CN206531899U - A kind of data collecting system based on V/F - Google Patents
A kind of data collecting system based on V/F Download PDFInfo
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- CN206531899U CN206531899U CN201720044434.0U CN201720044434U CN206531899U CN 206531899 U CN206531899 U CN 206531899U CN 201720044434 U CN201720044434 U CN 201720044434U CN 206531899 U CN206531899 U CN 206531899U
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Abstract
The utility model discloses a kind of data collecting system based on V/F, include voltage transmitting element, frequency reception unit, described voltage transmitting element includes the first voltage clamp circuit being sequentially connected electrically, the first filter circuit, first follows circuit, V/F change-over circuits, the first optical coupling isolation circuit, photoelectricity drive circuit；Described frequency reception unit includes the optical signal receiving circuit being sequentially connected electrically, the second optical coupling isolation circuit, F/V change-over circuits, second voltage clamp circuit, the second filter circuit, second follows circuit；The photoelectricity drive circuit of the voltage transmitting element is connected with the optical signal receiving circuit of frequency reception unit by optical fiber, and second follows the signal output part of circuit to access capture card.Acquisition precision of the present utility model is high, arithmetic speed is fast.
Description
Technical field
The utility model is related to signal acquisition field, specifically a kind of data collecting system changed based on V/F.
Background technology
Neutral beam injects（NBI）Be that current mechanism is most clear, one of efficiency of heating surface highest auxiliary mode of heating.With
The smooth injection of NBI devices, neutral beam injection has become the indispensable mode of heating of tokamak.In order to preferably be lifted
The performances of NBI in the course of the work are, it is necessary to operational data that is accurate, gathering each subsystem in real time.Ion gun high pressure is grasped to beat
The analog quantity oscillogram of fiery moment each power supply, and each load end true and accurate measured value, to high current ion source performance optimization,
Failture evacuation is particularly important, and then the stable operation for 4MW neutral-beam injectors provides support.
Utility model content
The utility model purpose is exactly to be adopted to make up the defect of prior art there is provided a kind of based on the V/F data changed
Collecting system.
The utility model is achieved through the following technical solutions：
A kind of data collecting system changed based on V/F, it is characterised in that：Include voltage transmitting element, frequency reception
Unit, described voltage transmitting element include the first voltage clamp circuit being sequentially connected electrically, the first filter circuit, first with
With circuit, V/F change-over circuits, the first optical coupling isolation circuit, photoelectricity drive circuit；Described frequency reception unit includes successively
The optical signal receiving circuit of electrical connection, the second optical coupling isolation circuit, F/V change-over circuits, second voltage clamp circuit, the second filtering
Circuit, second follow circuit；The photoelectricity drive circuit of the voltage transmitting element receives electricity with the optical signal of frequency reception unit
Road is connected by optical fiber, and second follows the signal output part of circuit to access capture card.
A kind of described data collecting system changed based on V/F, it is characterised in that：Described first, second follows circuit
Using LM318 amplifier chips.
A kind of described data collecting system changed based on V/F, it is characterised in that：The V/F change-over circuits are using pressure
Frequency conversion chip AD650.
A kind of described data collecting system changed based on V/F, it is characterised in that：The photoelectricity drive circuit is
HFBR1414 optical fiber sending modules.
A kind of described data collecting system changed based on V/F, it is characterised in that：The optical signal receiving circuit is
HFBR2412 optic fiber transceiver modules.
Principle of the present utility model is：
Data collecting system acquisition target is the 0 ~ 10V voltage signals being suspended on 100KV, and collection signal is electric after filtering
Lu Hou, circuit is followed by what isolation amplifier was constituted, into V/F change-over circuits, and system converts voltages into corresponding frequency, frequency
Rate signal is sent to HFBR1414 optical fiber sending modules by optical coupling isolation circuit, and frequency signal is converted to optical signal and entered by module
Row transmission.
Corresponding optical signal is converted to frequency by the frequency reception unit of low-pressure side by HFBR2412 optic fiber transceiver modules
Signal, and frequency signal is sent to by F/V converting units by optical coupling isolation circuit, and then be voltage signal by frequency conversion；
Due to the influence of high-frequency circuit, output voltage has high-frequency noise appearance, and filter circuit and voltage are added in output voltage rear end
Circuit is followed, the precision of data acquisition is greatly enhanced.
