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

Sewing machine, short-circuit protection system and method thereof

A protection system and sewing machine technology, applied in the field of sewing, can solve problems such as damage to hardware drive circuits, and achieve the effect of avoiding hardware damage

Active Publication Date: 2019-05-03
ZHEJIANG ZOBOW MECHANICAL & ELECTRICAL TECH
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the impact of the short-circuit current of multiple control cycles in the early stage, the hardware drive circuit may be damaged

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
  • Sewing machine, short-circuit protection system and method thereof
  • Sewing machine, short-circuit protection system and method thereof
  • Sewing machine, short-circuit protection system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The core of the present invention is to provide a short-circuit protection system for sewing machines, which is beneficial to more timely detection of short-circuit conditions.

[0047] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a short-circuit protection system for a sewing machine in the present invention, and the protection system may include:

[0049] The main con...

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 discloses a short-circuit protection system of a sewing machine. The system comprises a main control module used for sequentially sending a first control instruction of a first time length and a second control instruction of a second time length after detecting that a motor is started, then controlling the motor in an SVPWM mode, and closing the output of the main control module itself to a driving chip upon receiving an interrupt instruction; the driving chip used for controlling the on-off state of each bridge arm in a three-phase inverter circuit to be maintained as a first combination upon receiving the first control instruction, controlling the on-off state of each bridge arm in the three-phase inverter circuit to be maintained as a second combination upon receiving thesecond control instruction, closing the output of the three-phase inverter circuit and sending an interrupt instruction to the main control module upon detecting the over-current condition of a bus current; and the three-phase inverter circuit. By applying the scheme provided by the invention, whether the short circuit condition exists or not can be detected when the motor is started. The invention further discloses a sewing machine and a short-circuit protection method thereof. The sewing machine and the short-circuit protection method have corresponding effects.

Description

technical field [0001] The invention relates to the technical field of sewing, in particular to a sewing machine and its short-circuit protection system and protection method. Background technique [0002] With the development and progress of the sewing industry, the requirements for the stability and reliability of the sewing machine controller are getting higher and higher. At present, in order to prevent the hardware in the driving circuit of the sewing machine controller from being damaged due to short circuit, the main methods are software detection and hardware detection. The short circuit may be a short circuit of the phase wires of the motor, or a short circuit of the motor controller. For example, the controllable switch on a bridge arm in the controller is damaged, resulting in the communication between the upper and lower bridges, thereby short-circuiting the input power and the ground. In , the short circuit of the motor phase line and the short circuit of the c...

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): H02H7/08
Inventor 杨允希
Owner ZHEJIANG ZOBOW MECHANICAL & ELECTRICAL TECH
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