CN107918043A - A kind of experiment photoelectric converter - Google Patents
A kind of experiment photoelectric converter Download PDFInfo
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- CN107918043A CN107918043A CN201711337703.3A CN201711337703A CN107918043A CN 107918043 A CN107918043 A CN 107918043A CN 201711337703 A CN201711337703 A CN 201711337703A CN 107918043 A CN107918043 A CN 107918043A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 42
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- 238000002955 isolation Methods 0.000 claims abstract description 54
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- 230000005622 photoelectricity Effects 0.000 claims description 5
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
- G01R15/241—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using electro-optical modulators, e.g. electro-absorption
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Abstract
The invention discloses a kind of experiment photoelectric converter, including photoelectric isolation module, for initial electrical signal to be converted into optical signal, and converts optical signal into electric signal output after processing, realizes isolation initial electrical signal；The output terminal connection of signal processing module, its input terminal and photoelectric isolation module, for carrying out logical operation to electric signal after processing, four tunnel control signals are converted into by electric signal after processing；The output terminal connection of electrooptic conversion module, its input terminal and signal processing module, for four tunnel control signals to be converted to four road optical signal outputs.The present invention carries out Phototube Coupling by photoelectric isolation module to input signal, and by power supply module to being isolated by voltage controller output voltage signal, inside modules are with the external world without electrical connection.When carrying out 160kV high voltage DC breaker type approval tests, effectively external electric signal can be isolated, prevent test loop high pressure from scurrying into the interference effect to control module.
Description
Technical field
The invention belongs to high-tension circuit to test field, more particularly, to a kind of experiment photoelectric converter.
Background technology
In high-tension circuit experiment, electrical equipment institute is with voltage to be generally voltage levels, and the electric current flowed through in circuit is
KA ranks, during being tested, it may appear that the high pressure of major loop scurries into the phenomenon interfered to controller.So need
Conversion isolation is carried out to initial control signal, using reliable optical signal transmission mode, control high-tension circuit testing equipment peace
Complete reliable action, experiment smoothly complete.
The content of the invention
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides a kind of experiment photoelectric converter, its
Purpose is in the technical problem that signal converts in solving existing photoelectric converter and can not be tested applied to high-tension circuit.
To achieve the above object, one side according to the invention, there is provided a kind of experiment photoelectric converter, including：
Photoelectric isolation module, for initial electrical signal to be converted into optical signal, and converts optical signal into telecommunications after processing
Number output, realize isolation initial electrical signal；
Signal processing module, its input terminal and photoelectric isolation module output terminal connection, for electric signal after processing into
Row logical operation, four tunnel control signals are converted into by electric signal after processing；
The output terminal connection of electrooptic conversion module, its input terminal and signal processing module, for four tunnel control signals to be turned
It is changed to four road optical signal outputs.
Preferably, experiment further includes button module with photoelectric converter, the control terminal of its output terminal and signal processing module
Connection, for inputting debugging signal to signal processing module when no initial electrical signal is inputted, realizes experiment opto-electronic conversion
The debugging of device.
Preferably, experiment further includes power supply module with photoelectric converter, its first output terminal and signal processing module power supply
The power end of end connection, its second output terminal and photoelectric isolation module connects, the electricity of its 3rd output terminal and electrooptic conversion module
Source connects, and the power end of its 4th output terminal and button module connects；
For by voltage carry out isolation processing output isolation after operating voltage, after isolation operating voltage as signal at
Manage module, photoelectric isolation module, electrooptic conversion module and button module and operating voltage is provided.
Preferably, photoelectric isolation module includes optical coupling isolator, filter capacitor, the first current-limiting resistance, the second current-limiting resistance,
3rd current-limiting resistance and pull-up resistor；
The power pins of optical coupling isolator connect the second output terminal of power supply module and the cathode of filter capacitor, optical coupling isolator
Grounding pin and filter capacitor anode ground connection, the first input pin of optical coupling isolator connect parallel connection the first current-limiting resistance,
One end of second current-limiting resistance, the first current-limiting resistance in parallel and the second current-limiting resistance other end as photoelectric isolation module
One input terminal, the second input terminal of the second input pin of optical coupling isolator as photoelectric isolation module；
The enabled pin of optical coupling isolator connects one end of the 3rd current-limiting resistance, another termination power supply mould of the 3rd current-limiting resistance
The second output terminal of block, the output pin of optical coupling isolator connect one end of pull-up resistor, another termination power supply mould of pull-up resistor RL
The second output terminal of block, the output pin of optical coupling isolator make the output terminal of photoelectric isolation module, electric signal after output processing.
