Introduction
In this week’s recitation, we have many options for building circuits based on different electronic components. I and my colleagues chose Infrared Distance Sensor and Ultrasonic ranger for assembly. In the whole process, we did not encounter any difficulties, on the contrary, we used the new electronic components in our hands to make interesting circuit series
Materials
1 * Arduino Uno
1 * USB A to B cable
1 * breadboard
1 * buzzer
1* Ultrasonic ranger
1*Infrared Distance Sensor
1 * 10K ohm Resistor
Circuit One
We used Infrared Distance Sensor to do the first project, but compared with the next ultrasound, the accuracy is not very accurate. Perhaps infrared radiation received more interference, leading to data changes.
Circuit Two
Next, the focus of our work is on ultrasound, because we found through experiments that the accuracy of ultrasound is higher, and can measure more distances. With the change of map, we connect buzzer into the circuit. As the distance increases, the sound of buzzer becomes smaller and smaller.
It is worth mentioning that there are four ports of ultrasonic electronic components, and the two ports in the middle can not be separated for transmitting ultrasound and recovering echoes.
Diagram
Q1
First, I chose Infrared Distance Sensor and Microranger on recitation. The ultrasonic range finder is connected with the buzzer in series, which makes the buzzer smaller with the distance between the palm and the ultrasound.If we complicate this circuit and use it in our daily life, I think the infrared range finder can be used to measure the distance between mountains. It will be widely used to measure long distance units. The workers of construction team will use infrared to measure the accuracy in front of building, or the subway shield machine will use infrared to express the accuracy when it is moving. Drive straight. Ultrasound can be used in mining, such as gold mining, or for medical purposes, to give the fetus B-mode ultrasound.
Q2
Because code operation needs to follow the order of operation, just like cooking, if you make a mistake or skip a step, it will affect the whole dish, or even not edible, the code is the same, even if a letter error will make the whole program confused, or even difficult to find errors, causing even greater loss.
Q3
After reading, I think that computers represent the great improvement of human productivity. Computers have become indispensable productivity tools. Without computers, there will be no network, and the world will return to the age of ignorance. The third revolution of science and technology represented by computers has brought human beings into the era of big data. The collection of various kinds of information has made human life more convenient, and at the same time, people’s information has become unsafe. But computers can also make it possible for humans to successfully land on the moon. In the future, computers can make human beings immortal and also make human beings perish.