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使用CPS120和Arduino Nano進行壓力測量

2388712 2022-11-23 | zip | 0.02 MB | 次下載 | 免費

資料介紹

描述

CPS120是一種高質(zhì)量、低成本的電容式絕對壓力傳感器，具有全補償輸出。它消耗更少的功率，并且包括用于壓力測量的超小型微機電傳感器（MEMS）。基于sigma-delta的ADC也體現(xiàn)在其中，以實現(xiàn)補償輸出的要求。

在本教程中，說明了CPS120傳感器模塊與Arduino Nano的接口。為了讀取壓力值，我們使用了帶有I2C適配器的Photon。該I2C適配器使與傳感器模塊的連接更容易、更可靠。

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步驟1：所需硬件

實現(xiàn)目標所需的材料包括以下硬件組件：

1.第120頁

2.Arduino納米

3.I2C電纜

4.Arduino Nano的I2C屏蔽

Step 2: Hardware Hookup

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The hardware hookup section basically explains the wiring connections required between the sensor and the Arduino Nano. Ensuring correct connections is a basic necessity while working on any system for the desired output. So, the requisite connections are as follows:

The CPS120 will work over I2C. Reference the example schematic demonstrating how to wire up each interface of the sensor.

Out-of-the-box, the board is configured for an I2C interface, as such we recommend using this hookup if you’re otherwise agnostic. All you need is four wires!

Only four connections are required: Vcc, Gnd, SCL and SDA pins. These are connected with the help of an I2C cable. These connections are demonstrated in the pictures above.

Step 3: Code for Pressure Measurement

Lets start with the Arduino code now.

While using the sensor module with the Arduino, we include Wire.h library. The Wire library contains the functions which facilitate the I2C communication between the sensor and the Arduino board.

The entire Arduino code is given in the below Code section for the convenience of the user.

In the Wire library, Wire.write() and Wire.read() are used to write the commands and read the sensor output. Serial.print() and Serial.println() are used to display the output of the sensor on the serial monitor of the Arduino IDE. The output of the sensor is shown in the picture above.

Step 4: Applications

CPS120 has a variety of applications. It can be employed in portable and stationary barometers, altimeters etc. Pressure is an important parameter to determine the weather conditions and considering that this sensor can be installed at weather stations too. It can be incorporated in air control systems as well as vacuum systems.