A composite vacuum gauge circuit system based on module reuse

By using modular reuse design and a microcontroller-controlled circuit system, the shared resources and intelligent early warning of the two sensors were realized, solving the redundancy and size problems of the composite vacuum gauge system and improving the reliability and continuity of measurement.

CN121430910BActive Publication Date: 2026-05-08HUNAN UNIV
3 Cites 0 Cited by

Patent Information

Application Number
CN202512034191.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-31
Publication Date
2026-05-08
Estimated Expiration
2045-12-31

AI Technical Summary

Technical Problem

Existing composite vacuum gauge systems have complex and bulky circuit systems due to the different driving principles and operating modes of the two sensors, making them difficult to apply in compact scenarios. They also lack effective monitoring of the filament's condition, posing a risk of damage.

Method used

The design employs a modular reuse approach, making the filament heating circuit and voltage measurement circuit switchable and shareable. Through a microcontroller-controlled circuit system, the two sensors can share resources and be dynamically configured, enabling real-time monitoring of filament resistance changes for intelligent early warning.

Benefits of technology

The system structure was simplified, the equipment size was reduced, the reliability and continuity of vacuum measurement were improved, and intelligent early warning of filament status was achieved, thus avoiding equipment damage.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a kind of composite vacuum gauge circuit systems based on module multiplexing, the circuit system is configured as drivable vacuum sensor, vacuum sensor is Pirani sensor and hot cathode ionization sensor, circuit system includes: power supply circuit, filament heating circuit, adjustable high voltage circuit, ion current measurement circuit, voltage measurement circuit, analog-digital conversion circuit, wherein, single-chip microcomputer is configured as: starting Pirani sensor, control adjustable high voltage circuit and ion current measurement circuit are not enabled;Current vacuum degree is obtained based on Pirani sensor, if vacuum degree is greater than or equal to preset threshold, then continue to use Pirani sensor to measure vacuum degree;If vacuum degree is less than preset threshold, then enable adjustable high voltage circuit and ion current measurement circuit, and use hot cathode ionization sensor to measure vacuum degree.By the switchable circuit system controlled by single-chip microcomputer, the driving and measurement of two kinds of principle different vacuum sensors by a set of circuit system are realized.
Need to check novelty before this filing date? Find Prior Art