CN204046600U - A kind of low-voltage power line interface arrangement based on carrier chip - Google Patents
A kind of low-voltage power line interface arrangement based on carrier chip Download PDFInfo
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- CN204046600U CN204046600U CN201420414166.3U CN201420414166U CN204046600U CN 204046600 U CN204046600 U CN 204046600U CN 201420414166 U CN201420414166 U CN 201420414166U CN 204046600 U CN204046600 U CN 204046600U
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- 230000008054 signal transmission Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 abstract description 25
- 230000005540 biological transmission Effects 0.000 abstract description 8
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Abstract
The utility model provides a kind of low-voltage power line interface arrangement based on carrier chip, object is to improve the more severe communication environment of low voltage power line communication channel, solve the larger interference that power frequency component brings to carrier communication system, the efficient communication realized between low-voltage power line and host controller is interconnected.It is based on the ST7538 carrier chip generally applied in current technology, coordinates filtering, power amplifier and protective circuit to realize effective transmission and the reception of signal.The utility model device not only integrated level is higher, effective amplification of carrier signal power can be realized, and the noise jamming that can reliably filter out in power frequency component, overcome the shortcoming that low-voltage power line efficiency of transmission is low, communication efficiency is poor, there is good application and development prospect.
Description
Technical field
The utility model relates to a kind of interface arrangement, particularly relates to a kind of low-voltage power line interface arrangement based on carrier chip.
Background technology
Nowadays, in countries in the world, power line communication technology obtains applying more and more widely.This is a kind of using power network as channel, carries out the wire communication mode of carrier communication.User can enter internet from power line, realize the network interconnection from simple transfer of data to complexity, but the communication environment one of low voltage power line communication channel, to relatively more severe, in most cases directly can not ensure the accurate transmission of signal of communication and effective utilization of control device.
Application number be 201220026210.4 utility model relate to the communications field, disclose a kind of power line carrier communication wireless aps terminal installation.In the utility model, power line carrier communication wireless aps terminal installation is provided with two network interfaces, and in power line carrier communication wireless aps terminal installation, be not only provided with electric power line carrier chip, also be provided with wireless routing chip, by this electric power line carrier chip by the network signal that is carried in power line by described communications interface transmission in router chip, by this wireless routing chip, by the IPTV ITV Signal transmissions in network signal in first network mouth; By the computer Wideband signal transmission in network signal in second network mouth, export while realizing ITV signal and computer broadband signal.
Application number be 201320657986.0 utility model disclose a kind of power-line carrier communication system, comprise sensor circuit, signal processing circuit and single-chip microcomputer; Described signal processing circuit comprises coupling circuit and power line carrier process chip, the output signal of coupling circuit is input to power line carrier process chip by bandwidth-limited circuit and preamplifying circuit successively, and the output signal of power line carrier process chip is input to coupling circuit by power amplification circuit; Power line is connected to coupling circuit by sensor circuit; Host computer is connected to power line carrier process chip by RS485 communication interface circuit, single-chip microcomputer successively.Wherein, power line carrier process chip model is SC1128, and single-chip microcomputer model is AT89C52.The utility model utilizes low-voltage power line as transmission medium, uses the data communication of spread spectrum communication electric power line carrier chip SC1128 and AT89C52 chip microcontroller.Have reasonable in design, syndeton is simple, and system energy consumption is low, operating efficiency is high.
Because low-voltage power line bears the electric energy transmission of 220V/50Hz or 110V/60Hz, so just closely bound up with resident's daily life, on line inevitably and connect the electrical appliance of many different impedances, power frequency component brings very large interference to carrier communication system.And consider the integrated factor of cost reason and space, address these problems, preferably can have a kind of communication interface of low-voltage power line, peace easily can be realized and tear open and communicate.
Utility model content
The utility model provides a kind of low-voltage power line interface arrangement based on carrier chip, and object is that the efficient communication realized between low-voltage power line and host controller is interconnected.
For achieving the above object, technical solution adopted in the utility model is: a kind of low-voltage power line interface arrangement, be made up of signal transmitting and receiving module and the microprocessor port be attached thereto respectively, power line interface, described signal transmitting and receiving module comprises carrier chip, coupling filter and the Signal reception path both connection and signal transmission path, described Signal reception path comprises passive voltage amplifier, and described signal transmission path comprises power amplifier, active voltage amplifier and supply source control module.
Described carrier chip is ST7538 modem chip, and its functional pin is connected with each circuit element of Signal reception passage, signal sendaisle.
Described coupling filter is connected with power line interface.
Described microprocessor port adopts serial interface mode, and the multichannel data that interface internal connects carrier chip controls and data transmit-receive pin, and interface outside connects the Microprocessor S3C44B0X port of host controller.
The functional realiey of this device is by by modem section and power line couples, realize that signal transmits on power line, coupling filter used is arrowband bandpass-type, namely parallel-tuned circuit composition is connected with coupling element (as inductance or electric capacity), with power amplifier, voltage amplifier is all known technology, does not repeat them here.
In signal process of transmitting, interface internal carries out filtering process to signal, and the certain noise of filtering as second harmonic, and makes signal have enough coupling power on power line by power amplifier; In Signal reception process, filtering is carried out to the noise mixed in the signal, and amplifying signal, then pass the signal in modulation /demodulation module and carry out demodulation.
