CN204258741U - A kind of power amplification device for repeater - Google Patents
A kind of power amplification device for repeater Download PDFInfo
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- CN204258741U CN204258741U CN201420844561.5U CN201420844561U CN204258741U CN 204258741 U CN204258741 U CN 204258741U CN 201420844561 U CN201420844561 U CN 201420844561U CN 204258741 U CN204258741 U CN 204258741U
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Abstract
For a power amplification device for repeater, this power amplification device comprises: the radio-frequency (RF) switch exported by control chip control signal, and described radio-frequency (RF) switch has the first input end receiving main path signal and the second input receiving standby road signal; Mixer, described mixer have be connected with the output of described radio-frequency (RF) switch the 3rd input, receive from the four-input terminal of road signal and the output to attenuator output signal.Add in this power amplification device from road signalling channel, like this, when main path signal passage and standby road signalling channel simultaneous faults, also can ensure the normal work of repeater, add the reliability of equipment.
Description
Technical field
The utility model belongs to Repeater Technology field, particularly relates to a kind of power amplification device for repeater.
Background technology
In railway communication equipment, the quality of communication line is the key that communication equipment normally works.In the occasion that this requirement of railway is strict, communication equipment also needs to have high reliability.Circuit backup a kind ofly facilitates feasible way.
In existing technology, the optical module of repeater near-end machine be all directly export higher gain signal to repeater remote termination, power amplification device can not be adopted to process less signal, and adopt power amplification device, also only have main road and standby two, road passage.
So the power amplification device of existing repeater all only has main road and standby two, road signalling channel, and when these two signalling channels break down, the work of repeater will be affected, thus cannot normally work.
Utility model content
In view of this, an object of the present utility model proposes a kind of power amplification device for repeater, to solve the problem that when main path signal passage in prior art in power amplification device and standby road signalling channel break down, repeater cannot normally work simultaneously.There is a basic understanding some aspects in order to the embodiment to disclosure, shown below is simple summary.This summarized section is not extensive overview, neither determine key/critical component or describe the protection range of these embodiments.Its sole purpose presents some concepts by simple form, in this, as the preamble of following detailed description.
In some optional embodiments, this power amplification device comprises: the radio-frequency (RF) switch exported by control chip control signal, and described radio-frequency (RF) switch has the first input end receiving main path signal and the second input receiving standby road signal; Mixer, described mixer have be connected with the output of described radio-frequency (RF) switch the 3rd input, receive from the four-input terminal of road signal and the output to attenuator output signal.
In some optional embodiments, in this power amplification device, attenuator has the 5th input be connected with the output of mixer and the 6th input be connected with control chip.
In some optional embodiments, this power amplification device also comprises: amplifier and filter; The input of described amplifier is connected with the output of attenuator; The output of described amplifier is connected with the input of described filter.
In some optional embodiments, this power amplification device also comprises: the power splitter with two outputs, and the input of this power splitter is connected with the output of filter.
In some optional embodiments, in this power amplification device, control chip has the interface connecting temperature sensor, the interface connecting current sensing means and carries out the interface of transfer of data with external equipment.
In some optional embodiments, in this power amplification device, control chip is single-chip microcomputer.
In some optional embodiments, this power amplification device also comprises: be connected with single-chip microcomputer, for carrying out the RS485 PORT COM of transfer of data with external equipment.
In some optional embodiments, this power amplification device median filter is Surface Acoustic Wave Filter.
In some optional embodiments, this power amplification device also comprises: supply unit, and described supply unit has the connection input port of external power supply and the output port of 8V, 5V, 4.8V, 3.3V.
In some optional embodiments, in this power amplification device, attenuator is digital step attenuator.
Compared with prior art, the beneficial effects of the utility model are:
The utility model provides a kind of power amplification device for repeater, this power amplification device adds from road signalling channel, the switching between main path signal and standby road signal is realized by Single-chip Controlling radio-frequency (RF) switch, when main path signal passage and standby road signalling channel all break down, can by realizing the normal work of power amplification device from road signalling channel, for the normal work of repeater provides larger guarantee.
In order to above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more embodiment comprises.Explanation below and accompanying drawing describe some illustrative aspects in detail, and its instruction is only some modes in the utilizable various mode of principle of each embodiment.Other benefit and novel features become obvious by considering by reference to the accompanying drawings along with detailed description below, and the disclosed embodiments will comprise all these aspects and theirs is equivalent.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the power amplification device for repeater of the utility model embodiment.
