Abstract:
The project is intended to address the spread of diseases through contact in hospitals and the surrounding by providing a medium of no contact while operating hospital beds. The report gives all the procedures, methodology and the scope of the project.We employed three different sensors which included one ultrasonic sensor and two infrared sensors. The ultrasonic sensor helped in distance determination and obstacle avoidance and the infrared sensors helped to detect motion and aided in the following of the operator. The bed was designed with four wheels each fitted with motors that were driven by motor drivers. We used two motor drivers each driving two motors. These motor drivers helped in speed control as well as protecting other system components from damage during operation of the bed. The project was simulated in proteus simulation software and the circuit diagram is shown in the next chapters. Generally, all the objectives of this project were accomplished. The bed is able to follow the operator and dodge obstacles and hence it operates without contact. The operator should be in the range of 4cm to 100cm from the bed. The bed is operated on a battery backup with a well-designed charging system as discussed in chapter three of this document. The bed adjusts its speed automatically according to the speed of the operator.
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