Preferably, signal processing module includes logical process chip, filter capacitor, pull-up resistor and current-limiting resistance；
Logical process chip power pin connects the first output terminal of power supply module；And it is connected with the anode of filter capacitor, filters
Ripple capacitance negativing ending grounding；Logical process chip first enables pin and connects pull-up resistor, pull-up resistor other end ground connection；Logical process
Chip second enables pin and connects current-limiting resistance, another termination the first output terminal of power supply module of current-limiting resistance；First output pin is extremely
Input port of 4th output pin as signal processing module, output terminal and button module for same photoelectric isolation module
Output terminal connects, and the 5th output pin to the 8th output pin and grounding pin is grounded, and the first output pin is to the 4th defeated
Go out output port of the pin as signal processing module；
Carried out by the modulated signal exported to the electric signal after the processing that photoelectric isolation module exports or button module
Logical operation, four tunnel control signals are exported by the output port of signal processing module.
Preferably, button module includes switch and pull-up resistor；
Wherein, switch one end is connected with the 4th output terminal of power supply module, and one end of pull-up resistor is grounded, pull-up resistor it is another
One end is connected with the other end switched, signal output part of the ungrounded end of pull-up resistor as button module；
Signal output part is used to export signal to signal processing module, when the switch is closed, is sent to signal processing module
High level signal, high level signal is as debugging signal.
Preferably, power supply module includes converting unit, filter capacitor and electric capacity of voltage regulation；
The output terminal of converting unit positive input pin and voltage controller connects, while is connected with filter capacitor anode, turns
Change unit negative input pin to be grounded and with filter capacitor negative terminal be connected, the anode phase of converting unit positive output foot and electric capacity of voltage regulation
Even, and it is connected and is grounded with the negative terminal of electric capacity of voltage regulation as the output terminal output services voltage of power supply module, grounding pin.
Preferably, the first electrooptic switching element includes first pair and door high-speed driver, the first light in electrooptic conversion module
Fine transmitter, the first capacitance, the second capacitance, the 3rd capacitance, the first current-limiting resistance；
First pair with door high-speed driver power pins and the first capacitance in parallel, the second capacitance and the 3rd capacitance one end
It is connected, and is connected with the 3rd output terminal of power supply module, the first capacitance in parallel, the second capacitance and the 3rd another termination of capacitance
Ground；First pair of first input end with the first input pin of door high-speed driver as electrooptic conversion module；First pair and door
Second input pin of high-speed driver connects one end of the first current-limiting resistance, and the of the first current-limiting resistance other end and power supply module
Three output terminals connect；First pair is grounded with the 3rd input pin of door high-speed driver, the 4th input pin and grounding pin；The
On a pair of and the first output pin of door high-speed driver and the first fiber optic emitter negative electrode pin, the second pull-up resistor and the 3rd
One end of pull-up resistor is connected, the 3rd output of the second pull-up resistor other end and the 3rd pull-up resistor other end with power supply module
End connection, the cathode foot ground connection of fiber optic emitter；
First pair of control signal output drive signal exported with door high-speed driver according to signal processing module, driving the
One fiber optic emitter produces first via optical signal.
Preferably, the experiment is placed in shielding box with photoelectric converter.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
1st, the present invention carries out Phototube Coupling by photoelectric isolation module to input signal, and by power supply module to by voltage
Controller output voltage signal is isolated, and inside modules are with the external world without electrical connection.Carrying out 160kV high voltage DC breakers
During type approval test, effectively external electric signal can be isolated, prevent test loop high pressure is scurried into from being done to control module
Disturb influence.
