Computer control system for ventilation and dust extraction system in a grain mill

Głównym celem pracy jest przedstawienie komputerowego systemu sterowania układem wentylacyjnym i odpylającym w młynie zbożowym. Dzięki zastosowaniu takiego systemu możliwe jest zwiększenie poziomu ochrony zdrowia pracownika poprzez zabezpieczenie go przed warunkami niebezpiecznymi dla jego zdrowia. Jednym z takich czynników zagrażającym zdrowiu pracownika w młynie jest pył zbożowy i mączny. W pracy przedstawiono idee kompleksowego systemu kontrolującego poziom zapylenia w młynie zbożowym. Zastosowanie takiego zintegrowanego systemu powoduje zmniejszenie wpływu czynnika szkodliwego (pyłu zbożowego i mącznego) na zdrowie pracownika.The main purpose of this work is to present a computer control system for ventilation and dust extraction system in a grain mill. Owing to the use of this system it is possible to increase the health protection level for employees by securing them against conditions hazardous for their health. One of the agents threatening employee's health in a mill is grain and flour dust. The work presents the ideas of a complex system controlling the dustiness level in a grain mill. Using this integrated system allows to reduce the impact of this noxious agent (grain and flour dust) on employee's health

The use of labview environment for the building of the grain Dust control system in grain mill

The work environment in a grain mill is associated with the occurrence of many hazardous and troublesome factors at this work. However, the most important hazardous factor occurring in the work environment in grain mills is grain and fl our dust. The aspiration and filtration systems applied in mills frequently do not provide proper protection for workers. The objective of the study was to present the assumptions of a complex system controlling the level of dustiness in a grain mill. LabView environment has been used for the building of such system. The acquisition of parameters was carried out basing upon the information and signals received from the sensors supporting the measuring cards. The actual as well as archived parameters occurring in individual rooms can be displayed on the computer screen via the built-in interface

Increasing the Ergonomics at the Workstations of CCTV Operators

The work of an operator of the Closed Circuit TeleVision (CCTV) system is associated with the observation of an image recorded by a camera on the screens of monitors, management of work of devices available within the system of visual monitoring (camera turntables, recorders, control panels), and making decisions concerning the initiation of the provided neutralizing proceedings in the case of detection of abnormal situations and emergency situations for people or property. The presented study focuses on demonstrating the available technical means supporting the work of an operator of a CCTV system. These means, when appropriately used, enable an improvement of ergonomics at the workplace of an operator and, consequently, result in an increased comfort of an operator’s work and greater effectiveness of the surveillance system management process. Possibilities are presented related with the use of techniques for the processing and analysis of images in order to automatically detect abnormal situations and, therefore, support the process of decision-making by the system operator and create the workplaces of virtual operators managing the work of the CCTV system, characterized by parameters which are individualized and adjusted to a given object. The described technical means in the form of image processing techniques and virtual control systems allow the reduction of hazards detection time, increase the possibilities related with the steering and management of the work of devices within the system and thus improve the effectiveness of the processes of hazards detection and neutralization

Dustiness level in selected grain processing industry plants in Lubelskie voivodeship

Celem realizowanego tematu było przeprowadzenie badań zapylenia na stanowiskach pracy w zakładach przemysłu zbożowego. Badania dozymetryczne prowadzone były na stanowiskach pracy typowych dla danego zakładu pracy, gdzie podczas wykonywania czynności roboczych występuje potencjalne narażenie na występowanie pyłu. Wyniki pomiarów wykazały wysoki stopień zapylenia. Na stanowisku pakowacza oraz operatora elewatora we wszystkich badanych młynach przemysłowych zostały przekroczone wartości NDS (Najwyższego dopuszczalnego stężenia) dla pyłu całkowitego przy nie przekroczeniu wartości NDS dla pyłu respirabilnego.The purpose of the research was to test dustiness at workplaces in grain processing industry plants. Dosimetric tests have been carried out at work-stands typical for a given plant, where potential exposure to dust exists during the execution of work. Measurement results have proven a high dustiness level. In all examined industrial mills at work-stands of packer and elevator operator, the Maximum Exposure Level values for total dust were exceeded. At the same time, the MEL value was not exceeded for respirable dust

Analysis of the market of LPG as an alternative vehicle fuel in Poland in 2005–2016

The Liquified Petroleum Gas (LPG) is currently the only widespread and available alternative fuel used in Poland for motor vehicles equipped with spark-ignition engines. Until the end of the 1980s, the monopoly on the fuel market had belonged to petrol and diesel oils. In the 1990s this monopoly was broken by LPG. The important impulse causing increase of concern with using alternative driving fuels by drivers has always been economy issues. The Liquified Petroleum Gas has been presented as an eco-friendly fuel, and with an attractive price it has also gained the title of an economical one. Over the last three decades, The Liquified Petroleum Gas has become an important player in the fuel market. The article presents current trends observed in the fuel market (LPG fuel and gasoline U95) used to power motor vehicles equipped with spark ignition engines, and analysis of the price volatility of these fuels in the period 2005÷2016

Modelling of the system applied to assess working conditions for control room operators

Kompleksowa ocena warunków pracy jest źródłem informacji niezbędnych do zapewnienia bezpieczeństwa pracy. Proces oceny warunków pracy oraz efektywne gromadzenie i zarządzanie informacjami niezbędnymi do jego przeprowadzenia i dokumentowania wymaga wspomagania komputerowego. W pracy przedstawiono zagadnienia dotyczące tworzenia modelu systemu komputerowego wspomagającego ocenę warunków pracy na stanowisku operatora sterowni.Complex assessment of working conditions is a source of information necessary to ensure safety of work. The process involving assessment of working conditions and effective collection and management of information needed to carry it out and to document it requires computer support. The paper presents issues concerning building of a model for computer system supporting the process of assessment of working conditions at control room operator's workstation

Problems of searching for failures and interpretation of error codes (DTCs) in modern vehicles

Volkswagen model launched in 1968 is deemed as the first motor vehicle provided with on-board diagnostics functions. However, the introduction of systems for the monitoring of vehicle sub-assemblies contributing to emission levels in all vehicles was enforced by environmental protection requirements. The California Air Resources Board (CARB) introduced the necessity to use the basic functions of on-board diagnostics (OBD) in all the motor vehicles sold in California since 1991. The article presents the results of practical tests in the scope of on-board diagnostics for “premium” class vehicle. The tests were carried out by means of 4 diagnostic interfaces. Data volume obtained from motor vehicles varied depending on the applied device, although OBD II standards should be introduced in an identical manner by the manufacturers of motor vehicles and diagnostic devices