Intermediate frequency signal amplitude measurement method and device based on pulse width counting

A technology of intermediate frequency signals and measurement methods, applied in the field of electronic devices and electronic equipment, can solve the problems of high performance requirements, impossibility, and low suppression of ADCs and MCUs, and achieve the effect of huge commercial value and low cost

Pending Publication Date: 2022-06-28
深圳芯盛思技术有限公司
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this approach is that the first order RC low pass has very little rejection at 50Hz
The problem is that a 10GHz radar sensor corresponds to a Doppler frequency of 67Hz on a moving object at 1m/s, and it is impossible to use a 40Hz low-pass filter
24GHz or 77Hz radar is too expensive for smart lighting
If the radar module uses an analog-to-digital converter (ADC) to sample and then

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intermediate frequency signal amplitude measurement method and device based on pulse width counting
  • Intermediate frequency signal amplitude measurement method and device based on pulse width counting
  • Intermediate frequency signal amplitude measurement method and device based on pulse width counting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031]The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art. The following examples are merely examples to clearly illustrate the present invention, and are not intended to limit the embodiments of the present invention.

[0032] In actual operation, changes and changes can be made according to requirements on the basis of the following description, but the obvious changes or changes derived from the spirit of the present invention are still within the protection scope of the present invention. ...

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

No PUM Login to view more

Abstract

The invention provides an intermediate frequency signal amplitude measurement method and device based on pulse width counting, which can be applied to any motion sensing radar sensor chip and module. According to the Doppler velocity measurement radar sensor chip, a pulse counting method with a fixed time period is used for measuring the output pulse width of a comparator, the method can be used for judging effective dynamic radar triggering, power frequency interference and other interference are prevented, and the duty ratio of a signal is measured through the method. The method can detect the amplitude of a non-continuously existing electric signal without an analog-to-digital converter, can eliminate the interference of continuous waves with constant amplitude, and is theoretically suitable for any analog quantity measurement equipment which needs to measure the signal amplitude.

Description

technical field [0001] The present application relates to the technical field of electronic equipment and electronic devices, and in particular to an integrated circuit applied in the field of radar sensors, which is suitable for any motion-sensing radar sensor chips and modules, the most typical being the application of motion-sensing detection radar chips in the field of intelligent lighting . The amplitude of non-persistent electrical signals can be detected without the need for an analog-to-digital converter (ADC), and constant-amplitude continuous wave interference can be excluded. Background technique [0002] The method of using voice-activated lights in corridors to save energy and prolong the life of bulbs has long been widely used. Due to the low reliability of voice-activated sensors, they are gradually replaced by infrared sensors. However, the infrared sensor needs to open a window and add a lens (like a fish eye) on the surface of the lamp, which destroys 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
no application Login to view more
IPC IPC(8): G01S7/40G01S13/58
CPCG01S7/4008G01S7/4021G01S13/581
Inventor 章新明
Owner 深圳芯盛思技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap