Unlock instant, AI-driven research and patent intelligence for your innovation.

Substation, signal transmission system and method, and network topology thereof

A transmission system and substation technology, applied in the field of signal transmission, can solve the problem of limited number of terminals, and achieve the effects of low cost, simple system and long transmission distance

Inactive Publication Date: 2015-06-17
北京弥佳电子科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is mostly used in small areas, such as squares and campuses, and the number of terminals in this transmission method is limited

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
  • Substation, signal transmission system and method, and network topology thereof
  • Substation, signal transmission system and method, and network topology thereof
  • Substation, signal transmission system and method, and network topology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] Aiming at the actual use environment in mines and tunnels, the invention provides a novel cluster intercom communication, broadcasting and personnel positioning system for mines and tunnels.

[0072] Data transmission in the system of the present invention adopts multi-FM signal transmission. Since this system adopts a multi-band signal modulation method, the requirements for the transmission medium after signal processing are relatively low, and ordinary communication cables are sufficient. Preferably, the ordinary communication cable is a flame-retardant communication cable for mine use, the model is MHYV1*2*7 / 0.37, and the nominal cross-section is 0.75mm 2 , the farthest wired transmission distance of this signal cable can reach 10km. Compared with the traditional transmission mode, the system of the present invention is not affected by the networking mode and the construction environment, has high transmission rate (up to 100Kbps), large amount of information compa...

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 provides a substation, a multi-band signal transmission system and a method including the substation and a network topology thereof. The system uses common communication cables as media, and transmits data through communication substations. The data is transmitted through multi-band frequency-shift keying (FSK) frequency modulated signals. The signal transmission system has the advantage that the system and construction are simple, the cost is low, single-stage transmitting distance is long, data transmission capacity is large, networking modes are flexible and efficient, and terminal substations have a large quantity and a wide coverage area.

Description

technical field [0001] The invention relates to the signal transmission of cluster intercom communication, broadcasting and personnel positioning system for mines and tunnels. Specifically, it relates to a substation, a multi-band FSK FM signal transmission system and method, and a network topology used therefor. Background technique [0002] The electromagnetic environment of mines and tunnels is complex, the transmission loss of electromagnetic waves in space is serious, and the wireless communication distance is short. Wireless communication must extend the communication distance by means of wired signal transmission. [0003] At present, mines and tunnels use cluster intercom communication, broadcasting, and personnel positioning systems to use the following signal transmission methods: [0004] First, leaky cable transmission. Traditional communication equipment mostly uses leaky cables as the transmission medium, and leaky cables are also responsible for wireless sig...

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 Patents(China)
IPC IPC(8): H04L12/28
Inventor 李润杨聂清唐薇
Owner 北京弥佳电子科技有限公司