CN206517419U - A kind of signal switching strobe unit between radio station and tester - Google Patents
A kind of signal switching strobe unit between radio station and tester Download PDFInfo
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- CN206517419U CN206517419U CN201720142633.5U CN201720142633U CN206517419U CN 206517419 U CN206517419 U CN 206517419U CN 201720142633 U CN201720142633 U CN 201720142633U CN 206517419 U CN206517419 U CN 206517419U
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Abstract
A kind of signal switching strobe unit disclosed in the utility model between radio station and tester, including the n key switch being connected respectively with tester, the key switch includes the small switch of N+1 linkage, wherein the 1st small switch of i-th of key switch to non-radio frequencies signaling interface of the small switch of n-th respectively with i-th of radio station is directly connected to；N+1 small switch i-th of RF switching unit of control of i-th of key switch, the radiofrequency signal for switching on or off i-th of radio station；Wherein n >=2,1≤i≤n, N >=1.Signal of the present utility model switches strobe unit, it is to avoid the manual operation link for changing cable one by one, drastically increases testing efficiency.
Description
Technical field
The utility model is related to radio station performance test field, and the signal between more particularly to a kind of radio station and tester is cut
Change strobe unit.
Background technology
Radio station is a kind of to utilize radio wave to carry out speech or data receiver and the communicator of transmission.The work frequency in radio station
Section is generally below microwave frequency band, is specifically divided by working frequency range, there are middle long wave radio station, short-wave radio set, ultrashort wave radio set in radio station.Electricity
Platform is mainly used in several kilometers to thousands of kilometers of telecommunication, and fading channel is very big, therefore broadband is not supported in radio station typically
Communication, is typically only capable to support the data communication service of speech and middle low rate (≤1Mbps).Therefore, the external interface master in radio station
There are antenna opening, audio port, data-interface and control interface.Sometimes, also can be audio port, data in order to reduce interface quantity
Mouth and control mouth are merged into an interface.During test volume radio station, it is necessary to connected measuring system and radio station by these interfaces
Get up, carry out the test of index of correlation.
Forces station has special requirement to reliability, and each radio station will carry out strict aging before dispatching from the factory and survey
Examination.The method of test is that a large amount of radio station are placed in totally enclosed stress case, considerable time in radio station apply temperature,
Inclined etc. various stress conditions are drawn in vibration, supply voltage, and the standard dispatched from the factory is can be only achieved by the radio station of test.Due to each electricity
Platform has several external interfaces to be connected with measuring system, and each interface is required for connecting a cable, therefore the line of stress case
Often draw tens of test cables in cable exit.
This can at least bring three below problem：
(1) in order to avoid cable is obscured, it is necessary to mark the corresponding radio station of every cable；
(2) when testing radio station every time, it is required for finding the cable belonging to current tested radio station in a pile cable.
(3) when carrying out before the test of next radio station, it is necessary to pull out the cable plug in previous radio station from tester, then
Find the corresponding cable in next radio station, the interface reinserted on tester.According to actual observation, measured when progress is large quantities of
During examination, three above problem can seriously reduce testing efficiency.Due to most basic index of the test in aging mainly for radio station,
The test job amount in single radio station is little, therefore the time shared by handoff radio interface is likely to be breached the three of the whole testing time
More than/mono-.
In order to solve the above problems, current method is the numerous test cables correspondence extracted from all tested radio station
Radio station is numbered, it is to avoid obscure.Then the plug of test cable is classified by function, each class plug is inserted into by sequence number
In one plug panel.Above measure can alleviate searching problem for cable plug.In test link, plug socket by hand is still needed to
Changed with the test cable in radio station before and after realizing.
Utility model content
The purpose of this utility model be to overcome the shortcoming and deficiency of prior art there is provided a kind of radio station and tester it
Between signal switching strobe unit, according to the characteristic of radio interface signal, using a series of switch matrix, by simply switching
Operation, just can be quickly connected to tester by the test cable in tested radio station, it is to avoid the manual operation for changing cable one by one
Link, drastically increases testing efficiency.
