Wireless Temperature Sensing With Broadcast Transmission and Low Power

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing temperature sensors are typically wired, limiting their installation and maintenance, and face challenges with size and service life due to power supply constraints.

Innovation Solution

A wireless temperature sensor that collects data at a first frequency and transmits it to a receiving device at a lower second frequency without establishing a communication connection, using a control module to manage power and reduce power consumption by omitting unnecessary power conversion circuits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If a large-capacity and large-volume power supply is used in the temperature sensor to support long-term use, then the service life is extended, but the volume of the temperature sensor becomes large

Engineering Contradiction:

Improveservice lifeVSAvoidvolume of temperature sensor

Core Design Contradiction:

Duration of action of moving objectVSVolume of moving object

Solution Approach 1:

The patent extracts the power conversion function from the sensor node by using an external power supply device instead of incorporating a large-capacity power supply inside the sensor. This removes the volume constraint while maintaining long-term operation capability through wireless power transmission.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The external power supply device serves multiple functions: it provides power to multiple sensor nodes, performs power conversion, and enables wireless communication. This multi-functionality eliminates the need for dedicated power conversion circuits in each sensor, reducing overall system volume.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If wired transmission is used to transmit temperature data, then data transmission reliability is ensured, but installation and maintenance become difficult

Engineering Contradiction:

Improvedata transmission reliabilityVSAvoidinstallation and maintenance

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical wired connection system with a wireless communication system. Sensor nodes transmit temperature data wirelessly to the power supply device, eliminating physical data lines while maintaining reliable data transmission through structured wireless communication protocols.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Volume of moving object

If a small-capacity and small-volume power supply is used in the temperature sensor to facilitate installation, then the volume is reduced, but the service time becomes short

Engineering Contradiction:

Improvevolume of temperature sensorVSAvoidservice time

Core Design Contradiction:

Volume of moving objectVSDuration of action of moving object

Solution Approach 1:

The patent introduces an external power supply device as an intermediary between the sensor nodes and the power source. This mediator provides continuous power to small-volume sensor nodes with minimal onboard power, enabling long service life without requiring large internal power supplies.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Adaptability or versatility

If power conversion circuits are included in the temperature sensor, then power management flexibility is improved, but power consumption increases

Engineering Contradiction:

Improvepower management flexibilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts power conversion circuits from the sensor node and relocates them to an external power supply device. This eliminates the power consumption associated with onboard power conversion while maintaining power management flexibility through external control.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20260022974A1Wireless Temperature Sensor and Communication Method Therefor

Publication Date: 2026.01.22 AB SKF SKF PATENT DEPARTMENT

AI summary

The present disclosure pertains to a wireless temperature sensor and a communication method thereof. The communication method may include collecting temperature data at a first operating frequency and determining whether the temperature data is within a predetermined threshold range. When the temperature data is within the predetermined threshold range, the method may include transmitting the temperature data to a temperature data receiving device at a second operating frequency by broadcasting without establishing communication connection with the temperature data receiving device. The first operating frequency can be greater than the second operating frequency.