Variable-Thermoinsulation Garments With a Microprocessor Temperature Controller

Kurczewska, Agnieszka; Leśnikowski, Jacek

doi:10.1080/10803548.2008.11076751

Cited by 15 publications

(4 citation statements)

References 7 publications

(6 reference statements)

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“…[62] There are also PPE solutions that employ ESs to reduce the workload related to manual handling work, such as the case of the CareJack power vest, designed for caregivers and others with physically demanding jobs to help with heavy load lifting. [63] The vest stores the kinetic energy of the wearer's movements and releases it when required, thanks to the electronics incorporated into the textile material. An active thermo-regulation system was also embedded into protective clothing intended for use in cold environments.…”

Section: Wearable Electronics In Ppe Applicationsmentioning

confidence: 99%

Towards a conceptual framework of OSH risk management in smart working environments based on smart PPE, ambient intelligence and the Internet of Things technologies

Podgórski

Majchrzycka

Dąbrowska

et al. 2016

International Journal of Occupational Safety and Ergonomics

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Recent developments in domains of ambient intelligence (AmI), Internet of Things, cyber-physical systems (CPS), ubiquitous/pervasive computing, etc., have led to numerous attempts to apply ICT solutions in the occupational safety and health (OSH) area. A literature review reveals a wide range of examples of smart materials, smart personal protective equipment and other AmI applications that have been developed to improve workers' safety and health. Because the use of these solutions modifies work methods, increases complexity of production processes and introduces high dynamism into thus created smart working environments (SWE), a new conceptual framework for dynamic OSH management in SWE is called for. A proposed framework is based on a new paradigm of OSH risk management consisting of real-time risk assessment and the capacity to monitor the risk level of each worker individually. A rationale for context-based reasoning in SWE and a respective model of the SWE-dedicated CPS are also proposed.

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Section: Wearable Electronics In Ppe Applicationsmentioning

confidence: 99%

Towards a conceptual framework of OSH risk management in smart working environments based on smart PPE, ambient intelligence and the Internet of Things technologies

Podgórski

Majchrzycka

Dąbrowska

et al. 2016

International Journal of Occupational Safety and Ergonomics

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“…This is their ability to exchange heat between the body and the external environment. The rate and manner of heat exchange depends on the insulating properties of the textiles and the insulation and thermal conductivity of each layer of the clothing in the tested system [ 9 , 10 , 11 ]. The values of the mentioned parameters can be determined using the test method with a thermal mannequin in accordance with PN-EN ISO 23537-1:2017-02.…”

Section: Introductionmentioning

confidence: 99%

Study of Influence of Atmospheric Conditions on the Thermal Properties of Sleeping Bags

2022

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The thermal properties of clothing products are influenced by external environmental parameters, such as temperature, humidity, air flow and parameters related to the user’s body, which mainly include temperature and humidity. Depending on the type of raw material, its thickness and the material manufacturing technique, clothing products are characterised by certain insulating properties to protect the human body from external factors. A multilayer system made of different material groups can change the thermal insulating capacity significantly, which cannot be determined by the testing of individual layers used in the production. In order to determine the influence of weather conditions on thermal insulation and air permeability, tests were carried out for two types of sleeping bags (summer and autumn) produced by the same manufacturer, differing in insulation thickness. Simulations were carried out using SolidWorks and verified using a Newton thermal mannequin. During tests, both the temperature (range from −20 °C to 20 °C) and humidity values were changed (range 40–80% humidity). For sleeping bags, the effective thermal insulation decreases along with the increase of temperature and decrease of humidity. It can be observed, for the autumn sleeping bags, that for a temperature of 20 °C and humidity of 60%, the thermal insulation is 1.063 m2·K·W−1, while for a temperature of −20 °C and humidity of 60% thermal insulation increases significantly and amounts to 1.111 m2·K·W−1. A similar situation occurs for the effective thermal insulation of a summer sleeping bag (20 °C/60% thermal insulation is 0.794 m2·K·W−1, while for −20 °C/60%—0.851 m2·K·W−1. During the tests, the humidity and temperature between the layers of the clothing system were also controlled, in order to learn more about the influence of these parameters on the thermal insulation properties of the sleeping bags.

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“…In the conducted research, the knowledge of electric permittivity of threads forming a flat textile product is often needed, particularly in computer simulations of highfrequency electrical properties of textiles. The results of such simulations can be useful when designing textile antennas, [1] textile signal lines, [2,3] textile humidity sensors, [4,5] variable thermoinsulation garments, [6] and so on. The dielectric constant of threads creating a flat textile product (e.g., fabric) must be known, especially in situations when computer modeling is needed.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Electric Permittivity of Threads in Woven Fabric

Leśnikowski

2018

Autex Research Journal

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In the article, a new method for the estimation of electric permittivity of threads (filaments) was presented. The proposed recursive method is based on the results of computer simulation of 3D model of transmission stripline. This model contains a model of flat fabric having threads, with which electric permittivity should be determined. The described procedure uses the method proposed by Barry to obtain permittivity of flat fabric from the so-called s parameters of the simulated stripline. In the proposed method, the permittivity of the flat fabric obtained from simulation is compared with the measured value of permittivity of real flat fabric in order to estimate the threads’ permittivity. This comparison is needed to obtain the electric permittivity of threads forming this fabric. The article also presents examples of the obtained values of threads’ permittivity and discussion about the accuracy of the method. The presented method will be useful in situations where the knowledge of permittivity of threads is necessary in the conducted research.

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Variable-Thermoinsulation Garments With a Microprocessor Temperature Controller

Cited by 15 publications

References 7 publications

Towards a conceptual framework of OSH risk management in smart working environments based on smart PPE, ambient intelligence and the Internet of Things technologies

Towards a conceptual framework of OSH risk management in smart working environments based on smart PPE, ambient intelligence and the Internet of Things technologies

Study of Influence of Atmospheric Conditions on the Thermal Properties of Sleeping Bags

Prediction of Electric Permittivity of Threads in Woven Fabric

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