CN209400619U - Universal link switching device - Google Patents
Universal link switching device Download PDFInfo
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- CN209400619U CN209400619U CN201821858373.2U CN201821858373U CN209400619U CN 209400619 U CN209400619 U CN 209400619U CN 201821858373 U CN201821858373 U CN 201821858373U CN 209400619 U CN209400619 U CN 209400619U
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- switching device
- universal link
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Abstract
The utility model provides a kind of universal link switching device, including a channel z (z >=2), the z chain of relays, drive module, common end；Each channel connects a chain of relays, and each channel is all connected with common end, and common end is connected to the cable interface of testboard；The z chain of relays in parallel is connected to drive module, 2 serial communication interfaces of drive module setting, and 1 serial communication interface connects testboard, another is used for online with other universal link switching devices.1 set of test equipment can be realized using this programme while connecting z set tested products, the efficiency of the environmental acceptances such as military electronic product temperature cycles test is substantially increased, realize versatility, the scalability of universal link switching device.
Description
Technical field
The utility model belongs to universal test techniques field, and in particular to a kind of universal link switching device.
Background technique
Military electronic, electric product will be by the environmental acceptances experiment examinations such as temperature cycles, during test before delivering
Product will generally be powered test, need before the test to connect tested electronics, electric product and test macro using test cable
It picks up and, then carry out environmental test according still further to regulation process.
Under normal circumstances, 1 set of test macro can only connect 1 tested products during test, limit every secondary environment examination
The quantity of tested products is tested, when tested products quantity is more, test period and test resource occupation time is necessarily caused to extend.With
For temperature cycling test during environmental stress screening, test needs 40 hours every time, if batch production quantity is 100 sets of productions
Product, then only in temperature cycling test link, total time-consuming is not only serious to restrict batch production efficiency up to 4000 hours, but also accounts for for a long time
With valuable test resource, product testing cost is increased.
In order to solve the problems, such as that test efficiency is low, there are mainly three types of schemes at present:
Scheme 1: increase test equipment quantity.The disadvantage is that at high cost, occupied space is big, is not easy to be unfolded in narrow laboratory
It uses.
Scheme 2: a set of survey during test is realized with the method for expanding the hardware resources such as test equipment data collecting card
Try the purpose that equipment tests more set products simultaneously.The disadvantage is that test equipment development difficulty is big, higher cost, and be not easy to extend.
Scheme 3: circuit switching device is used.By increasing circuit switching device between test equipment and test product
Method realizes the purpose of a set of equipment while the more set products of connection, its advantage is that the hardware resources such as test equipment data collecting plate card
Without expanding, only need to control switching device can realize the timesharing switch test of multi-product.
Existing switching device is developed together with test equipment mostly, and number of channels is true according to test product needs
Fixed, the disadvantage is that number of channels cannot extend, different test products generally cannot be general.
Summary of the invention
It cannot be extended for switching device number of channels existing in the prior art, technical problem that cannot be general, this reality
A kind of universal link switching device is provided with novel, by optimization switching circuit types, increases the measures such as communication interface, realizes
Scalability, the versatility of universal link switching device.
The technical scheme in the invention for solving the above technical problem is as follows:
A kind of universal link switching device, including a channel z (z >=2), the z chain of relays, drive module, common end；Institute
It states each channel and connects a chain of relays, and each channel is all connected with common end, the cable of the common end connection testboard
Interface；The z chain of relays in parallel is connected to drive module, and 2 serial communication interfaces of the drive module setting, 1 serial logical
Communication interface connects testboard, another is used for online with other universal link switching devices.
Further, each channel includes q (q >=276) route, and wherein p (p >=20) route is directly connected to public
End, remaining m (m=q-p) route include n (n >=20) to differential signal line and the road m-2n normal signal line, and every line is arranged one
Relay；Each chain of relays is made of m relay in parallel.
