Method and circuit structure for displaying state parameters of central air-conditioning system
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Solution Overview
Problem
The existing methods for inquiring state parameters of central air-conditioning systems are laborious and time-consuming, requiring a wire controller and often necessitate referring to instruction books to interpret fault codes displayed via two-bit nixie tubes, leading to high error rates and inefficiency.
Innovation Solution
A method and circuit structure utilizing an integrated controller with a central control microprocessor, LED display, and inquiry button, which detects and displays state parameters in a rolling mode, eliminating the need for manual interpretation and reducing errors by displaying codes and data values clearly on a four-bit LED nixie tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wire controller is used to inquire state parameters, then the system can display fault codes, but the installation process becomes laborious and time-consuming
Solution Approach 1:
The patent integrates the controller directly into the air conditioning system structure, merging the control function with the system housing. This eliminates the need for separate wire controllers and reduces installation complexity while maintaining fault code display capability through LED indicators.
Solution Approach 2:
The patent introduces a dedicated display circuit as an intermediary component that directly interfaces with the microprocessor. This display circuit includes LED indicators and decoding logic that translate fault codes into visual signals, eliminating the need for external wire controllers while maintaining reliable fault indication.
2Loss of information
If two-bit nixie tubes are used to display fault codes, then the display circuit can show error codes, but technicians must refer to instruction books to interpret the codes, increasing operation complexity and error rate
Solution Approach 1:
The patent uses different colored LED indicators (red, yellow, green) to represent different fault conditions and system states. This visual color-coding system allows technicians to quickly identify and interpret fault codes without needing to refer to instruction books, significantly improving ease of operation while maintaining complete fault information display.
Solution Approach 2:
The patent segments the fault code display into multiple individual LED indicators, each representing a specific fault condition or system state. This segmentation allows for direct visual interpretation of specific issues without requiring technicians to decode numerical values from a manual.
3Loss of information
If a four-bit LED display is used to show codes and data values, then the display can present information more clearly, but the device complexity increases
Solution Approach 1:
The patent designs the display circuit to serve multiple functions: it displays fault codes, system operational states, and diagnostic information using the same LED indicator array. This multi-functionality allows clear information presentation without proportionally increasing device complexity, as the same hardware components handle multiple display tasks.
Data Source
AI summary
A method for displaying state parameters using an integrated controller. The integrated controller includes: a central control microprocessor, an LED display, an inquiry button, and a plurality of state parameter detecting units. The method includes: 1) detecting data of a plurality of monitoring points by the plurality of state parameter detecting units, and sending the data to the central control microprocessor; 2) receiving an order from the inquiry button by the central control microprocessor, and actively scanning state parameters of the monitoring points by the central control microprocessor by turns; and 3) transmitting the state parameters from the central control microprocessor to the LED display in accordance with the order input from the inquiry button, and sequentially displaying the state parameters on the LED display in a rolling mode.