CN106374973B - 485 communication buses test switching device - Google Patents
485 communication buses test switching device Download PDFInfo
- Publication number
- CN106374973B CN106374973B CN201610996010.4A CN201610996010A CN106374973B CN 106374973 B CN106374973 B CN 106374973B CN 201610996010 A CN201610996010 A CN 201610996010A CN 106374973 B CN106374973 B CN 106374973B
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- CN
- China
- Prior art keywords
- contact
- pcb board
- binding post
- connecting terminal
- static
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The present invention relates to a kind of test devices, and specially 485 communication buses test switching device, including a pair of of contact, pcb board and shell, contact include static contact and moving contact；There is moving contact below the contact of static contact；Moving contact includes the movable contact of upper end, connects binding post below movable contact；Binding post, which is located above pcb board, spring, binding post, which is located at below pcb board, buckle, there is instrument connection on the shell, two static contacts are connect with connecting terminal A, connecting terminal B respectively, and connecting terminal A, connecting terminal B are connected on A, B line of 485 communication buses；The binding post of two moving contacts is connect with MCU respectively.The device improves the working efficiency of local communication test, troubleshooting, and improves the operational safety of operator, reduces on-site maintenance cost, it is not necessary to consider the operating status of field device.
Description
Technical field
The present invention relates to a kind of test device, specially 485 communication buses test switching device.
Background technique
Connection A, B be 485 buses, 485 communication bus connection types substantially in a manner of handing in hand based on, need to diagnose
When device talk situation in 485 buses, it is necessary to will first be removed on 485 bus slaves, cause other equipment normal
Communication.Such as Fig. 1, the instrument and meter with 485 communication functions and other facilities are set according to the method for Fig. 1 on the market at present
Meter.MCU processor is the main control unit that instrument and meter and other facilities are used to handle 485 communications, passes through connecting terminal A, wiring
Terminal B is directly connected with 485 buses A, B, achievees the purpose that communication.When Communication diagnostic, it is necessary to by 485 buses A, B from wiring
It is removed on terminal, allows the access between 485 bus A, B and MCU to disconnect, while diagnosis communication line being connected on connecting terminal, allow
Access is formed between diagnosis communication line and MCU, achievees the purpose that diagnosis.
Such as Fig. 2, detection first removes the communication on terminal A, terminal B when communicating on-off with 485 communication function devices
Bus causes other devices communication in bus to stop, and connects relatively complicated, larger workload of tearing connection open.General communication terminal
For son near high pressure, hot line job is dangerous, and assembly and disassembly need to disconnect general supply, influences the normal work of live other equipment.Mesh
It is preceding not have also better solution quick 485 diagnosis in the market.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of 485 communication buses test switching device, improves detection efficiency.
Specific technical solution are as follows:
485 communication buses test switching device, including a pair of of contact, pcb board and shell, the contact include static contact
And moving contact；There is the stationary contact of bending in the upper end of the static contact, forms inverted L shape, and the static contact lower end is fixed
On pcb board；There is moving contact below the stationary contact of static contact；The moving contact includes the movable contact of upper end, is divided below movable contact
It Lian Jie not guide rod and binding post；There are two perforation respectively on the pcb board, and a perforation is for wearing guide rod, and in addition one
A perforation is for wearing binding post；The part that the binding post is located above pcb board is wound with spring, moves under the elastic force of spring
Contact and stationary contact point contact, the section below that binding post is located at pcb board are provided with buckle, fall off from pcb board to prevent binding post；
A pair of of contact, pcb board are mounted in shell；There are instrument connection, the test hole site and dynamic touching on the shell
Head is corresponding；After the testing needle of test equipment is inserted into instrument connection, moving contact is pushed and is separated with static contact；
Static contact described in two is connect with connecting terminal A, connecting terminal B respectively, connecting terminal A, connecting terminal B difference
It is connected on A, B line of 485 communication buses；
The binding post of moving contact described in two is connect with MCU respectively.
485 communication bus provided by the invention tests switching device, improves the working efficiency of 485 communication buses diagnosis, no
Necessity disconnects 485 buses and influences other settings and work normally；Entire 485 communication bus diagnosis process safety is reliable, operator
Member does not need assembly and disassembly connection and thus bring operational hazards, and can quickly find abort situation, without influencing bus
On remaining instrument and meter and other facilities normal work.
Detailed description of the invention
Fig. 1 is the mode of connection of the prior art 485 communication bus and MCU；
Fig. 2 is the method that the prior art tests 485 communication buses；
Fig. 3 is structural schematic diagram of the invention；
Fig. 4 is 485 communication buses test switching device and the mode of connection with MCU of the invention；
Status diagram when Fig. 5 is test of the invention.
Specific embodiment
A specific embodiment of the invention is described with reference to the drawings.
