The invention discloses a capacitive push-pull force sensor, a capacitive sensing circuit and a cart with the sensor. The capacitive push-pull force sensor comprises an elastic insulating sheet, two conductive sheets and a capacitance sensing circuit, the two conductive sheets are oppositely arranged on the two side faces of the elastic insulating sheet, one end of the capacitance sensing circuitis connected with one conductive sheet, and the other end of the capacitance sensing circuit is connected with the other conductive sheet. Under the action of an external force, the elastic insulatingsheet deforms, so that the capacitance value of a capacitor formed by the two conductive sheets is changed; and after the external force is removed, the elastic insulating sheet returns to the initial state, and the capacitance sensing circuit detects the capacitance value change of the capacitor by detecting the oscillation frequency. The cart assistance is intelligently adjusted by directly detecting the push-pull force of the hand on the push handle of the cart, and the accuracy of assistance adjustment is improved.
本发明公开了一种电容式推拉力传感器、电容感测电路及具有传感器的推车,电容式推拉力传感器包括弹性绝缘片、两个导电片和电容感测电路,所述两个导电片相对设置在所述弹性绝缘片的两侧面上,所述电容感测电路的一端与一个导电片连接,另一端与另一个导电片连接;在外力作用下,所述弹性绝缘片发生形变,使所述两个导电片形成的电容的电容值发生变化;在外力撤销后,所述弹性绝缘片恢复到初始状态,所述电容感测电路通过检测振荡频率来检测所述电容的电容值变化。本发明通过直接检测人手对推车推把的推拉力来智能调节推车助力,提高助力调节的精确性。
Capacitive push-pull force sensor, capacitive sensing circuit and cart with sensor
电容式推拉力传感器、电容感测电路及具有传感器的推车
2020-04-17
Patent
Electronic Resource
Chinese
IPC: | G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS |
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