2nd, in addition, photoelectric converter is installed in the metal shielding box of customization, there is the effect of electromagnetism interference, output letter
Number optical fiber output is used, can realize the longer-distance transmitting of signal and realize electrical isolation, prevent the height of major loop
Pressure, which is scurried into, interferes test loop, improves control reliability.
The 3rd, button submodule is set, can meet the needs of field adjustable.
4th, experiment photoelectric conversion module provided by the invention is simple in structure, and small, cost is low；Run the spy of small power consumption
Point.
Brief description of the drawings
Fig. 1 is the functional block diagram of experiment photoelectric converter provided in an embodiment of the present invention；
Fig. 2 is the physical circuit figure of power supply module in experiment photoelectric converter provided in an embodiment of the present invention；
Fig. 3 is the physical circuit figure of photoelectric isolation module in experiment photoelectric converter provided in an embodiment of the present invention；
Fig. 4 is the physical circuit figure of button module in experiment photoelectric converter provided in an embodiment of the present invention；
Fig. 5 is the physical circuit figure of signal processing module in experiment photoelectric converter provided in an embodiment of the present invention；
Fig. 6 (a) is the structure chart of the first electric light conversion unit in electrooptic conversion module；Fig. 6 (b) is in electrooptic conversion module
The structure chart of second electric light conversion unit；Fig. 6 (c) is the structure chart of the 3rd electric light conversion unit in electrooptic conversion module；Fig. 6
(d) it is the structure chart of the 4th electric light conversion unit in electrooptic conversion module.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not forming conflict each other can be mutually combined.
Fig. 1 shows circuit catenation principle block diagram provided in an embodiment of the present invention, for convenience of description, illustrate only and this
The relevant part of inventive embodiments, details are as follows：
, should the object of the present invention is to provide a kind of experiment photoelectric converter for the demand of current high-tension circuit experiment
The advantages of experiment photoelectric converter has effectiveness, and simple and reliable, small, cost is low, operation small power consumption, can
Realize signal photoelectricity and electro-optic conversion with debugging on the spot.
The experiment includes power supply module 1, photoelectric isolation module 2, button module 3, signal processing module with photoelectric converter
4, electrooptic conversion module 5.Power supply module 1 includes four output terminals, successively with photoelectric isolation module 2, at button module 3, signal
The power end connection of module 4 and electrooptic conversion module 5 is managed, power supply module 1 is used to provide DC-DC power source conversion module defeated
It is other four module for power supply to enter power supply IN+5V isolation to be converted into supply voltage.
The output terminal of photoelectric isolation module 2 is connected with the input terminal of signal processing module 4, and photoelectric isolation module 2 is used to connect
The electric signal that upper strata is sent is received, converts electrical signals to optical signal, and converts optical signal into electric signal after isolation processing, is transmitted
To signal processing module 4.
Button module 3 receives man-machine interactive signal, it can be achieved that debugging on the spot to photoelectric converter, by button to signal
Processing module 4 sends high level signal, for being debugged when no signal is inputted to functions of modules.
The input terminal of signal processing module 4 is connected to the output terminal of the button module, the input terminal of signal processing module
It is connected to the output terminal of the photoelectric isolation module；The input terminal of electrooptic conversion module is connected to the output of signal processing module
End, the output terminal of electrooptic conversion module is used to export optical signal, when button module input modulating signal, signal processing module 4
Logical process is carried out to the modulated signal that button module 3 exports, output control signal, is used for realization to experiment photoelectric converter
It is modulated, after the input electrical signal of photoelectric isolation module 2, after signal processing module 4 analyzes and processes input signal
Output control signal, control signal give electrooptic conversion module 5 sending action signal.Electrooptic conversion module 5 is used to export optical signal,
With four road light signal output end mouths.Experiment photoelectric converter has the characteristics that fast response time, super low-power consumption.
Fig. 2 shows the physical circuit figure of power supply module in experiment photoelectric converter provided in an embodiment of the present invention, in detail
State as follows：
Power supply module 1 includes：Converting unit U1, filter capacitor C1 and electric capacity of voltage regulation C2, wherein, converting unit U1 is just defeated
The output terminal for entering pin Vin+ with voltage controller connects, i.e., is connected with IN+5V connections, and filter capacitor C1 anodes, bears defeated
Entering pin Vin- with ground and filter capacitor C1 negative terminals to be connected, positive output pin Vo1+ is connected with the anode of electric capacity of voltage regulation C2, and
Output+5V voltages, grounding pin foot GND are connected and are grounded with the negative terminal of C2.
Power supply module 1 is isolated by the conversions of right+5V voltages, to reach photoelectric isolation module 2, button module 3, at signal
The circuit chip in module 4 and electrooptic conversion module 5 is managed to operating voltage requirement, and for powering to each modular circuit.Its
In, converting unit U1 uses chip HZD10C-05S05.
Fig. 3 shows the physical circuit of photoelectric isolation module in experiment photoelectric converter provided in an embodiment of the present invention
Figure, in embodiments of the present invention, photoelectric isolation module 2 includes：Optical coupling isolator U2, filter capacitor C3, the first current-limiting resistance
RF1, the second current-limiting resistance RF2, the 3rd current-limiting resistance R2 and pull-up resistor RL；
The power pins VCC of optical coupling isolator U2 connects VCC+5V operating voltages and the filter that the output terminal of power supply module 1 provides
The anode ground connection of the cathode of ripple capacitance C3, grounding pin GND and filter capacitor C3, the first input pin A connect the first current limliting electricity
Hinder RF1, one end of the second current-limiting resistance RF2, the first current-limiting resistance RF1 and the second current-limiting resistance RF2 other ends as photoelectricity every
From the first input end of module 2, meet input reference voltage BI-VCC, the second input pin K and meet input signal BI-INPUT, as
Second input terminal of photoelectric isolation module 2, enabled foot VE connect one end of current-limiting resistance R2, another termination of the 3rd current-limiting resistance R2
VCC+5V operating voltages, output pin out connects one end of pull-up resistor RL, and exports signal OPTICAL-TX as output terminal,
Another termination VCC+5V operating voltages of pull-up resistor RL.Wherein, the U2 can use chip 6N137.
Fig. 4 shows the physical circuit figure of button module 3 in experiment photoelectric converter provided in an embodiment of the present invention, presses
Button module 3 includes：Button S1, pull-up resistor R3；The operating voltage of a termination DC-DC power source conversion module output of button S1
VCC+5V, the other end connects pull-up resistor R3, and exports signal OPTICAL-TX, pull-up resistor R3 as the output terminal of button module
The other end ground connection；High level signal is sent to signal processing module 4 by lower button S1, for debugging module function.
Fig. 5 shows the physical circuit of signal processing module 4 in experiment photoelectric converter provided in an embodiment of the present invention
Figure, signal processing module 4 include：Logical process chip U3, filter capacitor C5, pull-up resistor R31, current-limiting resistance R32.
Logical process chip U3 power pins VCC meets operating voltage VCC+5V, and is connected with the anode of filter capacitor C5,
Wherein filter capacitor C5 negativing ending groundings；First enabled pin OE1 connects pull-up resistor R31, wherein another terminations of pull-up resistor R31
Ground；Second enabled pin OE2 meets current-limiting resistance R32, another termination operating voltage VCC+5V of wherein current-limiting resistance R32；First is defeated
Enter pin A1, the second input pin A2, the 3rd input pin A3, inputs of the 4th input pin A4 as signal processing module
End, connect photoelectric isolation module and button module output signal OPTICAL-TX, the 5th input pin A5, the 6th input pin A6,
7th input pin A7, the 8th input pin A8, grounding pin GND ground connection, the first output pin Y1, the second output pin Y2,
3rd output pin Y3, output terminals of the 4th output pin Y4 as signal processing module, export signal OPTICAL- respectively
TX1、OPTICAL-TX2、OPTICAL-TX3、OPTICAL-TX4；Wherein, the U3 can use chip SN74ACT244PWR.
