| 摘要 |
<p>An operating key-free pulse oximeter based on Photoelectric effect is provided. The pulse oximeter comprises an optical frequency converter, a luminous driving circuit, a display, a microprocessor, a voltage stabilizing circuit module, a light coupled device and a power supply. The light coupled device connects with the voltage stabilizing circuit module, the voltage stabilizing circuit module connects with the microprocessor and the optical frequency converter, the microprocessor also connects with the optical frequency converter, the luminous driving circuit and the display. In which, after the distance between the light coupled device and the obstruction reaches a certain distance D, the light coupled device is in on-state or off-state, thus the startup or shutdown operation of the Operating key-free pulse oximeter is implemented. The pulse oximeter is operated without key, and is easy to operate.</p> |
