本帖最后由 techlink0723 于 2025-7-24 14:49 编辑
#技术资源# #每日话题# #申请原创# D-ToF 简介：
直接飞行时间(D-ToF)传感器是一种类似于蝙蝠声波定位的技术，它通过发射光脉冲并利用触发时间-数字转换器(TDC)来测量反射光脉冲的时间。TDC的作用类似于秒表，当光电探测器接收到反射脉冲时，记录从脉冲发射到返回所花费的时间。通过以下方程式，测量距离=光子行程时间/2 x 光速，可以将TDC 测量的时间转换为距离值。D-ToF 传感器在以下场合中有着广泛的应用:
手机自动对焦:智能手机前置摄像头启动和后置摄像头的暗光条件下快速对焦。
服务机器人: 如扫地机器人,其中 D-ToF 传感器起到避障和悬崖检测的作用。在 LDS(laser distancesystem)中对环境进行建模和路径规划。
人体存在检测:在智能门锁和自动感应开门中，当人进入检测范围后，可触发系统开启房门，或启动大功率传感器(如面部识别系统)，开启进一步探测。
笔记本电脑用户存在检测:人离开时自动关闭屏幕，提供隐私保护并节省电池电量。
非接触式开关:在感应水龙头中，感应双手靠近动作，从而打开水龙头出水。
优势:
适用于物联网、智能卫浴，接近感应的激光测距
传感器小型测距 1D-ToF 传感开关，发射与接收二合一，感知范围 0.03-2 米
抗阳光干扰，可用于室内和半户外场景
支持阈值距离的一键校准，支持绝对距离校准
满足人眼安全激光安全 Class 1
精确感知距离，不受待测物体材质、颜色影响配合光感方案，实现极低测量功耗
简单易用，可外接 EEPROM 直接使用，也可外挂 MCU
参数：
应用场景:
智能卫浴:感应水龙头，感应马桶开盖，皂液机，干手器.
loT:人体存在感应，屏幕自动点亮，感应灯具
机器人:避障、悬崖跌落检测
1.i2001 Introduction:
Introduction to D-ToF:
A direct time-of-flight (D-ToF) sensor is a technique similar to bat acoustic wave localization that measures the time of the reflected light pulse by emitting a pulse of light and utilizing a trigger time-to-digital converter (TDC). TDC acts like a stopwatch, recording the time it takes from the pulse emission to the return when the photodetector receives a reflected pulse. With the following equation, measuring distance = photon travel time / 2 x speed of light, the time measured by TDC can be converted into a distance value. D-ToF sensors are used in a wide range of applications in:
Phone autofocus: Smartphone front camera activation and fast focus in low-light conditions on the rear camera.
Service robots: such as robot vacuums, where D-ToF sensors play the role of obstacle avoidance and cliff detection. Model and route plan the environment in LDS (laser distancesystem).
Human presence detection: In smart door locks and automatic induction door opening, when a person enters the detection range, the system can be triggered to open the door, or a high-power sensor (such as a facial recognition system) can be activated to enable further detection.
Laptop User Presence Detection: Automatically turns off the screen when a person leaves, providing privacy protection and saving battery power.
Touchless switch: In a sensor faucet, it senses the movement of both hands to open the faucet.
Advantage:
It is suitable for the Internet of Things, smart bathroom, and laser ranging for proximity sensing
Sensor: Miniature ranging 1D-ToF sensing switch, transmitting and receiving 2-in-1, sensing range 0.03-2 meters
Resistant to sunlight interference, it can be used in indoor and semi-outdoor scenes
Support one-key calibration of threshold distance and absolute distance calibration
Meet eye-safe laser safety Class 1
Accurate perception of distance, not affected by the material and color of the object to be measured, with the light sensing scheme, to achieve extremely low measurement power consumption
It is easy to use, and can be used directly with an external EEPROM or an external MCU
Application Scenarios:
Smart bathroom: sensor faucet, sensor toilet lid, soap dispenser, hand dryer.
loT: human presence sensing, the screen automatically lights up, and the lamp is sensitive
Robots: obstacle avoidance, cliff fall detection
For more details, please contact Shenzhen Telink Microelectronics Technology Co., Ltd
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？注册
×
|
楼主
