Understanding Encoders in Energy System Engineering

Play an AI-generated podcast conversation about this lesson

What is the primary function of a sensor?

Convert observable signals into a measurable attribute

Measure a measurable attribute and convert it into a signal (correct)

Interpret signals from an observer

Produce light signals for detection

Which type of sensors must have physical contact with the object being sensed?

Digital sensors

Mechanical sensors

Non-contact sensors (correct)

Analog sensors

What is a characteristic of digital sensors?

Provide a continuous range of voltage or current

Operate based on transistor outputs (correct)

Require physical contact with the object being sensed

Have slower response times than mechanical devices

Which media are commonly used for sensing in digital sensors?

Light and sound Signup and view all the answers

What components are typically used when employing light to sense objects?

Light source (emitter) and light detector (receiver) Signup and view all the answers

In the context of sensors, what is the purpose of pulsing the emitter?

To increase the emitter's operational life Signup and view all the answers

How are industrial sensors typically categorized?

By digital or analog output Signup and view all the answers

What distinguishes non-contact sensors from contact sensors?

They do not require physical contact with the component being sensed Signup and view all the answers

What type of sensor is able to differentiate between colors?

Color-differentiating sensor Signup and view all the answers

Which type of optical sensor uses a special reflector with small prisms to polarize light?

Shiny object sensor Signup and view all the answers

What characterizes an optical sensor known as Focal Length Sensor?

Emits light to a specific focal point for sensing Signup and view all the answers

In which type of optical sensor is the emitter on when the receiver cannot detect the beam from the emitter?

Diffuse Reflective sensor Signup and view all the answers

Which optical sensor is not able to sense transparent objects?

Diffuse Reflective sensor Signup and view all the answers

What distinguishes an Optical Sensor with a fiber-optic cable attached?

It has small size and flexibility due to the fiber-optic cable Signup and view all the answers

What type of sensors are used to detect ferrous objects?

Inductive proximity sensors Signup and view all the answers

Which type of encoders provide more resolution than absolute encoders?

Incremental encoders Signup and view all the answers

What is the main difference between absolute and incremental encoders?

Incremental encoders have a unique pattern for each position on the disk. Signup and view all the answers

Which type of sensor uses a beam of ultrasonic sound as a sonar system?

Ultrasonic sensors Signup and view all the answers

What is the purpose of a mask with opaque lines on a transparent disk in encoders?

To represent each position of the disk Signup and view all the answers

How do inductive proximity sensors detect ferrous objects?

By inducing small eddy currents in metallic objects entering the magnetic field Signup and view all the answers

What happens when an object acts as the second plate of a capacitor in capacitive proximity sensors?

The amplitude of the oscillator increases, increasing voltage Signup and view all the answers

What is the main advantage of incremental encoders over absolute encoders?

Easier interfacing due to fewer outputs Signup and view all the answers

In a load powered sensor wiring scheme, how is the circuit completed?

The load is connected to ground Signup and view all the answers

Which type of sensor is a Sourcing type (PNP sensor) in line powered wiring?

PNP sensor Signup and view all the answers

How many wires are there in a line powered sensor wiring scheme?

Three wires Signup and view all the answers

What is an important consideration when using load powered sensors?

Exceeding the current limit Signup and view all the answers

Which wire of a load powered sensor is connected to power?

The second wire Signup and view all the answers

What is the function of the second wire in a load powered sensor wiring scheme?

To complete the circuit by connecting the load to ground Signup and view all the answers

Which type of sensor allows current flow from load to sensor in line powered wiring?

NPN sensor Signup and view all the answers

What differentiates a Sourcing type (PNP sensor) from a Sinking type (NPN sensor) in line powered wiring?

"The direction of current flow" Signup and view all the answers