The purpose of this utility model is realized by following technical scheme：
A kind of signal between radio station and tester switches strobe unit, including n are connected with tester respectively
Key switch, the key switch include N+1 linkage small switch, wherein i-th of key switch it is the 1st small switch extremely
Non-radio frequencies signaling interface of the small switch of n-th respectively with i-th of radio station is directly connected to；The N+1 small of i-th of key switch is opened
Close i-th of RF switching unit of control, the radiofrequency signal for switching on or off i-th of radio station；Wherein n >=2,1≤i≤n, N
≥1。
The non-radio frequencies signal includes audio signal, control signal, data-signal.According to non-radio frequencies signal kinds and frequency
Difference, according to actual demand, N value is set.Current traditional station belongs to narrow band communication, and data volume is little, often
Be controlled using low speed serial ports and data exchange.Audio is analog signal, and frequency is hundreds of hertz and arrived between several KHzs.
Therefore, the gating circuit of non-radio frequencies signal is that can be achieved using the on-off circuit of low frequency.
The metallic cavity of closing is provided with outside the n RF switching unit.Radiofrequency signal is exactly that radio station is conveyed to day
Line and the high-frequency signal that radio station is inputed to from antenna opening, radiofrequency signal gating circuit is using the RF switch matrix of multiselect one
Form.RF switch matrix using closing metallic cavity shielded, into cavity control signal and power supply should use wear
Electrocardio, which holds, to be filtered, and radiofrequency signal is then passed in and out by radio frequency socket.The gating of RF switch is by key switch control.
Signal switching strobe unit between the radio station and tester, in addition to state instruction and conflict protection electricity
Road, automatic protection and alarm are started for indicating whether radio station effectively gates, and when more than two radio station are gated simultaneously
Function.Under normal circumstances, a radio station can only can only once be gated by next key switch.If more than two electricity
What platform was gated simultaneously, then the coherent signal in the radio station gated can short circuit.Particularly when radio station is launched, on radio frequency path
High-power RF signal directly pours into other side radio station, easily causes radio station to be damaged.The defencive function that conflicts is timely in this case
The radio frequency connection in two radio station is disconnected, and is alarmed on the control panel.
The external 50 Ω matched loads of RF switching unit.Only after radio station is strobed, corresponding radiofrequency signal is
It is switched to tester up, so can effectively prevents the radio station that non-present is gated from causing power amplifier to burn because of maloperation.
The switching device of the RF switching unit uses radio-frequency relay.It can ensure that the utility model in accident power-off
In the case of, default conditions can be automatically restored to, the power output in all radio station is all switched on external high power load.If
The switching device set up with PIN pipes as RF switch, under powering-off state, each group of switch is at half conducting state, holds
Easily the power of transmitting station is coupled on other radio station, influence is produced on security.
It is separate between the n key switch, or n key switch composition linked switch.The key of linkage is opened
Close, similar to the shift switch of some fans, that is, when pressing some key switch, the key switch originally pressed can appliance for releasing single
Go out, so only need single stepping with regard to the switching in radio station can be completed.However, in a fairly large number of occasion in radio station, the qin of multichannel linkage
Key switch reliability will be substantially reduced, and be also unfavorable for maintenance and be disassembled, therefore using separate key switch still using connection
Dynamic key switch according to actual conditions, it is necessary to be selected.
A kind of signal switching gating method between radio station and tester, is comprised the steps of：
S1, n key switch be connected with tester respectively, the key switch comprising N+1 link small open
Close, wherein non-radio frequencies signaling interface of the 1st small switch of i-th of key switch to the small switch of n-th respectively with i-th of radio station
It is directly connected to；N+1 small switch i-th of RF switching unit of control of i-th of key switch, for switching on or off i-th
The radiofrequency signal in individual radio station；Wherein n >=2,1≤i≤n, N >=1.
