Moving Body Speed Control Using Predetermined Safety Period
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Solution Overview
Problem
Existing moving body systems experience repetitive acceleration and deceleration due to object recognition, increasing risk and energy consumption, as they adjust target speed based on collision risk assessments.
Innovation Solution
A moving body with a control unit that reduces target speed when a collision risk is determined and returns to the original speed after a predetermined period when the risk is deemed safe, using an object recognition unit to assess collision risk and adjust speed accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the target speed is adjusted frequently based on object recognition results, then the collision avoidance capability is improved, but the repetition of acceleration and deceleration increases causing higher energy consumption and system wear
Solution Approach 1:
The patent applies preliminary action by requiring advance confirmation of safety conditions before restoring speed. The control unit requires that the safety determination be maintained for a predetermined period or a predetermined number of times before returning to the original target speed, rather than immediately responding to each safety confirmation. This anticipatory approach prevents premature speed restoration and avoids unnecessary acceleration-deceleration cycles.
2Speed
If the target speed is adjusted frequently based on object recognition results, then the real-time responsiveness is improved, but the unnecessary repetition of speed changes increases
Solution Approach 1:
The control unit requires advance confirmation of safety conditions before restoring speed. It requires that the safety determination be maintained for a predetermined period or a predetermined number of times before returning to the original target speed. This preliminary verification prevents premature speed restoration and avoids unnecessary acceleration-deceleration cycles, thereby improving traveling efficiency while maintaining appropriate real-time responsiveness to genuine safety changes.
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 approach inhibits unnecessary repetition of acceleration and deceleration, reducing risk and energy consumption by stabilizing the target speed based on object recognition results.
Implementation Method 1
A laser range finder F illustrated in FIG. 1A emits laser light from a light emission surface Fa thereof
Implementation Method 2
receives a reflected wave at each scanning point, and measures a distance d by a reception timing thereof
Implementation Method 3
measures a distance d by a reception timing thereof
Data Source
AI summary
A moving body (1) according to the invention includes: a drive unit (12); a control unit (exemplified by a drive control unit (11) and a speed instruction unit (10b)) that controls driving by the drive unit (12); an object recognition unit (13) that recognizes an object; and a determination unit (exemplified by a degree-of-risk determination unit (10a)) that, in accordance with a recognition result by the object recognition unit (13), determines a degree of risk of collision with the object. In a case where determination is made as being risky by the determination unit, the control unit performs control of reducing a target speed of the moving body (1), and returns the target speed of the moving body (1) to the original one, in a case where determination is made as being safe by the determination unit for a predetermined period in a state where the target speed has been reduced.