Further, the drive module includes single-chip microcontroller, the z group photoelectrical coupler of decoder and parallel connection and three poles
Pipe, the single-chip microcontroller are used to receive the switching command code of testboard sending and output this to decoder, and the decoder is used for
It compiles switching command code and exports to one group of photoelectrical coupler and triode, every group of photoelectrical coupler and triode control driving one
All relay coils in a chain of relays.
Further, the relay is the double-pole micro electromagnetic relay of contact change-over.
Further, the z is 5.
Further, the universal link switching device is using process control switching and manual switching.
Further, the universal link switching device single machine is arranged in 5U standard PC case.
The utility model compared with prior art the utility model has the advantages that
The universal link switching device of the utility model switches circuit types by optimization, increases the measures such as communication interface,
Realize versatility, the scalability of universal link switching device.1 set of test equipment can be achieved and connect more set tested products simultaneously,
Substantially increase the efficiency of the environmental acceptances such as military electronic product temperature cycles test.
In addition, the utility model uses the double-pole micro electromagnetic relay of contact change-over mode, and it is small in size, it is light-weight, and
Contact contact resistance is small, and conversion line impedance is low.Using standard PC case, it is mountable in any standard industrial control cabinet, facilitates electricity
The selection of sub- product testing equipment.
Detailed description of the invention
Included attached drawing is used to provide to be further understood from the utility model embodiment, and which constitute specifications
A part for illustrating the embodiments of the present invention, and comes together to illustrate the principles of the present invention with verbal description.It is aobvious and
Easy insight, the drawings in the following description are merely some embodiments of the present invention, and those of ordinary skill in the art are come
It says, without creative efforts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 shows the system composition schematic diagram of universal link switching device in the utility model embodiment；
Fig. 2 shows driving device structure schematic diagrames in the utility model embodiment；
Fig. 3 shows universal link switching device single machine figure (front panel) in the utility model embodiment；
Fig. 4 shows universal link switching device single machine figure (rear panel) in the utility model embodiment.
Wherein, the above drawings include the following reference numerals:
TD1~TD5 is 5 channels；JDQ1~JDQ5 is 5 chains of relays；QD1 is drive module；PUB is common end；
COM1, COM2 are 2 serial communication interfaces；COM is the serial communication interface of monitoring and control unit；CS is the cable interface of monitoring and control unit；D1
~D5 is photoelectrical coupler；S1~S5 is triode.
Specific embodiment
Specific embodiment of the utility model is described in detail below.In the following description, for explain rather than
Restrictive purpose, elaborates detail, to help to be apparent from the utility model.However, to those skilled in the art
For it is readily apparent that the utility model can also be practiced in the other embodiments departing from these details.
As shown in Figure 1, a kind of universal link switching device of the utility model includes z (z >=2) a channel, it is complete that z covers circuit
The identical chain of relays, drive module QD1, common end PUB, 2 serial communication interfaces COM1, COM2.Each channel connection one
A chain of relays, and each channel is all connected with common end, common end is used to be connected to the cable interface CS of testboard.Z it is in parallel after
Electrical appliance group is connected to drive module, 2 serial communication interfaces of drive module setting, and 1 serial communication interface connects testboard, separately
One for other more universal link switching devices it is online, realize each universal link switching device channel line number expand
Exhibition.
In above-mentioned universal link switching device, each channel includes q (q >=276) route, wherein being containing p (p >=20) route
Do not switch, high current access, be directly connected to common end, purposes is to meet the simultaneously powered up demand of tested products；Remaining m (m=q-p)
Route includes n (n >=20) to differential signal line and the road m-2n normal signal line, and a relay is arranged in every line of m route.
In above-mentioned universal link switching device, each chain of relays is made of m relay in parallel, m relay coil
Drive positive and negative in parallel respectively, simultaneously operation.
