CN2899309Y - Multi-node radio-frequency data transmitting system - Google Patents
Multi-node radio-frequency data transmitting system Download PDFInfo
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- CN2899309Y CN2899309Y CN 200620103607 CN200620103607U CN2899309Y CN 2899309 Y CN2899309 Y CN 2899309Y CN 200620103607 CN200620103607 CN 200620103607 CN 200620103607 U CN200620103607 U CN 200620103607U CN 2899309 Y CN2899309 Y CN 2899309Y
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Abstract
The utility model relates to a structural improvement to a multi-node radio-frequency data transmitting system. The utility model comprises a plurality of information source/information sink devices and a plurality of radio-frequency nodes connected with the information source/information sink devices all of which are distributed within a radio-frequency network, and is characterized in that the information source/information sink devices are connected with the corresponding radio-frequency nodes via a serial communication interface; the radio-frequency communication nodes comprises a main control chip for transmitting and receiving a signal and making match determination to the signal, the serial interface of the main control chip is connected with a serial communication interface via a level conversion chip. Consequently, the utility model has advantages that:1.It is reasonable in design, simple in structure and easy to implement; 2, It is simple and convenient to transmit data, and single node data transmission can be adopted to implement long distance radio-frequency data transmission; 3, The equipment has low cost, good work stability and facilitates the operation of a user.
Description
Technical field
The utility model relates to a kind of data transmission device, especially relates to a kind of structural improvement to less radio-frequency multinode data transmission system.
Background technology
Wireless data transmission and mechanics of communication are with its characteristics development such as convenient, removable rapidly.Along with technological progress, the application of wireless telecommunications and the wireless network expansion of the various aspects in our daily life rapidly.With wireless SOC (system on a chip) (SoC) is the low-power consumption of core, and small size, communication of low price embedded radio and Radio Network System have obtained developing rapidly in recent years, has produced countless new application and new market.Wireless radio-frequency is an important means of wireless data transmission, uses very extensive.
Owing to utilize wireless radio frequency mode to carry out relatively complexity of transfer of data, and need to develop the multinode communications protocol especially if realize the data communication of multinode.This has brought inconvenience and difficult for the application of wireless multinode.For the ease of using, people have carried out long-term exploration, have proposed various improvement projects.For example, Chinese patent literature discloses a kind of catching device (application number: CN200320121652.8) for the less radio-frequency discrimination system, it comprises a catching device, a memory chip that is used for storing various data links to each other with catching device, and memory chip also links to each other with an antenna that can produce induced electromotive force.This catching device is easy to carry about with one when using data card, the convenient use.But the multinode communications protocol mode that remains that this scheme adopts is carried out the transmission of data, should use to have a lot of inconveniences.
Summary of the invention
The utility model mainly is to solve comparatively complexity of existing in prior technology structure, carries out the transmission of data by the multinode communications protocol, the technical problem of the bigger grade of application difficulty; Provide a kind of simple in structure, easy to implement, single-node data transmission, the efficient height of transmission, less radio-frequency multinode data transmission system easy to utilize.
It is to solve existing in prior technology equipment manufacturing cost cost height, the technical problem of the big grade of the difficulty of manipulating that the utility model also has a purpose; Provide a kind of cost lower, be convenient to the less radio-frequency multinode data transmission system that the operator uses.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: less radio-frequency multinode data transmission system, comprise the some information source/sink device that are distributed in the radio frequency network, the some less radio-frequency nodes that link to each other with information source/sink device, it is characterized in that, link to each other by serial communication interface between described information source/sink device and the less radio-frequency node correspondingly, described less radio-frequency node comprises and is used for receiving and transmitting signal and signal is made the main control chip that coupling is differentiated that the serial line interface of main control chip links to each other with serial communication interface by level transferring chip.
As preferably, the main control chip of described less radio-frequency node is nRF9E5, and described level transferring chip is MAX3232CSE, and the serial communication interface that links to each other with level transferring chip is RS232.
The utility model makes the user utilize radio frequency network transmission data to become very simple.The user no longer needs understanding how to use less radio-frequency to transmit data, does not also need to understand complicated multinode network communications protocol.Only need just can realize like a cork the wireless transmission of data by common RS232 serial communication interface.
As preferably, described main control chip has a signal receiver and a signal projector, and described signal receiver links to each other with information source/stay of two nights matching unit with signal projector.
As preferably, described information source/stay of two nights matching unit comprises header recognition unit, destination address recognition unit, source address recognition unit, signal content recognition unit and verification unit.
As preferably, the pin ANT1 of described main control chip nRF9E5 links to each other with annular differential antennae with ANT2.
Therefore, the utlity model has following advantage: 1. reasonable in design, simple in structure, easy to implement;
2. the transmission of data is easy, adopts the single-node data transmission means can realize the transmission of remote-wireless rf data; 3. equipment cost is lower, and good operating stability is convenient to user's operation.
Description of drawings
Accompanying drawing 1 is a kind of theory diagram of the present utility model;
Accompanying drawing 2 is structured flowcharts of information source in the utility model/stay of two nights matching unit;
Accompanying drawing 3 is electric structure charts of a kind of less radio-frequency node of the present utility model.
