Development of ergo-refined operator’s workplace and biophysically actual cost-benefit analysis of riding type self-propelled machines with special reference for female operators

Article type: Research Article

Authors: Singh, Gajendra^{a; *} | Tewari, Virendra Kumar^a | Dubey, Arpan^a | Potdar, Rahul Rajaram^b

Affiliations: [a] Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur, India | [b] ICAR-Central Institute of Agricultural Engineering, Bhopal, India

Correspondence: [*] Address for correspondence: Gajendra Singh, Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur, India. E-mails: [email protected] and [email protected].

Abstract: BACKGROUND:Female agricultural workers contribute to 37% of the total agricultural workforce in India, however, most self-propelled machinery is designed for male agricultural workers. OBJECTIVE:The primary objective was to determine the impact of the ergo-refined operator’s workplace on various aspects of operator performance and comfort, including actuating force, posture, and physiological parameters. METHODS:Experiments were carried out in real field conditions using a full factorial randomized design. Twelve female operators participated in the study, and measurements were taken for control lever actuating force, operator posture, heart rate, and other relevant parameters. RESULTS:The ergo-refined operator’s workplace intervention resulted in significant reductions in actuating force for various control levers, angles of joints, working heart rate (WHR), oxygen consumption rate (OCR), muscle load, and whole-body vibration (WBV) acceleration. These reductions were observed under different operating conditions. CONCLUSION:The findings suggest that the ergo-refined operator’s workplace is effective in enhancing operator comfort and reducing physical strain during the operation of riding type self-propelled machines. It contributes to improved safety, comfort, and operational efficiency for operators working in field conditions. ANOVA and MANOVA analyses confirmed the positive impact of operating conditions and engine speed on the measured parameters when using the ergo-refined operator’s workplace.

Keywords: Workplace, biophysical cost assessment, muscle fatigue, working heart rate, actuating force and whole body vibration

DOI: 10.3233/WOR-220199

Journal: Work, vol. 78, no. 2, pp. 355-368, 2024