Design and Implementation of a Low-Cost Spirometer for Predicting Respiratory Diseases

 Spirometry is an essential diagnostic tool for assessing lung function and detecting respiratory diseases. However, commercially available spirometers are often prohibitively expensive, with prices ranging from INR 15,000 to INR 70,000, depending on the brand and features. Hospital-grade spirometry machines, which are usually the most advanced and PC-based, cost between INR 50,000 to INR 100,000 or even higher. Additionally, the cost of a single spirometry test can range from INR 1,000 to INR 2,000. Despite their high cost, these spirometers do not always provide accurate results, comprehensive data, or precise disease indications.

To address these limitations, we have developed a low-cost spirometer with a total production cost of only INR 800. This device is capable of detecting and predicting a total of 26 diseases related to the lungs and heart with high accuracy. In this paper, we will discuss the materials, methodology, techniques, design, data acquisition, and report generation processes involved in the development of this spirometer. Our aim is to provide an affordable yet reliable alternative to existing spirometry solutions, making respiratory health monitoring accessible to a broader population.