Daughter Circuit Board for Motor Controller Interface Standardization
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Solution Overview
Problem
Conventional electronically commutated motors require separate development and production for each user terminal control system, leading to inefficient management, high production costs, and limited application scope due to the need for multiple motor types.
Innovation Solution
A daughter circuit board with integrated circuit units and eight ports for signal conversion, allowing the motor controller to communicate with various control systems using a standardized electric standard, facilitating easy correspondence and management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate motor types are developed for each control system, then compatibility with specific control systems is improved, but device complexity and production costs increase
Solution Approach 1:
The patent implements a universal motor controller design where a single motor controller can interface with multiple different control systems through interchangeable daughter circuit boards. The mother circuit board contains the core control logic, while separate daughter circuit boards are designed for different control systems (air-conditioner, washing-machine, etc.). This allows one motor controller to serve multiple functions and be compatible with various control systems without requiring separate motor developments.
Solution Approach 2:
The motor controller is segmented into two functional modules: a mother circuit board containing the central control and process unit, and interchangeable daughter circuit boards containing system-specific interface circuits. This segmentation allows the core controller to remain standardized while only the interface portion needs to be changed for different applications, reducing overall complexity.
2Adaptability or versatility
If separate motor types are developed for each control system, then compatibility with specific control systems is improved, but production costs increase
Solution Approach 1:
By designing a universal motor controller with interchangeable daughter circuit boards, the patent eliminates the need to manufacture separate motor types for each control system. The standardized mother circuit board can be mass-produced once, and only the relatively simple daughter circuit boards need to be manufactured in variants for different systems, significantly reducing production costs compared to developing complete separate motor systems.
Solution Approach 2:
The patent merges the common control functions into a single standardized mother circuit board that can be used across all applications. This consolidation allows for economies of scale in manufacturing the core controller, reducing per-unit production costs while maintaining compatibility with multiple control systems through the added daughter circuit boards.
3Adaptability or versatility
If separate motor types are developed for each control system, then compatibility with specific control systems is improved, but development time increases
Solution Approach 1:
By segmenting the motor controller into a standardized mother circuit board and interchangeable daughter circuit boards, the patent enables parallel development of different daughter boards while the core controller development occurs once. This significantly reduces total development time compared to developing complete separate motor systems for each control system, as the core control logic and algorithms need to be developed only once.
Solution Approach 2:
The universal motor controller design allows the core control team to develop the mother circuit board once with multi-functional capabilities. Different daughter circuit boards can then be developed independently by different teams or simultaneously, and integrated with the same mother board, reducing overall development time and enabling faster time-to-market for multiple applications.
Data Source
AI summary
A daughter circuit board of an electronically commutated motor for interface signal conversion, having circuit units integrated on the daughter circuit and eight ports for communicating with a control system of a user terminal, the daughter circuit board being plugged into a motor controller for signal conversion so that the motor controller communicates with the control system of the user terminal. The eight ports include an input port of power supply, a port of mode selection, a signal port of PWM, a R/T port for data transmission between the daughter circuit board and the control system of the user terminal, a port of COM, a port for fault signal output, a port of power indication, and a port of speed feedback. The daughter circuit board is simple, easy to correspond with various control systems of user terminals, and accords to the latest electric standard thereby facilitating management and popularization.