Air-conditioning apparatus for enabling updated control data
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Solution Overview
Problem
Conventional air-conditioning apparatuses require a new program to be created for each new model, limiting the ease of increasing the number of models due to their single-program operation.
Innovation Solution
An air-conditioning apparatus with a controller that stores device information and reads control parameters and programs from an external storage device, allowing for flexible control of devices based on their type, enabling easy expansion of model varieties without needing a new overall program.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single program is used to control all devices in an air-conditioning apparatus, then the control system is simple, but the number of models cannot be easily increased
Solution Approach 1:
The control program is divided into device-specific segments. Each device (compressor, fan, etc.) has its own control program stored in the storage unit. The controller reads and executes the appropriate device control program based on device information, allowing flexible combination of devices to create different models without rewriting the entire control system.
Solution Approach 2:
The controller is designed with universal functionality to handle multiple device types. It stores device information indicating the kinds of devices, reads corresponding control programs from the storage unit, and executes them. This universal controller can adapt to different device combinations, enabling the same controller hardware to support multiple air-conditioning apparatus models.
2Reliability
If a new program is created for each new model of air-conditioning apparatus, then the control is precise for each model, but the work量和复杂度 of program management increases
Solution Approach 1:
The control program is segmented into device-specific modules stored in a storage unit. Each device has its own control program that can be independently created, modified, and maintained. This segmentation allows precise control for each device type while simplifying program management, as changes to one device's control program do not affect others.
Solution Approach 2:
Control programs for various devices are pre-stored in the storage unit during system setup. The controller reads the required control program from storage based on device information before executing control operations. This preliminary preparation eliminates the need to create or modify entire programs when adding new device types, reducing program management complexity.
Data Source
AI summary
An air-conditioning apparatus includes a plurality of devices including at least a compressor, and a controller which stores device information indicating the kinds of the devices. The controller reads out a control parameter and a control program for a device which is indicated by kind by the device information, from an external storage device which stores control parameters and control programs for the devices, and controls the device in accordance with the control program.