Encoder Position Data Formatting for Variable Multi-Turn Transmission
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Solution Overview
Problem
In control systems with encoders, the varying amount of multi-rotation data in battery-less encoders leads to issues with serial data transmission, often resulting in incomplete or inefficient communication of position data, requiring manual parameter settings and potentially losing high-resolution data accuracy.
Innovation Solution
The encoder and control system include a position information generating unit, a configuration information generating unit, and a transmission unit that transmit position information and configuration information, allowing the control device to process the data optimally by determining the ratio of multi-rotation and absolute position data, thereby ensuring efficient communication without manual settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If position data is always transmitted in a fixed configuration format, then communication protocol simplicity is improved, but serial data bit efficiency deteriorates
Solution Approach 1:
The encoder dynamically adjusts the position data configuration format based on the actual data requirements. The configuration information indicating the data format is transmitted along with the position data, allowing the data transmission format to be flexible and adaptive rather than fixed, thereby improving bit efficiency while maintaining clear communication protocols
Solution Approach 2:
The patent changes the parameters of the position data configuration by transmitting configuration information that indicates the specific data format being used. This allows the system to adapt the data format parameters (such as the number of bits for absolute position data versus multi-rotation data) to match the actual requirements, improving serial data bit efficiency without complicating the communication protocol
Data Source
AI summary
An encoder includes a position information generating unit that generates position information made of a predetermined amount of data and including absolute position data of an object to be detected; a configuration information generating unit that generates configuration information representing a ratio of the absolute position data in the amount of data during serial communication; and a transmission unit that transmits, to the control device, the position information and the configuration information as a series of serial data or as separate serial data. The control device includes a reception unit that receives the position information and the configuration information transmitted from the encoder; a storage unit that stores the received configuration information; and a control unit that processes the received position information on the basis of the stored configuration information.