If nothing else, humans have proved amazingly thorough builders of cables. Utility lines are everywhere, but they need to be inspected, and the equipment to do that is expensive and cumbersome. Not so with this creation!
Engineers from the University of California, San Diego have created this largely 3-D-printed V-shaped robot that, when scaled, could cost less than $1,000 each. It's called the SkySweeper, and it inches its way along a cable sort of like a caterpillar, one arm pulling and then locking, followed by the next arm moving forward and then locking. You can see it more clearly in the video above.
Thanks to its inexpensive materials and manufacturing costs, it could be a lot more appealing than previous robots, like the Expliner from HiBot. The Expliner can inspect four cables at once, so it's good for major cities and other high-capacity jobs, but it's a bit of an overkill for smaller jobs. The SkySweeper seems like a great option for those.
Transmission line/Power line robotics is definitely an emerging field.
This is a simple interesting concept.
What the article misses regarding other power line robots like Expliner or LineScout (search for them on the internet they are great robots!)
1. These robots have to operate on high voltage power lines up to 750,000 V an 1200 A.
There are extremely high electric and electromagnetic fields are that can in short order damage the electronics and the sensors. Also you need to operate the robot for several hours, communicate with the robot collecting data from various type of sensors and/or optical or infrared cameras.
2. You need a stable sensor platform for the sensors. Jumping up and down is not considered stable.
3. There are obstacles on the power lines such as spacer dampers, vibration dampers and clamps. With this simple robot you cannot bypass them.
4. These robots need to be installed on energized lines and the electrical flash overs would burn the electronics right away if not protected properly.
If you see some other groups created simple solutions even Lego replica's of transmission line robots.
If you need further information on Powerline robotics check out the conference proceedings from the International Conference on Applied Robotics for the Powerline Industry.
The first 2010 conference was a blast!
The second was great and more coming
Regardless this is an interesting concept and this project show how power full 3-D printing is creating complex items on a low budget.
Congratulation for the development!
PopSci has reached a new low by re-publishing the despicable pro-abortion article by Katie McDonough from Salon:
Fetal pain is NOT a lie. It's just not understood very well. Despite the article's assurances that pain is felt only after specific neural development occurs at 24 weeks, the medical literature is divided on fetal pain. The fetus responds to stimuli long before 24 weeks and how a fetus perceives a stimulus as pain is not understood at all.
This article isn't science, it's politics. Legislatures in some states, responding to the changing mood of the electorate, are creating legal consequences for terminating the life of a viable unborn child simply because it is inconvenient for the mother or father (or both).
The author is miffed that they could be so callous as to restrict a mother's choice in the matter. She neglects to consider how callous it is to ignore the unborn infant's choice (or lack thereof). She promotes the mother's welfare and dismisses the welfare of the fetus, which at 20 weeks (5 months) is distinctly human and has almost all the features of the baby it will be if allowed to live.
In McDonough's screed she writes about the experience of one abortion doctor: "Patients are now asking me about fetal pain. This was not happening 15 years ago," Davis says. "When you're sitting in your office with a woman who is 22 weeks (5 1/2 months) into a pregnancy with a severe fetal anomaly — she's depressed, she's stressed and now she's worried, 'Is my baby going to feel pain?' It's just another thing these women have to struggle with. And why? These are created concerns. They are not based in science, they are based in politics."
No, these are natural maternal concerns that most mothers have for their developing baby. It's not a "created concern" and it has nothing to do with politics.
Have a look yourself at an infant born at 24 weeks and reflect on the morality of terminating a 24-week old fetus:
(Since PopSci prevented comments on the article, I'm posting it to several other articles. Are you paying attention, editors?)
uptil I looked at the paycheck which was of $6148, I didn't believe ...that...my mother in law was like actualy bringing home money part-time at there labtop.. there uncle has done this for only 6 months and just now paid for the mortgage on their home and bourt a brand new Toyota. we looked here,