Electric Power Tool Actuation Data Buffering for Reliable Transmission

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Solution Overview

Problem

Existing electric power tools face communication failures due to increased data capacity and communication costs when retransmitting information, leading to potential delays in repair processes during construction work.

Innovation Solution

A control device for electric power tools that includes a memory to temporarily store actuation information and transmit it along with the latest information as one data packet, optimizing retransmission to reduce communication failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the electric power tool retransmits information after communication failure, then the information can be delivered to the central control station, but the data capacity and communication cost increase

Engineering Contradiction:

Improveinformation transmission reliabilityVSAvoiddata capacity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The control device determines whether to transmit actuation information before actual communication occurs by checking communication status. This preliminary check prevents unnecessary retransmission of information that would increase data capacity, while ensuring reliable transmission only when communication is actually needed and successful.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes the transmission parameter from continuous retransmission to conditional transmission based on communication status. By adjusting the transmission behavior according to communication success/failure states, the system reduces unnecessary data capacity consumption while maintaining information delivery reliability.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the electric power tool retransmits information after communication failure, then the information can be delivered to the central control station, but the communication cost increases

Engineering Contradiction:

Improveinformation transmission reliabilityVSAvoidcommunication cost

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The control device performs preliminary determination of communication status before initiating transmission. This prevents wasteful energy consumption from repeated retransmission attempts, while ensuring information is transmitted reliably when communication is actually successful.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes transmission parameters based on communication status, transitioning from unconditional retransmission to conditional transmission. This reduces energy loss by avoiding unnecessary communication operations while maintaining reliable information delivery when needed.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the electric power tool retransmits information after communication failure, then the information can be delivered to the central control station, but the number of times of communication increases

Engineering Contradiction:

Improveinformation transmission reliabilityVSAvoidcommunication time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The control device determines communication status before transmission attempts. This preliminary check reduces the number of communication operations by avoiding unnecessary retransmissions, while ensuring information is delivered reliably when communication is actually successful.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system adjusts communication frequency based on status determination, changing from frequent retransmission attempts to targeted transmission only when needed. This reduces communication time by eliminating redundant communication operations while maintaining delivery reliability.

Inventive Principle:

Principle #35Parameter changes

4Loss of information

If the electric power tool transmits actuation information every time a predetermined operation is performed, then the central control station can monitor the tool status, but the communication load increases

Engineering Contradiction:

Improvetool status monitoringVSAvoidcommunication data volume

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The control device applies different transmission behaviors to different types of information based on communication status. When communication fails, it selectively transmits only actuation information rather than all possible data, reducing communication data volume while ensuring critical tool status information reaches the central control station.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12569973B2Control device of electric power tool, electric power tool control method, and computer readable storage medium storing program for performing method of electric power tool control

Publication Date: 2026.03.10 MAX CO LTD

AI summary

A control device of an electric power tool includes: a memory; and processing circuitry. The processing circuitry is configured to: transmit actuation information, which is information indicating that a predetermined operation is performed by the electric power tool, when the electric power tool performs the predetermined operation; and temporarily store the actuation information in the memory when transmission of the actuation information performed fails. When the electric power tool performs the predetermined operation and the actuation information is stored in the memory, the processing circuitry transmits, as one transmission data, the latest actuation information and the actuation information temporarily stored in the memory.