CN206470367U - A kind of test equipment for relay - Google Patents
A kind of test equipment for relay Download PDFInfo
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- CN206470367U CN206470367U CN201620877368.0U CN201620877368U CN206470367U CN 206470367 U CN206470367 U CN 206470367U CN 201620877368 U CN201620877368 U CN 201620877368U CN 206470367 U CN206470367 U CN 206470367U
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Abstract
The utility model is related to a kind of test equipment for relay, including relay contact analog control system motherboard circuit and MCU units, the input of the relay contact analog control system motherboard circuit is connected with the output end of power subsystem, the output end of the relay contact analog control system motherboard circuit is connected with the input of extension/drive circuit, the input of the relay contact analog control system motherboard circuit is connected with the output end of the compatible tool of test, the output end of the relay contact analog control system motherboard circuit is connected with the input of MCU units, the input of the MCU units also with power subsystem, the output end of extension/drive circuit and the compatible tool of test is connected, the output end of the MCU units is connected with the input of host computer.The utility model can effectively reduce application cost by detection, help to shorten test period, reduce testing cost.
Description
Technical field
The utility model is related to a kind of test equipment, more particularly to a kind of test equipment for relay, belongs to and partly leads
Body field.
Background technology
Generally in semiconductor applications, the cost of a chips has focused largely on the pressure that semiconductor test is brought.
In semiconductor test, have on the interface card that substantial amounts of relay application is tested to FT and CP.For cutting
Change TCH test channel, the various functions such as adjustment circuit.And the quality of relay, the quality of test and the effect of test can be directly affected
Rate.So, required basic detection during in order to test, it is essential to develop a relay test set, is used for
The defective products of relay needed for excluding.Reduce caused testing cost therefrom.
In view of above-mentioned defect, the design people is actively subject to research and innovation, to found a kind of being used for for new structure
The test equipment of relay, makes it with more the value in industry.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of test equipment for relay.
To achieve the above object, the utility model is adopted the following technical scheme that：
A kind of test equipment for relay, including relay contact analog control system motherboard circuit and MCU units, the relay are surveyed
The input of examination motherboard circuit is connected with the output end of power subsystem, the output end of the relay contact analog control system motherboard circuit and expansion
The input of exhibition/drive circuit is connected, the input of the relay contact analog control system motherboard circuit and the output end of the compatible tool of test
It is connected, the output end of the relay contact analog control system motherboard circuit is connected with the input of MCU units, the input of the MCU units
Also be connected with the output end of power subsystem, extension/drive circuit and the compatible tool of test, the output end of the MCU units with it is upper
The input of position machine is connected.
Further, the described test equipment for relay, wherein, the extension/drive circuit is
74HC373 drive circuits, or be 74HC238IO expanded circuits.
Again further, the described test equipment for relay, wherein, the compatible tool of test is compatibility
The tool of PCB interfaces/insertion slot type.
Again further, the described test equipment for relay, wherein, the relay contact analog control system motherboard circuit with
Transmission line is connected between test product.
Again further, the described test equipment for relay, wherein, the transmission line is provided with delay time T,
Its formula is as follows：
Wherein, L：The overall length of transmission line；
C：The light velocity 3 × 108m/s；
ε：The dielectric constant of PCB media.
Again further, the described test equipment for relay, wherein, in addition to over-current protecting unit, it is described
Over-current protecting unit is connected with relay contact analog control system motherboard circuit.
By such scheme, the utility model at least has advantages below：
1) storage relay is detected, excludes unqualified relay, it is to avoid unqualified relay is to subsequent product
Function and malfunction elimination cause direct or indirect influence, reduce application cost.
2) when help tester solves test, to the malfunction elimination of relay, the workload of tester is alleviated,
Help to shorten test period, reduce testing cost.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of relay contact analog control system motherboard circuit.
Embodiment
With reference to the accompanying drawings and examples, embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.
In order that those skilled in the art more fully understand the utility model scheme, it is real below in conjunction with the utility model
Accompanying drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described reality
It is only a part of embodiment of the utility model to apply example, rather than whole embodiments.Generally described in accompanying drawing and show here
The component of the utility model embodiment gone out can be arranged and designed with a variety of configurations.Therefore, below in accompanying drawing
The detailed description of the embodiment of the present utility model of middle offer is not intended to limit claimed scope of the present utility model, and
It is to be merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, those skilled in the art are not having
The every other embodiment obtained on the premise of making creative work, belongs to the scope of the utility model protection.