When S2, the performance indications in test l-th radio station, l-th key switch is pressed, N+1 of l-th key switch
Independent small switch closure, the non-radio frequencies signaling interface in l-th radio station is connected with the non-radio frequencies signaling interface of tester, L
The radiofrequency signal interface in individual radio station and the radiofrequency signal orifice of tester；Wherein 1≤L≤n；
When S3, the performance indications in test m-th radio station, according to the difference of key switch, point following two situations：
(1) when separate between n key switch, after the performance indications in l-th radio station have been tested, then click
L-th key switch, the N+1 of l-th key switch it is independent it is small switch off, then press m-th key switch, M
N+1 independent small switch closures of individual key switch, the non-radio frequencies signaling interface and the non-radio frequencies of tester in m-th radio station
Signaling interface is connected, the radiofrequency signal interface in m-th radio station and the radiofrequency signal orifice of tester；Wherein 1≤M≤n；
(2) when n key switch composition linked switch, m-th key switch, the N of m-th key switch are directly pressed
+ 1 independent small switch closure, N+1 independent small switches of l-th key switch disconnect automatically, and the non-of m-th radio station is penetrated
Frequency signaling interface is connected with the non-radio frequencies signaling interface of tester, the radiofrequency signal interface in m-th radio station and tester
Radiofrequency signal orifice；Wherein 1≤M≤n；
S4, repeat step S2 to S3, complete the performance test in n radio station.
The utility model compared with prior art, has the following advantages that and beneficial effect：
1st, the utility model sets up the bridge of a switching between tester and multiple tested radio station, makes each
The relevant interface in tested radio station can be quickly connected on tester by this bridge, while will not be by other electricity
The influence of platform.
2nd, the utility model penetrates the 1st small switch to the small switch of n-th, the non-of radio station of tester, key switch
Frequency signaling interface, collectively constitutes non-radio frequencies signal gating circuit, the performance of the non-radio frequencies signal for testing radio station, such as audio letter
Number, control signal, data-signal.
The utility model believes the radio frequency in tester, N+1 small switches of key switch, radio-frequency relay, radio station
Number interface, collectively constitutes radiofrequency signal gating circuit, the performance of the radiofrequency signal for testing radio station.
Non-radio frequencies signal gating circuit and radiofrequency signal gating circuit collectively constitute signal gating circuit, signal gating circuit
It is core of the present utility model, for the tested radio station of current selected and tester to be connected, i.e. the interface radio station and survey
The interface of test instrument is mapped, while cutting off the connection of other radio station and tester.The core of signal gating circuit is one
Serial multichannel key switch, each key switch has variable connector, often by next key switch, then gates a radio station.
3rd, the utility model realizes the gating function of non-radio frequencies signal, a key switch correspondence using multichannel key switch
One radio station, and each signal wire (non-radio frequencies) that test is participated in radio interface then corresponds to certain of key switch and small all the way opened
Close.The gating of signal is carried out using multichannel key, compared to the switched path constituted using other electronic devices, with circuit shape
Formula is simple, and number of devices is few, the advantages of not introducing extra impedance.In addition, it is noted that key switch is passive device,
The circuit being made up of it does not produce extra electromagnetic interference, than with single-chip microcomputer, semiconducter simulation switch etc. other active device groups
Into switching circuit have obvious advantage.
4th, radio station is when high/low temperature aging and reliability test is done, to a large amount of radio station within the defined time it is quick
Measurement index.Because tester only has a set of, and the quantity in radio station is more, and there are multiple interfaces in each radio station again, changes every time
During tested radio station, manually test cable will be extracted from current tested radio station, then be plugged into the corresponding interface in next radio station.Sternly
Testing efficiency is reduced again, adds manpower and time cost.The country quickly will be by also not when multiple radio station are tested at present
The various interfaces for surveying radio station are switched to the device of tester.The utility model innovatively uses multi-path key switch, undershoot
The switching switch element such as high-power RF relay is damaged, the trouble of artificial plug test cable is eliminated in measurement, realizes fast
The purpose of the tested radio interface of speed switching.Experiment proves that testing efficiency improves more than 30%.
Brief description of the drawings
Fig. 1 switches the structural representation of strobe unit for the signal between a kind of radio station described in the utility model and tester
Figure.
Embodiment
The utility model is described in further detail with reference to embodiment and accompanying drawing, but implementation of the present utility model
Mode not limited to this.
