VL6180 Range Finder Optical Sensor Module High Accuracy Light Sensor เซ็นเซอร์วัดระยะทางความแม่นยำสูง

โมดูลเซนเซอร์วัดระยะทางใช้ชิฟ VL6180 จาก STMicroelectronics วัดระยะทางจากการวัดระยะเวลาในการสะท้อนกลับของสัญญาณ Time of Flight (ToF) โดยใช้ clock ความเที่ยงตรงสูง ในการจับเวลาของสัญญาณตั้งแต่ถูกส่งจนถึงสะท้อนกลับมา ทำให้เซนเซอร์วัดระยะทาง VL6180 มีความแม่นยำเที่ยงตรงสูง

ตัวอย่างการใช้งาน  เซ็นเซอร์วัดระยะทางแสงเลเซอร์ VL6180 กับ Arduino

1. ต่อขาสำหรับ Arduino Uno ดังนี้

• VIN - 3.3V
• GND - GND
• SCL - A5
• SDA - A4

2. โหลด Library  เซ็นเซอร์วัดระยะทางแสงเลเซอร์ VL6180 ได้ที่นี้

• https://github.com/sparkfun/SparkFun_VL6180_Time_of_Flight_Library/archive/master.zip

3. อัพโหลดโค้ดตัวอย่างลงบอร์ด Arduino 

• https://gist.github.com/penpencool/acec625e97e3e5e2a3a24a218394a70c

IR emitter: 850nm

I2C address: 0x29 (7-bit)

Ambient light sensor: 0.038 to 50klux 16-bit output (3)

ST introduced a new range of precision-accurate optical range-finding module. The new product is based on FlightSense ™ Time-of-Flight technology, which provides designers with superior ranging capabilities.

FlightSense ™ technology provides accurate distance data by measuring the time that light is reflected back by the target object. Conventional sensors can only report the intensity of the reflected signal and do not provide an accurate distance. STMicroelectronics' FlightSense ™ technology offers a unique advantage over traditional infrared sensors, including farther distances (distance from target reflectivity), high frame rate, and low power consumption.

STMicroelectronics' VL6180X module incorporates the FlightSense ™ proximity sensor and ambient light sensor (ALS) to provide basic gesture recognition, simplifying user interface design and improving product performance. The new products can support a number of innovative applications on the market, including smart phones, tablet computers, game control systems, while also enhancing the performance of consumer electronics and industrial products.

FlightSense ™ technology is also used by LG, the global electronics giant, for the laser auto focus function of its G3 smartphone.

VL6180X module with 4.8mm x 2.8mm x 1.0mm LGA12 compact optical package, according to the working environment, accurate measurement of 100mm or more target objects. The module is equipped with I2C interface and two programmable GPIO pins. The main controller controls the optical module via the I2C interface to read data for ranging or ambient light intensity; and GPIO pins can be configured to implement threshold applications.

STMicroelectronics' new VL6180X explorer evaluation kit enables designers to easily leverage all of the potential of this proximity sensor, not only to enable customers to quickly get started with the FlightSense ™ technology system, but also to support the application of the actual device development. The kit includes a detachable USB connector, an STM32Nucleod development board and a VL6180X sensor expansion board. The VL6180X sensor expansion board integrates the sensor, 4-bit LED display and can control the distance measurement and ambient light sensor switch switching function. The display will display data on the distance to the target or ambient light intensity.