Sensors Flashcards
A typical sensor will perform signal conditioning before sending out the signal in a digital format. Which of the following does not occur within a sensor module?
Digital-to-Analog Convertor
Control logic
Analog-to-Digital Convertor
Amplification
Digital-to-Analog Convertor
Sensors are generally designed to convert physical phenomena (like temperature, pressure, light, etc.) into digital signals using ADCs. They do not typically perform digital-to-analog conversion as their primary function, but rather converting analog signals into digital form.
A typical sensor module performs the following functions, including:
Analog-to-Digital Conversion (ADC): This process converts the analog signal generated by the sensor into a digital format for further processing.
Amplification: Amplification is often a part of signal conditioning to boost the strength of the weak sensor signal and make it more robust.
Control Logic: Control logic can be present in a sensor module to manage the sensor’s operation, interface with other components, and process the data.
A __________ is a device that converts energy from one form to another. Usually a __________ converts a signal in one form of energy to a signal in another. (Choose the best answer)
transducer, transducer
thermophile, thermometer
convertor, transducer
transformer, transducer
transducer, transducer
Which of the following is NOT a stimulus.
Displacement
Sound
Contempt
Pressure
Contempt
In the context of psychology and sensory perception, a stimulus refers to an event, object, or signal that elicits a response or reaction in an organism or system. Displacement, sound, and pressure are examples of physical stimuli that can trigger sensory experiences or responses in living organisms, while contempt is an emotional or attitudinal response and not a physical stimulus.
A sensor is a device that receives a stimulus and responds with an electrical signal. Electrical here mean a signal that can be channeled, amplified, and modified by electronic devices. Which of the following is NOT a type of response that the microcontroller can handle?
Power
Induction
Charge
Acceleration
Acceleration
Raspberry Pi’s GPIO pins can support which of the following:
Digital input and output
Analogue and digital input and output
Analogue input and digital output
Analogue output only
Digital input and output
Which if the following is not typically used to detect change in a sensor?
Area of conductive plates
Material of conductive plates
Material of dielectric
Distance between conductive plates
Material of conductive plates
The material of the conductive plates, while important for the sensor’s overall performance, is typically a constant and chosen for its electrical properties and compatibility with the sensor’s function. Changes in the material of the conductive plates themselves are not typically used for detecting changes in the sensor.
Which of the following is not part of a Servo Motor (e.g. SG90)?
motor
potentiometer
inductor
microcontroller
inductor
Which of the following is part of a Servo Motor (e.g. SG90)?
motor
potentiometer
inductor
microcontroller
motor
potentiometer
microcontroller
The following sensor uses capacitance to detect water level. Which change in factor are we trying to detect.
Area of conductive plates
Material of conductive plates
Distance between conductive plates
Distance between Dielectric
Area of conductive plates
Select the statement that is true for the logic interface for these devices.
Raspberry PI GPIO:
3.3V - Vcc
2.4V - Voh
2V - Vih
0.8V - Vil
0.5V - Vol
0V - GND
Sensor Pin:
5V - Vcc
2.7V - Voh
2V - Vih
0.8V - Vil
0.4V - Vol
0V - GND
Options:
Both Raspberry PI GPIO and Sensor Pins can be an input/output
Raspberry PI GPIO can be input and Sensor Pins can be an output
Raspberry PI GPIO can be an output and Sensor Pin can be input
Both these devices cannot talk to one another
Raspberry PI GPIO can be an output and Sensor Pin can be input