In above-mentioned universal link switching device, drive module is for switching the z chain of relays, as shown in Figure 2 comprising single
The z group photoelectrical coupler and triode of piece machine, decoder and parallel connection, the switching that single-chip microcontroller is used to receive testboard sending refer to
It enables code and outputs this to decoder, decoder is for compiling switching command code and exporting to one group of photoelectrical coupler and three poles
Pipe, every group of photoelectrical coupler and triode control drive all relay coils in a chain of relays.Pass through monitoring and control unit
After switching command code is sent the single-chip microcontroller of drive module by RS232 serial communication interface, it is transformed into and z is covered in the chain of relays only
One some chain of relays goes code, while guaranteeing that other chains of relays disconnect；Go code makes the relay after driving
The relay switch of device group is all turned on, to realize the connection of respective lines.
In order to become apparent from elaboration the utility model, it is illustrated below with reference to one embodiment.
In the present embodiment, universal link switching device includes 5 changeable channel TD1~TD5,5 chain of relays JDQ1
~JDQ5, the chain of relays use the G6S-2F type double-pole micro electromagnetic relay of OMRON company, and drive module uses
AT89C4051 single-chip microcontroller, 74HC138 decoder, TPL521-4 photoelectrical coupler and 8050 triodes, monitoring and control unit use
The serial com port of RS232.
The universal link switching device the key technical indexes:
(a) port number and route number: having 5 changeable channel TD1~TD5, and each channel has 276 routes, wherein
Do not switch containing 20 routes, high current access, purposes is to meet the simultaneously powered up demand of tested products.
(b) route allows electric current: in 276 routes in every channel, 256 routes are 2A, and it is miniature that a double-pole is arranged in every route
Electromagnetic relay, wherein containing 20 pairs of differential signal lines；Another 20 route be 3A, for do not switch, high current access.5 channels are not
Switching, the connection of high current access.
(c) line impedance: each access line impedance < 1 Ω.
(d) switching control mode: can process control switching, can also manual switching.
(e) online extension function: there are two serial communication interface COM1, COM2, COM1 for every universal link switching device
Connecting test platform host computer, COM2 is online for more universal link switching devices, realizes the logical of universal link switching device
The extension of road line number.
(f) normal structure form: every universal link switching device single machine is 5U standard PC case, can be placed in standard industrial control
Cabinet.
Appearance is as shown in Figure 3,4, and front panel is provided with 5 channel switching control switches, channel disconnects switch, power supply is opened
Pass, channel indicator light, power supply indicator, insurance, axial flow blower etc., for the ease of it is online when observe, can also plate mark in front
Infuse each switching device label.
Rear panel is provided with common end socket, 5 channel sockets, power supply, dual serial communication interface etc..Wherein, public
End socket XT1 is connected to the X1 in 5 channels, is 20 lines not switched path；Remaining XT2, XT3 and X2, X3 socket in 5 channels are matched
Set 256 line switching channels.
Above-mentioned universal link switching device process for using is as follows:
Cable connection testboard is to switching device common end → cable connection switching device and 5 tested military electronic products
→ TD1 connection product test in channel → switches to channel TD2 → channel TD2 connection product test → and switches to channel TD3 → logical
Road TD3 connection product test → switch to channel TD4 → channel TD4 connection product test → switches to channel TD5 → channel TD5
Connection product test → test terminates.
Switching action in above-mentioned process can be realized by testboard plug-in, can also pass through circuit switching device
Button switch on front panel is realized.
The utility model universal link switching device have conversion line Low ESR, can online extended channel, versatility it is good
Etc. functions.
(1) in order to guarantee that the Low ESR of ALT-CH alternate channel, universal link switch line relay using contact change-over mode
Double-pole micro electromagnetic relay, it is small in size, it is light-weight, and contact current, up to 2A, contact contact resistance is less than 0.05 Ω, switching
Quickly (to the transmission state time is stablized no more than 0.05s) after switching command sending, it can satisfy most of electronics, electric product
Test request signal transmission.
(2) the online extension function of universal link switching device is to connect two identical switching devices by communication cable
Serial communication interface COM2 realizes the extension of switching channel, meets the use needs of route more products.
