A piezoelectric detection circuit, its detection method and display device
A piezoelectric detection and circuit technology, applied in the direction of measuring devices, circuits, piezoelectric/electrostrictive transducer microphones, etc., can solve the problems of cost reduction and power consumption, complex and unfavorable devices, etc.
Inactive Publication Date: 2020-05-01
BOE TECH GRP CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The integration of multiple sensors will make the device more complex, which is not conducive to miniaturization and integration in display devices, and is not conducive to reducing cost and power consumption.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0048] The specific implementation manners of the piezoelectric detection circuit, the detection method and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0049] The shapes and sizes of the components in the drawings do not reflect the real scale, but are only intended to schematically illustrate the content of the present invention.
[0050] An embodiment of the present invention provides a piezoelectric detection circuit, such as figure 1As shown, it includes: a piezoelectric device 100, a comparator 200 electrically connected to the piezoelectric device 100, a mixer 300 electrically connected to the comparator 200, and a signal processor 400 electrically connected to the mixer 300 and the comparator 200 ;in,
[0051] The piezoelectric device 100 is used to convert the pressure signal into a corresponding DC signal, or convert the sound wave signal into a corresponding ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a piezoelectric detection circuit, its detection method and a display device. A comparator and a frequency mixer are added between the piezoelectric device and the signal processor in the existing piezoelectric detection circuit. It can be used as a pressure sensor, and the acoustic-electric conversion of the microphone can also be regarded as a higher-precision pressure sensor. Therefore, the piezoelectric device converts the pressure signal into a corresponding DC signal under pressure. When the microphone function is realized, the piezoelectric device The device converts the acoustic wave signal into a corresponding AC signal; when the comparator determines that the piezoelectric device outputs a DC signal, it directly outputs the DC signal to the signal processor for pressure identification. When the comparator determines that the piezoelectric device outputs an AC signal, The AC signal is firstly mixed by a mixer, and then the signal processor is used for sound recognition. In this way, the functions of pressure detection and microphone can be realized by using one piezoelectric device, which can reduce cost and power consumption.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a piezoelectric detection circuit, a detection method thereof and a display device. Background technique [0002] Most of the current sensors can only realize a single function, for example, they can only realize the piezoelectric detection function, or they can only realize the acoustic wave detection function. If sensors are required to realize multi-functional applications at the same time, at present, it is basically through the integration of multiple sensors to coordinate with each other to achieve more refined or complex functions. However, the integration of various sensors will make the device more complicated, which is not conducive to miniaturization and integration in the display device, and is also not conducive to reducing cost and power consumption. Contents of the invention [0003] In view of this, an embodiment of the present invention provides a piezoelectr...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/16H04R17/02G02F1/1333H10N30/30H10N30/80H10N30/857H10N30/87
CPCG02F1/13338G06F3/0412G06F3/0414G06F3/167H04R17/02H10K59/873G01L1/167H04R2201/003H04R2499/15G06F3/0416G02F1/133394H10N30/878H10N30/802H10N30/302H10N30/857H10K59/40G01L1/16H10K50/844H10K59/00
Inventor 赵利军王海生刘英明郭玉珍贾亚楠李昌峰顾品超秦云科
Owner BOE TECH GRP CO LTD