Industry: Computer Region: Germany Transaction price: US$ 1 million Transaction method: equity investment
Project introduction:
The University of Brunswick, Germany has developed a computer implementation method for checking and correcting the impedance profile of time domain reflectometer, and plans to carry out cooperation and development based on patent authorization.
Problems and current situation
Time domain reflectometer (TDR) is a process of transmitting an input signal to an object to be studied (such as a conductor) and detecting its specific reflection. If the research object has a uniform impedance and a correct electrical terminal, no reflection will occur and the input signal will be absorbed by the electrical terminal. The change of impedance will lead to the reflection of the input signal. The impedance change or discontinuity can be quantified by the amplitude of the reflected signal and the position of the discontinuity on the running length. In application, the kink or diameter change of the cable to be tested can be detected. However, in application, the initial reflection of the measurement signal can only be well analyzed. Further reflections will be distorted or superimposed by multiple reflections. The frequency dependence of object characteristics will cause the reflected signal to change and be indistinguishable.
Innovative solutions
The received reflected signal is based on the interaction between the input signal and the object to be measured, and the object to be measured has one or more interference points, so the input signal will be partially reflected. In the prior art, these reflected signals are used to create an analog signal and Fourier transform it. According to the transformed signal, an analog signal of the object to be detected is created in the frequency domain. By applying the analog signal to the object simulation, it is now possible to compare the analog signal with the reflected signal, thus evaluating the analog signal. If the deviation is relatively small, it can be considered that the effect of object simulation is good enough, so the type and location of fault can be fully determined. If the deviation is too large, you can continue to iterate until you get a satisfactory result.
Advantages:
● Accurately measure the characteristics of conductors and similar objects to be measured.
● Effectively eliminate the interference effect of multiple reflections.
● Determinable dispersion
● Extension sum for known TDR subprocesses.
● Optimization algorithm
Application:
● Implemented in commercial measuring instruments (such as TDR equipment) for quality inspection of circuit boards or similar equipment.
● Testing data transmission system (such as high-frequency circuit board for fast data transmission)
Cooperation mode:
This technology has successfully developed and tested the software and processes, and can provide cooperation and development based on patent authorization.