vb.net read barcode from camera Communicating with the Robot in Software

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36.3 Communicating with the Robot
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Communicating with a robot is easy to do when it is in the room with you. A TV remote control can be your interface to the robot and a series of LEDs or a speaker can be the robot s way of responding to your commands and indicating its status. While this is not how most people imagine robots communicate with their owners (speech, both to and from the robot is the expected method), it is efficient and practical. Problems with this method of communication occur when the robot is in another room. If you want to get the attention of somebody in another room, the first thing that you probably do is shout out that person s name. Unfortunately, current speech recognition sys-
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HOME ROBOTS AND HOW NOT TO CHEW UP YOUR FURNITURE
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FIGURE 36-3 Some of the different situations a stair-climbing robot will encounter and have to overcome.
tems are nowhere near up to the task of being able to differentiate a shout from any other loud background noise and determine if it is a command that it should respond to. A call of Robot, get me a cola! will probably result in the robot staying put and you going thirsty. Using today s technology, the most effective way to communicate with a robot that could be somewhere within the house is wirelessly using something like a home WiFi network. This does not mean that you will have to go to a computer to communicate with the robot; there are many PDAs and other handheld devices available that communicate with home networks via WiFi. When communicating with the robot, it should be able to respond with where it is and its status. Status information should not be difficult for the robot to provide, but it will be a challenge for the robot to determine where it is in your house. If you don t want the robot to move randomly about the house until it finds you, you might want to consider:
Using the infrared or low-power RF beacons in each room discussed in the previous chapter so the robot can query to find its way to you. Adding a TV camera to the robot that broadcasts its view of the world to you and lets you command it, by remote control. Pictures could be transmitted via WiFi or to your television set using a low-power (FCC approved) transmitter.
Of the two methods, the beacon method is more technically impressive, while the remote TV camera is much more fun.
36.4 FROM HERE
36.4 From Here
To learn more about . . . Computers and microcontrollers for robotic control Interfacing circuitry to DC motor loads Input and output Interfacing sensors Building a robotic revolute coordinate arm Creating hands for robot arms Endowing robot arms and hands with the sense of touch Read 12, An Overview of Robot Brains 20, Working with DC Motors 14, Computer Peripherals Part 6, Sensors and Navigation 27, Build a Revolute Coordinate Arm 28, Experimenting with Gripper Designs 29, The Sense of Touch
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PA R T
PUTTING IT ALL TOGETHER
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CHAPTER
ROBOT TASKS, OPERATIONS, AND BEHAVIORS
ll robots are different because their creators have different tasks in mind for their creations to accomplish. A robot designed to find empty soda cans is going to be radically different from one made to roam around a warehouse sniffing out the smoke and flames of a fire. Consider that a true robot is a machine that not only acts independently within an environment but reacts independently of that environment. In describing what a robot is it s often easier to first consider what it isn t:
Your car is a machine, but it s not a robot. Unless you outfit it with special gizmos, it has no way of driving itself (okay, so Q can make a self-running car for James Bond). It requires you to control it, steer the wheels, and operate the gas and brake pedals, and roll down the window to talk to the nice police officer. Your refrigerator is a machine, but it s not a robot. It may have automatic circuitry that can react to an environment (increase the cold inside if it gets hot outside), but it cannot load or unload its own food, so it still needs you for its most basic function. Your dishwasher is a machine, but it s not a robot. Like the refrigerator, the dishwasher is not self-loading, may not adjust itself in response to how dirty the dishes are, and cannot be reprogrammed to accommodate changes in the soap you use, nor can it detect that you ve loaded it with $100-a-plate porcelain so go easy on the rinse cycle, thank you very much.
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