Two-Stage Wireless Power Supply Startup System
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Solution Overview
Problem
Existing wireless power supply startup systems require extended time to activate devices with batteries due to reliance on weak wireless signals, leading to increased current consumption and inefficiency.
Innovation Solution
A power supply startup system with a controller that uses a two-stage wireless startup signal, where the first stage provides initial power for signal detection and the second stage supplies power to the control section, allowing for rapid activation and reduced current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the startup circuit receives power only from the wireless signal, then the system can achieve wireless startup, but the startup time becomes excessively long in environments with limited wireless power
Solution Approach 1:
The battery is pre-charged before wireless startup is needed. When a wireless signal is received, the pre-charged battery immediately supplies power to the startup circuit, enabling rapid activation without waiting for wireless power accumulation. This preliminary energy storage resolves the contradiction by providing immediate power while maintaining wireless startup capability.
2Speed
If the wireless signal power is increased to reduce startup time, then the startup speed improves, but the current consumption during standby increases
Solution Approach 1:
The battery is pre-charged during standby periods when power consumption is not critical. When startup is needed, this pre-stored energy is immediately deployed, achieving fast startup without requiring high-power wireless signals during operation. This separates the energy storage phase from the energy consumption phase, resolving the contradiction between startup speed and standby current.
3Power
If the wireless signal reception period is extended to accumulate sufficient power, then the available power increases, but the total time required for startup increases
Solution Approach 1:
The system accumulates energy in the battery during predetermined periods when power availability is not time-critical. When wireless startup is triggered, the pre-stored battery power immediately supplies the startup circuit, eliminating the need for real-time power accumulation. This temporal separation resolves the contradiction between power quantity and accumulation time.
Solution Approach 2:
The battery acts as an intermediary energy storage device between the wireless power source and the startup circuit. Instead of directly receiving and immediately using wireless power, the system stores energy in the battery first, then releases it when needed. This intermediary approach decouples power accumulation from power consumption, resolving the time-power contradiction.
4Speed
If the startup circuit operates continuously to maintain readiness, then the response time improves, but the current consumption during standby increases
Solution Approach 1:
The battery is pre-charged during standby periods so that the startup circuit can be immediately activated when a wireless signal is received. This eliminates the need for continuous operation of the startup circuit during standby, achieving both fast response time and low standby current consumption by separating preparation from activation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables fast activation of devices with batteries using wireless signals while minimizing current consumption during standby, even in environments with limited wireless power reception.
Implementation Method 1
a rectifier circuit which receives and rectifies a wireless signal of a predetermined frequency from the management unit via an antenna to generate a DC voltage
Data Source
Figure 1
Figure 2
Figure 3(a)~3(d)
AI summary
Provided is an apparatus or system which activates a power supply of a device provided with a battery or the like at high speed by a wireless signal while suppressing current consumption on standby. The power supply startup system includes a battery, a device supplied with a power from the battery, and a controller which performs wireless communication with the device. The device includes a power supply section which generates a power supply from the battery, a startup section which receives a wireless startup signal transmitted by the controller and outputs a startup signal to the power supply section, a control section which controls the power supply section and the startup section, and a wireless communication section which performs wireless communication with the controller. The wireless startup signal includes at least two signal regions of a first stage and a second stage. When receiving the first stage of the wireless startup signal, the startup section outputs a first startup signal to the power supply section. The power supply section, to which the first startup signal has been input, supplies a first power to the startup section. When receiving the second stage of the wireless startup signal, the startup section supplied with the first power outputs a second startup signal to the power supply section. The power supply section, to which the second startup signal has been input, supplies a second power to the control section. The control section controls power supply to the power supply section, the startup section, and the wireless communication section and operation thereof.