Embodiment
As shown in figure 1, a kind of test equipment for relay, including relay contact analog control system motherboard circuit 1 and MCU units
2, the input of the relay contact analog control system motherboard circuit 1 is connected with the output end of power subsystem 3, the relay contact analog control system mainboard electricity
The output end on road 1 is connected with the input of extension/drive circuit 4, the input of the relay contact analog control system motherboard circuit 1 and test
The output end of compatible tool 5 is connected, and the output end of the relay contact analog control system motherboard circuit 1 is connected with the input of MCU units 2,
The output end of the input of the MCU units 2 tool 5 also compatible with power subsystem 3, extension/drive circuit 4 and test is connected,
The output end of the MCU units 2 is connected with the input of upper 6 machine.Pass through MCU units and relay contact analog control system motherboard circuit
The detection of the automation to relay can be realized by coordinating, it is ensured that the yield of the relay used, so as to reduce application cost and survey
Try cost.
As shown in Fig. 2 relay contact analog control system motherboard circuit described in the utility model includes relay chip, the relay
First pin of chip is connected with DC5V, and the negative electrode also with diode D33 is connected, diode D33 anode and relay
8th pin of chip is connected, external first signal terminal of the 8th pin of relay chip, and the of the relay chip
Two pins are connected with diode D32 anode, and the D32 of diode negative electrode is grounded by resistance R41, and the second of relay chip
The external secondary signal terminals of pin, external 3rd signal terminal of the 3rd pin of the relay chip, the relay
4th pin of chip is connected with diode D34 anode, and the negative electrode of the diode D34 is grounded by resistance R42, and relay
External 4th signal terminal of the 4th pin of device chip, the 5th pin of the relay chip and diode D36 anode
It is connected, diode D36 negative electrode is grounded by resistance R44, external 5th signal terminal of the 5th pin of relay chip, institute
State external 6th signal terminal of the 6th pin of relay chip, the 7th pin of the relay and diode D35 sun
Extremely it is connected, diode D35 negative electrode is grounded by resistance 43, and the external 7th signal wiring of the 7th pin of relay chip
End.The quality of relay can be detected by the device, so that it is guaranteed that being used using the normal of relay.
Diode D32 described in the utility model, diode D34, diode D35, diode D36 are light-emitting diodes
Which in relay pipe, can effectively watch go wrong, facilitate the maintenance in later stage using light emitting diode, make it weight
Multiple to utilize, making up to reduces the purpose of cost.
Extension/drive circuit 4 described in the utility model is 74HC373 drive circuits, or extends electricity for 74HC238IO
Road, extension/drive circuit can be passed through using extension/drive circuit 4 when not enough connecing occurs in relay contact analog control system motherboard circuit
4 pairs of its I/O ports expand, and make up to reasonable demand.
The tool that compatible tool 5 is compatibility PCB interfaces/insertion slot type is tested described in the utility model in addition, due to not
Incompatible possibility is deposited in the pin position of same relay and encapsulation, in order to the relay of compatible producers as many as possible, design
The tool of one compatibility PCB interfaces/insertion slot type, come the tool of the pin position that reaches compatible different relay, reduce its use it is different
Test device, so as to reduce use cost.
For above-mentioned tool, for the relay using paster, it is possible to use only the tool of insertion slot type, pass through insertion slot type
Tool be connected with relay contact analog control system motherboard circuit, so as to meet the convenience of test.But also it is easy to disassemble, easy to operate, it is most main
What is wanted is the precision that can be controlled on delay test.
And for the relay of PCB interfaces, there is interface daughter board, measured relay is arranged on interface daughter board, daughter board tool
Standby corresponding signaling transfer point, allow measured relay pin position and the pin non-colinear position of mainboard, to realize testing requirement.
Transmission line is connected between relay contact analog control system motherboard circuit and test product described in above-mentioned wiring, and it is described
Transmission line is provided with delay time T, and its formula is as follows：
Wherein, L：The overall length of transmission line；
C：The light velocity 3 × 108m/s；
ε：The dielectric constant of PCB media.
