Antenna Amplifier Connection Diagnosis Using Dual Test Voltages
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Solution Overview
Problem
Existing methods for determining the connection status between an antenna amplifier and an antenna structure in vehicles with window heaters are ambiguous due to the need for information about the connecting point, making it difficult to unambiguously interpret voltage or current measurements.
Innovation Solution
A method involving the application of two different diagnostic voltages to the connecting link between the antenna amplifier and the antenna structure, with subsequent voltage value readings and comparisons, to determine a faulty connection by ensuring the measured values correspond to the applied diagnostic voltages, independent of the switching state and potential of the window heater.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single voltage measurement is performed at the connecting link, then the measurement process is simple, but the interpretation of the voltage value is ambiguous without information about the connecting point
Solution Approach 1:
The patent applies multiple diagnostic voltages with different magnitudes (first diagnostic voltage and second diagnostic voltage) to the connecting link instead of a single voltage measurement. By comparing the measured voltage values with the applied diagnostic voltages, the system can unambiguously determine the connection status without needing information about the connecting point location.
2Productivity
If the window heater is operating during diagnostic measurement, then the antenna system can be tested during actual use, but the voltage measurements become difficult to interpret due to the heater's switching state and potential
Solution Approach 1:
The patent uses a feedback mechanism where the measured voltage values are compared with the applied diagnostic voltages to determine the connection status. This comparison-based approach allows the system to distinguish between the diagnostic signal and the window heater's operating conditions, enabling accurate diagnosis even when the heater is active.
Solution Approach 2:
The diagnostic voltages are applied in a controlled manner before interpreting the measurements. The system prepares the diagnostic measurement by applying known voltage levels and comparing them with the actual measured values, which allows unambiguous determination of connection status independent of the window heater's state.
3Loss of time
If diagnostic measurements are performed without multiple voltage levels, then the measurement process is faster, but the connection status cannot be determined unambiguously
Solution Approach 1:
The patent changes the voltage parameter by applying multiple diagnostic voltages with different magnitudes. This allows the system to determine connection status more reliably by comparing how the circuit responds to different voltage levels, providing unambiguous results that would not be possible with a single voltage measurement.
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 allows for clear determination of a faulty connection between the antenna amplifier and the antenna structure, avoiding misinterpretation caused by the window heater's operation, and is applicable to various antenna structures with different connecting points.
Implementation Method 1
applying a first diagnostic voltage to a connecting link between the antenna amplifier and the antenna structure, reading out a first voltage value at a measuring point of the connecting link, and comparing the first voltage value with the first diagnostic value
Data Source
AI summary
A method for determining a connection status between an antenna amplifier and an antenna structure includes applying a first diagnostic voltage to a connecting link between the antenna amplifier and the antenna structure, reading out a first voltage value at a measuring point of the connecting link, and comparing the first voltage value with the first diagnostic value. The method includes applying a second diagnostic voltage different from the first diagnostic voltage to the connecting link, reading out a second voltage value at the measuring point, and comparing the second voltage value with the second diagnostic voltage. A faulty connection between the antenna amplifier and the antenna structure is determined if the first voltage value corresponds to the first diagnostic voltage and the second voltage value corresponds to the second diagnostic voltage.