Among the figure, radio frequency network 1, information source/sink device 2, less radio-frequency node 3, serial communication interface 4, main control chip 5, signal receiver 51, signal projector 52, level transferring chip 6, information source/stay of two nights matching unit 53, header recognition unit 53a, destination address recognition unit 53b, source address recognition unit 53c, signal content recognition unit 53d, verification unit 53e.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As shown in Figure 1, less radio-frequency multinode data transmission system comprises the some information source/sink device 2 that are distributed in the radio frequency network 1, the some less radio-frequency nodes 3 that link to each other with information source/sink device 2.Link to each other by serial communication interface 4 between information source/sink device 2 and the less radio-frequency node 3 correspondingly, described less radio-frequency node 3 comprises and is used for receiving and transmitting signal and signal is made the main control chip 5 that coupling is differentiated that the serial line interface of main control chip 5 links to each other with serial communication interface 4 by level transferring chip 6.Wherein, the main control chip 5 of less radio-frequency node 3 is nRF9E5, and described level transferring chip 6 is MAX3232CSE, and the serial communication interface 4 that links to each other with level transferring chip 6 is RS232.Its detailed circuit connected mode as shown in Figure 3.The pin ANT1 of main control chip nRF9E5 links to each other with annular differential antennae with ANT2.
Main control chip 5 has a signal receiver 51 and a signal projector 52, and described signal receiver 51 links to each other with information source/stay of two nights matching unit 53 with signal projector 52.As shown in Figure 2, information source/stay of two nights matching unit 53 comprises header recognition unit 53a, destination address recognition unit 53b, source address recognition unit 53c, signal content recognition unit 53d and verification unit 53e.
The RS232 serial communication interface is a kind of transfer of data communication interface that is in daily use, development and utilization easily, but because RS232 is a kind of cable data transmission mode, the mobility of system is made troubles.The data that signal receiver 51 by node will need to send send out by the RS232 mode, are forwarded to destination node by less radio-frequency.Node is transmitted by the RS232 interface from the data that wireless network receives simultaneously.Data are accepted by the RS232 interface and are sent, thereby have realized the transmission of wireless network, are convenient to user's use.
As shown in Figure 3, what system adopted is that nRF9E5 is as main control chip, nRF9E5 is the system-level RF chip that NordicVLSI company released on February 5th, 2004, its built-in nRF905433/868/915MHz transceiver, 8051 compatible microcontrollers and 10 80ksps A/D converters of 4 inputs are real system level chips.Built-in nRF905 transceiver is the same with the transceiver of nRF905 chip, can work in ShockBurst (handling prefix, address and CRC automatically) mode.The built-in voltage adjusting module suppresses noise to greatest extent, for system provides the operating voltage of 1.9～3.6V, and QFN5 * 5mm encapsulation, carrier wave detects.NRF9E5 meets the relevant criterion of Federal Communications Commission and ETSI European Telecommunications Standards Institute.Because nRF905 is low in energy consumption, therefore reliable operation is applicable to the design of wireless system for transmitting data very much.Among the figure, the crystal oscillator operating frequency is 16MHz.
Native system adopts the time-division multiple access (TDMA) communication technology, and the communication mode between multinode is converted into point-to-point communication, has effectively got rid of interference, and is easy to use.
Various chips in the utility model, and the disclosed content of the connected mode prior art between the chip, this paper does not do and gives unnecessary details.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used radio frequency network 1, information source/sink device 2, less radio-frequency node 3, serial communication interface 4, main control chip 5, signal receiver 51, signal projector 52, level transferring chip 6, information source/stay of two nights matching unit 53, header recognition unit 53a, destination address recognition unit 53b, source address recognition unit 53c, terms such as signal content recognition unit 53d, verification unit 53e morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (5)
1. less radio-frequency multinode data transmission system, comprise the some information source/sink device (2) that are distributed in the radio frequency network (1), the some less radio-frequency nodes (3) that link to each other with information source/sink device (2), it is characterized in that, link to each other by serial communication interface (4) between described information source/sink device (2) and the less radio-frequency node (3) correspondingly, described less radio-frequency node (3) comprises and is used for receiving and transmitting signal and signal is made the main control chip (5) that coupling is differentiated that the serial line interface of main control chip (5) links to each other with serial communication interface (4) by level transferring chip (6).
2. less radio-frequency multinode data transmission system according to claim 1, the main control chip (5) that it is characterized in that described less radio-frequency node (3) is nRF9E5, described level transferring chip (6) is MAX3232CSE, and the serial communication interface (4) that links to each other with level transferring chip (6) is RS232.
3. less radio-frequency multinode data transmission system according to claim 1 and 2, it is characterized in that described main control chip (5) has a signal receiver (51) and a signal projector (52), described signal receiver (51) links to each other with information source/stay of two nights matching unit (53) with signal projector (52).
4. less radio-frequency multinode data transmission system according to claim 3 is characterized in that described information source/stay of two nights matching unit (53) comprises header recognition unit (53a), destination address recognition unit (53b), source address recognition unit (53c), signal content recognition unit (53d) and verification unit (53e).
5. less radio-frequency multinode data transmission system according to claim 3 is characterized in that the pin ANT1 of described main control chip nRF9E5 links to each other with annular differential antennae with ANT2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103607 CN2899309Y (en) | 2006-05-15 | 2006-05-15 | Multi-node radio-frequency data transmitting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103607 CN2899309Y (en) | 2006-05-15 | 2006-05-15 | Multi-node radio-frequency data transmitting system |
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| CN2899309Y true CN2899309Y (en) | 2007-05-09 |
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| CN 200620103607 Expired - Fee Related CN2899309Y (en) | 2006-05-15 | 2006-05-15 | Multi-node radio-frequency data transmitting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814925A (en) * | 2010-03-04 | 2010-08-25 | 李华 | Wireless sensor node system adopting cognitive radio technology and control method thereof |
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2006
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814925A (en) * | 2010-03-04 | 2010-08-25 | 李华 | Wireless sensor node system adopting cognitive radio technology and control method thereof |
| CN101814925B (en) * | 2010-03-04 | 2013-04-10 | 李华 | Wireless sensor node system adopting cognitive radio technology and control method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |