Seeed Grove – Infrared Reflective Sensor 紅外線循跡,循線,避障模組 v1.2

商品說明

紅外線的反射是通過檢測物體表面發射光線的顏色和距離。因此，當一個淺色物體靠近時，信號強度增加，指示燈變成紅色，當深色物體靠近時，信號強度減弱，指示燈熄滅。紅外反射傳感器主要應用在尋線跟跟踪、旋轉測速，或是其他被檢測物體顏色對比強烈的場景。

特徵

• Grove兼容且易於使用
• 高度敏感和可靠
• 佔地面積小
• 適用於不同場合的靈敏度
• 內置指示燈LED
• 通過電位計可調節閾值

 

規格

工作電壓（V）	3.3-5V
工作電流（mA）	14.69-15.35毫安
有效的可檢測距離	4-15毫米
單色線的最小可檢測寬度	10mm
光電晶體管：峰值靈敏度波長	800納米
IR LED：峰值發光波長	940nm
數字輸出	0或VCC
反射光電傳感器	RPR-220

 

出貨清單

• Grove – Infrared Reflective Sensor x1
• Grove連接線 x1

 

技術教學

• Grove – Infrared Reflective Sensor wiki

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Grove – Infrared Reflective Sensor v1.2

Grove – Infrared Reflective Sensor v1.2 can be used for detection of proximity and color of objects. The reflective photosensor -RPR-220 used in this module consists of an infrared light emitting diode and a high –sensitivity phototransistor. Light-colored objects directly in front of the sensor will reflect more infrared light as well as generate more current in the phototransistor than an object with dark-colored surfaces, this can be tell from a built-in indicator LED which will turn red with sufficient flow of current. Also, the intensity of the reflective light increases as the object getting closer. You can adjust the potential-meter on the back of the board if you want to detect a specific object (eg. Black line) at a certain distance.

This sensor is a widely used in applications such as line-following robots, rotary speed detection, auto-data logging on utility meters or other situations where color or distance contrast is sharp.

Features

• Panel-mounting Grove interface
• Digital output: 0 or VCC
• Built-in indicator LED
• Threshold adjustable via potentiometer
• Power supply: 3.5 – 5.5V DC
• Reflective Photosensor: RPR-220
• Effective working distance: 4-15mm
• Minimum detectable width for monochrome lines: 10mm
• Connector: 4 pin Buckled Grove interface
• Dimension: 20mm*20mm