Inspec keywords: gas sensors; industrial accidents; wireless sensor networks; health hazards; personnel; biomedical measurement

Other keywords: pulse detector; environmental pollution monitoring; heart beats; microcontroller; toxic chemicals; health center; quick response time; sewer labourer welfare; alert warning message; first aid; fully automated; toxic gases; hazardous gases; wireless sensing system; internet of things

Subjects: Health Physics; Chemical sensors; Chemical variables measurement; Health and safety aspects; Biomedical measurement and imaging; Wireless sensor networks