Capacitive Sensor Accuracy Optimisation by the Frequency Range Appropriate Choice

Measuring rotating machine vibrations requires an electronic instrument called a vibration sensor. In this work, the vibration sensor with capacitive detection is chosen to measure the vibrations movement. In order to fulfill the objectives of reducing the measurement error and achieving high sensor accuracy, this sensor is modeled by the application of motion law. The results obtained by the developed model simulation showed that it was possible to extract a formula linked to relative frequency of the vibrating structure and to the capacitive sensor natural frequency, this makes it possible to reduce the measurement error and improve the capacitive sensor accuracy

An automatic electronic instrument for accurate measurements of food volume and density

Objective: Accurate measurements of food volume and density are often required as ‘gold standards’ for calibration of image-based dietary assessment and food database development. Currently, there is no specialised laboratory instrument for these measurements. We present the design of a new volume of density (VD) meter to bridge this technological gap. Design: Our design consists of a turntable, a load sensor, a set of cameras and lights installed on an arc-shaped stationary support, and a microcomputer. It acquires an array of food images, reconstructs a 3D volumetric model, weighs the food and calculates both food volume and density, all in an automatic process controlled by the microcomputer. To adapt to the complex shapes of foods, a new food surface model, derived from the electric field of charged particles, is developed for 3D point cloud reconstruction of either convex or concave food surfaces. Results: We conducted two experiments to evaluate the VD meter. The first experiment utilised computer-synthesised 3D objects with prescribed convex and concave surfaces of known volumes to investigate different food surface types. The second experiment was based on actual foods with different shapes, colours and textures. Our results indicated that, for synthesised objects, the measurement error of the electric field-based method was <1 %, significantly lower compared with traditional methods. For real-world foods, the measurement error depended on the types of food volumes (detailed discussion included). The largest error was approximately 5 %. Conclusion: The VD meter provides a new electronic instrument to support advanced research in nutrition science.

Toward the Standardization of Limits to Offset and Noise in Electronic Instrument Transformers

The scenario of instrument transformers has radically changed from the introduction of the Low-Power version, both passive and active. The latter type, typically referred to as Electronic Instrument Transformers (EITs), has no dedicated standard within the IEC 61869 series yet. To this purpose, in the authors’ opinion, it is worth understanding how the limits of typical disturbances affecting EITs should be standardized. In particular, after a brief review of the standards, the work presented a mathematical approach to determine the sources of signal disturbances influence, which affect the rms value, on the ratio error. From the results, we discussed that the emergence of disturbances generated within the EIT is a critical aspect to be studied with data of typical off-the-shelf devices. Therefore, to guarantee a correct operation of the devices, a proper standardization of the sources of disturbance should be provided.

ECONOMIC EFFICIENCY OF USING AN OPTICAL-ELECTRONIC INSTRUMENT FOR TESTING A SET OF TRIAL EYE GLASSES

The article discusses the economic efficiency of using an optoelectronic device for verifying a set of test eyeglass lenses in a metrological laboratory, and calculates the payback from introducing the device for MedtechStandard LLC. A characteristic is given to an optical-electronic device, namely, a lensmeter standard multi-functional LEM-1. The calculation of the number of jobs planned for verification of sets of trial eyeglass lenses is carried out. Also, for the company MedtechStandard LLC, the positive effects from the use of an optical-electronic device of the standard multifunctional lens meter LEM-1 were considered, which include reducing the cost of subcontracting, reducing the time it takes to test a set of trial spectacle lenses, additional profit for the enterprise, reducing the risk of loss contract and attracting new customers. The estimated annual program of attorney spectacle lenses is calculated.

Electronic_Khipu_: Thinking in Experimental Sound from an Ancestral Andean Interface

A khipu is an artifact used in the ancient Inca Empire and previous Andean societies to process and transmit statistical and narrative information. It is known as one of the first textile computers, a tangible interface encrypted in knots and strings made of cotton and wool. This system was widely used until the Spanish colonization that banned and destroyed many of the existing khipus. This article presents the creation process of the Electronic_Khipu_, a new interface for musical expression. It takes the form of a MIDI controller, inspired by the original Incan device. The Khipu has been converted into an instrument for interaction and experimental sound generation by weaving knots with conductive rubber cords, thereby encoding musical compositions. The article goes on to document the implementation of the electronic instrument and evaluate its use in live performances. The research also explores the work of significant artists in this conceptual line who, from a decolonial perspective, have transformed and incorporated the khipu into different contemporary expressions of electronic sound art. These works, along with the practical example cited with the Electronic_Khipu_, suggest alternative practices of tangible live coding, computer music, and data sonification. Creative work with sound continues a legacy, almost lost in colonization, of the ancestral practice of weaving knots as code. In addition, some ideas will be presented to enhance the instrument's performance in the future.

To Monitor Moore's Law with Red-Black Trees

Brought Joined lossless plans have impacted evident referenced moves, including flip-flop territories and insane programming [1]. Following quite a while of ordinary assessment concerning the UNIVAC PC, we report the progress of IPv4. Our obsession in this work isn't on whether forward-mess up change can be made versatile, repeated, and lossless, yet rather on breaking down an electronic instrument for assessing forward-mess up update (Sond).

ANALYSIS OF THE DIFFERENCES BETWEEN THE PRESCRIBED AND THE ADMINISTERED DIET TO PRETERM INFANTS USING AN ELECTRONIC TOO

ABSTRACT Objective: To create an electronic instrument in order to analyze the adequacy of the preterm infants’ nutritional therapy, checking the difference between the prescribed and the administered diet. Methods: A prospective and observational study on newborns with birthweight ≤1,500g and/or gestational age ≤32 weeks, without congenital malformations. The electronic instrument was developed based on Microsoft Excel 2010 spreadsheets and aimed at automatically calculating body weight gain, calories and macronutrients received daily by each patient from parenteral nutrition, intravenous hydration and enteral feedings. The weekly means of each nutrient were used to compare the prescribed and administered diets. Results: To evaluate the instrument, 60 newborns with a birth weight of 1,289±305 g and a gestational age of 30±2 weeks were included. Of them, 9.6% had restricted growth at birth and 55% at discharge. The median length of stay was 45±17 days. There were significant differences between prescribed and administered diet for all of the macronutrients and for total calories in the first three weeks. The lipid was the macronutrient with the greatest percentage error in the first week of life. Conclusions: The use of a computational routine was important to verify differences between the prescribed and the administered diet. This analysis is necessary to minimize calculation errors and to speed up health providers’ decisions about the nutritional approach, which can contribute to patients’ safety and to good nutritional practice. Very low birth weight infants are extremely vulnerable to nutritional deficiencies and any reduction in macronutrients they receive may be harmful to achieve satisfactory growth.