)
  2. Recording output signals (logger unit)
  3. Uploading/accessing recorded data (telemetry)
  4. Analysis of recorded data. (DAS software)

The 4 elements above have specific requirements which need to physically present and included in the design process. Sensors to measure selected parameters must meet certain specifications, and the routing of the sensor cables ensures they will not suffer from electromagnetic interference from other electronic systems. The DAS unit (including memory) and the link from the DAS unit to the operating platform to upload the acquired data via a hardwire cable or telemetry also must conform to requirements. To meet Wikipedias quality standards, this article or section may require cleanup. ... Telemetry is a technology that allows the remote measurement and reporting of information of interest to the system designer or operator. ... Computer software (or simply software) refers to one or more computer programs and data held in the storage of a computer for some purpose. ... A cable is two or more wires or optical fibers bound together, typically in a common protective jacket or sheath. ... Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, composed of the electric field and the magnetic field. ... In psychology, memory is the ability of an organism to store, retain, and subsequently recall information. ... Hardwire may be a reference to: Hardwired, the default definition; Hardwire (comics) Hardwire, musician of electronic music Hard Wired, an album from Front Line Assembly Category: ...


Most race cars use two types of telemetry. The first is sent to the engineers in the pits every time the vehicle acquires more than 50Mb of data, containing an insight into the state of the vehicle. The second is transferred each time the vehicle is in the pit lane, providing information on every part of the vehicle. With the most advanced telemetry, the data is sent constantly for analysis through a transmitter as long as a good connection is present (not always possible in parts of certain raceways due to obstruction). Auto racing (also known as automobile racing or autosport) is a sport involving racing automobiles. ... Look up engineer in Wiktionary, the free dictionary. ... A megabyte is a unit of information or computer storage equal to approximately one million bytes. ... Antenna tower of Crystal Palace transmitter, London A transmitter (sometimes abbreviated XMTR) is an electronic device which with the aid of an antenna propagates an electromagnetic signal such as radio, television, or other telecommunications. ...


The operating platform is required to include specialist analysis software to view the data, usually in the form of various graphs to improve and develop the performance of the key areas and operation parameters of the vehicles running conditions. The most advanced software in Formula 1 has been developed by McLaren Electronics known as Advanced Telemetry Linked Acquisition System, which displays graphs of each of the vehicle's systems on the exact section of track, in a real time format. The benefits of using such a system include the fact that the parameters which can be recorded for analysis cover the whole set-up of the race vehicle (up to 127 channels). Formula One, abbreviated to F1 and also known as Grand Prix racing, is the highest class of single-seat open-wheel auto racing. ... It has been suggested that Real-time computing be merged into this article or section. ... Look up Channel on Wiktionary, the free dictionary In general, channel refers to the path between two endpoints. ...


The parameters which are measured and recorded by a data acquisition system are broken into three generic categories, which are also interlinked due to system requirements and the complexity of major components (for example, a wheel speed sensor not only monitors the wheel speed but also the speed of the vehicle, location on the track and an input to traction and launch control systems): Speed is the rate of motion, or equivalently the rate of change of position, many times expressed as distance d moved per unit of time t. ... Traction is applied mechanical force used to achieve motion. ... Launch control refers to an electronic device that is used to assist a Formula 1 driver in the very moment of the start of a race. ...

  1. Engine: Revs per minute, fuel and oil pressure, water and oil temperature, turbo charger boost pressure, exhaust gas temperature, battery voltage, inlet air temperature and throttle position sensor.
  2. Chassis: Wheel speed, steering angle, lateral and longitudinal G-force (applied from braking and cornering), Brake line pressure, damper movement and gear position.
    • Advanced Chassis DAS: Ride height, drive shaft or prop shaft torque, suspension loads, tyre pressure and compound temperature, and brake disk temperature. Optional: aerodynamic parameters, including air speed and local air pressures.
  3. Driver: Both engine and chassis-related factors which are controlled by the driver, such as throttle position, gear position, steering angle and brake line pressure or directly controlled parameters such as engine revs per minute, speed and G-force.

