从Mars钻井到机器人装配机器零件，力传感器解决方案继续增长

　　从Mars钻井到机器人装配机器零件，力传感器解决方案继续增长

　　力和加速度传感器已经存在了很长一段时间，但他们仍然表现出有趣的技术进步，旨在满足新的和不断变化的用途，在军事，工业，消费电子，移动和医疗应用。

　　早期的力传感器是液压式的，气缸、隔膜和风箱将压力转换成压力信号，在超大的压力表上读取。它们坚固耐用，可靠，可以在恶劣的环境中使用，数据可以同时解析为几个点。

　　力传感器系统是具有气动输出很容易地集成到过程控制采用通用3-15 psi的输出。此后不久，应变计传感器改变了测力的方式。传感元件是基于电阻和伸长率，扭曲，或扭曲的导电材料从休息的位置。当导体连接到销、轴和板时，他们创造了高度精确的、可重复的、坚固的力传感器系统，称为称重传感器。目前，它们被用于称重箱、秤和医用生命体征测量。。

　　The most common dynamic force sensor today is the piezoelectric variety， which is a distant cousin to strain-gauge devices used for static force detection. Piezoelectric crystal force transducers are used with a charge amplifier to integrate the electric charges formed on a crystal surface to a given and measurable signal proportional to the force applied.

　　These sensors are unique because they are active sensors that do not require a power supply， and signals are easily generated without causing geometric changes to the force-measurement route. They have a high-frequency response capability that makes them suitable for dynamic measurement， but because of charge leakage from the charge amplifier， also called drift， they cannot perform static measurements accurately. They have small dimensions and can operate well within a wide temperature range， and are typically used to measure oscillation， impact， high-speed tension， compression， and torque.