desde y de forma anual, su Congreso Internacional de Ergonomía. física de las actividades fue aplicado el método RULA considerando los cambios . Posteriormente se utilizó el método RULA, para evaluar las posturas de estudiantes Humantech de Ergonomía Aplicada () y el texto de Eastman Kodak. View Aula 05 – Método from ENGENHARIA at Universidade Potiguar. Ergonomia UNP | Eng. de Produo | Enver Paiva Mtodo RULA Mtodo.

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WRULMSDs: selection of risk assessment methods

Furthermore, to determine if the worker is walking, the position of the hip 0 is measured at regular intervals of time. Therefore, the error rate in coding no inferred positions does not seem to vary with the angle. The skeletal tracking joint information can be adjusted across different frames to minimize jittering and stabilize the joint positions over time.

Theoretical Issues in Ergonomics ScienceLoughborough, v.

Informe Final Ergonomía – Método Rula

The use of low-cost range sensors like Microsoft’s Kinect could be useful in the collection of data at very high frequencies, but it is necessary to check the accuracy and reliability of the data collected. The system identifies the positions of the back, shoulders and legs of the worker and the weight of the load handled. An observer can register a limited number of postural variables reliably Doumes and Dul, ; Genaidy et al.

Occupational environmental medicine 55, — Na etapa seguinte, avalia-se a postura da coluna cervical, do tronco e dos membros inferiores. Sequences of working activities were recorded on video to estimate the predictive validity of the methods.

Applied ergonomics 29, —3. The use of checklists for upper limb risk assessment.

Click Figure to enlarge Figure 1: In the present study we did not analyze sitting positions or automatic load detection. Finally, discarding inferred postures, the ergonokia were: Experimentation is required on an application-by-application basis in order to provide the required level of filtering and smoothing Azimi, The emitter of each sensor projects a speckled pattern of infrared light in the detection area.


This paper examines the potential regonomia of KinectTM range sensor in observational methods for assessing postural loads.

Ergonautas- Lab: Aplicación de Kinect para la evaluación de la ergonomía de puestos de trabajo

This is a significant drawback in cases where the tracked user assumes postures with different orientations with respect to the sensor. A significant relationship between the back postures as defined by OWAS and prevalence in lower back pain has been established by epidemiological analysis A Burdorf et al. A comparison of three observational techniques for assessing postural loads in industry.

BMC medical research methodology 12, Although we tried to keep duration and speed of the movements constant, the total length of the sequences was slightly different, varying between and seconds. For example, in a movement in which the subject lifts an arm, the code of the arm position changes when the elbow reaches the level of the shoulder.

The results obtained by human observers are compared with those obtained by the sensor. The x, y, and z-axes are the axes of the depth sensor Figure 3. The bending of the legs is calculated by measuring the angle formed by the line connecting the hip to the knee and the line connecting the knee to the ankle.

Although the results are promising, some aspects involved in the use of low-cost range sensors should be further studied for their use in real environments. The recorded motion sequences were played back with Kinect Studio, and the data were analyzed with ergonautas-NUI. Work-related neck and upper limb musculoskeletal disorders. Baseline exposure assessment results from a prospective study of upper extremity musculoskeletal disorders. Assessment of physical work load in epidemiologic studies: Instrument-based or direct measurement methods employ sensors attached to the subject for measuring certain variables These methods collect accurate data, but are intervening, require considerable initial investment to purchase the equipment, as well as the resources necessary to cover the costs of maintenance and the employment of highly trained and skilled technical staff to ensure their effective operation David, ; Trask and Mathiassen, On the other hand, the percentage of wrong coded postures among no inferred postures could be different too.


The sequences of movements were recorded using Kinect Studio. A simple method to evaluate the reliability of OWAS observations. In this paper we will analyze if these devices can help evaluators that use observational techniques for ergonomic job assessment.

Ergonomic methods for assessing exposure to risk factors for work-related musculoskeletal disorders. ErgonomicsLoughborough, v. The smoothing process is controlled by four parameters that can be tuned using ergonautas-NUI: The modified skeleton joint position data is displayed in real time number 4 in Figure 4. Based on the body position code OWAS identifies four classes which reflect static load risk degree Mattila and Vilki, Corrective action should be taken immediately. The information about the coordinates x, y and z of the joints of the tracked subject is obtained from the sensor in the form of an array with three columns one for each coordinate and 20 rows.

Click Figure to enlarge Figure 3: Any jitter beyond the scope of this parameter during one time step is clamped erognomia the jitter reduction radius. Kee, Dohyung, Karwowski, Waldemar, The experts independently classified each posture into a risk category.