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In this paper, we introduce a real-time pressure measurement system. A soft material with gauge points is placed ahead of a micro camera, and the material's deformation reflects the pressure applied on it. The image processing circuit mainly consists of an image pre-processing module, a connected area labeled module and a centroid coordinate calculation module. Experiments are implemented to demonstrate...
In this paper, we introduce a tactile sensor which is able to measure the three-dimensional deformation and load simultaneously. The sensor mainly consists of a transparent and elastic body, an 8 × 8 array of markers on the surface of the body and a camera which are used to observe the markers. We present a DFD(Depth from Defocus) algorithm to recover the normal displacement field which has not been...
This is the demonstration description of a wireless force measurement system for total knee arhtroplasty (TKA), which will be adopted in the operation to help the surgeons to place the implants quickly and accurately and consequently enhance the success ratio of treatment.
A wireless force measurement system is presented in this paper. The system, which is used during the operation of Total Knee Arthroplasty(TKA), is designed to assist surgeons to determine the proper position of the knee implants and consequently enhance the success ratio of the treatment. It consists of three parts: a device to measure and transmit force data, a receiver and a terminal to display...
A design of a low-power wireless System-on-Chip (SoC) for the Ligament Balance Measuring System (LBMS) in Total Knee Arthroplasty (TKA) is presented in this paper. It includes a signal conditioning circuit that can support up to 15 force sensors, a 433MHz RF front-end for data transmission, an 8-bit low-power microprocessor, and a FIFO with a digital filter. Idle and wake-up modes are well designed...
This paper proposes a novel wireless force measurement system for the Total Knee Arthroplasty (TKA) to improve the ligament balancing procedure during TKA. The force measurement system is comprised of a Wireless Force Measurement Spacer (WFMS) and the display part. They communicate with each other by the Radio Frequency (RF) signal. The WFMS is designed to measure the force between the WFMS and the...
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