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Grove - IR Distance Interrupter 紅外線循跡模組V1.2（101020175）ITR9909
【Part List】清單：
- Grove - IR Distance Interrupter v1.2 Ｘ1
- Grove - cable Ｘ１
Grove - IR Distance Interrupter is used to detect any object blocking the path of light, which is based on ITR9909.／用於偵測任何阻擋光路的物體，它基於 ITR9909。
【Features】特徵：
- 〔Highly sensitive and reliable〕： With the support of ITR9909 reflective photosensor, when the reflected light is detected, the high level can be quickly output.
- 〔Longer detectable distance〕： Up to 40cm, make users more comfortable to use.
- 〔Adjustable sensitivity for various occasions〕： The sensitivity of the sensor can be changed by simply adjusting the potentiometer with a screwdriver.
- 〔More durable〕： No fear of easy damage.
- 〔Grove unified socket〕： The sensor ensures "Plug and Play" and could be versatile for various applications.
【Specifications】規格：
- Dimensions：130mm x90mm x12mm
- Weight：2.5 g（for the module模組）／ 8.5 g(for all single package)
- Battery：Exclude
- Operating voltage(V)：3.3V or 5V
- Operating current(mA)：Maximum：20mA
- Effective detectable distance：7.5 ~ 40cm
【Application】應用：
- Mouse Copier
- Switch Scanner
- Floppy disk driver
- Non-contact Switching
- For Direct Board
- Line following robots
- Optical encoders
- Object counting applications
Grove - IR Distance Interrupter is used to detect any object blocking the path of light, which is based on ITR9909. The ITR9909 consist of an infrared emitting diode and an NPN silicon phototransistor, encased side-by-side on converging optical axis in a black thermoplastic housing, The phototransistor receives radiation from the IR only. This is the normal situation. But when an object is in between, phototransistor could not receive the radiation. Any white (or lighter) colored surface reflects more than black (or darker) colored surface.
When the reflected light is detected, it produces Digital HIGH (or Binary 1) output on the SIG pin. The on-board LED indicator will also glow. If no reflection is detected or if the object is too far from the sensor, the output on the SIG pin stays at Digital LOW (Binary 0). The on-board LED indicator will be off as well. The detectable range of this sensor is 7.5–40 cm. The module incorporates a Rail-to-Rail Operational Amplifier to amplify the output of phototransistor. There is a potentiometer which can be used to adjust the gain of the amplifier, that is, sensitivity of detection.
【Note】：This product is mildly sensitive to non-IR radiations also and hence any bright light on photosensor impairs or disturbs IR light detection.／本產品對非紅外線輻射也具有輕微的敏感度，因此光電感測器上的任何強光都會削弱或乾擾紅外光檢測
We have developed more than 400 Grove modules, covering a wide range of applications that can fulfill various needs. Click to explore the Grove Sensor family and get started to Grove your Idea. For all Grove users (especially beginners), we provide you with guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your use of the product.
【Hardware Overview】：
- ITR9909 Reflective photosensor, Highly sensitive reflective photosensor.／反射式光電感測器
- LM393 operational amplifier, rail-to-rail operational amplifier.／運算放大器
- LED Indicator, The LED will turn on when the received infrared light intensity exceeds a preset level.／LED 指示燈
- Light sensitivity adjusting potentiometer , adjust the sensitivity of reflective photosensor to light.／光靈敏度調節電位器