Shown in the circuit of electrooptic conversion module 5 such as Fig. 6 (a) to Fig. 6 (d), electrooptic conversion module includes the first electro-optic conversion
Unit, the second electrooptic switching element, the 3rd electrooptic switching element and the 4th electrooptic switching element, wherein, the first electro-optic conversion
Unit includes first pair and door high-speed driver U4-11, the first fiber optic emitter U4-12, the first capacitance C411, the second capacitance
C412, the 3rd capacitance C413, the first current-limiting resistance R411, the first pull-up resistor R412 and the second pull-up resistor R413.Second
Electrooptic switching element includes second pair and door high-speed driver U4-21, the second fiber optic emitter U4-22, the 4th capacitance C421, the
Five capacitance C422, the 6th capacitance C423, the second current-limiting resistance R421, the 3rd pull-up resistor R422 and the 4th pull-up resistor
R423；3rd electrooptic switching element includes the 3rd pair and door high-speed driver U4-31, the 3rd fiber optic emitter U4-32, the 7th electricity
Hold C431, the 8th capacitance C432, the 9th capacitance C433, the 3rd current-limiting resistance R431, on the 5th pull-up resistor R432 and the 6th
Pull-up resistor R433；4th electrooptic switching element include the 4th pair with door high-speed driver U4-41, the 4th fiber optic emitter U4-42,
Tenth capacitance C441, the 11st capacitance C442, the 12nd capacitance C443, the 4th current-limiting resistance R441, the 7th pull-up resistor R442
And the 8th pull-up resistor R443.
In the first electrooptic switching element, first pair and door high-speed driver U4-11 feet VCC and the first capacitance C411, second
Capacitance C412, the 3rd capacitance C413 one end are connected and connect VCC+5V operating voltages, wherein the first capacitance C411, the second capacitance
C412, the 3rd capacitance C413 other ends ground connection；First input pin 1A meets signal processing module output signal OPTICAL-TX1,
That is first output terminals of the first input pin 1A as electrooptic conversion module；Second input pin 1B first meets current-limiting resistance R411
One end, wherein, first meets another termination operating voltage VCC+5V of current-limiting resistance R411；3rd input pin 2A, the 4th input
Pin 2B, grounding pin GND are grounded；The negative electrode pin 2,6,7 and second of first output pin 1Y and fiber optic emitter U4-12
Pull-up resistor R412, one end of the 3rd pull-up resistor R413 are connected, wherein the second pull-up resistor R412, the 3rd pull-up resistor R413
The other end is connected with VCC+5V operating voltages.The negative electrode pin 3 of fiber optic emitter U4-12 is grounded.
In the second electrooptic switching element, second pair with door high-speed driver U4-21 feet VCC, the 4th capacitance C421, the 5th electricity
Hold C422, the 6th capacitance C423 one end to be connected and connect VCC+5V operating voltages, wherein the 4th capacitance C421, the 5th capacitance C422,
The 6th capacitance C423 other ends are grounded；First input pin 1A meets signal processing module output signal OPTICAL-TX2；First is defeated
Entering second output terminals of the pin 1A as electrooptic conversion module, the second input pin 1B connects one end of the second current-limiting resistance R421,
Another termination operating voltage VCC+5V of wherein the second current-limiting resistance R421；3rd input pin 2A, the 4th input pin 2B, ground connection
Pin GND is grounded；The negative electrode pin 2,6,7 and the 3rd pull-up resistor of first output pin 1Y and fiber optic emitter U4-22
R422, one end of the 4th pull-up resistor R423 are connected, wherein the 3rd pull-up resistor R422, the 4th pull-up resistor R423 other ends with
VCC+5V operating voltages are connected.3 foot of the cathode ground connection of second fiber optic emitter U4-22.