Such as Fig. 1, the signal switching strobe unit between a kind of radio station and tester, according to the spy of radio interface signal
Property, using a series of switch matrix, by simple switching manipulation, just the test cable in tested radio station can be quickly connected to survey
Test instrument, it is to avoid the manual operation link for changing cable one by one, drastically increases testing efficiency.
Effect of the present utility model is to set up a switching between numerous tested radio station between tester
Bridge, making the relevant interface in each tested radio station can be quickly connected on tester by this bridge, simultaneously
It will not be influenceed by other radio station.Theory diagram of the present utility model is as shown in Figure 1.The utility model includes 4 parts：Signal
Gating circuit, socket panel, control panel, state instruction and conflict protection circuit.
First, signal gating circuit is core of the present utility model, for by the tested radio station of current selected and tester
Connect, i.e., the interface in radio station and the interface of tester are mapped, while cutting off the connection of other radio station and tester.
The core of signal gating circuit is a series of multichannel key switch, and each key switch has variable connector, often by next key
Switch, then gate a radio station.
Signal gating circuit is divided to two kinds of radio frequency and non-radio frequencies by characteristics of signals.Radiofrequency signal be exactly radio station be conveyed to antenna with
And the high-frequency signal in radio station is inputed to from antenna opening.The gating circuit of radiofrequency signal uses the shape of the RF switch matrix of multiselect one
Formula.RF switch matrix is shielded using the metallic cavity of closing, and the control signal and power supply into cavity should use punching
Electric capacity is filtered, and radiofrequency signal is then passed in and out by radio frequency socket.The gating of RF switch is by key switch control.
Non-radio frequencies signal includes the signals such as control, data, the audio in radio station.It control and data signal as data signal, mesh
Preceding traditional station belongs to narrow band communication, data volume less, be often controlled using low speed serial ports and data exchange.Audio
For analog signal, frequency is hundreds of hertz and arrived between several KHzs.Therefore, the gating circuit of non-radio frequencies signal opening using low frequency
Powered-down road is that can be achieved.
The utility model realizes the gating function of non-radio frequencies signal, a key switch correspondence one using multichannel key switch
Individual radio station, and each signal wire (non-radio frequencies) that test is participated in radio interface then corresponds to certain of key switch and small all the way opened
Close.The gating of signal is carried out using multichannel key, compared to the switched path constituted using other electronic devices, with circuit shape
Formula is simple, and number of devices is few, the advantages of not introducing extra impedance.In addition, it is noted that key switch is passive device,
The circuit being made up of it does not produce extra electromagnetic interference, than with single-chip microcomputer, semiconducter simulation switch etc. other active device groups
Into switching circuit have obvious advantage.
2nd, socket panel is the structural plane for mounting receptacle as its name suggests.Interface on socket panel be used for connecting from
The test cable that tested radio station is drawn.Panel carries out region division by the interface type in radio station, and same region is placed same
Interface, and each interface is both needed to numbering, to distinguish different radio station.Same radio station is on the utility model socket panel
Total interface is same sequence number.
3rd, control panel is used for the operation for carrying out gating radio station, and carries out some required state instructions.Control panel bag
The button of the key switch containing shape, and the device with various state-indicating functions.
The utility model and the socket of tester connection can be arranged on socket panel or control panel according to actual conditions
On.
4th, state instruction and conflict protection circuit are used to indicate whether radio station effectively gates, and in more than two electricity
Start automatic protection and warning function platform is gated simultaneously when.Under normal circumstances, can only once can only by next key switch
Gate a radio station.If what more than two radio station were gated, the coherent signal in the radio station gated can short circuit simultaneously.Particularly
When radio station is launched, the high-power RF signal on radio frequency path directly pours into other side radio station, easily causes radio station to be damaged.
The defencive function that conflicts disconnects the radio frequency connection in two radio station in time in this case, and is alarmed on the control panel.
