(论文 页数:11 字数:2404)Abstract: According to our textbook, we know that many electronics applications presented in our daily life would not be possible without sensors. Sensors are required in industrial process, in agriculture, in chemistry, in medical products, in aircrafts and so on. Meanwhile, the needs of aeronautical about sensors are growing on and on. Sensors play the very important role in the aviation industrial.

Keywords: sensor, aircraft

目录

1. General concepts about sensors
2. The aviation applications of sensors
3. Airworthiness of Sensors

1. General concepts about sensors
As we all know, the most common sensors in aircraft are Pressure sensors, Temperature sensors, Speed Sensors. Without them, the aircraft barely could take off! When the aircraft landing, the sensors also are very indispensable such as the main landing gear safety sensors, nose landing gear safety sensor and so on.
Sensors are so important that we cannot without, so do these general concepts. Just when we know these concepts well, we can take good use of sensors. Sensors are the basis of measurement systems.
A sensor includes input transducers, output transducers and actuator. Them are devised by their way of convert the electrical or nonelectrical.
In a measurement system the sensor is chosen to gather information about the measured quantity and to convert it to an electric signal. No doubt that there will be interfering, modifying inputs. And the negative feedback is a common method to reduce the effect of modifying inputs, and it is the method used in null measurement systems. Meanwhile filtering is the common way of interference reduction. Filters are very effective when frequency spectra of signals and interference do not overlap. Another common technique for interfering and modifying inputs is the use of opposing inputs and digital calculation.