In the 3rd electrooptic switching element, the 3rd couple and door high-speed driver U4-31 feet VCC and the 7th capacitance C431, the 8th
Capacitance C432, the 9th capacitance C433 one end are connected and connect VCC+5V operating voltages, the 7th capacitance C431, the 8th capacitance C432,
Nine capacitance C433, the first input pin 1A meet signal processing module output signal OPTICAL-TX3；First input pin 1A conducts
3rd output terminal of electrooptic conversion module, the second input pin 1B connects one end of the 3rd current-limiting resistance R431, wherein the 3rd current limliting
Another termination operating voltage VCC+5V of resistance R431；3rd input pin 2A, the 4th input pin 2B, grounding pin GND ground connection；
First output pin 1Y and the negative electrode pin 2,6,7 of the 3rd fiber optic emitter U4-32 and one end of pull-up resistor R432, R433
It is connected, wherein the 5th pull-up resistor R432, the 6th pull-up resistor R433 other ends are connected with VCC+5V operating voltages.3rd optical fiber
The negative electrode pin 3 of transmitter U4-32 is grounded.
In the 4th electrooptic switching element, the 4th couple and door high-speed driver U4-41 feet VCC and the tenth capacitance C441, the tenth
One capacitance C442, the 12nd capacitance C443 one end are connected and connect VCC+5V operating voltages, wherein the tenth capacitance C441, the 11st electricity
Hold C442, the 12nd capacitance C443 other ends ground connection；First input pin 1A meets signal processing module output signal OPTICAL-
TX4；Second input pin 1B connects one end of the 4th current-limiting resistance R441, wherein another termination activities electricity of the 4th current-limiting resistance R441
Press VCC+5V；3rd input pin 2A, the 4th input pin 2B, grounding pin GND ground connection；First output pin 1Y and the 4th light
The negative electrode pin 2,6,7 and the 7th pull-up resistor R442, one end of the 8th pull-up resistor R443 of fine transmitter U4-42 is connected,
Wherein the 7th pull-up resistor R442, the 8th pull-up resistor R443 other ends are connected with VCC+5V operating voltages.4th fibre optical transmission
The negative electrode pin 3 of device U4-42 is grounded.
It is wherein first pair high with door with door high-speed driver U4-21, the 3rd pair with door high-speed driver U4-11, second pair
Fast driver U4-31, the 4th couple and door high-speed driver U4-41 can use chip SN75451, the first fiber optic emitter U4-
12nd, the second fiber optic emitter U4-22, the 3rd fiber optic emitter U4-32, the 4th fiber optic emitter U4-42 can use chip
HFBR1414。
First fiber optic emitter U4-12, the second fiber optic emitter U4-22, the 3rd fiber optic emitter U4-32, the 4th optical fiber
Transmitter U4-42 is connected by optical fiber with respectively switching supporting trigger device in control object high-voltage test loop, tactile for controlling
Hair switch；Controlled using optical fiber, can realize the longer-distance transmitting of signal and realize electrical isolation, prevent from leading back
The high pressure on road, which is scurried into, interferes controller.
Fiber optic emitter is connected by optical fiber and the supporting trigger device of control object, the triggering for control object；Adopt
Controlled with optical fiber, can realize the longer-distance transmitting of signal and realize electrical isolation, prevent the high pressure of major loop from altering
Enter and control object is interfered.
The present invention, as power module, will input electricity by using the economical DC-DC power source conversion module of small, price
IN+5V isolation in source is converted into+5V supply voltages, saves volume and cost；Using photoelectric isolated chip 6N137 and logic chip
SN74ACT244PWR, fast response time, output signal time delay are small, and power consumption is ultralow；Button module is set, can meet live tune
The demand of examination；In addition, photoelectric converter is installed in the metal shielding box of customization, and a large amount of filtering are equipped with each modular circuit
And photoelectric coupled circuit, there is the effect of electromagnetism interference, output signal uses optical fiber output, and can realize that signal is longer-distance can
It by transmission, and can realize electrical isolation, prevent the high pressure of major loop is scurried into from being interfered to test loop, it is reliable to improve control
Property.
Present invention is mainly applied in 160kV high voltage DC breaker type approval tests, initial electric control signal turns from photoelectricity
Parallel operation input terminal input, electric signal is carried out by the photoelectric converter processing be converted into four road optical signals be sent to switch branch
In road and each control unit of commutation circuit, as test loop control sequential starting point.The photoelectric converter uses power supply module 1
Electrical isolation is carried out to alternating current and initial electrical signal with photoelectric isolation module 2, the output signal that experiment is sent out with photoelectric converter is adopted
With optical output signal, inside modules are with the external world without electrical connection.When carrying out 160kV high voltage DC breaker type approval tests,
Effectively external electric signal can be isolated, prevent test loop high pressure from scurrying into the interference effect to control module.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., should all include
Within protection scope of the present invention.
Claims (9)
- A kind of 1. experiment photoelectric converter, it is characterised in that including：Photoelectric isolation module, for initial electrical signal to be converted into optical signal, and convert optical signal into processing after electric signal it is defeated Go out, realize isolation initial electrical signal；The output terminal connection of signal processing module, its input terminal and photoelectric isolation module, for patrolling electric signal after processing Computing is collected, electric signal after processing is converted into four tunnel control signals；The output terminal connection of electrooptic conversion module, its input terminal and signal processing module, for four tunnel control signals to be converted to Four road optical signal outputs.
- 2. experiment photoelectric converter as claimed in claim 1, it is characterised in that experiment further includes button with photoelectric converter Module, its output terminal and signal processing module control terminal connection, for when no initial electrical signal is inputted to signal processing Module input debugging signal, realizes the debugging of experiment photoelectric converter.
- 3. experiment photoelectric converter as claimed in claim 2, it is characterised in that experiment further includes power supply with photoelectric converter Module, its first output terminal are connected with signal processing module power end, the power end of its second output terminal and photoelectric isolation module The power end of connection, its 3rd output terminal and electrooptic conversion module connects, and the power end of its 4th output terminal and button module connects Connect；For by the way that to operating voltage after voltage progress isolation processing output isolation, operating voltage is as signal processing mould after isolation Block, photoelectric isolation module, electrooptic conversion module and button module provide operating voltage.
- 4. such as claims 1 to 3 any one of them experiment photoelectric converter, it is characterised in that photoelectric isolation module includes Optical coupling isolator, filter capacitor (C3), the first current-limiting resistance (RF1), the second current-limiting resistance (RF2), the 3rd current-limiting resistance (R2) And pull-up resistor；The power pins of optical coupling isolator connect the second output terminal of power supply module and the cathode of filter capacitor (C3), optical coupling isolator Grounding pin and filter capacitor (C3) anode ground connection, the first input pin of optical coupling isolator connects the first current limliting electricity of parallel connection (RF1), one end of the second current-limiting resistance (RF2) are hindered, the first current-limiting resistance (RF1) in parallel and the second current-limiting resistance (RF2) are another First input end of the one end as photoelectric isolation module, the second input pin of optical coupling isolator as photoelectric isolation module Two input terminals；The enabled pin of optical coupling isolator connects one end of the 3rd current-limiting resistance (R2), and another termination of the 3rd current-limiting resistance (R2) supplies Electric the second output terminal of module, the output pin of optical coupling isolator connect one end of pull-up resistor (RL), the other end of pull-up resistor RL The second output terminal of power supply module is connect, the output pin of optical coupling isolator makees the output terminal of photoelectric isolation module, electricity after output processing Signal.
- 5. such as Claims 1-4 any one of them experiment photoelectric converter, it is characterised in that signal processing module includes Logical process chip, filter capacitor (C5), pull-up resistor (R31) and current-limiting resistance (R32)；Logical process chip power pin connects the first output terminal of power supply module；And it is connected with the anode of filter capacitor (C5), filters Ripple capacitance (C5) negativing ending grounding；Logical process chip first enables pin and connects pull-up resistor (R31), and pull-up resistor (R31) is another End ground connection；Logical process chip second enables pin and connects current-limiting resistance (R32), another termination power supply module of current-limiting resistance (R32) First output terminal；Input port of first output pin to the 4th output pin as signal processing module, for same photoelectricity every Connected from the output terminal of module with the output terminal of button module, the 5th output pin is equal to the 8th output pin and grounding pin Ground connection, output port of first output pin to the 4th output pin as signal processing module；Logic is carried out by the modulated signal exported to the electric signal after the processing that photoelectric isolation module exports or button module Computing, four tunnel control signals are exported by the output port of signal processing module.
