從Mars鉆井到機器人裝配機器零件，力傳感器解決方案繼續增長

　　力和加速度傳感器已經存在了很長一段時間，但他們仍然表現出有趣的技術進步，旨在滿足新的和不斷變化的用途，在軍事，工業，消費電子，移動和醫療應用。

　　早期的力傳感器是液壓式的，氣缸、隔膜和風箱將壓力轉換成壓力信號，在超大的壓力表上讀取。它們堅固耐用，可靠，可以在惡劣的環境中使用，數據可以同時解析為幾個點。

　　力傳感器系統是具有氣動輸出很容易地集成到過程控制采用通用3-15 psi的輸出。此后不久，應變計傳感器改變了測力的方式。傳感元件是基于電阻和伸長率，扭曲，或扭曲的導電材料從休息的位置。當導體連接到銷、軸和板時，他們創造了高度精確的、可重復的、堅固的力傳感器系統，稱為稱重傳感器。目前，它們被用于稱重箱、秤和醫用生命體征測量。。

　　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.