This document presents an assisted operation system of a robotic arm for positioning near an explosive device selected by the user through the visualization of the cameras on the screen. Two non-converging cameras mounted on the robotic arm in camera-in-hand configuration provide the three-dimensional (3D) coordinates of the object being tracked, using a 3D reconstruction technique with the help of the continuously adaptive mean shift (CAMSHIFT) algorithm for object tracking and feature matching. The inverse kinematics of the robot is implemented to locate the end effector close to the explosive so that the operator can perform the operation of grabbing the grenade more easily. Inverse kinematics is implemented in its geometric form, thus reducing the computational load. Tests conducted with various explosive devices verified the effectiveness of the system in locating the robotic arm in the desired position.

Non-invasive glucose monitoring of patients with type 2 diabetes is one of the most attractive goals for the treatment of this disease. In the present work a prototype of monitoring is proposed using a tetrapolar arrangement based on a SoC (System on a Chip), AFE4300 of Texas Instrument, taking measurements of the finger of the test subjects using the fingertip with both the proposed prototype and with a commercial Accuckeck3200 glucometer. The bioimpedance difference of blood volume decreased. This was supported by in vivo experiments. We therefore suggest that the proposed approach has potentials in practical applications.

A global human–robot interface that meets the needs of Technical Explosive Ordnance Disposal Specialists (TEDAX) for the manipulation of a robotic arm is of utmost importance to make the task of handling explosives safer, more intuitive and also provide high usability and efficiency. This paper aims to evaluate the performance of a multimodal system for a robotic arm that is based on Natural User Interface (NUI) and Graphical User Interface (GUI). The mentioned interfaces are compared to determine the best configuration for the control of the robotic arm in Explosive Ordnance Disposal (EOD) applications and to improve the user experience of TEDAX agents. Tests were conducted with the support of police agents Explosive Ordnance Disposal Unit-Arequipa (UDEX-AQP), who evaluated the developed interfaces to find a more intuitive system that generates the least stress load to the operator, resulting that our proposed multimodal interface presents better results compared to traditional interfaces. The evaluation of the laboratory experiences was based on measuring the workload and usability of each interface evaluated.

This paper proposes a low-cost system for terrestrial mapping and exploration of inaccessible or subterranean environments by using stereo vision with two cameras, image processing and a developed algorithm based on disparity maps that reconstructs a 3D map of the explored environment. The tests were performed on a robot with two stereo vision cameras mounted on a turret with 360° freedom of movement. The tests showed that this proposed system allows to visualize the depth of the objects around the robot and builds a 360° scenario of the explored place.

Water management is a critical aspect of modern agriculture. Efficient use of water resources can lead to increased crop yields and reduced costs. This article presents the design and construction of a real-time remote water tank monitoring system for agricultural applications using a Raspberry Pi and the WhatsApp mobile application. The system aims to provide farmers with an efficient and cost-effective solution to monitor water levels and control water inflow and outflow in a tank using two solenoid valves, enabling them to make informed decisions regarding irrigation, water conservation, and resource management. Tests suggest that integrating Raspberry Pi with the WhatsApp application is feasible and offers an accessible and user-friendly means for remote monitoring.

In this paper is designed and developed an optimized circuit of the output stage of an electrical stimulation system . This system is bases in a "constant current source controlled by voltage" topology, it uses a N-channel MOSFET, comparison circuit and a feedback based on two operational amplifiers. The tests were done first with resistive loads and then with real patients through a rectangular monofasic signal. The used topology and the architecture of the operational amplifier guarantee reliability in the wave form of the output stage and it lets an optimized design through the reduction of size of components.