Embodiment
The following description and drawings fully show specific embodiments of the present utility model, to enable those skilled in the art to put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise independent parts and function are optional, and the order of operation can change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The scope of embodiment of the present utility model comprises the gamut of claims, and all obtainable equivalent of claims.In this article, these embodiments of the present utility model can be represented with term " utility model " individually or always, this is only used to conveniently, and if in fact disclose the utility model more than, be not the scope that automatically will limit this application be any single utility model or utility model design.
Before introducing embodiment of the present utility model further, first brief description is done to some technical terms in literary composition.Herein, radio-frequency (RF) switch belongs to cable television network or communication field signaling switch, for wire transmission radiofrequency signal by control.Mixer, is exported by a feeder line after multiple signals being closed road.Attenuator, in the frequency range of specifying, introduces the circuit of a predetermined decay, for carrying out gain control to signal.Amplifier, for amplifying the voltage of input signal or power.Power splitter, is divided into two-way by a road input signal energy or multiple-channel output is equal or the device of unequal energy, for a road signal is divided into two-way or multiple-channel output.RS485 PORT COM, carries out the transmission of data, the data of single-chip microcomputer is sent to external equipment for single-chip microcomputer and external equipment, or receives data from external equipment.
Now in conjunction with the accompanying drawings, shown in Fig. 1 is structured flowchart for the power amplification device of repeater in some optional embodiments.
As shown in Figure 1, in some optional embodiments, disclose a kind of power amplification device 100 for repeater, this power amplification device 100 comprises: the radio-frequency (RF) switch 102 exported by control chip 101 control signal, and described radio-frequency (RF) switch 102 has the first input end receiving main path signal and the second input receiving standby road signal; Mixer 103, described mixer 103 have be connected with the output of described radio-frequency (RF) switch 102 the 3rd input, receive from the four-input terminal of road signal and the output that outputs signal to attenuator 104.In concrete implementation process, main path signal is identical with the intensity of standby road signal, from ratio of gains main path signal and the standby low 6dB of road signal of road signal, wherein, radio-frequency (RF) switch 102 is controlled by control chip 101, realize the switching between main path signal and standby road signal, mainly select to connect main road or standby road by the low and high level on two pins of control chip 101 (such as single-chip microcomputer), thus the switching realized between main path signal and standby road signal, when main path signal and standby road signal break down simultaneously, this power amplification device 100 automatic search is from road signal, thus realize main path signal or standby road signal to the switching from road signal, guarantee system can work normally.
In some optional embodiments, in this power amplification device 100, attenuator 104 has the 5th input be connected with the output of mixer 103 and the 6th input be connected with control chip 101.In concrete implementation process, in this power amplification device 100, attenuator 104 can select digital step attenuator.Digital step attenuator realizes the setting of pad value by serial line interface, and pad value can be arranged between 0 ~ 31.5dB, and stepping is 0.5dB, and the gain that can realize nearly 64 grades like this controls.
In some optional embodiments, this power amplification device 100 also comprises: amplifier 105 and filter 106; The input of described amplifier 105 is connected with the output of attenuator 104; The output of described amplifier 105 is connected with the input of described filter 106.In concrete implementation process, filter 106 in this power amplification device 100 can select Surface Acoustic Wave Filter Z120, Surface Acoustic Wave Filter Z120 can detect that frequency is signal within the scope of 930MHz ~ 934MHz and makes it pass through, and the signal of other frequency is filtered, and can not pass through.
In some optional embodiments, this power amplification device 100 also comprises: the power splitter 107 with two outputs, and the input of this power splitter 107 is connected with the output of filter 106.
In some optional embodiments, in this power amplification device 100, control chip 101 has the interface connecting temperature sensor 108, the interface connecting current sensing means 109 and carries out the interface of transfer of data with external equipment.In concrete implementation process, sampling can be carried out by the electric current consumed power amplification device 100 and detect in real time, to detect the working condition of this power amplification device 100, the temperature of this power amplification device 100 inside is detected in real time by temperature sensor 108, thus conveniently this power amplification device 100 is regulated and controled, ensure the normal work of this power amplification device 100.
In some optional embodiments, in this power amplification device 100, control chip 101 is single-chip microcomputer.In concrete implementation process, single-chip microcomputer PIC16F876A can be selected.
In some optional embodiments, this power amplification device 100 also comprises: be connected with single-chip microcomputer, for carrying out the RS485 PORT COM 110 of transfer of data with external equipment, by this RS485 PORT COM 110, this power amplification device achieves the transfer of data between external equipment.In concrete implementation process, single-chip microcomputer 101 in this power amplification device 100 receives the instruction of master controller transmission by RS485 PORT COM 110, and control radio-frequency (RF) switch 102 and attenuator 104 according to this instruction, accordingly, also can be sent to master controller by the response of control command by described RS485 PORT COM, thus realize this power amplification device 100 or comprise between the repeater of this power amplification device 100 and master controller mutual.
