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A clock self-test circuit based on ad8310 detector

A self-test circuit and detector technology, applied in the field of navigation, can solve the problems of slow response, small coverage, complex clock circuit structure, etc., to achieve the effects of fast response time, enhanced navigation accuracy, and low power consumption

Active Publication Date: 2022-03-04
BEIJING RES INST OF TELEMETRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional clock circuit has complex structure, slow response and small coverage

Method used

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  • A clock self-test circuit based on ad8310 detector
  • A clock self-test circuit based on ad8310 detector
  • A clock self-test circuit based on ad8310 detector

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Embodiment Construction

[0038] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments.

[0039] Such as figure 1 , a clock self-test circuit based on AD8310 detector, including a clock generator, a primary power divider, a secondary power divider, a wave detector, a voltage comparator and a linear voltage regulator;

[0040] The primary power divider receives the main clock signal and outputs two main clock signals;

[0041] The detector receives the first main clock signal, and outputs the detection voltage to the voltage comparator after processing;

[0042] The voltage comparator receives the detection voltage and outputs an enable signal to the linear regulator;

[0043] A linear regulator is used to control the clock supply voltage at its output;

[0044] The clock generator receives the clock power supply voltage, outputs the standby clock signal, and combines with the second main clock signal, sends them t...

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PUM

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Abstract

A clock self-inspection circuit based on an AD8310 wave detector belongs to the technical field of navigation. The invention integrates a primary power divider, a secondary power divider, an AD8310 detector, a voltage comparator, a linear voltage regulator, and a clock generator in one design; realizes the switching function of the main clock signal and the standby clock signal; adopts a The method of using the first-stage power divider and the second-level power divider in series improves the isolation between the main clock signal and the standby clock signal, and avoids the problem that the standby clock signal cannot be turned on due to the wrong interpretation of the voltage comparator when the main clock signal is turned off. The clock self-inspection circuit proposed by the present invention converts the power of the main clock signal into a voltage value by using a logarithmic detector, judges the on-off of the main clock signal, and passes the voltage comparator to realize the control of the enable signal of the linear voltage regulator , can accurately self-test the main clock signal. The invention has high reliability, light weight, low power consumption and strong practical value.

Description

technical field [0001] The invention relates to a clock self-inspection circuit based on an AD8310 wave detector, belonging to the technical field of navigation. Background technique [0002] Clock circuits have very important practical application value, such as for communication, navigation and positioning and many application technology fields. With the rapid development of the Internet and synchronization technology, people have put forward higher requirements for the accuracy and stability of the communication system clock, and the ultra-high precision clock can be used to improve the synchronization accuracy of the satellite positioning system. The navigation and positioning system can provide navigation and timing services for the majority of users, and the clock source is designed under this background. Some cutting-edge disciplines, such as aerospace, navigation and positioning, telecommunication and transportation, etc. have increasing requirements for time and fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/25G01S19/20H03L7/26H03L7/093H03L7/097
CPCG01S19/256G01S19/20H03L7/26H03L7/093H03L7/097
Inventor 肖慧耿鹏飞张金榜陈伟波张玉静孟祥
Owner BEIJING RES INST OF TELEMETRY
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