基于ECA的温室控制系统测量与执行层模型

现代农业温室中，控制设备和数据采集设备硬件种类繁多、接口复杂多样。该文在采用分层结构分布式温室控制系统的测量与执行层中，定义参数变量表描述硬件输入/输出接口。基于事件驱动方式，将ECA规则用于数据采集和控制动作输出过程开发，并将多个ECA规则定义和组合用于描述复杂控制动作时序。测量与执行层封装控制设备的硬件接口差异，使系统具有组态配置功能，并将一些复杂控制驱动过程分解成几个简单的控制子过程来组合实现。

ECA-based Measurement and Execution Layer Model for Greenhouse Control System

In agriculture greenhouse environmental controls, various equipments are used. The measurement and actuator layer in a greenhouse computer control system with hierarchical structure deals with the connection to the equipments and meters in detail. In the measurement and execution layer, the input and output interface of control system are defined as a variables table. The ECA rules are defined and used in the implementation of the data acquisition and control actions. And the complex control actions flow can be described as ECA set. The ECA-based measurement and execution layer encapsulates the hardware interface and makes the control system easily adapt to different equipments through configuration.