The accurate information provided by telemetry sent by DAS in a practice run takes significant fine tuning, such as ensuring the correct gear ratios are present according to track layout, or that the engine acceleration speed according to throttle position and sensitivity is set to the required conditions of a race. The engine control system will be programmed with suitable engine maps giving the driver more control of the throttle input. On a track with a large number of corners, the first part of pedal movement would be made very sensitive in order to effectively negotiate the course. On other courses, however, the vehicle might be required to come out of the chicanes and directly to peak power levels, thus less sensitivity required on the pedal. An engine is something that produces some effect from a given input. ... REV is a cd by ten foot pole. ... Natural olive oil Synthetic motor oil Oil, in a general sense, is a chemical compound that is not miscible with water, and is in a liquid state at ambient temperatures. ... Turbocharger Cut-away A turbocharger is a device used in internal-combustion engines to increase the power output of the engine by increasing the mass of oxygen and fuel entering the engine. ... The word exhaust can mean:- A verb meaning tire out, as in After the long gallop, his horse was exhausted. ... This article or section does not cite its references or sources. ... In an engine, the throttle is the mechanism by which the engines power is increased or decreased. ... A chassis (plural: chassis) consists of a framework which supports an inanimate object, analogous to an animals skeleton; for example in the construction of an automobile or of a firearm. ... The term lateral can refer to: an anatomical definition of direction. ... The term, longitudinal means front-to-back or top-to-bottom as opposed to transverse which means side-to-side. In automotive engineering, the term, longitudinal refers to an engine in which the crankshaft is oriented along the long axis of the vehicle, front to back. ... The term g force or gee force refers to the symbol g, the force of acceleration due to gravity at the earths surface. ... Damper is a traditional Australian outback food prepared by swagmen, drovers and other travellers. ... Drive Shaft (sometimes written as Drive-Shaft or DriveSHAFT) is a fictional band featured in the American drama/adventure television series Lost, created by J.J. Abrams. ... Torque applied via a crescent wrench Relationship between force, torque, and momentum vectors in a rotating system In physics, Torque can informally be thought of as rotational force or angular force which causes a change in rotational motion. ... Suspension may refer to: suspension (chemistry) suspension bridge suspension (music) suspension (vehicle) (system of shock absorbers and supports that connect a vehicle to its wheels) suspension (civil engineering) (system that connects a structure to its foundation, for example in earthquake protection) suspension (topology) suspension (body modification) suspension bondage suspension (figure... Aerodynamics is a branch of fluid dynamics concerned with the study of gas flows, first analysed by George Cayley in the 1800s. ... Gears on a piece of farm equipment, gear ratio 1:1. ...


The DAS during race time is monitored by engineers in the pit and garage area, who diagnose any faults which may occur. In this case, the DAS is used as an early warning system of potential mechanical failure, allowing the designers and material analysis team to easily distinguish the cause of the fault. This can result in a significant decrease of the danger to a driver. Look up garage in Wiktionary, the free dictionary. ...


A good example of this can be taken from the 2003 Silverstone Grand Prix, when engineers in the pits observed the loss of pressure from one of Coulthards tyres. The DAS allowed the team to recall him from his practice, resolving the fault before a dangerous situation occurred. 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... // Grand Prix (French for Grand Prize) may refer to: Competitions Formula One Grand Prix motor racing Grand Prix motorcycle racing Eurovision Song Contest Grand Prix (snooker) Volleyball Grand Prix Grand Prix tennis tournaments Grand Prix chess tournaments Grand Prix Dressage Grand Prix show jumping Grand Prix (movie), a 1966 film...


“Formula 1 telemetry is the technological lifeblood of the sport, helping the drivers and engineers to better understand how a car functions and how they can optimise its set-up.”[citation needed]


  Results from FactBites:
 
Data Acquisition (647 words)
Once the decision is made (after Level 2) to collect and format the data in the SSPs, the data path continues in the data acquisition system in four stages as indicated in Fig.
During each beam spill from the AGS, acquisition of the data is done independently in each secondary Fastbus crate for all events that pass the trigger.
For the moderate data rates possible in the present configuration of the experiment, the 8-ms time for this step has not been critical because the trigger decision was fast enough that most events were rejected before it was necessary to format them.
  More results at FactBites »


 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m