| 摘要 |
A microstrain sensor measures deformation, and indirectly, other parameters such as acceleration, temperature, pressure, and force. The microstrain sensor utilizes input and output conductors connected to a single piece of film through which current travels to indicate resistance. The film provides superior resistance to external effects, such as temperature gradients, that decrease the accuracy of the sensor's readings. Such sensors may be used in situations in which opposing stresses are present, such as dually constrained members, by disposing separate or unitary film sections on opposite sides of a zero stress point, such as a central plane of a fixed-guided beam. Such sensors may be utilized in different applications, including automotive safety systems. The automotive safety system may utilize sensors to measure weight-in-seat, frame deformation, acceleration, seat belt tension, and other parameters to properly control safety elements of the vehicle such as seat belts and airbag systems. |
