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Autonomous intelligent radio frequency control network

A technology of control network and radio frequency network, applied in the direction of data exchange network, energy consumption reduction, energy saving ICT, etc., which can solve the problems of short link range and only point-to-point connection establishment

Inactive Publication Date: 2009-07-01
金展
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, infrared connections have a number of disadvantages: the range of the link is usually very short, on the order of two meters, infrared links require precise alignment, no obstacles are allowed between transmitter and receiver, and besides, infrared A point-to-point connection can be established, that is, only two devices can communicate with each other
This limits, for example, the use of RF networks in offices to control calls on a large scale

Method used

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  • Autonomous intelligent radio frequency control network
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  • Autonomous intelligent radio frequency control network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, independent type intelligent radio frequency control network, adopt nRF9E5 in the circuit and be the system level RF chip that Nordic VLSI company releases, built-in enhanced type 8051 compatible microcontroller, nRF905 radio frequency transceiver of 433 / 868 / 915MHz and 4 roads input 10 Bit 80kbps A / D converter, in addition to CKLF clock, RTC wake-up timer, GPIO wake-up and WTD, and some special function registers. The chip is embedded with a voltage adjustment module to suppress noise to the greatest extent. It can work on a single power supply of 1.9V to 3.6V, and the standby power consumption is 2μA. The microcontroller uses a 1MHz crystal oscillator (M in the figure), and it is recommended that C1=C2≈22pf (C1: phase adjustment capacitor; C2: gain adjustment capacitor). as attached Figure 5 As shown, choosing this chip can reduce the power consumption and peripheral short circuit of the node chip, increase the anti-interference and reduce the cost of t...

Embodiment 2

[0024] Embodiment 2, autonomous intelligent radio frequency control network, on the basis of embodiment 1, realize point-to-point and point-to-multipoint communication; Its core is that nRF9E5 transceiver communicates with other modules through internal SPI port, has the same single-chip radio frequency Transceiver nRF905 has the same functions: carrier monitoring output CD, which can avoid space wireless communication collision; address matching output AR, easy to realize point-to-multipoint wireless communication design; data receiving ready DR, convenient for energy-saving design and meet low power consumption design requirements. Built-in complete communication protocol and CRC verification, all wireless transmission and reception can be completed only through SPI. Output power, channel, and other RF parameters can be controlled by programming the special function register RADIO (0xAO). The RF current consumption is 11mA in transmit mode and 12.5mA in receive mode.

[002...

Embodiment 3

[0029] Embodiment 3, an autonomous intelligent radio frequency control network, on the basis of Embodiment 1, realizes dynamic establishment of a routing table to realize system communication; its core is that when the table is built, the main chip has a carrier monitoring output CD, which can avoid space wireless communication Collision; define the communication frame format of each node to realize the one-to-many function. The format of the control data communication frame of each node is as follows:

[0030]

[0031]The boot code and check code are automatically loaded by the node, and the others are generated by the built-in microcontroller program. The identification code is the code of this receiver, which is distinguished from other receivers. The status word is 1 bit, and when the value is 0, it means that the following data is a command word, otherwise it is a data word. Data 1...N sets the number of words according to the actual situation. The stuffing code ind...

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Abstract

The invention discloses an autonomous intelligent RF control network system, which comprises nodes and a host computer. Each node comprises a receiving-transmitting control part, a singlechip circuit part and an upper-computer processing software part; the receiving-transmitting control part comprises a routing list setting module and a receiving-transmitting RF communication module; the singlechip circuit part comprises a system state indicating module, a memory chip, a singlechip control module and a power supply module; and the upper-computer processing software part comprises a device address list analysis module, the receiving-transmitting RF communication module, the singlechip control module and an information processing module. The whole system control adopts the singlechip technology, has a carrier wave monitoring output CD, and can avoid the space wireless communication collision; an address matching output AR is provided, so that the point-to-multipoint wireless communication design can be realized easily; and a data receiving ready DR is provided, thereby facilitating the energy-saving design and satisfying low power consumption designing requirement. Integral communication protocol and CRC efficacy are installed internally, so that all wireless transceiving transmission can be completed. Compared with the prior art, the autonomous intelligent RF control network system has the characteristics of strong anti-interference performance, no false action, low power consumption and farther intelligent routing and communication distance, and is unacted on barriers because an RF signal system controlled by a singlechip is adopted. The system is applied to dangerous industrial control sites such as a mine and the like, is widely used in the fields such as automatic building control, intelligent vehicle traffic and the like, and has higher economic benefits and social benefits.

Description

technical field [0001] The invention relates to an autonomous intelligent radio frequency control network, which belongs to the control of wireless low-power radio frequency network. Background technique [0002] In order to be able to work together and control, home offices, mines and other dangerous industrial sites, intelligent buildings and transportation have a wide range of applications, such as mine gas measurement, control, alarm and emergency systems, etc., are usually at least partially interconnected through connecting cables. In order to form a comprehensive and well-manipulated network system, and to combine various devices in the same system, a large number of cables are required between the devices. Furthermore, the limited connection possibilities make it often difficult to set up such systems, especially in those dangerous mines, toxic industrial sites, where maintenance will be greatly increased. Recently, the number of various portable information technol...

Claims

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Application Information

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IPC IPC(8): H04L12/02H04L12/56H04B5/00G08C17/02
CPCY02B60/50Y02D30/70
Inventor 金展
Owner 金展
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