active sensor

简明释义

主动式传感器;

英英释义

例句

1.Robots often utilize active sensors to interact with their environment.

机器人通常利用主动传感器与其环境进行互动。

2.The security system features an active sensor that triggers alarms when motion is detected.

该安全系统配备了一个主动传感器，当检测到运动时会触发警报。

3.In autonomous vehicles, active sensors are crucial for safe navigation.

在自动驾驶汽车中，主动传感器对于安全导航至关重要。

4.The drone is equipped with an active sensor that can detect obstacles in real-time.

这架无人机配备了一个主动传感器，可以实时检测障碍物。

5.The active sensor used in this weather station helps measure temperature and humidity accurately.

这个气象站使用的主动传感器有助于准确测量温度和湿度。

作文

In the realm of technology and engineering, sensors play a crucial role in gathering data and providing insights into various systems. Among the different types of sensors, an active sensor is particularly noteworthy due to its unique functionality. An active sensor is defined as a device that emits energy in order to detect changes in the environment and measure the reflected signals. This contrasts with passive sensors, which only receive and measure incoming energy without emitting any signals themselves. The operation of an active sensor involves the transmission of a signal, which interacts with the target object and returns to the sensor, allowing for the analysis of various parameters such as distance, speed, and composition.One of the most common examples of an active sensor is a radar system. Radar works by sending out radio waves that bounce off objects and return to the radar receiver. By analyzing the time it takes for the waves to return and their frequency changes, the system can determine the location and speed of an object. This capability is invaluable in numerous applications, including aviation, maritime navigation, and even weather forecasting. The ability of an active sensor to provide real-time data makes it an essential tool in these fields.Another significant application of active sensors is in remote sensing technologies. For instance, LiDAR (Light Detection and Ranging) is an active sensor technology that uses laser light to measure distances. By emitting laser pulses towards the ground and measuring the time it takes for the light to return, LiDAR can create detailed three-dimensional maps of the terrain. This technology is widely used in environmental monitoring, urban planning, and disaster management, where accurate topographical data is critical.The advantages of using active sensors are numerous. They can operate in various conditions, including low-light environments, where passive sensors may struggle. Additionally, because they generate their own energy, active sensors can provide consistent and reliable data regardless of external factors. However, there are also challenges associated with active sensors. For example, the emitted signals can sometimes interfere with other electronic devices or be affected by environmental conditions, leading to potential inaccuracies in the data collected.In conclusion, active sensors are vital components in modern technology, offering unique capabilities that enhance our understanding of the world around us. From radar systems that track aircraft to LiDAR technologies that map landscapes, the applications of active sensors are diverse and impactful. As technology continues to advance, the development and refinement of active sensors will undoubtedly lead to even more innovative solutions across various industries. Understanding how these devices work and their importance in data collection will help us appreciate the technological advancements that shape our daily lives.

在科技和工程领域，传感器在收集数据和提供各种系统的见解方面发挥着关键作用。在不同类型的传感器中，主动传感器因其独特的功能而特别值得注意。主动传感器被定义为一种发出能量以检测环境变化并测量反射信号的设备。这与被动传感器形成对比，后者仅接收和测量进入的能量，而不发出任何信号。主动传感器的操作涉及信号的传输，该信号与目标对象相互作用并返回到传感器，从而允许分析各种参数，如距离、速度和成分。一个最常见的主动传感器示例是雷达系统。雷达通过发送无线电波，这些波反射到物体上并返回到雷达接收器。通过分析波返回所需的时间及其频率变化，系统可以确定物体的位置和速度。这种能力在航空、海洋导航甚至天气预报等多个应用中都是无价的。主动传感器提供实时数据的能力使其成为这些领域的重要工具。主动传感器的另一个重要应用是在遥感技术中。例如，LiDAR（激光探测与测距）是一种主动传感器技术，它使用激光光来测量距离。通过向地面发射激光脉冲并测量光返回所需的时间，LiDAR可以创建地形的详细三维地图。这项技术广泛用于环境监测、城市规划和灾害管理，在这些领域中，准确的地形数据至关重要。使用主动传感器的优点有很多。它们可以在各种条件下工作，包括低光环境，而被动传感器可能会遇到困难。此外，由于它们产生自己的能量，主动传感器可以提供一致可靠的数据，而不受外部因素的影响。然而，与主动传感器相关的挑战也不少。例如，发出的信号有时会干扰其他电子设备，或受到环境条件的影响，从而导致收集的数据可能不准确。总之，主动传感器是现代技术中的重要组成部分，提供独特的能力，增强我们对周围世界的理解。从跟踪飞机的雷达系统到绘制地形的LiDAR技术，主动传感器的应用多种多样且影响深远。随着技术的不断进步，主动传感器的发展和完善无疑将导致各个行业中更具创新性的解决方案。理解这些设备的工作原理及其在数据收集中的重要性将帮助我们欣赏塑造我们日常生活的技术进步。