传感器和执行器的区别

1. 传感器：
传感器是用于将物理事件或特性转换为电信号的设备。这是一个硬件设备，它从环境中获取输入并通过转换提供给系统。
例如，温度计以温度为物理特性，然后将其转换为电信号供系统使用。

2. 执行器：
执行器是将电信号转换为物理事件或特性的设备。它从系统获取输入并将输出提供给环境。
例如，电机和加热器是一些常用的执行器。

传感器和执行器的区别：

SENSOR	ACTUATOR
It converts physical characteristics into electrical signals.	It converts electrical signals into physical characteristics.
It takes input from environment.	It takes input from output conditioning unit of system.
It gives output to input conditioning unit of system.	It gives output to environment.
Sensor generated electrical signals.	Actuator generates heat or motion.
It is placed at input port of the system.	It is placed at output port of the system.
It is used to measure the physical quantity.	It is used to measure the continuous and discrete process parameters.
It gives information to the system about environment.	It accepts command to perform a function.
Example: Photo-voltaic cell which converts light energy into electrical energy.	Example: Stepper motor where electrical energy drives the motor.