In actual test, due to test the delay of relay, due to relay contact analog control system, it is necessary to use
Transmission line, and can produce certain delay time T using transmission line, general delay time delay is or even the meeting in nanosecond rank
Smaller, the relay delay accuracy in order to ensure detecting can just obtain accurate, it is necessary to the delay to transmission line is controlled by
Result.
Operation principle of the present utility model is as follows：
Power subsystem passes through test as the electric supply installation of relay contact analog control system motherboard circuit in relay contact analog control system motherboard circuit
Relay is connected with relay contact analog control system motherboard circuit in the presence of compatible tool, the instruction transmitted by MCU units is to relay
The circuit carried in device test flap circuit carries out automatic detection, the break-make of circuitry self test relay and delay to relay, and
The data hair tested out by relay contact analog control system motherboard circuit feeds back to MCU units again, the data finally fed back to by MCU units
Send the good or bad situation for allowing tester to be apparent from the relay into host computer.
For the personal safety of tester in the utility model, over-current protecting unit with the addition of.When electric current is more than 2A
General supply can disconnect, and the software being equipped with also has equipment self-inspection function, and after the power-up, equipment can carry out self-inspection first, really
Whether normal recognize state, then can just operate.Intuitively LED, which is had, in test, on device panel carrys out display device
State.
The utility model at least has advantages below：
1) storage relay is detected, excludes unqualified relay, it is to avoid unqualified relay is to subsequent product
Function and malfunction elimination cause direct or indirect influence, reduce application cost.
2) when help tester solves test, to the malfunction elimination of relay, the workload of tester is alleviated,
Help to shorten test period, reduce testing cost.
Described above is only preferred embodiment of the present utility model, is not limited to the utility model, it is noted that
For those skilled in the art, on the premise of the utility model technical principle is not departed from, it can also do
Go out some improvement and modification, these improvement and modification also should be regarded as protection domain of the present utility model.
Claims (6)
1. a kind of test equipment for relay, it is characterised in that：Including relay contact analog control system motherboard circuit and MCU units, institute
The input of relay contact analog control system motherboard circuit is stated with the output end of power subsystem to be connected, the relay contact analog control system motherboard circuit it is defeated
Go out end with the input of extension/drive circuit to be connected, input and the compatible tool of test of the relay contact analog control system motherboard circuit
Output end be connected, the output end of the relay contact analog control system motherboard circuit is connected with the input of MCU units, the MCU units
Input be also connected with the output end of power subsystem, extension/drive circuit and the compatible tool of test, the MCU units it is defeated
Go out end with the input of host computer to be connected.
2. the test equipment according to claim 1 for relay, it is characterised in that：Extension/the drive circuit is
74HC373 drive circuits, or be 74HC238IO expanded circuits.
3. the test equipment according to claim 1 for relay, it is characterised in that：The compatible tool of test is simultaneous
Hold the tool of PCB interfaces/insertion slot type.
4. the test equipment according to claim 1 for relay, it is characterised in that：The relay contact analog control system mainboard electricity
Transmission line is connected between road and test product.
5. the test equipment according to claim 4 for relay, it is characterised in that：When the transmission line is provided with delay
Between T, its formula is as follows：
Wherein, L：The overall length of transmission line；
C：The light velocity 3 × 108m/s；
ε：The dielectric constant of PCB media.
6. the test equipment for relay according to any one in claim 1 to 5, it is characterised in that：Also wrap
Over-current protecting unit is included, the over-current protecting unit is connected with relay contact analog control system motherboard circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877368.0U CN206470367U (en) | 2016-08-15 | 2016-08-15 | A kind of test equipment for relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877368.0U CN206470367U (en) | 2016-08-15 | 2016-08-15 | A kind of test equipment for relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206470367U true CN206470367U (en) | 2017-09-05 |
Family
ID=59709672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620877368.0U Active CN206470367U (en) | 2016-08-15 | 2016-08-15 | A kind of test equipment for relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206470367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226691A (en) * | 2016-08-15 | 2016-12-14 | 苏州韬盛电子科技有限公司 | A kind of test equipment for relay |
-
2016
- 2016-08-15 CN CN201620877368.0U patent/CN206470367U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226691A (en) * | 2016-08-15 | 2016-12-14 | 苏州韬盛电子科技有限公司 | A kind of test equipment for relay |
| CN106226691B (en) * | 2016-08-15 | 2023-03-21 | 苏州韬盛电子科技有限公司 | Test equipment for relay |
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