IoT Wake-Up Power Isolation for Deep Sleep Battery Life
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Solution Overview
Problem
Existing IoT devices with battery power face challenges in achieving long battery life due to standby power consumption, which is necessary for monitoring events and network data reception, hindering their portability and processing capability.
Innovation Solution
The IoT apparatus switches between an active state and a deep sleep state, using event detection modules to trigger power-on logic, with power isolation logic to prevent unnecessary current flow, and isolates CPU connections during deep sleep.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of sensors are arranged in a matrix to increase the number of measurement points, then measurement coverage and detail are improved, but the number of cables and connections increases significantly, making the system complicated and difficult to maintain
Solution Approach 1:
Multiple sensors are electrically connected in parallel to a single cable, merging multiple connection paths into one. This allows the sensor matrix to maintain high measurement coverage while reducing cable quantity and system complexity, as the parallel connection structure enables multiple sensors to share common signal and power lines
2Ease of manufacture
If sensors are connected individually to maintain simple wiring per sensor, then ease of manufacture is improved, but the overall system complexity and cable management difficulty increase
Solution Approach 1:
The patent combines multiple sensor connections into a single cable through parallel electrical connections. Each sensor maintains its individual electrical path while sharing common cable infrastructure, reducing cable management complexity without sacrificing manufacturing ease
3Area of stationary object
If the sensor matrix covers a large area to improve monitoring capability, then measurement coverage is improved, but the cable length and connection complexity increase
Solution Approach 1:
Sensors distributed across a large monitoring area are connected through parallel wiring to a single cable system. This merging approach allows extensive spatial coverage while maintaining manageable connection complexity, as all sensors share common cable infrastructure rather than requiring individual cable runs
Data Source
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AI summary
The information processing apparatus includes a computation processing circuit of which a state is capable of being switched at least between an active state in which power is consumed, and a no-power-usage state in which power is not consumed; an event detection module that detects a first event used to shift the state of the computation processing circuit from the no-power-usage state to the active state; a power isolation circuit that isolates power of the event detection module from power of the computation processing circuit in the no-power-usage state; and an isolation canceling circuit that cancels, in the active state, the isolation performed by the power isolation circuit.