Robot Gas Balancer Pressure Detection Using Moving Averages
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Solution Overview
Problem
Existing gas pressure detection systems in robots inaccurately detect a decrease in pressure, leading to unnecessary stops and reduced productivity due to false alarms.
Innovation Solution
A gas pressure detection device that calculates a parameter Rt(θ) indicating the magnitude relation between reference and measured pressures, and uses a moving average Rtj(θ) to accurately detect pressure changes, reducing false detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pressure is detected by comparing the measured pressure with a given pressure value, then the pressure decrease can be detected, but false detection occurs when there is a large difference between the given pressure value and the measured pressure without actual pressure decrease
Solution Approach 1:
The system performs preliminary actions by measuring pressure at multiple time points before making a determination. Specifically, it measures pressure at a first time point and a second time point, then uses these preliminary measurements to calculate a moving average before comparing with the reference value. This preliminary sampling action prevents false detections by ensuring the pressure reading represents a stable state rather than a transient fluctuation.
Solution Approach 2:
The system implements continuous pressure monitoring by taking measurements at multiple time points and calculating a moving average that continuously updates. This continuous action ensures that the pressure detection system maintains awareness of pressure trends over time, allowing it to distinguish between temporary variations and actual pressure decreases, thereby reducing false alarms while maintaining detection accuracy.
2Reliability
If the pressure is monitored continuously to detect decreases, then the robot can respond to pressure changes, but unnecessary stops occur due to false pressure decrease detections
Solution Approach 1:
The system performs preliminary measurements at multiple time points before triggering any response. By measuring pressure at a first time point and a second time point and calculating a moving average, the system prepares sufficient data to make an accurate determination before taking action. This preliminary data collection prevents unnecessary stops by ensuring that only genuine pressure decreases, not transient fluctuations, trigger operational changes.
Solution Approach 2:
The system uses feedback by continuously monitoring pressure and comparing the moving average of pressure measurements against a reference value. This feedback mechanism allows the system to adjust its operation based on actual pressure conditions, stopping only when a genuine pressure decrease is confirmed through the feedback loop of continuous measurement and comparison, thereby avoiding unnecessary interruptions to robot productivity.
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
The solution effectively reduces false pressure decrease detections, enhancing robot productivity by improving the accuracy of pressure monitoring.
Implementation Method 1
a pressure sensor configured to measure a pressure of gas of the gas balancer
Data Source
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AI summary
A gas pressure detection device 10 detects a decrease in a pressure of gas of a gas balancer 8 of a robot 2. The gas pressure detection device 10 includes a calculating part configured to calculate a parameter Rt(θ) indicating a magnitude relation between a reference pressure Pa(θ) at a rotational angle θ of a rotary arm 14 and a measured pressure Pt(θ) measured at the rotational angle θ, calculate a plurality of parameters Rt(θ) based on a plurality of measured pressures Pt(θ) at different measurement times, and calculate a moving average Rtj(θ) of the parameter Rt(θ) at a measurement time tj that is a j-th measurement time of the measured pressure Pt(θ) (j representing a natural number of 2 or above), and a determining part configured to compare the moving average Rtj(θ) with a reference value R to detect the decrease in the pressure of the gas.