cosmiccloth99
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« on: October 25, 2018, 10:44:26 10:44 » |
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I am trying to figure out out a reliable solution to the following problem. There is an area that is roughly 60x40 yards in which five pieces of heavy equipment operate. Four are haul trucks that are constantly bringing new material to the site and the other is a wheel loader that traverses the entire location stacking and transporting the material to be processed. So at any given time, there may be one of the four haul trucks and the loader in the area. The site is free of vegetation but the stacked material obstructs the loader operators view and at certain times of the day the sun prevents being able to see behind you while backing up. I would like to implement a system that would trigger a warning light in the cab of the loader anytime one of the haul trucks is behind the loader or 30 to 40 feet in any given direction. So far I the options I have explored aren't well suited to this due to the obstructions and constantly changing landscape.
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« Last Edit: October 27, 2018, 02:30:49 02:30 by cosmiccloth99 »
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sadman
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« Reply #1 on: October 25, 2018, 04:40:56 16:40 » |
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check out parallax web page they have sensor from sharp based on IR refractive principle you can find a app note on same site how to increase range
hxxps://www.parallax.com/catalog/sensors/proximitymotion
or try out new topology x-band
hxxps://www.parallax.com/product/32213
sadman
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« Last Edit: October 25, 2018, 04:55:13 16:55 by sadman »
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j0k3r
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« Reply #2 on: October 25, 2018, 07:52:37 19:52 » |
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I think that you can be served with an Optical Flow Sensor.
for example: hxxp://www.aliexpress.com/item/Optical-Flow-Sensor-APM2-5-improve-position-hold-accuracy-Multicopter-ADNS-3080/1893591002.html
or
hxxps://www.aliexpress.com/item/JMT-PX4FLOW-V1-3-1-Optical-Flow-Sensor-Smart-Camera-with-MB1043-Ultrasonic-Module-Sonar-for/32766580894.html
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Parmin
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« Reply #3 on: October 25, 2018, 10:46:56 22:46 » |
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Long shot here, perhaps use the RCWL-0516 radar module?
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bobcat1
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« Reply #4 on: October 27, 2018, 12:54:23 12:54 » |
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Hi You should use a radar module with FM capability who will allow you to measure distance to object There are many module available on the market , This type of module is a bit expansive due to FM capability and cost is in the range of 35~50 USD Whether you plan to buy one unit ,you can order it from elektor site
All the best
Bobi
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bigtoy
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« Reply #5 on: October 27, 2018, 11:17:34 23:17 » |
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What about simply installing a backup camera (with display obviously) in the loader's cab? Then the operator can easily see what's going on behind him.
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Checksum8
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« Reply #6 on: October 27, 2018, 11:32:54 23:32 » |
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CocaCola
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« Reply #7 on: October 29, 2018, 07:54:06 07:54 » |
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Why not use the obvious?
Create GPS enabled devices with wireless communication between the vehicles or with a central hub that spits out proximity or collision warnings?
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bobcat1
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« Reply #8 on: February 27, 2022, 06:45:30 18:45 » |
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Hi
Radar sensor with 30 to 40 meter covering area is the best solution for your fields Take into account this is not a cheep solution.... All the best
Bobi
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Frez
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« Reply #9 on: May 31, 2022, 12:10:50 12:10 » |
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I have used small GPS modules and short range RF transmitters for something similar. GPS modules are quite accurate (~1m) in the open and each vehicle keeps transmitting its position. All vehicles compare their position with that of the others. Any two or more that are closer than the allowed safety distance will trigger an error. It is accurate and does not rely on line of sight.
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solutions
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« Reply #10 on: June 02, 2022, 06:00:01 06:00 » |
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It's a simple queuing problem. Get organized.
Trucks dump material in line along the left side of the material yard, loader works the right side.
Trucks dump material in line along the right side of the material yard, loader works the left side.
Photocell, light source, and red/green light to signal which line trucks are to dump material in. Duplicated. Loader works the red light side.
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sadman
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« Reply #11 on: June 02, 2022, 04:20:21 16:20 » |
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why not give try to doppler radar sensor here is ready application to understand the working principle to use it as proximity sensor also attach a mega link to Elektor article for a more advance sensor type. https://www.rfbeam.ch/product?id=9 (data sheet of sensor used in Elektor article) https://hackaday.com/2017/05/24/radar-sensors-put-to-the-test/ sadman
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giappolo
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« Reply #12 on: September 09, 2023, 04:44:15 16:44 » |
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I use this TI microwave sensor https://www.ti.com/tool/AWR6843ISKIf you use CAN output it is complete
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