Saturday, August 1, 2020

Student creates a robotic guide dog for visually impaired

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Charvi Trivedi

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Student creates a robotic guide dog for visually impaired

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Global Views 360

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August 1, 2020

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The prototype of handheld robotic guide dog

The prototype of handheld robotic guide dog | Source: Anthony Camu via Loughborough University

Anthony Camu, a final year Industrial Design and Technology student at Loughborough University is making headlines with his latest creation of a handheld robotic guide dog. This will be a great help to those people with visual impairment who might find it difficult to accommodate an actual guide dog in their homes.

The robot is named after the Titan goddess of light, ‘Theia’ and is shaped like a virtual gaming controller, which enthused Anthony to create this masterpiece in the first place. Theia listens to the user’s voice to lead them to their desired locations.

If the user has to go to some address (for eg. House number 4, 56th Street, Greenville Residency), they have to say ‘Hey Theia take me to House number 4, 56th Street, Greenville Residency*’. It will then process the actual data available online, like traffic density, and program the most secure route for the user to follow, quite similar to how GPS or satellite navigation works in our cars.

All the information is then communicated to the user via a machine built inside it, called a control moment gyroscope which uses the mechanism of ‘forced feedback’. These are used in spacecraft and their main function is to help in orientation purposes of the spacecraft, or in controlling the ‘spacecraft attitude’ using electric power.

This tiny built-in gyroscope physically moves the user’s hand in the direction they are supposed to go, thus giving them a feeling of being led by an actual guide dog. “The main intention was never to replace guide dogs, but instead to provide an alternative means of giving enhanced mobility options to visually impaired people” says Anthony Camu.

According to Mr. Camu, Theia will also be helpful in confronting challenging interactions like elevators or shops. While crossing a busy street, it will tend to ‘push back’ the users, cautioning them to be more sentient about their current surroundings. Moreover, Theia is quite pocket-friendly, costing about one-tenth the price of a real guide dog.

This tool will also contribute in imparting a sense of belonging and reduce the constant mental hassle and anxiety faced by the visually impaired population of the world. Since they are unable to assess their surroundings, it limits their outdoor movement. This will help them move in the outdoors more often and reduce stress while navigating the traffic on the road.

Anthony has created and experimented with many prototypes of Theia and some work is still needed to correct a few issues before the final launch his product in the market

However, he concluded that Theia has a promising future and it requires just a little more testing and research.“I know this is a grand vision, but I hope people can see the positive effects Theia could have on the blind community” he states.

*This address is fictional. Any similarity is purely coincidental.

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February 4, 2021 4:39 PM

Bedrock of US Democracy: Checks and Balances of Governing Branches

When the American Revolution ended in 1783, the United States Government was in a state of flux. The founding fathers (George Washington, Thomas Jefferson, Benjamin Franklin, John Adams, Alexander Hamilton, John Jay, and James Madison) did not want to establish another country that was ruled by a king. The discussions were centered on having a strong and fair national government that protected individual freedoms and rights and did not abuse its power. When the new Constitution was adopted in 1787, the structure of the infant government of the United States called for three separate branches of government, each with their powers and systems of checks and balances. This would ensure that no one branch would become too powerful because the other branches would always be able to check the power of the other two. 

The legislative branch is described in Article 1 of the US constitution. It has 100 US senators (two for each state), and 435 members in the House of Representatives, which is better known as the US Congress. Making laws is the primary function of the US Congress, but it is also responsible for approving federal judges, US Supreme Court justices, passing the national budget and declaration of war.

The executive branch is described in Article 2 of the US Constitution. The leaders of this branch of government are the President and the Vice President. They are responsible for enforcing the laws the Congress sets forth. The President works closely with a group of advisors known as the Cabinet. They assist the President in making important decisions within their areas of expertise, like defense, the treasury and homeland security. The executive branch also appoints government officials, commands the armed forces, and meets with leaders of other nations. 

The third branch of the US government is the judiciary and is detailed in Article 3. This branch comprises all the courts in the land, from the federal district courts to the US Supreme Court. These courts interpret the nation's law and punish the ones who break them. The Supreme Court settles disputes amongst states, hears appeals from states and federal courts and determines if federal regulations are constitutional. 

Separation of powers in the United States is the backbone of the Checks and Balances System which provides each branch of the government with special powers to check the other branches and prevent any branch from becoming too powerful. Congress has the power to make laws; the President has the power to veto them, and the Supreme Court may declare the laws as unconstitutional. If both the houses of the Congress have a ⅔ majority, they can override the President's veto. The idea of checks and balances is that it is not enough to separate the powers and guarantee the independence of three branches but also that each branch needs to have the constitutional means to protect the system in case of overreach by any other branch. 

 The Check and Balances system also provides the branches with special powers to appoint or remove members from other branches. Congress (Senate and House of Representatives) can impeach or convict the President of high crimes like bribery or treason. The House of Representatives has the power to bring impeachment charges against the President, and the Senate can convict and remove the President from office. Supreme Court candidates are appointed by the President and confirmed by the Senate. Judges can also be removed by impeachment in the House of Representatives and conviction in the Senate. 

The legislative branch, which consists of the Senate and House of Representatives, passes bills, controls the federal budget, and has the power to borrow money on credit on behalf of the United States. It also has the sole authority to declare war, as well as to raise and regulate the military. It oversees, investigates and makes rules for the government and its officers. The Senate can ratify treaties signed by the President and give advice and consent to presidential appointments to the federal judiciary, federal executive departments and other posts. It also has the sole power of impeachment (House of Representatives) and trials of impeachment (Senate). 

The executive branch consists of the President and the Cabinet. The President is the commander-in-chief of the armed forces, executes the instructions of the Congress, may veto bills passed by Congress (but the veto may be overridden by a two-thirds majority of both houses), perform the spending authorized by the Congress, declare emergencies and publish regulations and executive orders. They make executive agreements which do not require ratification and sign treaties, which require approval by the ⅔ of the Senate. They also have the power to make a temporary appointment during the recess of the Senate and can grant "reprieves and pardons for offenses against the United States, except in cases of impeachment."

The Judiciary determines which laws Congress intended to apply in any given case, exercise judicial review and review the constitutionality of laws, determines how Congress meant the law to apply to disputes and determines how laws should be interpreted to assure uniform policies in a top-down fashion via the appeals process.

The system of Checks and Balance was designed and implemented by the founding fathers with such diligence that even after more than 225 years, it is still effective in preventing undue outreach by one of the three branches.

Note: Sites that have been referred to: 

  1. https://www.law.cornell.edu/wex/separation_of_powers_0
  2. https://avalon.law.yale.edu/18th_century/fed48.asp
  3. https://www.britannica.com/topic/Congress-of-the-United-States
  4. https://www.britannica.com/topic/House-of-Representatives-United-States-government
  5. https://www.britannica.com/topic/Constitution-of-the-United-States-of-America
  6. https://www.britannica.com/topic/executive-government
  7. https://www.britannica.com/topic/checks-and-balances
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