As shown in figure 3,485 communication buses test switching device, including a pair of of contact, pcb board 5 and shell 1, it is described
Contact includes static contact 3 and moving contact；There is the stationary contact 9 of bending in the upper end of the static contact 3, forms inverted L shape, institute
On the fixed pcb board 5 in 3 lower end of static contact stated；It is moving contact below the stationary contact 9 of static contact 3；The moving contact includes upper
The movable contact 8 at end is separately connected guide rod 6 and binding post 4 below movable contact 8；On the pcb board 5 respectively there are two perforation,
One perforation is for wearing guide rod 6, another perforation is for wearing binding post 4；The binding post 4 is located at 5 top of pcb board
Part is wound with spring 7, and movable contact 8 is contacted with stationary contact 9 under the elastic force of spring 7, and binding post 4 is located at the lower section of PCB plate 5
Part is provided with buckle, falls off from pcb board 5 to prevent binding post 4；A pair of of contact, pcb board 5 are mounted in shell 1；
There is instrument connection 2 on the shell 1,2 position of instrument connection is corresponding with moving contact；The testing needle 10 of test equipment is inserted into
After instrument connection 2, movable contact 8 is pushed and is separated with static contact 3；
Static contact 3 described in two is connect with connecting terminal A, connecting terminal B respectively, and connecting terminal A, connecting terminal B points
It is not connected on A, B line of 485 communication buses；
The binding post 4 of moving contact described in two is connect with MCU respectively.
As shown in figure 4, connecting the test switching device between connecting terminal A, connecting terminal B and CPU processor, work as survey
Test point 10 from instrument connection 2 be inserted into, device cut off MCU and 485 communication bus A, B connection, be also turned on diagnosis communication line and
Connection between MCU, achievees the purpose that diagnosis.
Under normal condition, the static contact 3 of the device is connected to connecting terminal A, connecting terminal B, and moving contact is connected to MCU.
When motor protector is connected on 485 communication bus A, B, 485 communication bus connecting terminal A, connecting terminal B pass sequentially through quiet
Contact 3, moving contact and MCU connection form access.
As shown in figure 5, testing needle 10 is inserted into from instrument connection 2 under diagnostic state, pressure shrinks spring 7, leads to moving contact
It is separated with static contact 3.Because moving contact and static contact 3 separate, connecting terminal A, the connecting terminal B of 485 communication buses with
MCU access disconnects.Testing needle 10 directly contacts moving contact, so that the diagnosis communication line of test device be made to be connected to MCU, is formed
Access.
Thus do not needing to remove safely and fast to diagnose from connecting terminal by 485 communication bus A, B to have
The communication condition of 485 communication function devices.
Claims (2)
1.485 communication buses test switching device, which is characterized in that described including a pair of of contact, pcb board (5) and shell (1)
Contact include static contact (3) and moving contact；There is the stationary contact (9) of bending in the upper end of the static contact (3), is formed inverted
L shape, on the static contact (3) lower end fixed pcb board (5)；It is moving contact below the stationary contact (9) of static contact (3)；Described
Moving contact includes the movable contact (8) of upper end, is separately connected binding post (4) below movable contact (8)；It is worn on the pcb board (5)
Hole is perforated for wearing binding post (4)；The binding post (4) is located at the part above pcb board (5) and is wound with spring (7),
Movable contact (8) is contacted with stationary contact (9) under the elastic force of spring (7), and the section below that binding post (4) is located at pcb board (5) is provided with
Buckle, falls off from pcb board (5) to prevent binding post (4)；A pair of of contact, pcb board (5) are mounted in shell (1)；Institute
Have instrument connection (2) on the shell (1) stated, the instrument connection (2) position is corresponding with moving contact；The testing needle (10) of test equipment
After being inserted into instrument connection (2), movable contact (8) are pushed and are separated with static contact (3)；
Static contact (3) described in two is connect with connecting terminal A, connecting terminal B respectively, connecting terminal A, connecting terminal B difference
It is connected on A, B line of 485 communication buses；
The binding post (4) of moving contact described in two is connect with MCU respectively.
2. 485 communication bus according to claim 1 tests switching device, which is characterized in that under the movable contact (8)
Side is also connected with guide rod (6)；There are also another perforation for the pcb board (5), for wearing guide rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996010.4A CN106374973B (en) | 2016-11-12 | 2016-11-12 | 485 communication buses test switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996010.4A CN106374973B (en) | 2016-11-12 | 2016-11-12 | 485 communication buses test switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106374973A CN106374973A (en) | 2017-02-01 |
| CN106374973B true CN106374973B (en) | 2019-01-22 |
Family
ID=57894584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610996010.4A Active CN106374973B (en) | 2016-11-12 | 2016-11-12 | 485 communication buses test switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106374973B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102479137A (en) * | 2010-11-30 | 2012-05-30 | 亚旭电脑股份有限公司 | Detection device and detection method for detecting universal serial bus port of test equipment |
| CN105277760A (en) * | 2015-09-29 | 2016-01-27 | 江苏省电力公司镇江供电公司 | 485 communication bus wiring terminal strip for intelligent electric meter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5464098B2 (en) * | 2010-08-23 | 2014-04-09 | 住友電装株式会社 | Current detector |
| CN206547094U (en) * | 2016-11-12 | 2017-10-10 | 无锡佳测科技有限公司 | 485 communication buses test switching device |
-
2016
- 2016-11-12 CN CN201610996010.4A patent/CN106374973B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102479137A (en) * | 2010-11-30 | 2012-05-30 | 亚旭电脑股份有限公司 | Detection device and detection method for detecting universal serial bus port of test equipment |
| CN105277760A (en) * | 2015-09-29 | 2016-01-27 | 江苏省电力公司镇江供电公司 | 485 communication bus wiring terminal strip for intelligent electric meter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106374973A (en) | 2017-02-01 |
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