- 6. such as claim 2 to 5 any one of them experiment photoelectric converter, it is characterised in that button module includes switch (S1) and pull-up resistor (R3)；Wherein, switch (S1) one end is connected with the 4th output terminal of power supply module, one end ground connection of pull-up resistor (R3), pull-up resistor (R3) the other end is connected with the other end of switch (S1), signal output of pull-up resistor (R3) the ungrounded end as button module End；Signal output part is used to export signal to signal processing module, when switching (S1) closure, is sent out to signal processing module (4) High level signal is sent, high level signal is as debugging signal.
- 7. such as claim 3 to 6 any one of them experiment photoelectric converter, it is characterised in that power supply module includes conversion Unit (U1), filter capacitor (C1) and electric capacity of voltage regulation (C2)；The output terminal of converting unit (U1) positive input pin and voltage controller connect, while with filter capacitor (C1) anode phase Even, converting unit (U1) negative input pin is grounded and same filter capacitor (C1) negative terminal is connected, converting unit positive output foot and voltage stabilizing The anode of capacitance (C2) is connected, and as the output terminal output services voltage of power supply module, grounding pin and electric capacity of voltage regulation (C2) Negative terminal be connected and be grounded.
- 8. such as claim 1 to 7 any one of them experiment photoelectric converter, it is characterised in that the in electrooptic conversion module One electrooptic switching element include first pair with door high-speed driver, the first fiber optic emitter (U4-12), the first capacitance (C411), Second capacitance (C412), the 3rd capacitance (C413), the first current-limiting resistance (R411)；First pair with door high-speed driver (U4-11) power pins and the first capacitance (C411) in parallel, the second capacitance (C412) And the 3rd capacitance (C413) one end be connected, and be connected with the 3rd output terminal of power supply module, the first capacitance (C411) in parallel, Second capacitance (C412) and the 3rd capacitance (C413) other end ground connection；First pair and the first of door high-speed driver (U4-11) First input end of the input pin as electrooptic conversion module；Second input pin of first pair and door high-speed driver connects first The 3rd output terminal connection of one end of current-limiting resistance (R411), the first current-limiting resistance (R411) other end and power supply module；First It is double to be grounded with the 3rd input pin of door high-speed driver, the 4th input pin and grounding pin；First pair and door high-speed driving The first output pin of device and the first fiber optic emitter (U4-12) negative electrode pin, the second pull-up resistor (R412) and the 3rd pull-up One end of resistance (R413) is connected, the second pull-up resistor (R412) other end and the 3rd pull-up resistor (R413) other end with confession The 3rd output terminal connection of electric module, the cathode foot ground connection of fiber optic emitter (U4-12)；First pair of control signal output drive signal exported with door high-speed driver according to signal processing module, drives the first light Fine transmitter produces first via optical signal.
- 9. such as claim 1 to 8 any one of them experiment photoelectric converter, it is characterised in that the experiment is turned with photoelectricity Parallel operation is placed in shielding box.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109188488A (en) * | 2018-09-21 | 2019-01-11 | 合肥安聚仪电科技有限公司 | A kind of Micro Core radiation dose measurement device |
| CN109450549A (en) * | 2018-11-26 | 2019-03-08 | 中国人民解放军陆军工程大学 | Photoelectric conversion device and communication system |
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| CN202330520U (en) * | 2011-11-02 | 2012-07-11 | 广东美的电器股份有限公司 | High-voltage isolation sampling circuit |
| CN205123349U (en) * | 2015-11-26 | 2016-03-30 | 罗继东 | A locking mechanical system charges |
| CN105790746A (en) * | 2016-04-13 | 2016-07-20 | 华中科技大学 | Digital signal fiber transmission triggering system |
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| CN202330520U (en) * | 2011-11-02 | 2012-07-11 | 广东美的电器股份有限公司 | High-voltage isolation sampling circuit |
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