Current sensing is as it says - sensing the amount of current in use by a particular circuit or device. If you want to know the amount of power being used for any robot component, current sensing is the way to go. Current sensing is not a typical application in robotics. Most robots would never need a current sensing ability. Current sensing is a
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way for a robot to measure it`s internal state and rarely required to explore the outside world. It is useful for a robot builder to better understand power use of the various components within a robot. Sensing can be done for DC motors, circuits, or servos to measure actuator power requirements. It can be done for things like microcontrollers to measure power performance in different situations. It can be useful for things like robot battery monitors. And lastly, robot hand grasp detection devices and collision detection. For example, if the current use suddenly increases, that means a physical object is causing resistance. This device is somewhat expensive as it ranges in the hundreds, but they are very common and you can easily find one available in any typical university lab. These devices are a must for any electrical engineer or robot builder. Operation of this device should be straigtforward. Apply a voltage to your component, and it will quickly give a readout of the current you are drawing. Although this takes seconds and little effort to do, there are a few disadvantages to this method. The first disadvantage is that it is not highly accurate. Usually they can only measure in increments rounded off to the nearest 10mA. This is fine for high powered applications where an extra 5mA does not matter, but for low current draw devices this can be an issue. The next disadvantage is timing. A benchtop power supplies only...
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The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
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The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
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This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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