The utility model device not only integrated level is higher, effective amplification of carrier signal power can be realized, and the noise jamming that can reliably filter out in power frequency component, overcome the shortcoming that low-voltage power line efficiency of transmission is low, communication efficiency is poor, there is good application and development prospect.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, a kind of low-voltage power line interface arrangement, is made up of signal transmitting and receiving module, microprocessor port and power line interface.
Described signal transmitting and receiving module is made up of carrier chip, coupling filter, power amplifier, voltage amplifier and supply source control module, described carrier chip is ST7538 modem chip, and its functional pin and each circuit element form Signal reception path and signal transmission path.
Described microprocessor port adopts serial interface mode, the multichannel data that interface internal connects ST7538 chip controls and data transmit-receive pin, as data transmit-receive TxD, RxD, Schema control RxTx, REG_DATA, clock control CLR/T etc., interface outside connects the Microprocessor S3C44B0X port of host controller.
This device is by by modem section and power line couples, realize that signal transmits on power line, in signal process of transmitting, interface internal carries out filtering process to signal, the certain noise of filtering as second harmonic, and makes signal have enough coupling power on power line by power amplifier; In Signal reception process, filtering is carried out to the noise mixed in the signal, and amplifying signal, then pass the signal in modulation /demodulation module and carry out demodulation.
Below for a signal transmitting and receiving cycle in detail, whole workflow is described in detail: after interface arrangement two ends connect host controller and power line respectively, host controller program completes initialization, and automatically enters the state receiving data from power line.Now start to detect interface arrangement and have carrier-less signal, if power line and serial ports are all countless reportedly send generation, then system enters detected state, restarts to detect power line, enters new round circulation.
If the carrier signal of having detected and correct, then host computer instruction controls carrier chip, send interrupt routine, send to avoid micro-process port and receive conflicting of data, and start to receive the data transmitted from power line, data elder generation to coupling filter, enters voltage amplifier by power line transmission after adjusting, enter reception analog input pin RAI and the amplifier in-phase input end pin C_PLUS of ST7538 subsequently, settling signal receives flow process; When host computer needs to send signal, by mode pins RxTx output state, make supply source control module to the amplifying circuit supply source of sendaisle, drive ATOP outgoing carrier signal by power line simultaneously, signal is after voltage amplifier and power amplifier process, enter coupling filter, after adjusting, namely signal transfers to low-voltage power line by power line interface, completes a signal transmitting and receiving cycle.
The utility model device not only integrated level is higher, effective amplification of carrier signal power can be realized, and the noise jamming that can reliably filter out in power frequency component, overcome the shortcoming that low-voltage power line efficiency of transmission is low, communication efficiency is poor, there is good application and development prospect.
Claims (4)
1. the low-voltage power line interface arrangement based on carrier chip, it is characterized in that: device is made up of signal transmitting and receiving module and the microprocessor port be attached thereto respectively, power line interface, described signal transmitting and receiving module comprises carrier chip, coupling filter and the Signal reception path both connection and signal transmission path, described Signal reception path comprises passive voltage amplifier, and described signal transmission path comprises power amplifier, active voltage amplifier and supply source control module.
2. low-voltage power line interface arrangement as claimed in claim 1, it is characterized in that: described carrier chip is ST7538 modem chip, its functional pin is connected with each circuit element of Signal reception passage, signal sendaisle.
3. low-voltage power line interface arrangement as claimed in claim 1, is characterized in that: described coupling filter is connected with power line interface.
4. low-voltage power line interface arrangement as claimed in claim 1, it is characterized in that: described microprocessor port adopts serial interface mode, the multichannel data that interface internal connects carrier chip controls and data transmit-receive pin, and interface outside connects the Microprocessor S3C44B0X port of host controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420414166.3U CN204046600U (en) | 2014-07-25 | 2014-07-25 | A kind of low-voltage power line interface arrangement based on carrier chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420414166.3U CN204046600U (en) | 2014-07-25 | 2014-07-25 | A kind of low-voltage power line interface arrangement based on carrier chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204046600U true CN204046600U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420414166.3U Expired - Fee Related CN204046600U (en) | 2014-07-25 | 2014-07-25 | A kind of low-voltage power line interface arrangement based on carrier chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835384A (en) * | 2020-07-27 | 2020-10-27 | 珠海格力电器股份有限公司 | Power line carrier communication power module, power line carrier communication cable and magnetic suspension motor system |
| CN112367100A (en) * | 2020-09-30 | 2021-02-12 | 北京机电工程研究所 | Power line carrier communication control circuit based on Ethernet and serial interface |
-
2014
- 2014-07-25 CN CN201420414166.3U patent/CN204046600U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835384A (en) * | 2020-07-27 | 2020-10-27 | 珠海格力电器股份有限公司 | Power line carrier communication power module, power line carrier communication cable and magnetic suspension motor system |
| CN112367100A (en) * | 2020-09-30 | 2021-02-12 | 北京机电工程研究所 | Power line carrier communication control circuit based on Ethernet and serial interface |
| CN112367100B (en) * | 2020-09-30 | 2022-01-04 | 北京机电工程研究所 | Power line carrier communication control circuit based on Ethernet and serial interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150725 |
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| EXPY | Termination of patent right or utility model |