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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The evaluator selects the correct option less than 10 kg, between 10 and 20 kg or more than 20 kg at the appropriate time. The use of checklists for upper limb risk assessment. This paper examines the potential use of KinectTM range sensor in observational methods for assessing postural loads. Assessment of mechanical exposure in ergonomic epidemiology. If the recording is taken at that moment there is some ambiguity about posture coding.

BMC medical research methodology 12, Corrective action should be taken as soon as possible.

The errors detected were due to incorrect codification of the position of the back in 34 postures 4. The aim is to determine the suitability of the device to collect the information requested by the method, and compare the results with the observations made by human observers using photographs or videos.

For example, in ervonomia movement in which the subject lifts an arm, the code of the arm position changes when the elbow reaches the level of the shoulder. A real-time ergonomic monitoring system using the Microsoft Kinect.

Lower values are slower to correct towards the raw data and appear smoother, while higher values will correct toward the raw data more quickly. Work-related neck and upper limb musculoskeletal disorders. A note on the validity and reliability of ergonomics methods.

Informe Final Ergonomía – Método Rula

Then the results obtained are compared with those obtained by human observers and finally the main conclusions are summarized.

In order to play the sequence of movements ergnoomia in the same way, we showed each posture to the player in a screen. In the present study we did not analyze sitting positions or automatic load detection. The software developed allows the evaluator to decide whether to use the postures in which the position of a joint is inferred for the calculation of risk level.


Applied ergonomics 24, 91—9.

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

In the present work we have used a low-cost range sensor Microsoft’s Kinect for data collection, following which an observational method was used to assess postural load OWAS. They are also easy to use, do not require complex calibration processes and do mteodo affect the work process. After jointly analyzing the postures the experts came to an agreement about the category they fell into.

Trunk rotation is measured by calculating the angle between the line joining the shoulders and that same line projected on the trunk plane. The process begins by calculating three auxiliary planes sagittal, frontal, trunk Figure 5. Washington Department of Labor and Industries, Correcting working postures in industry: The software developed allows the operator to decide whether to use or discard the postures in which the position of a joint has been inferred.

Na etapa seguinte, avalia-se a postura da coluna cervical, do tronco e dos membros inferiores. Upper limb disorders in the workplace. Although Kinect provides a simple merodo to obtain depth maps and depth images at a rate of up to 30 frames per second, data processing is time consuming.

Click Figure to enlarge Figure 5: A more detailed analysis of the incorrectly coded postures reveals that they correspond to postures recorded while the tracked subject was performing a movement that caused a change in the coding of the position of one body member. 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.

Similarly, when the subject stands on a single bent leg the posture is classified as “Standing on both knees bent” in Burdorf, Alex, Derksen, J. Comparison with standard stereophotogrammetry. Musculoskeletal disorders and workplace factors: For the calculation of lateral bending the line connecting the shoulders 4 and 8 is projected on the trunk plane, measuring the angle formed by this line and the line connecting the hips 12 and International Journal of Production Research 46, — The remaining 17 posture classifications that are not present in the sequence are very improbable and unstable, e.


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. New raw data is adjusted to the predicted values of previous captured frames. The frontal plane is calculated as a vertical plane which passes through both hips 12 and The postures adopted by the player of the sequence could be categorized in 55 of the 72 possible classifications of OWAS sitting postures and variable loads are not considered in this work.

Validity of the Microsoft Kinect for assessment of postural control.

The recorded motion sequences were played back with Kinect Studio, and the data were analyzed with ergonautas-NUI. Handbook of human factors and ergonomics methods. This system is able to determine the distance of objects in the environment.

In this way, the system can calculate the percentage of occurrence of each position of back, arms and legs. Therefore, it could be supposed that the differences between inferred postures and real postures are bigger when the angle between the sensor and the sagittal plane of the observed worker increases, and that this causes an increase of the percentage of inferred postures wrong coded.

The results of this work will show that this is an important drawback in using Kinect to assess postures in a real work environment.

The location of a body part is based on the location of the previous known location and the current raw location of this body part.

The methods for assessing exposure to risk factors for work-related musculoskeletal disorders MSDs can be classified according to the degree of accuracy and precision of data collection and to how intervening the measuring technique is for the work done by the worker A. Logistics and Transport 1, 57— International journal of occupational safety and ergonomics: