answersLogoWhite

0


Best Answer

Most proximity sensors use some sort on field impingement. Hall effect devices use the movement of electric current to generate a signal. Magnetic devices use a magnet to sense the field or close a circuit by repulsion.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

12y ago

There are several types.

One sort uses a special transistor known as a 'Hall effect' transistor. The gain of these transistors alter when the magnetic field around them changes. This needn't be a magnet, but merely magnetic material, such as steel.

There is an amplifier and switching circuit built into the sensor, which runs off the suppply circuit in the switched line.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do proximity sensors work?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Advantages of proximity sensors?

Advantage of proximity sensor?


How does proximity sensor work?

Without physical contact detecting the presence of objects is the purpose of proximity sensors. They work based on inductive, magnetic, photoelectric and capacitive properties of objects.


Do proximity sensors help keep my home safe at night?

No. Proximity sensors are generally used to detect objects, not people. Motion sensors use a different technology.


Different types of sensors?

Sensors provide information to other parts of the machine. There are temperature, pressure, level, flow, biosensors, gas, and proximity sensors.


What are the advantages and disadvantages of inductive proximity sensor?

The advantages of inductive proximity sensors areThey are very accurate compared to other technologiesHave high switching rateCan work in harsh environmental conditionThe disadvantages of inductive proximity sensor areIt can detect only metallic targetsOperating range may be limited


Where can one purchase a proximity switch?

One can purchase a proximity switch from ebay and HTM Sensors. A proximity switch is used to open or close an electrical circuit where they make contact with an object. They are used in robotics and manufacturing items.


What sensors does the robot have?

The sensors that an engineer puts on a robot are entirely dependent upon the functions that the engineer perceives that the the robot will be called upon to perform. Some, but not all, of the sensors may be: proximity sensors, pressure sensors, light sensors, magnetic sensors, a camera, temperature sensors, accelerometer, speed sensor... The question isn't, "what sensors does a robot have", but rather, "what sensors does the engineer think that the robot should have?"


Is there such thing as sensors that pick up ultrasonic frequencies?

Yes there is. They're commonly known as sonar sensors. Sonar sensors are usually a coupled device which emitt and receive high frequency sound waves and can be used to detect objects within a close proximity.


How proximity work?

play the math questions.


What do parking sensors in a vehicle do?

Parking sensors are for the driver to be able to tell a proximity of other vehicles and objects around the car. This is a helpful tool if backing out of tight spaces and places that have a lot of things scattered around the vehicle.


How weather affects oxygen sensors?

O2 sensors do not work correctly when cold.


Can I buy aftermarket proximity sensors for my car to help me when I back up?

Yes you can. Normally they require professional installation, and possbile integration into your electrical system.