Questão FC277207
Mechanical engineers develop an “intelligent co-pilot” for cars Semiautonomous system takes the wheel to keep drivers safe. Jennifer Chu, MIT News Office July 13, 2012 Barrels and
Gramática (Grammatics)
IDECAN · 2012
Mechanical engineers develop an “intelligent co-pilot” for cars
Semiautonomous system takes the wheel to keep drivers safe.
Jennifer Chu, MIT News Office
July 13, 2012
Barrels and cones dot an open field in Saline, Mich., forming an obstacle course for a modified vehicle. A driver remotely steers the vehicle through the course from a nearby location as a researcher looks on. Occasionally, the researcher instructs the driver to keep the wheel straight – a trajectory that appears to put the vehicle on a collision course with a barrel. Despite the driver’s actions, the vehicle steers itself around the obstacle, transitioning control back to the driver once the danger has passed.
The key to the maneuver is a new semiautonomous safety system developed by Sterling Anderson, a PhD student in MIT’s Department of Mechanical Engineering, and Karl Lagnemma, a principal research scientist in MIT’s Robotic Mobility Group.
The system uses an onboard camera and laser rangefinder to identify hazards in a vehicle’s environment. The team devised an algorithm to analyze the data and identify safe zones – avoiding, for example, barrels in a field, or other cars on a roadway. The system allows a driver to control the vehicle, only taking the wheel when the driver is about to exit a safe zone.
Anderson, who has been testing the system in Michigan since last September, describes it as an “intelligent co-pilot” that monitors a driver’s performance and makes behind-the-scenes adjustments to keep the vehicle from colliding with obstacles, or within a safe region of the environment, such as a lane or open area.
“The real innovation is enabling the car to share (control) with you,” Anderson says. “If you want to drive, it’ll just… make sure you don’t hit anything.”
The group presented details of the safety system recently at the Intelligent Vehicles Symposium in Spain.
(http://web.mit.edu/newsoffice/2012/mechanical-engineers-develop-intelligent-car-co-pilot-0713.html – Com adaptações.)
Each verb tense presents verb aspects which reveal what we want to express about the point in time the action takes place. The highlighted verb tense in “The system uses an onboard camera and laser rangefinder…” expresses
- an action that started and finished in the past.
- an action that happened in the past at a definite past time.
- an action that happened in the past at an indefinite past time.
- an action that happened in the past before another past action took place.
- a declaration based on observation.
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“Uses” na frase “The system uses an onboard camera and laser rangefinder” está no presente simples e funciona como uma declaração factual derivada da observação.
Ou seja, o enunciado apresenta uma informação considerada verdadeira no momento da fala: observa-se que o sistema dispõe desses sensores e essa é uma característica real e verificável.
O presente simples aqui não indica possibilidade, plano futuro ou ação contínua abstrata, mas sim um dado concreto — uma descrição objetiva do funcionamento do sistema.
Portanto, a alternativa correta, “a declaration based on observation”, explica precisamente o uso do tempo verbal nesse contexto: uma afirmação factual baseada no que se observa.
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