CN205647490U - Acceleration signal keeps apart device along separate routes - Google Patents
Acceleration signal keeps apart device along separate routes Download PDFInfo
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- CN205647490U CN205647490U CN201620276554.9U CN201620276554U CN205647490U CN 205647490 U CN205647490 U CN 205647490U CN 201620276554 U CN201620276554 U CN 201620276554U CN 205647490 U CN205647490 U CN 205647490U
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- acceleration signal
- signal
- pass device
- acceleration
- power supply
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Abstract
The utility model discloses an acceleration signal keeps apart device along separate routes including the active high pass ware that is arranged in removing acceleration signal flip -flop 1, be used for realizing two way acceleration signal of major -minor isolator that physics keeps apart 2, be used for realizing anti -aliasing filtering function's active low pass ware 3 and be used for simulation reduction acceleration signal's vice way power supply handle circuit 4. The utility model discloses sometimes, need divide the actual conditions of multichannel simultaneous acquisition to acceleration signal, provide one kind and keep apart device along separate routes, guarantee a plurality of data acquisition devices and effectively gather same acceleration signal simultaneously, avoid conflict each other and disturb.
Description
Technical field
This utility model belongs to acceleration signal acquisition technique field.Be specifically related to a kind of acceleration signal every
From branch apparatus.
Background technology
Acceleration transducer is widely used in the fields such as fault diagnosis, vibration-testing, monitoring, for adding
The collection of rate signal, analyze and process the important evidence determining that equipment state, by this signal
Analysis can extract fault signature, understand the inherent feature of equipment, the vibration trend etc. of facilities for observation.
But in some test site, due to the difference of test purpose, and avoid repeating to arrange acceleration transducer,
Gather the acceleration transducer letter of same constant current-supplying sometimes for multiple data acquisition units simultaneously
Number, now can produce both sides problem: the most multiple data acquisition units may the most externally supply
Electricity causes conflict；The most multiple data acquisition unit parallel connections gather same acceleration transducer letter
Number there is signal cross-talk problem, cause distorted signals, affect the analyzing and processing of follow-up data.Therefore,
It is necessary to invent a kind of acceleration signal isolation branch apparatus, by this device, multiple data acquisition packagings
Put and simultaneously, gather same acceleration signal without distortion can be prevented effectively from multi-path acquisition device mutual
Conflict and crosstalk.
Utility model content
The purpose of this utility model is to overcome above-mentioned not enough offer a kind of acceleration signal isolation branch
Device.
This utility model include for remove the active high pass device 1 of flip-flop in acceleration signal, for
Major-minor two-way acceleration signal is realized physically-isolated isolator 2, is used for realizing anti-aliasing filter function
Active low pass device 3 and for simulate reduction acceleration signal secondary road power supply processing circuit 4, described
The signal output part of active high pass device 1 is connected with the signal input part of isolator 2, described isolator 2
Signal output part is connected with the signal input part of active low pass device 3, and the signal of described active low pass device 3 is defeated
The signal input part of Chu Duanyufu road power supply processing circuit 4 is connected.
The practical situation that this utility model gathers sometimes for point multichannel for acceleration signal simultaneously, carries
For one isolation branch apparatus, it is ensured that multiple data acquisition units the most effectively gather same acceleration letter
Number, it is to avoid collide with each other and disturb.
Accompanying drawing explanation
Fig. 1 is this utility model schematic diagram.
Tu2Wei Fu road power supply processing circuit structural representation.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is further described:
A kind of acceleration signal isolation branch apparatus, including for removing flip-flop in acceleration signal
Active high pass device 1, for major-minor two-way acceleration signal being realized physically-isolated isolator 2, using
In realizing the active low pass device 3 of anti-aliasing filter function and for simulating the pair of reduction acceleration signal
Road power supply processing circuit 4, the signal output part of described active high pass device 1 inputs with the signal of isolator 2
End is connected, and the signal output part of described isolator 2 is connected with the signal input part of active low pass device 3, institute
The signal input part of the signal output part and secondary road power supply processing circuit 4 of stating active low pass device 3 is connected.
Wherein each several part effect is as follows, active high pass device 1: the flip-flop in acceleration signal removed；Every
From device 2: major-minor two-way is realized physical isolation, it is prevented effectively from two-way power supply and the conflict of signal and crosstalk；
Active low pass device 3: according to the flex point of the sample frequency configuration wave filter of secondary circuit-switched data harvester, it is achieved
Anti-aliasing filter function；Secondary road power supply processing circuit 4: the direct current that simulation secondary road power supply produces when powering is inclined
Put, this biasing is added on the AC signal of acceleration transducer, simulation reduction acceleration signal.
