Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Implementation method of high-temperature quartz flexible accelerometer servo circuit

An accelerometer and servo circuit technology, which is applied in the direction of using inertial force for acceleration measurement, acceleration measurement, speed/acceleration/impact measurement, etc. The effect of improving power driving capability, low cost and simple operation

Pending Publication Date: 2020-04-17
QINGDAO AEROSPACE SEMICON RES INST
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems of low reliability and high failure rate of accelerometer servo circuit in high temperature environment; solves the problems of no integrated digital output circuit in the market and large volume.

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
  • Implementation method of high-temperature quartz flexible accelerometer servo circuit
  • Implementation method of high-temperature quartz flexible accelerometer servo circuit
  • Implementation method of high-temperature quartz flexible accelerometer servo circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Such as Figure 1-4 , the present invention includes a closed-loop servo amplifier and meter assembly;

[0050] The meter head assembly includes torquer assembly and differential capacitor assembly;

[0051] The torque device assembly includes a torque sensor L1;

[0052] The servo amplifier includes a pre-transformation circuit U1, a dual-channel voltage regulator circuit for supplying power to the pre-transformation circuit U1, a feedback resistance-capacitance network, and a transconductance compensation amplifier U4;

[0053] The pre-conversion circuit U1 includes an operational amplifier, a current integrator, a differential capacitance detector for detecting capacitance differences, and a triangular wave generator; the triangular wave generator includes an output circuit, a constant current source, and a bias circuit;

[0054] The triangular wave generator outputs the triangular wave signal through the capacitance detector, and integrates through the current int...

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 relates to an implementation method of a high-temperature quartz flexible accelerometer servo circuit. The method comprises the steps that 1, an integrated circuit chip of a front conversion circuit U1 and a transconductance compensation amplifier U4 is back-silvered in a welding mode, to be more specific, firstly, the temperature of a heating table of an eutectic welding machine israised to 450 DEG C; then, a metal substrate with a silver-plated surface is placed on the heated heating table of the eutectic welding machine, and the silver plating thickness of the metal substrateis 2-5 microns; secondly, a chip needing back metallization and a tray are placed on a material table of the eutectic welding machine; thirdly, the heating table of the eutectic welding machine is moved to enable the chip tray to appear in the field of view of a microscope; an operating handle is moved to enable clamping tweezers to be located over the chip, and moved downwards to enable a notchof a right piece of the clamping tweezers to be pressed on the edge of the chip, a handle button is pressed to enable the tweezers to clamp the chip, the tweezers clamp the chip at the 1 / 2-2 / 3 position of the thickness of the chip, and the operating handle is moved to lift the clamping tweezers; and the servo circuit is reasonable in design, compact in structure and convenient to use.

Description

technical field [0001] The invention relates to a method for realizing a high-temperature quartz flexible accelerometer servo circuit. The invention belongs to the technical field of sensor manufacturing, specifically an accelerometer servo circuit with integrated A / D conversion, miniaturization, high-temperature 185°C environmental requirements, and high reliability. . Background technique [0002] Quartz flexible accelerometer is one of the key devices in the inertial navigation system, and it is a high-precision sensor for measuring linear acceleration. Its importance has been more and more understood by people. The inertial navigation system with the accelerometer as the core is not interfered by radio waves, nor affected by climate and magnetic variation, and has the advantages of simple structure, small size, high precision and sensitivity, good stability, low power consumption, Low cost and other characteristics, not only can be widely used in aerospace, aviation, in...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/08H02H7/12
CPCG01P15/0802H02H7/1213
Inventor 孙华涛王辉刘本勇黄轩玮
Owner QINGDAO AEROSPACE SEMICON RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com