Pressure detecting capacitance pen
A capacitive pen and pressure technology, applied in the direction of electrical digital data processing, instrumentation, data processing input/output process, etc., can solve the problem of unclear signal from the stylus or interference signal, interference, etc., and achieve increased sensitivity , low cost, enhanced anti-interference effect
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[0012] The present invention will be further described below in conjunction with the drawings and embodiments.
[0013] Please refer to figure 1 As shown, in the capacitive pen 1 using pressure detection according to the present invention, the capacitive pen 1 includes a pen body 10 and a pen tip 11 at the front end of the pen body. The pen tip 11 and the pen body 10 are fixed by an elastic element 12, The pen body 10 is provided with a detection circuit board 13, and the pen head is provided with a driving circuit board 14. The detection circuit board 13 is provided with a coil L1 and a comparator C connected to it. The capacitance detection chip D is connected to the comparator C and is used to identify and analyze the signal output by the comparator C. The boost circuit B is connected to the capacitance detection chip D, and is used to boost the parsed signal and finally output it to the pen tip 11, that is, the detection data of the capacitance detection chip D in the pen b...
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