Its principle is: owing to being output as when the most conventional IEPE type piezoelectric acceleration sensor normally works
Superposition AC signal on 8V-12V direct current biasing, and the confession that secondary circuit-switched data harvester the most externally exports
Electricity electric current is 3mA-5mA direct current constant current, uses the method concatenating a 2.4K resistance over the ground, by this perseverance
Circulation turns to the bias voltage of 7.2V-12V, and the AC signal of sensor will be superimposed upon on this bias voltage,
It is achieved thereby that the reduction output of accelerometer signal.
As it is shown in figure 1, acceleration signal is divided into major-minor two-way, a road to access main road data acquisition unit
And it being provided by the working power of acceleration transducer, isolation branch apparatus is accessed on another road, and signal is first
After isolation branch apparatus processes, output includes to secondary circuit-switched data harvester, isolation branch apparatus again
Active high pass device 1, isolator 2, active low pass device 3, secondary road power supply processing circuit 4.Branch gathers
Time, acceleration primary signal one tunnel is directly output to main road data acquisition unit, and isolation is accessed on another road
After branch apparatus, first pass around active high pass device 1 by signal flip-flop remove, then through every
Realize isolation transmission physically from device 2, prevent two-way conflict and interference, then through active low pass device 3
Realize anti-aliasing filter, defeated after eventually passing secondary road power supply processing circuit 4 simulation reduction acceleration signal
Go out to secondary circuit-switched data harvester.This device can realize the isolation branch of acceleration signal, and will accelerate
Degree signal realizes 1:1 reduction transmission.
When branch gathers, mainly comprise the steps that the first step, acceleration signal line be divided into two-way,
Input with main road data acquisition unit and branch isolating device is connected respectively, then by pair circuit-switched data
Harvester is connected with the outfan of branch isolating device；
Second step, opens branch isolating device power supply, is separately turned on main road data acquisition again after it is stable
Acquisition means power supply and secondary circuit-switched data harvester power supply, treat that main road harvester supplies to acceleration transducer
After electricity is stable, major-minor two-way can gather acceleration signal simultaneously；
3rd step, closes isolation branch apparatus power supply and acceleration transducer power supply after having gathered, disconnected
Open connection cable.
Active high pass device 1 can use existing active high-pass filtering circuit, isolator 2 can use existing
Signal isolation circuit, active low pass device 3 can use existing active low-pass filter circuit, secondary road power supply
Process circuit 4 and can use existing circuit structure, it is possible to use the concrete structure in Fig. 2.
Claims (1)
1. an acceleration signal isolation branch apparatus, it is characterised in that include for removing acceleration letter
The active high pass device (1) of flip-flop in number, for major-minor two-way acceleration signal is realized physics every
From isolator (2), for realizing the active low pass device (3) of anti-aliasing filter function and be used for
Secondary road power supply processing circuit (4) of simulation reduction acceleration signal, described active high pass device (1)
Signal output part is connected with the signal input part of isolator (2), the signal output of described isolator (2)
End is connected with the signal input part of active low pass device (3), the signal output of described active low pass device (3)
The signal input part on Duan Yufu road power supply processing circuit (4) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620276554.9U CN205647490U (en) | 2016-04-05 | 2016-04-05 | Acceleration signal keeps apart device along separate routes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620276554.9U CN205647490U (en) | 2016-04-05 | 2016-04-05 | Acceleration signal keeps apart device along separate routes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647490U true CN205647490U (en) | 2016-10-12 |
Family
ID=57066249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620276554.9U Active CN205647490U (en) | 2016-04-05 | 2016-04-05 | Acceleration signal keeps apart device along separate routes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205647490U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983932A (en) * | 2021-02-22 | 2021-06-18 | 力源液压（苏州）有限公司 | Hydraulic test bed equipment and data acquisition system, measurement and control system and measurement and control method thereof |
| CN113654649A (en) * | 2021-08-18 | 2021-11-16 | 中车株洲电机有限公司 | Motor vibration monitoring device |
-
2016
- 2016-04-05 CN CN201620276554.9U patent/CN205647490U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983932A (en) * | 2021-02-22 | 2021-06-18 | 力源液压（苏州）有限公司 | Hydraulic test bed equipment and data acquisition system, measurement and control system and measurement and control method thereof |
| CN112983932B (en) * | 2021-02-22 | 2023-12-19 | 力源液压（苏州）有限公司 | Hydraulic test bed equipment and data acquisition system, measurement and control system and measurement and control method thereof |
| CN113654649A (en) * | 2021-08-18 | 2021-11-16 | 中车株洲电机有限公司 | Motor vibration monitoring device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |