Underground Charging Facility Cleaning Control for Mud and Sand Buildup
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Solution Overview
Problem
Movable charging facilities that can be elevated and lowered for storage underground are prone to dirt accumulation from sand or mud, leading to defects such as rust and corrosion.
Innovation Solution
A charging facility with an injection device that cleans the side surface using cleaning liquid when predetermined conditions are met, including elapsed time since last cleaning, number of elevations, and precipitation, controlled by a control device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the charging facility is stored underground when not in use, then the space utilization is improved and interference with walking or traveling is reduced, but the movable portion is likely to become dirty due to intrusion of sand or mud
Solution Approach 1:
The injection device performs preliminary cleaning action by injecting cleaning liquid toward the side surface of the charging facility before dirt accumulation causes defects. The control device determines cleaning timing based on elapsed time, number of elevations, or precipitation conditions, and activates the injection device to wash away sand and mud from the movable portion.
2Reliability
If the movable portion is cleaned frequently, then the reliability is improved by preventing rust and corrosion, but the use of energy increases due to operation of the injection device
Solution Approach 1:
The control device implements periodic cleaning action by determining cleaning timing based on predetermined conditions such as elapsed time from previous cleaning, number of elevations, or precipitation occurrence. The injection device is activated only when these conditions are met, rather than operating continuously, thus balancing reliability maintenance with energy conservation.
3Ease of operation
If the charging facility is made movable for storage, then the ease of operation is improved by reducing interference with walking or traveling, but the device complexity increases due to addition of elevating and injection devices
Solution Approach 1:
The injection device serves multiple functions: it cleans the side surface of the charging facility, prevents rust and corrosion on the movable portion, and extends the service life of the charging facility. The control device integrates cleaning control with the existing elevation control system, managing both elevating and cleaning operations through a unified control mechanism.
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
Effectively washes away dirt at the right time, preventing defects like rust and corrosion by timely cleaning of the movable portion.
Implementation Method 1
an injection device that injects cleaning liquid toward a side surface of the charging facility
Data Source
AI summary
In a first state, a control device executes processes including a step of determining whether a predetermined time has elapsed from a previous cleaning time, a step of determining whether a movable portion has been elevated a predetermined number of times from the previous cleaning time, a step of determining whether there is precipitation from the previous cleaning time, a step of executing injection control, and a step of resetting an elapsed time, the number of elevations, and a precipitation flag.