The utility model has the advantages that：
Acquisition precision of the present utility model is high, arithmetic speed is fast.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Embodiment
As shown in figure 1, a kind of data collecting system changed based on V/F, includes voltage transmitting element, frequency reception list
Member, voltage transmitting element includes the first voltage clamp circuit 1 being sequentially connected electrically, the first filter circuit 2, first follows circuit
3rd, V/F change-over circuits 4, the first optical coupling isolation circuit 5, photoelectricity drive circuit 6；Frequency reception unit includes what is be sequentially connected electrically
Optical signal receiving circuit 7, the second optical coupling isolation circuit 8, F/V change-over circuits 9, second voltage clamp circuit 10, the second filtered electrical
Road 11, second follow circuit 12；The photoelectricity drive circuit 6 of voltage transmitting element and the optical signal receiving circuit of frequency reception unit
7 are connected by optical fiber 13, and second follows the signal output part of circuit 12 to access capture card 14, the connection collection cabinet of capture card 14
15, the collection connection host computer 16 of cabinet 15.
The amplifier of circuit is followed to select to consider SR（Slew rate）And GB（Gain bandwidth product）, otherwise can cause to follow
Distorted signals.First, second follows circuit 3,12 to use LM318 amplifier chips, and SR is 70V/us.
V/F change-over circuits 4 use voltage-frequency conversion chip AD650, with peripheral circuit is simple, small volume, full scale 1MHz
Precision≤0.1% in the case of output.AD650 presses conversion chip at the same time as frequency, exports 0 ~ 10V.
Photoelectricity drive circuit 6 is HFBR1414 optical fiber sending modules.
Optical signal receiving circuit 7 is HFBR2412 optic fiber transceiver modules.
Claims (5)
1. a kind of data collecting system based on V/F, it is characterised in that：Include voltage transmitting element, frequency reception unit, institute
The voltage transmitting element stated include the first voltage clamp circuit being sequentially connected electrically, the first filter circuit, first follow circuit,
V/F change-over circuits, the first optical coupling isolation circuit, photoelectricity drive circuit；Described frequency reception unit, which includes, to be sequentially connected electrically
Optical signal receiving circuit, the second optical coupling isolation circuit, F/V change-over circuits, second voltage clamp circuit, the second filter circuit,
Second follows circuit；The optical signal receiving circuit of the photoelectricity drive circuit and frequency reception unit of the voltage transmitting element passes through
Optical fiber is connected, and second follows the signal output part of circuit to access capture card.
2. a kind of data collecting system based on V/F according to claim 1, it is characterised in that：Described first, second with
LM318 amplifier chips are used with circuit.
3. a kind of data collecting system based on V/F according to claim 1, it is characterised in that：The V/F change-over circuits
Using voltage-frequency conversion chip AD650.
4. a kind of data collecting system based on V/F according to claim 1, it is characterised in that：The photoelectricity driving electricity
Road is HFBR1414 optical fiber sending modules.
5. a kind of data collecting system based on V/F according to claim 1, it is characterised in that：The optical signal is received
Circuit is HFBR2412 optic fiber transceiver modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720044434.0U CN206531899U (en) | 2017-01-16 | 2017-01-16 | A kind of data collecting system based on V/F |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720044434.0U CN206531899U (en) | 2017-01-16 | 2017-01-16 | A kind of data collecting system based on V/F |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206531899U true CN206531899U (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720044434.0U Active CN206531899U (en) | 2017-01-16 | 2017-01-16 | A kind of data collecting system based on V/F |
Country Status (1)
| Country | Link |
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| CN (1) | CN206531899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507466A (en) * | 2018-11-15 | 2019-03-22 | 上海空间电源研究所 | A kind of high-precision wire sexual isolation sample circuit and its implementation method |
-
2017
- 2017-01-16 CN CN201720044434.0U patent/CN206531899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507466A (en) * | 2018-11-15 | 2019-03-22 | 上海空间电源研究所 | A kind of high-precision wire sexual isolation sample circuit and its implementation method |
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