In some optional embodiments, this power amplification device 100 also comprises: supply unit 111, and described supply unit 111 has the connection input port of external power supply and the output port of 8V, 5V, 4.8V, 3.3V.In concrete implementation process, the 12V voltage of outside input, through the supply unit 111 of this power amplification device 100 inside, one tunnel step-down is 5V, for single-chip microcomputer 101, RS485 PORT COM 110, radio-frequency (RF) switch 102, temperature sensor 108, current sensing means 109, amplifier 105 provide power supply or step-down further, another road step-down is 8V, for attenuator 104 provides power supply, 3rd tunnel step-down is 4.8V, for the AD converter of single-chip microcomputer 101 provides a reference source, wherein the further step-down of 5V is 3.3V, for digital step attenuator 104 provides power supply.
The specific works principle of this power amplification device is: single-chip microcomputer 101 receives the control command of master controller by RS485 PORT COM 110, regulate and control according to this control command radio frequency switch 102, select to connect main path signal passage or standby road signalling channel, when main path signal passage and standby road signalling channel break down simultaneously, this power amplification device 100 automatic search is to from road signal, the signal be switched on afterwards enters into attenuator 104 by mixer 103, the control command that attenuator 104 receives according to single-chip microcomputer 101 carries out gain control to signal, carry out amplification afterwards and filtering enters into power splitter 107, two-way is divided into output to follow-up power amplifier.
Power amplification device of the present utility model can be applied in repeater remote termination or near-end machine, adopt power amplification device of the present utility model only just need can ensure good three rank indexs in repeater to the signal of the less gain of direct discharging station transmission, and add in this power amplification device from road signalling channel, like this, when main path signal passage and standby road signalling channel simultaneous faults, also can ensure the normal work of repeater, add the reliability of equipment.
In a word, the foregoing is only embodiment of the present utility model, only for illustration of principle of the present utility model, be not intended to limit protection range of the present utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. for a power amplification device for repeater, it is characterized in that, comprising:
By the radio-frequency (RF) switch that control chip control signal exports, described radio-frequency (RF) switch has the first input end receiving main path signal and the second input receiving standby road signal;
Mixer, described mixer have be connected with the output of described radio-frequency (RF) switch the 3rd input, receive from the four-input terminal of road signal and the output to attenuator output signal.
2. power amplification device according to claim 1, is characterized in that, described attenuator has the 5th input be connected with the output of described mixer and the 6th input be connected with described control chip.
3. power amplification device according to claim 2, is characterized in that, also comprises: amplifier and filter; The input of described amplifier is connected with the output of described attenuator; The output of described amplifier is connected with the input of described filter.
4. power amplification device according to claim 3, is characterized in that, also comprises: the power splitter with two outputs, and the input of this power splitter is connected with the output of described filter.
5. power amplification device according to claim 4, is characterized in that, described control chip has the interface connecting temperature sensor, the interface connecting current sensing means and carries out the interface of transfer of data with external equipment.
6. power amplification device according to claim 5, is characterized in that, described control chip is single-chip microcomputer.
7. power amplification device according to claim 6, is characterized in that, also comprises: be connected with described single-chip microcomputer, for carrying out the RS485 PORT COM of transfer of data with external equipment.
8. power amplification device according to claim 7, is characterized in that, described filter is Surface Acoustic Wave Filter.
9. power amplification device according to claim 8, is characterized in that, also comprises: supply unit, and described supply unit has the connection input port of external power supply and the output port of 8V, 5V, 4.8V, 3.3V.
10. the power amplification device according to claim 1 to 9 any one, is characterized in that, described attenuator is digital step attenuator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420844561.5U CN204258741U (en) | 2014-12-26 | 2014-12-26 | A kind of power amplification device for repeater |
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| CN201420844561.5U CN204258741U (en) | 2014-12-26 | 2014-12-26 | A kind of power amplification device for repeater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141332A (en) * | 2015-09-16 | 2015-12-09 | 南京捷希科技有限公司 | Pluggable radio frequency matrix |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141332A (en) * | 2015-09-16 | 2015-12-09 | 南京捷希科技有限公司 | Pluggable radio frequency matrix |
| CN105141332B (en) * | 2015-09-16 | 2017-08-22 | 南京捷希科技有限公司 | A kind of pluggable radio frequency matrix |
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