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

Voltage compensation method based on medical vacuum negative pressure machine

A technology of vacuum negative pressure and voltage compensation, applied in the field of medical equipment, can solve the problems of weak signal, temperature effect deviation, output signal error, etc., to reduce labor costs, reduce time costs, and enhance consistency.

Active Publication Date: 2021-10-22
SUZHONG PHARMA GRP MEDICAL EQUIP CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common MEMS piezoresistive pressure sensors are mostly analog voltage output, that is, analog sensors. This analog voltage output has the following three problems: (1) It is susceptible to electromagnetic interference, and the error of the output signal becomes larger as the cable grows. Self-calibration is required; (2) The analog output range is 6-12mV, the signal is weak, and an additional amplifier circuit is required, but the amplifier circuit will increase the noise signal; (3) There will be temperature effect deviation due to ambient temperature and humidity, and the standard voltage needs to be adjusted value

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
  • Voltage compensation method based on medical vacuum negative pressure machine
  • Voltage compensation method based on medical vacuum negative pressure machine
  • Voltage compensation method based on medical vacuum negative pressure machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be further described with reference to the accompanying drawings and embodiments. When describing the embodiments, in order to avoid obscuring the objects of the embodiments, detailed descriptions related to known functions or structures will be omitted. Also, since the terms used herein are defined in consideration of their functions in the embodiments, they may be changed according to user's, operator's intention or practice. Therefore, definitions need to be given in terms of details of the overall inventive concept.

[0043] Such as figure 2 As shown, the present invention defines variables through software coding, including the first collection of air pressure sign X 1 , standard voltage value V 0 , current voltage value V 1 , voltage difference △ V, voltage difference addition and subtraction sign X 2 .

[0044] First, set the standard voltage value V 0 . Through calculation, in order to limit the upper and lower limits of the ne...

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 the technical field of medical instruments, and particularly discloses a voltage compensation method based on a medical vacuum negative pressure machine. The method comprises the steps of: setting a standard voltage value; collecting current voltage values of different circuits; judging whether the negative pressure machine performs first collection or not according to a first collection air pressure mark; determining a voltage difference value addition and subtraction mark according to the first collection air pressure mark, the standard voltage value and the current voltage values; determining a compensation value according to the first collection air pressure mark, the voltage difference value addition and subtraction mark, the standard voltage value and the current voltage values; and automatically correcting the current voltage values according to the voltage difference value addition and subtraction mark and the compensation value to obtain a final voltage value. According to the voltage compensation method, the consistency of the working voltage of the air pressure sensor can be ensured, so that the consistency of the upper and lower limits of the exhaust air pressure of the negative pressure machine is ensured; and meanwhile, manual repeated testing of the upper and lower limits of the air pressure value and code modification and burning are replaced by uniform code burning, so that the manpower and time cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a voltage compensation method based on a medical vacuum negative pressure machine. Background technique [0002] In recent years, negative pressure wound therapy management, as a closed negative pressure therapy technology, has been widely used in various local tissue wound healing treatments. The application of negative pressure wound therapy management technology ensures the formation of a negative pressure environment on the tissue wound surface and promotes wound healing. [0003] At present, the collection of negative pressure values ​​involved in negative pressure wound treatment management technology is based on the research and development design of MEMS piezoresistive pressure sensors. Specifically, the MEMS piezoresistive pressure sensor and the MCU control center are two independent module circuits. Connected by circuit; MEMS piezoresistive pressure sensor is p...

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): F04B37/14F04B49/06F04B51/00
CPCF04B51/00F04B37/14F04B49/06
Inventor 徐明泉唐海涛丁文龙冯路横张健炜
Owner SUZHONG PHARMA GRP MEDICAL EQUIP CO LTD
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