Measurement and feedback circuit, measurement and feedback button, and measurement and feedback method
A feedback circuit and measurement technology, used in circuits, electrical switches, electrical components, etc., can solve the problem that the circuit cannot be known, the measurement and feedback circuits of piezoelectric materials are not clearly mentioned, and the Type feedback output and other issues, to achieve the effect of reducing production costs and saving space
Active Publication Date: 2017-02-22
DARFON ELECTRONICS (SUZHOU) CO LTD +1
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[0003] However, the prior art does not clearly mention the measurement of the piezoelectric material and the complete control method of the feedback circuit, especially when the piezoelectric material is actuated by the output of the circuit, it will start to continuously generate signals, so that the circuit cannot know when need to stop
In addition, the measurement and feedback circuits in the prior art can only provide a single stage of external force input measurement and vibration feedback output, and cannot provide different intensities or different types of feedback outputs in response to different intensities of external force inputs
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[0033] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.
[0034] A specific embodiment according to the present invention is a measurement and feedback circuit. In this embodiment, the measurement and feedback circuit utilizes the piezoelectric and inverse piezoelectric properties of the piezoelectric material to measure the external force on the piezoelectric material and drives the piezoelectric material to output corresponding vibration feedback.
[0035] First, please refer to figure 1 , figure 1 It is a functional block diagram of a measurement and feedback circuit according to an embodiment of the present invention. Such as figure 1 As shown, the measurement and feedback circuit 1 includes a piezoelectric material PZ, a path switching unit 10 and a control unit 12 . Wherein, the piezoelectric material PZ is coupled...
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The invention provides a measuration and feedback circuit, a measuration and feedback button and a measuration and feedback method. The measuration and feedback circuit, the measuration and feedback button and the measuration and feedback method are used for measuring an external force and outputting a vibration feedback. The measuration and the feedback circuit comprises piezoelectric materials and a control unit; the control unit is in a measuration mode at first and measures that whether the output voltage generated by the transformation of the piezoelectric materials under the action of the external force exceeds a preset voltage value or not, when the output voltage exceeds the preset voltage value, the control unit begins to time the preset measuration period of time and measures the output voltage continuously in the preset measurement period of time, the largest voltage value is obtained according to the change of the output voltage, the control unit outputs a feedback signal according to the largest voltage value, and the feedback signal is imposed on the piezoelectric materials to drive the piezoelectric materials to vibrate to output the vibration feedback. According to the measuration and feedback button, the space for the arrangement of a sensing module in a keyboard can be saved, and the production cost of the sensing module is reduced.
Description
technical field [0001] The present invention is related to piezoelectric materials, in particular to a measurement and feedback circuit, a measurement and feedback button that realizes multi-stage measurement and feedback through piezoelectric properties and inverse piezoelectric properties of piezoelectric materials and measurement and feedback methods. Background technique [0002] In the prior art, a tri-state gate (Tri-state gate) is usually used as a component of a measurement and feedback circuit for switching piezoelectric materials. The circuit is initially in the measurement mode. When the piezoelectric material is deformed by an external force, it will output a voltage. After the circuit measures the output voltage, it will switch to the output mode and output an actuation signal to the piezoelectric material, so that It vibrates. [0003] However, the existing technology does not clearly mention the complete control method of the measurement and feedback circuit...
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IPC IPC(8): G06F3/02H01H13/85
Inventor 陈湘凤吴健民赵张凯陈飞雅王治安高黄晓
Owner DARFON ELECTRONICS (SUZHOU) CO LTD