In above-described embodiment, if tested electronic product p-wire number has been more than 276 tunnels, this can be covered with two sets or mostly
Circuit switching device on-line mode realizes the extension of measurement circuit, is connected between circuit switching device single machine using serial communication cable
It connects.
(3) universal link switching device structurally and functionally considers versatility.By above-mentioned general line in structure
Circuit switching device is arranged in standard 5U cabinet, is mountable in any standard industrial control cabinet, facilitates electronic product test equipment
It selects；The functionally built-in automatic switching program i.e. in testing board system program, also on standard 5U case front panel
Provided with button switch, can automatic programme control switch also manual switching, enhance the flexibility used.
When switching using program controlled automatic, one can be realized by changeover program source code Embedded test platform test macro program
A program not only controls test but also control channel switches, and keeps entire testing process more coherent, cumbersome behaviour is not necessarily in test process
Make.When manual switching, without considering programming problem, need to control switching time at any time according to test site, use is more flexible.
Internal wiring setting has also contemplated versatility requirement, has both considered the larger problem of power supply line's electric current, it is also considered that
The anti-interference transmission of differential intermediate frequency needs, it is also contemplated that and part does not need to switch, and is constantly in the circuit needs of connection,
Test product needs simultaneously powered up during test, needs this circuit.216 tunnel of general signal line in embodiment, difference letter
Number line 20 is right, and 3A does not switch 20 tunnel of route, can be applicable in the test of Most electronic product.
The foregoing is merely section Examples of the invention, are not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Unspecified part of the present invention is known to the skilled person technology.
Claims (7)
1. a kind of universal link switching device, which is characterized in that including z channel, the z chain of relays, drive module, public
It holds, wherein z >=2；Each channel connects a chain of relays, and each channel is all connected with common end, and the common end connects
The cable interface of logical testboard；The z chain of relays in parallel is connected to drive module, 2 serial communications of the drive module setting
Interface, 1 serial communication interface connect testboard, another is used for online with other universal link switching devices.
2. universal link switching device according to claim 1, which is characterized in that each channel includes q route,
Middle p route is directly connected to common end, remaining m route includes n to differential signal line and the road m-2n normal signal line, every line setting
One relay, wherein q >=276, p >=20, m=q-p, n >=20；Each chain of relays is made of m relay in parallel.
3. universal link switching device according to claim 2, which is characterized in that the drive module include single-chip microcontroller,
Decoder and the z group photoelectrical coupler and triode of parallel connection, the single-chip microcontroller are used to receive the switching command of testboard sending
Code simultaneously outputs this to decoder, and the decoder is for compiling switching command code and exporting to one group of photoelectrical coupler and three poles
Pipe, every group of photoelectrical coupler and triode control drive all relay coils in a chain of relays.
4. universal link switching device according to claim 3, which is characterized in that the relay is the double of contact change-over
Knife micro electromagnetic relay.
5. universal link switching device according to claim 3, which is characterized in that the z is 5.
6. universal link switching device according to claim 3, which is characterized in that the universal link switching device uses
Process control switching and manual switching.
7. universal link switching device according to claim 3, which is characterized in that the universal link switching device single machine
It is arranged in 5U standard PC case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821858373.2U CN209400619U (en) | 2018-11-12 | 2018-11-12 | Universal link switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821858373.2U CN209400619U (en) | 2018-11-12 | 2018-11-12 | Universal link switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209400619U true CN209400619U (en) | 2019-09-17 |
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ID=67879669
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821858373.2U Active CN209400619U (en) | 2018-11-12 | 2018-11-12 | Universal link switching device |
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| Country | Link |
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| CN (1) | CN209400619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067919A (en) * | 2020-07-28 | 2020-12-11 | 北京机电工程研究所 | Automatic cable type identification device and automatic test method |
-
2018
- 2018-11-12 CN CN201821858373.2U patent/CN209400619U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067919A (en) * | 2020-07-28 | 2020-12-11 | 北京机电工程研究所 | Automatic cable type identification device and automatic test method |
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