Force Sensor

The vein that carries the deoxygenated blood gets nodule and thick due to defect in their valve which becomes varicose veins. These are most common in legs. These varicose veins are caused by damaged or weak valves of veins that facade to collection of blood in the vein which increase the pressure and cause pain. Mostly the treatment for varicose vein is by invasive methods such as surgery, laser therapy, RF endogenous therapy and sclerotherapy. In any surgery, the first important aspect is an insertion of an intravenous (IV) catheter. The major problem face by the physicians is hazard in accessing vein for IV drug delivery or taking blood samples for test. In case that children, adults, critical care patients etc. It is very difficult task. Unnecessary puncturing of veins occurs due to poor visibility. Wrong puncturing may leads many problems such as blemish or permanently damage the vein. To overcome from these problems there is a need of vein disclosure system. We propose sensor used wearable socks based non-invasive diagnostic& therapeutic solution for varicose vein using thermal and vibration therapy. Since it is a non-invasive method, it gives the patient to aesthetic relief from their pain without pain with IoT based diagnostic and therapeutic solution.

Force Sensing Resistors (FSR) are ultra-thin, low-cost, pressure sensors, which exhibit change in their electrical resistance when force is applied on their surface. The FSR has been used in wide ranging applications in the automotive industry, musical instruments, touch-buttons, portable electronic devices, etc. The FSR is also proving to be promising device for developing applications in healthcare. The present work reviews the reported work on developing novel applications of FSR in non-invasive diagnosis, and monitoring of patients undergoing treatment. The techniques used in biosignal acquisition and its subsequent processing after using FSR, as reported in the literature are briefly reviewed. This is followed by review of the recently reported innovations in diagnostic technology using FSR. The applications of the FSR for diagnosis and monitoring of several major medical disorders are described. The merits and of using FSR are highlighted. The limitations of the technology using FSR are also noted for future advancement. It is observed that application of FSR, despite its present limitations of the technology, opens new opportunities for developing novel applications in bio-medical instrumentation and healthcare.

The groundwork for a contact calibration methodology using a touch probe is developed for an articulated robot arm. This solution is framed within current calibration and metrology issues in robotics based upon the kinematical mechanical design of a serial link manipulator. Accuracy, repeatability, and resolution are explored and a simplistic approach is taken. This exercise is intended to lay the groundwork for exploring the feasibility of integrating a commercial product such as a force sensor or touch trigger probe on the end of a robot arm. Candidate processes and/or applications are identified. Findings indicate that an in- process contact calibration methodology that is accurate, repeatable, and cost effective would be a desirable solution.