ECE Elective 3: Robotics and Sensors
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Questions and Answers

What is the definition of SENSOR?

  • A device that receives a signal and responds with an electrical output (correct)
  • A device that measures pressure, force, and airflow
  • A device that controls actuators in a robotics system
  • A device that converts electrical signals into stimuli

    • What is the function of a PRESSURE SENSOR?

  • Controls actuators in a robotics system
  • Translates stimuli into electrical signals
  • Converts input pressures to electrical outputs to measure pressure, force, and airflow (correct)
  • Receives signals and responds with an electrical output

    • How is STIMULUS defined?

  • A device that receives a stimulus and responds with an electrical signal
  • The quantity, property, or condition that is received and converted into an electrical signal (correct)
  • A device that controls actuators in a robotics system
  • A device that measures pressure, force, and airflow

    • What is the role of a TRANSLATOR in robotics?

    <p>Converts one form of input into another form of output</p> Signup and view all the answers

    What does a CONTROLLER do in robotics?

    <p>Regulates and directs the behavior of other devices</p> Signup and view all the answers

    What is the primary function of an ACTUATOR in a robotics system?

    <p>Converts electrical signals into physical action or movement</p> Signup and view all the answers

    What type of technology is commonly used to fabricate most pressure, force, and airflow sensors?

    <p>Silicon-processing</p> Signup and view all the answers

    What is the typical size of a sensor chip?

    <p>2 mm × 2 mm</p> Signup and view all the answers

    What does an absolute pressure sensor measure relative to?

    <p>Vacuum</p> Signup and view all the answers

    What do gauge pressure sensors provide a measurement relative to?

    <p>Local atmospheric pressure</p> Signup and view all the answers

    What do differential pressure sensors measure?

    <p>Difference in pressure between two points</p> Signup and view all the answers

    Which technology employs a helical or C-shaped sensing element instead of a hollow capsule?

    <p>Bourdon Tube Pressure Sensors</p> Signup and view all the answers

    What material is commonly used in the fabrication of most pressure, force, and airflow sensors?

    <p>Silicon</p> Signup and view all the answers

    What is the result of converting the binary number 111111110010 to hexadecimal?

    <p>FD2</p> Signup and view all the answers

    What is the decoded message from the given ASCII sequence 101001110101001010101100010010110010100000100100010000011010?

    <p>STUDY HARD</p> Signup and view all the answers

    What is another term for a single hex digit in digital electronics?

    <p>nibble</p> Signup and view all the answers

    What is the result of converting the decimal number 59.7 to Binary-Coded Decimal (BCD) format?

    <p>111011</p> Signup and view all the answers

    What is the result of converting the hexadecimal number 1A3 to binary?

    <p>110100011</p> Signup and view all the answers

    What is the decimal equivalent of the binary number 101011?

    <p>43</p> Signup and view all the answers

    What is the octal equivalent of the binary number 010111100?

    <p>174</p> Signup and view all the answers

    What is the BCD number for decimal 347?

    <p>1000</p> Signup and view all the answers

    How many bits are in an ASCII character?

    <p>4</p> Signup and view all the answers

    When using even parity, where is the parity bit placed?

    <p>Before the MSB</p> Signup and view all the answers

    An analog signal has a range from 0 to 5V. What is the total number of analog possibilities within this range?

    <p>infinite</p> Signup and view all the answers

    What is the decimal equivalent of the hexadecimal letters A through F?

    <p>10 through 15</p> Signup and view all the answers

    What is the resultant binary of the decimal problem 49 + 01?

    <p>00110010</p> Signup and view all the answers

    What is the Gray code equivalent of the binary number 1100?

    <p>1010</p> Signup and view all the answers

    Which of the following is an invalid BCD code?

    <p>1101</p> Signup and view all the answers

    An informational signal that makes use of binary digits is considered to be:

    <p>Digital</p> Signup and view all the answers

    Study Notes

    Sensor Definition and Functions

    • A sensor is a device that detects and responds to some type of input from the physical environment.
    • The function of a pressure sensor is to convert physical pressure into an electrical signal that can be measured.
    • A stimulus is any change in the environment that provokes a response from a sensor.

    Robotics Components

    • A translator in robotics is a device that converts one form of energy or information into another.
    • A controller in robotics is a device that directs the actions of other components.
    • An actuator in a robotics system is a component that performs a specific action in response to a signal from the controller.

    Sensor Technology

    • Most pressure, force, and airflow sensors are fabricated using microelectromechanical systems (MEMS) technology.
    • A typical sensor chip is about the size of a fingernail.
    • Absolute pressure sensors measure pressure relative to a perfect vacuum.
    • Gauge pressure sensors provide a measurement relative to atmospheric pressure.
    • Differential pressure sensors measure the difference in pressure between two points.

    Pressure Sensor Types

    • Bourdon tube sensors employ a helical or C-shaped sensing element instead of a hollow capsule.

    Materials and Fabrication

    • Silicon is commonly used in the fabrication of most pressure, force, and airflow sensors.

    Digital Electronics

    • The binary number 111111110010 converts to hexadecimal as FE2.
    • The decoded message from the ASCII sequence 101001110101001010101100010010110010100000100100010000011010 is "Hello".
    • A single hex digit in digital electronics is also known as a nibble.
    • The decimal number 59.7 converts to Binary-Coded Decimal (BCD) format as 0101 1001.1100.
    • The hexadecimal number 1A3 converts to binary as 0001 1010 0011.
    • The decimal equivalent of the binary number 101011 is 43.
    • The octal equivalent of the binary number 010111100 is 274.
    • The BCD number for decimal 347 is 0011 0100 0111.
    • An ASCII character is represented by 7 or 8 bits.
    • When using even parity, the parity bit is placed at the end of the data bits.
    • An analog signal with a range from 0 to 5V has 2^∞ possible values.
    • The decimal equivalent of the hexadecimal letters A through F are 10 through 15.
    • The resultant binary of the decimal problem 49 + 01 is 110001.
    • The Gray code equivalent of the binary number 1100 is 1101.
    • The invalid BCD code is 1010.
    • An informational signal that makes use of binary digits is considered to be digital.

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    Test your knowledge about robotics and sensors in the field of electrical and computer engineering. Explore the concepts of stimuli, sensors, and their role in creating electrical signals.

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