Charging Gun Return Detection Using Signal Intensity Change
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Solution Overview
Problem
Conventional charging gun returning detection methods for charging piles rely on threshold detection, which is prone to inaccuracies due to aging components and environmental differences, leading to abnormal decisions and reduced user experience.
Innovation Solution
A charging gun returning control method and device that acquire signal intensity changes between the charging gun and the gun seat in a non-charging state, determining whether the operation is gun unplugging or plugging based on thresholds that are mutually opposite numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If threshold detection is used for charging gun returning detection, then the detection method is simple, but the detection accuracy deteriorates due to component aging and environmental differences
Solution Approach 1:
The patent applies preliminary action by establishing a library of standard ultrasonic signal waveforms during the manufacturing process, before actual use. These standard waveforms serve as reference templates for later comparison during charging gun returning detection, eliminating the need for complex real-time threshold adjustments due to environmental variations or component aging.
Solution Approach 2:
The patent changes the detection parameter from fixed threshold values to dynamic waveform comparison. By storing standard ultrasonic signal waveforms and comparing real-time signals against these stored templates, the system adapts to component aging and environmental differences while maintaining detection accuracy without increasing device complexity.
2Device complexity
If fixed thresholds are used for detection, then the control logic is simple, but abnormal decisions occur due to differences between actual detected values and standard thresholds
Solution Approach 1:
The patent transforms the detection approach from using fixed threshold parameters to using dynamic waveform template parameters. By storing standard ultrasonic signal waveforms and comparing real-time signals against these templates, the system achieves reliable detection decisions that adapt to actual operating conditions without significantly complicating the control logic.
Solution Approach 2:
The patent implements feedback by continuously comparing real-time ultrasonic signals with stored standard waveforms and using the comparison results to determine charging gun returning status. This feedback mechanism ensures reliable detection decisions by constantly referencing the standard templates, reducing abnormal decisions caused by environmental variations or component aging.
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
This method improves the accuracy of charging gun returning detection by stabilizing the determination of gun plugging or unplugging operations, even in the presence of noise interference, thereby enhancing user experience and reducing after-sales costs.
Implementation Method 1
ultrasonic charging gun returning detection is to complete charging gun returning detection by detecting the intensity of an ultrasonic signal reflected by a gun head through an infrared signal sensor on the gun seat
Implementation Method 2
detecting the intensity of an ultrasonic signal reflected by a gun head through an infrared signal sensor on the gun seat
Data Source
AI summary
Embodiments of the present disclosure relate to the field of charging piles, and disclose a charging gun returning control method and device for a charging pile, a charging pile, and a medium, wherein the method includes: acquiring a signal intensity change generated between a charging gun and a gun seat when the charging pile is in a non-charging state; determining that a current operation is a gun unplugging operation when it is detected that the signal intensity change is less than a gun unplugging change threshold; and determining that the current operation is a gun plugging operation when it is detected that the signal intensity change is greater than a gun plugging change threshold; where the gun unplugging change threshold and the gun plugging change threshold are mutually opposite numbers.