Remote-Controlled PIM Test Hammer Power Management
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Solution Overview
Problem
Current PIM test devices have high power consumption and weight due to continuous operation of power amplifiers, making them cumbersome and inefficient, especially for restricted access environments like antenna masts or building installations.
Innovation Solution
The measuring device incorporates a test mallet with a motion sensor that remotely controls the power amplifiers, switching them on only when needed, allowing for reduced power consumption and smaller batteries, along with a real-time controller to quickly switch components in and out of energy-saving modes, and displays results directly on the mallet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power amplifiers operate continuously to enable real-time PIM measurement, then measurement capability is improved, but power consumption and device weight increase significantly
Solution Approach 1:
The power amplifiers are switched off during idle periods and activated only when a measurement is initiated. The control unit receives a start signal, activates the power amplifiers, performs the PIM measurement, then switches them off again. This periodic operation mode maintains measurement capability while dramatically reducing overall power consumption compared to continuous operation.
Solution Approach 2:
The measuring device includes an integrated energy storage unit (battery or accumulator) that provides power during measurement cycles. The device is self-sufficient, requiring no external power supply during field measurements, which enables portable operation while managing power consumption through controlled activation of high-power components.
2Speed
If power amplifiers operate continuously to maintain measurement readiness, then response time is improved, but heat dissipation requirements and device weight increase
Solution Approach 1:
The power amplifiers operate in periodic cycles rather than continuously. They are activated only during measurement periods and switched off during idle periods. This reduces cumulative heat generation and dissipation requirements while the control unit ensures rapid activation when measurements are initiated, balancing response time with thermal management.
Solution Approach 2:
The control unit acts as an intermediary between the measurement trigger and the power amplifiers. It manages the activation sequence, ensuring power amplifiers are switched on only when needed and kept on for the minimum necessary duration. This intermediary control optimizes the balance between response time and heat dissipation by precisely timing the operation of high-power components.
3Reliability
If large batteries and heat sinks are used to support high power consumption, then measurement functionality is maintained, but device portability is reduced
Solution Approach 1:
The power amplifiers are activated in periodic cycles rather than continuously. During field measurements, they are switched on only when a measurement is initiated and turned off afterward. This periodic operation dramatically reduces the total energy consumption, allowing the use of smaller, lighter batteries and heat sinks while maintaining full measurement functionality during active use.
Solution Approach 2:
The device transitions between different operational states: idle (power amplifiers off) and active (power amplifiers on). This dynamic operation allows the system to adapt its power consumption to actual measurement needs. The control unit manages these state transitions, enabling the use of reduced-size power and thermal management components while maintaining measurement capability when required.
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 significantly reduces the device's weight and power consumption, simplifies operation, and allows for more portable and efficient PIM testing by minimizing energy usage and heat dissipation needs.
Implementation Method 1
A start and end of the impact of the test beater on the object under test is detected by means of a motion sensor contained in the test beater
Data Source
Figure 1~4
Figure 2
Figure 3a~3d
AI summary
A test system consists of a measuring apparatus (100) for recording a property of an object (130) to be tested and a test hammer (200) for striking a section of an object to be tested. The test hammer contains a motion sensor (202) and a transmission module (201) for transmitting a strike start indication signal (s2) when the motion sensor detects a motion state which indicates a start of a strike and/or for transmitting an impact indication signal (s3) when the motion sensor detects a motion state which indicates an impact. The measuring apparatus contains a test signal generation unit (113) for generating a test signal, a test signal output unit (114) for outputting the test signal to the object to be tested, a measurement signal receiving unit (116) for receiving a measurement signal produced in response to the output of the test signal, an analysing unit for determining a magnitude of a portion of the measurement signal corresponding to the property to be recorded, a transmission module for receiving a control signal (s1-s3) from the outside and a real-time controller (104) which is able to reliably change some of the components of the measuring apparatus to the energy-saving mode and/or to remove said components from the energy-saving mode in a predetermined time in response to the control signal received from the outside.