What are the options for long range distance sensors?

In summary, the conversation discusses the search for a long range distance sensor with a range of at least 30ft. The speaker suggests looking into laser rangefinders, specifically mentioning phase measuring and time-of-flight types. They also mention the importance of reflectors for improving range and accuracy. The speaker also asks about the need for scanning and recommends SICK and MDL as potential resources for this type of sensor.
  • #1
bassplayer142
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Can anyone point me to a long range distance sensor. I'm not sure what types they have out there other then ultrasonic. Those ones only get me about 10-80 cm. I'm looking for one that is around 30ft or more. Any information on different types of links is appreciated. thanks in advance!
 
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  • #2
I googled Laser Rangefinder, and got a bzillion hits. Hunters and golfers use them, so hopefully you can find one in your price range. There's a wikipedia.org article on them as well.
 
  • #3
There are two types of laser rangefinder depending on your application.
Phase measuring (the red dot ones at your local DIY store) are good to about 30ft and provide an accuracy of fractions of a mm. But they are slow, several seconds for a stable reading, and don't work if there is a lot of ambient light, they work better indoors.
Time-fo-flight (as used in theodolites and golf scopes) they are fast, 100,000 readings/sec if you want, long range,upto 10km, but less accurate (1-10cm).
You can improve the range and accuracy of both if you can put a reflector on the target.
 
  • #4
Do you need scanning (e.g. a 2D obstacle map)? Or just point-and-range? Regardless, when I did this sort of thing a few years ago, SICK was king of the hill (and their products were priced accordingly--but they were really, really good):
http://www.sickusa.com/gus/en.html [Broken]
 
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  • #5
Or http://www.mdl.co.uk/laser_modules/laserace-im/index.html [Broken]
 
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What is a long range distance sensor?

A long range distance sensor is a device that measures the distance between the sensor and an object or surface using various technologies such as ultrasonic, laser, or infrared. It is typically used in industrial, construction, or robotics applications to accurately detect and measure distances over a longer range than traditional sensors.

How does a long range distance sensor work?

The specific workings of a long range distance sensor depend on the type of technology used. For example, ultrasonic sensors emit high-frequency sound waves and measure the time it takes for them to bounce back, while laser sensors use a laser beam to measure the time it takes for the light to reflect off an object. Regardless of the technology, these sensors typically use a transmitter and receiver to send and receive signals and calculate the distance based on the time of flight.

What are the advantages of using a long range distance sensor?

Long range distance sensors offer several advantages over traditional sensors, including the ability to measure distances accurately over a longer range (typically up to several meters), high precision and accuracy, and the ability to measure various surfaces and objects regardless of color or material. They are also often more compact and cost-effective compared to other methods of distance measurement.

What are some common applications for long range distance sensors?

Long range distance sensors have a wide range of applications in various industries. They are commonly used in robotics for navigation and obstacle detection, in construction for measuring distances and levels, in automotive for parking assistance and collision avoidance, and in industrial settings for monitoring and control of equipment. They can also be found in consumer electronics, such as smartphones and cameras, for features like autofocus and gesture recognition.

How do I choose the right long range distance sensor for my needs?

When choosing a long range distance sensor, consider factors such as the range and accuracy needed for your specific application, the type of technology used, the size and weight of the sensor, and any additional features or capabilities you may require. It may also be helpful to consult with a specialist or do further research to find the best sensor for your specific needs.

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