Finger griping type pulse oximeter with automatic multidirectional display interface switching function

The utility model discloses a finger griping type pulse oximeter with an automatic multidirectional display interface switching function, which consists of a singlechip, a red light/infrared transmission circuit, a photosensor, a signal processing circuit, an optical direction senor, a key, a buzzer and a display screen, wherein the signal processing circuit consists of a boosting and amplifying circuit, a filter circuit and an analog/digital (A/D) switching circuit. Compared with the existing product, the finger griping type pulse oximeter with the automatic multidirectional display interface switching function has relatively simple components under the condition of realizing the same function, all the components are homemade, accordingly, the purchase cost is greatly reduced; and the optical direction senor is used, so the risk of polluting the environment does not exist, and the use safety is ensured.