Dynamic Scan Frequency Control for Electric Work Machine Monitoring

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Solution Overview

Problem

Existing tool-monitoring systems for electric work machines face challenges in setting the optimal scan frequency for wireless communication, leading to decreased monitoring accuracy and increased power consumption, making it difficult to efficiently manage the machines.

Innovation Solution

A communication device with a first wireless communication circuit, an information obtainer, and a storing processor that receives and stores information from a transmission device connected to the electric work machine, allowing for efficient management by confirming the presence of the machine within a specified area through event-driven information retrieval and transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the wireless communicator scans tool information at a higher frequency, then monitoring accuracy is improved, but power consumption increases

Engineering Contradiction:
Improvemonitoring accuracyVSAvoidpower consumption
Core Design Contradiction:
Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the scan frequency adjustable rather than fixed. The controller can dynamically change the scan frequency based on operational conditions, allowing the system to optimize between monitoring accuracy and power consumption in real-time. This resolves the contradiction by enabling the system to adapt its scanning behavior to current needs.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by allowing the scan frequency to be modified as a controllable parameter. The controller can adjust the timing and frequency of information scanning based on different operational scenarios, thereby changing the system's behavior to balance monitoring accuracy requirements against power consumption constraints.

Inventive Principle:
Principle #35Parameter changes

2Use of energy by moving object

If the wireless communicator scans tool information at a lower frequency, then power consumption is reduced, but monitoring accuracy decreases

Engineering Contradiction:
Improvepower consumptionVSAvoidmonitoring accuracy
Core Design Contradiction:
Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The system uses dynamic scan frequency adjustment to resolve this contradiction. Rather than operating at a fixed low frequency that compromises monitoring accuracy, the controller can increase scan frequency when monitoring accuracy is needed and reduce it when power conservation is the priority, making the trade-off manageable.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

By treating scan frequency as a changeable parameter, the system can optimize power consumption by reducing scan frequency during periods when continuous monitoring is less critical, while still maintaining the capability to increase accuracy when needed.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If a fixed scan frequency is used, then system complexity is reduced, but efficient machine management becomes difficult

Engineering Contradiction:
Improvesystem complexityVSAvoidefficient machine management
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent resolves this contradiction by implementing dynamic scan frequency control that responds to operational conditions. The controller adjusts scanning behavior based on events and machine state, enabling efficient machine management through adaptive monitoring without requiring overly complex fixed-frequency systems.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system enables efficient machine management by allowing scan frequency parameters to be adjusted based on operational needs. This flexibility in parameter control allows the system to optimize monitoring efficiency for different machine states and operational scenarios.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11995980B2Communication device, communication system, and communication method
Publication Date: 2024.05.28 MAKITA CORP
  • US11995980B2 patent drawing
  • US11995980B2 patent drawing
  • US11995980B2 patent drawing

AI summary

A communication device in one aspect of the present disclosure includes a storage, a first wireless communication circuit, an information obtaining circuit, and a storing processing circuit. The first wireless communication circuit receives first information through an antenna. The first information is wirelessly transmitted from a first transmission device. The first information corresponds to the first transmission device. The first transmission device is configured to be connected to an electric work machine or is connected to the electric work machine. The information obtaining circuit obtains the first information through the first wireless communication circuit in response to a first event being occurred or having occurred. The storing processing circuit stores the first information from the information obtaining circuit into a storage.