Motor Sensor Power Sequencing for Detection and Energy Saving

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing power saving control methods for sensors in motors are ineffective when the sensor is not integrated, leading to high power consumption and short sensor lifetime.

Innovation Solution

A control system that starts and stops power supply to the sensor before and after motor operation, with predetermined timing to optimize power usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power is continuously supplied to the sensor, then the sensor can always detect motor operation, but power consumption increases and sensor lifetime decreases

Engineering Contradiction:

Improvesensor detection capabilityVSAvoidsensor power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies periodic action by controlling the power supply to the sensor in cycles - turning it on before motor operation and turning it off after motor operation terminates. This periodic power supply pattern reduces overall power consumption while maintaining the sensor's ability to detect motor operation when needed, thus resolving the contradiction between reliability and energy consumption.

Inventive Principle:

Principle #19Periodic action

2Reliability

If power is continuously supplied to the sensor, then the sensor remains operational, but the sensor lifetime becomes short

Engineering Contradiction:

Improvesensor operational statusVSAvoidsensor lifetime

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

By implementing periodic power supply control - activating the sensor before motor operation and deactivating it after operation ends - the patent extends sensor lifetime by reducing cumulative operating hours while maintaining reliability during actual detection periods.

Inventive Principle:

Principle #19Periodic action

3Use of energy by moving object

If power supply to sensor is controlled to reduce consumption, then energy saving is achieved, but sensor may fail to detect motor operation timing

Engineering Contradiction:

Improvesensor power consumptionVSAvoidmotor operation detection accuracy

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies preliminary action by turning on the sensor power supply before the motor operation starts. This ensures the sensor is already operational and ready to detect motor operation immediately when it begins, maintaining detection accuracy while still allowing power savings during periods when the motor is not running.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12015360B2Control system and automatic analysis device mounted with said control system

Publication Date: 2024.06.18 HITACHI HIGH TECH CORP

AI summary

The purpose of the present invention is to provide a control system which, when a sensor is not built in a motor, saves the power of the sensor and increases the life thereof by on/off-controlling power supply to the sensor before and after the operation of the motor, and also to provide an automatic analysis device. The control system 201 is provided with sensors 309a, 309b, 602, 603 for monitoring the operation of a motor and a control mechanism for controlling the operation of the motor. The control mechanism is provided with: a function of starting power supply to the sensors 309a, 309b, 602, 603 before a first predetermined time from the time when the motor starts the rotating operation; and a function of stopping the power supply to the sensors 309a, 309b, 602, 603 after a second predetermined time from the time when the motor terminates the rotating operation.