High-frequency interference filter circuit
A high-frequency interference and circuit technology, which is applied in the field of pulse signal processing circuits, can solve problems such as the influence of narrow pulse filtering
Active Publication Date: 2021-09-14
深圳市三洲电子有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the algorithm is processed after sampling by the MCU, the MCU itself is easily affected by various interferences, which affects the filtering of narrow pulses
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
[0024] The present invention will be further described below in conjunction with accompanying drawing.
[0025] Such as figure 1 An embodiment of a high-frequency interference filtering circuit is shown. In the embodiment, the forward current driver, the forward anti-jamming capacitor, and the forward anti-jamming Schmidt circuit are respectively the current driver U11, the capacitor C11, and the Schmidt circuit F11, forming a forward charging and discharging circuit; the reverse current driver , the reverse anti-jamming capacitor, and the reverse anti-jamming Schmidt circuit are respectively the current driver U21, the capacitor C21, and the Schmidt circuit F21, forming a reverse charging and discharging circuit. One end of the capacitor C11 is connected to the input end of the Schmitt circuit F11, and the other end is connected to the common ground; one end of the capacitor C21 is connected to the input end of the Schmitt circuit F21, and the other end is connected to the c...
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
A high-frequency interference filtering circuit includes a forward charging and discharging circuit, a reverse charging and discharging circuit, and a data selector. The high-frequency interference filtering circuit controls one of the forward charge and discharge circuit and the reverse charge and discharge circuit as the output pulse through the data selector to control the output pulse. The high-frequency interference filter circuit can automatically filter the positive narrow pulse during the negative wide pulse and the negative narrow pulse interference during the positive wide pulse, especially the continuous narrow pulse interference signal can be filtered; the maximum width of the positive narrow pulse that needs to be filtered can be changed by changing The outflow driving current of the positive current driver or the size of the forward anti-jamming capacitor can be adjusted; the maximum width of the negative narrow pulse that needs to be filtered can be adjusted by changing the outflow driving current of the reverse current driver or the size of the reverse anti-jamming capacitor . The high-frequency interference filtering circuit can be applied to all occasions in digital signal circuits where narrow pulse interference signals need to be filtered.
Description
technical field [0001] The invention relates to a pulse signal processing circuit, in particular to a high-frequency interference filtering circuit. Background technique [0002] In digital signal circuits, it is often necessary to filter the positive narrow pulse and negative narrow pulse in the pulse signal, for example, filter a single narrow interference pulse, filter the shaking pulse of the mechanical tri-state gate, and so on. At present, the commonly used method is to use a filter circuit for filtering, or use an MCU to sample and perform algorithm processing. Filtering circuit is used to filter. When the frequency of the narrow pulse to be filtered is high, the filter circuit has a DC memory effect, and the previous narrow pulse will affect the filtering of the latter narrow pulse. When the algorithm is processed after sampling by the MCU, the MCU itself is easily affected by various interferences, which will affect the filtering of narrow pulses. Contents of the...
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): H03K5/1252
CPCH03K5/1252
Inventor 凌云陈刚曾红兵
Owner 深圳市三洲电子有限公司