In Fig. 1, be successively from left to right above it tester, tested radio station 1, tested radio station 2 ..., tested radio station
n.Tester, tested radio station 1, tested radio station 2 ..., tested radio station n test cable be connected to position as defined in the utility model
Put.Each bar test cable in same radio station must category be connected in the respective socket of the utility model same sequence number, otherwise
Radio station can not set up correct annexation with tester.After some key switch is pressed, it is connected with the key switch
Each signal line in radio station will be corresponded with the interface of tester, radiofrequency signal is also connected to the radio frequency mouthful of tester
On.What deserves to be explained is, in the utility model, the radiofrequency signal default conditions in all radio station are connected to 50 external Ω
On matched load, only after radio station is strobed, corresponding radiofrequency signal is just switched to tester up, so can effectively prevent
Only the radio station of non-present gating causes power amplifier to burn because of maloperation.
In order to further illustrate operation principle of the present utility model, key switch and radio frequency pass unit are done and simply retouched first
State.As shown in figure 1, including the small switch of multichannel independence inside key switch, one-touch action can realize all small switches
State switching.In the utility model, the one small switch in key switch plays a part of being switched on or switched off a signal.
One side of small switch and some tested radio station connection, the another side of small switch connects tester.When small switch conduction, electricity is tested
Platform and that corresponding root signal wire of tester are switched on.According to the non-radio frequencies letter that test is participated in tested radio station test cable
The quantity of number line, it is possible to determine the quantity of small switch in key switch.In addition it is also necessary to many standby switches small all the way, for controlling
RF switch processed.Tester and all key switch have a connection, and a specific radio station is only and a specific qin
Key switch is connected.So, press after some key switch, corresponding radio station will be connected in tester, and non-test
The signal wire in radio station is then isolated with tester completely.
RF switching unit is installed in shielding cavity, and the switching gating of multiselect one is set up to be tested radio station and tester
Function.As shown in figure 1, the radio frequency line of tester and the connection of all radio frequency switch assemblies, and a specific radio station and one
Individual specific radio frequency switch assembly connection.Each radio frequency switch assembly can only realize the break-make of a radiofrequency signal.
Realize that the radio-frequency switch circuit needs of the function of multiselect one are well-designed in RF switching unit, should try one's best reduction distribution
The influence of parameter, makes the return loss of whole unit control in the case where -18dB is with 3, reduces the radio frequency that the utility model is introduced as far as possible
Measurement error caused by mismatch.
Radio-frequency relay is proposed with as the switching device of radio frequency switch assembly, it can be ensured that the utility model is surprisingly disconnected
In the case of electricity, default conditions can be automatically restored to, the power output in all radio station is all switched on external high power load.
If the switching device set up with PIN pipes as RF switch, under powering-off state, each group of switch is at half conducting shape
State, easily makes the power of transmitting station be coupled on other radio station, and influence is produced on security.
When radio station 1 is strobed exemplified by the working condition of each circuit, to describe operation principle of the present utility model in detail.
Initial situation：All key switch are in off-state, from fig 1, it is seen that owning inside the utility model
Equal and tester the dependence test cable of the non-radio frequencies signal in radio station disconnects.The radiofrequency signal in all radio station then presses default conditions
Processing；That is the radiofrequency signal in each radio station is connected in 50 external ohm loads, one load of a radio station correspondence.
After key switch 1 is pressed, the pin per switch two small all the way of the key switch is connected, and is tested radio station 1
All non-radio frequencies signals for participating in test are connected one by one with the corresponding signal wire of tester.Key switch simultaneously also selects radio frequency
Logical triggering level is sent to state instruction and conflict protection circuit up.When not conflicting, RF switching unit 1 will be received
One switch switching signal, radio frequency path and 50 ohm of disconnections, are switched on the radio frequency path of tester.So, tester
Device just establishes correct connection by the utility model and tested radio station 1, radio station 1 can be carried out as testing single radio station
Control and data transfer.
