robotics exam 2024 fully solved & updated(download to pass)

1. What are the three R's of robots? Robots Require Respect What are the three conditions that stop a robot? A program/driven action is finished, an alarm condition, mechanical failure. . What are the safe zone, cautionary zone, and danger zone as they relate to a robotic system? The safety zone is where a person can pass near the system safely without having to worry about making contact with the system. The cautionary zone is the area where one is close to the robot, but still outside the work envelope or reach of the system. The danger zone is the area the robot can reach or the work envelope and where all the robots tasks takes place. What is a common way that we keep people out of a robotic danger zone? One of the possible methods to achieve this is to place metallic fencing around the robot, creating a cage that keeps people out of the danger zone while providing one or two entrances to the danger zone. These entrances have sensors in place and when opened, the robot stops automatic operations or in some other way renders itself safe for humans. Who made it a requirement that any time you enter a robot's work envelope you take the teach pendant with you, and what is one of the main benefits of having the teach pendant? OSHA, the system had an E-stop on it to shut down the robot if needed. What are some of the tasks we use proximity switches for? Sense when parts are present, when machinery is in position, to track items on a conveyor line, and many other applications. When it comes to safety, we tend to use the prox switch where we want to insure that something is in a specific position before an operation takes place. What do we use pressure sensors for when it comes to robotic safety? These devices prevent the operator from entering the danger zone and closing the cage behind them, creating a condition where the robot could run in automatic and thus expose the operator to risk of injury or death. . What is the difference between a safety interlock and a presence sensor? Safety interlock has to be made for the system to run in automatic and could be reset with a person in the danger zone while a presence sensor detects anytime that a person is in the danger zone and prevents automatic operation. Describe what happens when a person is shocked. The electricity enters the body at the point of contact with the electrical system, passing through the body and exiting at a grounding point or point somehow connected to earth. What are the three factors that determine the severity of shock? The amount of current that passes through the body, the path that the electricity takes through the body, and duration of the shock. What is the formula for Ohm's law? I = E/R, E = I*R, R = E/I. What is ventricular fibrillation and at what amperage passing through the body does this become a high possibility? If the shock increases to 0.100 to 0.200 amps there is a high possibility of ventricular fibrillation, a condition where the heart quivers instead of actually pumping blood. When it comes to industrial robotics systems what are the common ranges for voltage and amperage? 220 VAC to 480 VAC and have an amperage ranging from 30 A to 100 A. What are the general rules for dealing with emergencies? GR 1 - remain calm GR 2 - Assess the situation GR 3 - perform to the level of your training GR 4 - after its over, talk it out How do we stop serious bleeding? Take a clean bandage, cloth or gauze and apply firm pressure directly to the wound. How do we treat minor burns? Burns that do not have open wounds such as first - degree and minor second - degree, you will want to submerge the area in cool water for 10 to 15 minutes or until the pain subsides then wrap with a dry nonstick sterile bandage. Do not pop blisters should they appear and seek medical help if the area burnt is a sensitive area or pain persists. How do we treat severe burns? Open wound burns such as severe second - degree third - degree or fourth - degree DO NOT place these wounds in water or do not try to remove any clothing that may be stuck in these burns. Cover with a cool moist sterile nonstick bandage or cloth and seek immediate medical help. What do we do for broken bones? Immobilize the limb as best you can with a splint device from your first aid kit. If you do not have a splint use some other rigid material. When a person is being electrocuted, what is the first thing that you must do? Cut the power to the circuit or use a nonconductive item to remove the person out of contact with the circuit.