Array pressure sensing device and pressure identification method thereof
A technology of a sensing device and an identification method, which is applied in the directions of measuring devices, measuring forces, instruments, etc., can solve the problems that the resistive touch sensing device cannot perform multi-line scanning driving and high gray-scale pressure identification, and the coding operation is complicated and difficult. Unable to show the pressure distribution of resistive touch panel and other problems, to achieve the effect of reducing the time of identification and calculation, improving the ability of high-gray-scale identification, high-sensitivity touch sensing, and simple linear mathematical operation
Active Publication Date: 2012-04-11
IND TECH RES INST
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However, the aforementioned method can only locate the position of the pressure point on the sensing device, and it is still unable to accurately express the pressure value of the resistive touch panel through high grayscale numbers.
In order to further obtain the pressure value distribution corresponding to precision and low error, the resolution of the analog-to-digital converter of the microcontroller needs to be increased, and at the same time, the back-end coding operation will be more complicated and difficult, so that the resistive touch sensing device cannot be extended to Large-area, multi-line scanning drive and high grayscale pressure recognition cannot effectively improve the high sensitivity of resistive touch devices
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[0067] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, it will be described in detail below with reference to the accompanying drawings and examples, but the following drawings and examples are only for auxiliary illustrations, and the present invention is not limited to the accompanying drawings and examples.
[0068] figure 2 It is a schematic diagram of an array pressure sensing device according to an embodiment of the present invention, and for simplicity and clarity, figure 2 The concept of how to multi-touch and quantize pressure in the present invention is expressed in the form of a circuit diagram, and is first described in a three-line structure. Please refer to figure 2 , the array pressure sensing device 200 of the present invention includes a plurality of first axes 210 (210a, 210b, 210c), a plurality of second axes 220 (220a, 220b), a plurality of piezoresistive units 230, a third axis 240,...
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The invention provides an array pressure sensing device, which is suitable for multi-point touch sensing and pressure quantization identification. The array pressure sensing device comprises a plurality of first axes, a plurality of second axes, a plurality of piezoresistive units, a third axis, a plurality of standard resistors and a control unit, wherein the second axes are in staggered arrangement with the first axes, and one piezoresistive unit is arranged between staggered positions of each first axis and each second axis; and the third axis is in staggered arrangement with the first axes, and one standard resistor is arranged between staggered positions of each first axis and the third axis. The invention also provides a pressure identification method realized by the array pressure sensing device. The pressure identification method is realized by a scanning driving flow of the control unit, and a pressure quantization gray scale identification method for a linear piezoresistive system is provided.
Description
technical field [0001] The present invention relates to a pressure sensing device and a pressure identification method, and in particular to an array pressure sensing device and a pressure identification method. Background technique [0002] With the development of science and technology, pressure sensing devices have been gradually developed and applied to public life. For example, Tekscan has applied gray-scale pressure sensing to home care identification and pressure distribution sensing of chair cushions. Research on tactile quantification technology for intelligent artificial bionic electronic skin has been gradually proposed, and resistive touch panel technology has gradually been commercialized. The application in consumer electronics mainly takes the multi-touch (Multi Touch) function launched by Apple and the pressure-sensing function of Wii Fit launched by Nintendo as international technical indicators. Therefore, large-area multi-touch, array, and three-dimension...
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IPC IPC(8): G01L1/20
Inventor 叶绍兴沈煜棠
Owner IND TECH RES INST