Measure behind radio station 1, to measurement radio station n, then needing to press key switch 1 again makes the institute inside key switch
There is small switch all to disconnect, then press key switch n, radio station is connected in tester.Totally two steps are operated.Also there is the qin of linkage
Key switch, similar to the shift switch of some fans, that is, when pressing some key switch, the key switch originally pressed can be automatic
Ejection, so only needs single stepping with regard to that can complete the switching in radio station.However, in a fairly large number of occasion in radio station, multichannel linkage
Key switch reliability will be substantially reduced, and be also unfavorable for maintenance and disassembled, therefore not use.
If causing more than two key switch to simultaneously turn on accidentally during test, such as key switch 1 and key switch n,
State instruction and conflict protection circuit can recognize that the situation that more than two key switch are simultaneously turned on, and provide police instruction, and
Running through the power supply or switch switching signal of control radio frequency switch assembly makes key switch 1 and key switch n return to acquiescence
State.So, two radio frequency switch assemblies are each switched to onto 50 external ohm loads and gone, and survey will not be connected to simultaneously
On unique radio frequency path of test instrument.So, even if tester performs the firing order in radio station, radio station will not also be caused
1 and radio station n radio frequency path burns.
In summary, the utility model can realize the quick gating function between multiple radio station and tester, and have
The standby rational mechanism solved multiple radio station are gated simultaneously when.The utility model has circuit simple, safe and reliable, Electro Magnetic Compatibility
The advantage such as good.
Above-described embodiment is the utility model preferably embodiment, but embodiment of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, are included within protection domain of the present utility model.
Claims (7)
1. the signal switching strobe unit between a kind of radio station and tester, it is characterised in that：Including n respectively with tester
The key switch that device is connected, the key switch includes the small switch of N+1 linkage, wherein the 1st of i-th of key switch
Small switch to non-radio frequencies signaling interface of the small switch of n-th respectively with i-th of radio station is directly connected to；The N of i-th of key switch
I-th of RF switching unit of+1 small switch control, the radiofrequency signal for switching on or off i-th of radio station；Wherein n >=2,1
≤ i≤n, N >=1.
2. the signal between radio station and tester switches strobe unit according to claim 1, it is characterised in that：It is described non-
Radiofrequency signal includes audio signal, control signal, data-signal.
3. the signal between radio station and tester switches strobe unit according to claim 1, it is characterised in that：The n
The metallic cavity of closing is provided with outside individual RF switching unit.
4. the signal between radio station and tester switches strobe unit according to claim 1, it is characterised in that：Also include
State instruction and conflict protection circuit, are gated simultaneously for indicating whether radio station effectively gates, and in more than two radio station
Shi Qidong automatic protections and warning function.
5. the signal between radio station and tester switches strobe unit according to claim 1, it is characterised in that：It is described to penetrate
The external 50 Ω matched loads of frequency switch element.
6. the signal between radio station and tester switches strobe unit according to claim 1, it is characterised in that：It is described to penetrate
The switching device of frequency switch element uses radio-frequency relay.
7. the signal between radio station and tester switches strobe unit according to claim 1, it is characterised in that：The n
It is separate between individual key switch, or n key switch composition linked switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720142633.5U CN206517419U (en) | 2017-02-17 | 2017-02-17 | A kind of signal switching strobe unit between radio station and tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720142633.5U CN206517419U (en) | 2017-02-17 | 2017-02-17 | A kind of signal switching strobe unit between radio station and tester |
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| Publication Number | Publication Date |
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| CN206517419U true CN206517419U (en) | 2017-09-22 |
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ID=59867627
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| CN201720142633.5U Active CN206517419U (en) | 2017-02-17 | 2017-02-17 | A kind of signal switching strobe unit between radio station and tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685544A (en) * | 2017-02-17 | 2017-05-17 | 广州海格通信集团股份有限公司 | Signal switch gating device and method between broadcasting stations and test instruments |
-
2017
- 2017-02-17 CN CN201720142633.5U patent/CN206517419U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685544A (en) * | 2017-02-17 | 2017-05-17 | 广州海格通信集团股份有限公司 | Signal switch gating device and method between broadcasting stations and test instruments |
| CN106685544B (en) * | 2017-02-17 | 2022-12-06 | 广州海格通信集团股份有限公司 | Signal switching gating method between radio station and test instrument |
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