CN112928950A - Data transmission system and high-voltage soft start control system based on optical fiber multiplexing - Google Patents
Data transmission system and high-voltage soft start control system based on optical fiber multiplexing Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 153
- 230000005540 biological transmission Effects 0.000 title claims abstract description 57
- 239000000835 fiber Substances 0.000 claims abstract description 53
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 34
- 239000010703 silicon Substances 0.000 claims abstract description 34
- 230000003993 interaction Effects 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 28
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 230000001960 triggered effect Effects 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 12
- 230000004044 response Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
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Abstract
The invention relates to a data transmission system and a high-voltage soft start control system based on optical fiber multiplexing, wherein the data transmission system based on the optical fiber multiplexing comprises: the system comprises a silicon controlled trigger plate, a driver, a driving circuit, a thyristor interface, a sending circuit and an optical fiber distribution plate; the optical fiber distribution plate includes: a trigger fiber assembly and a feedback fiber assembly; the driver acquires target information corresponding to a thyristor connected with the thyristor interface through a driving circuit according to a data acquisition request sent by the main controller through the triggering optical fiber assembly; the silicon controlled trigger board receives the target information and sends the target information to the main controller through the sending circuit and the feedback optical fiber assembly, and data interaction between the main controller and the thyristor is achieved. According to the scheme, the triggering optical fiber assembly and the feedback optical fiber assembly are directly utilized to realize data interaction between the thyristor and the main controller, and communication optical fibers are not required to be arranged, so that a communication function can be realized under the condition that the number of the optical fibers is not increased, and the fault occurrence rate and the system construction cost are reduced.
Description
Technical Field
The invention relates to the technical field of motor driving, in particular to a data transmission system and a high-voltage soft start control system based on optical fiber multiplexing.
Background
The high voltage soft starter is a standard motor starting controller used for protecting and controlling medium and high voltage AC motors. In a traditional high-voltage soft start control system, a main controller sends a trigger signal to each phase of thyristor SCR through a trigger pulse sending optical fiber, and a driver sends a conduction feedback pulse signal to the main controller through a conduction feedback optical fiber so as to judge whether the SCR is conducted or not.
However, the data interaction between the main controller and the driver cannot be completed in the traditional high-voltage soft start control system, and because the high-voltage system is adopted, if the data interaction is required, a communication optical fiber needs to be arranged, so that the signal isolation is completed when the data interaction between the main controller and the driver is completed. However, if the communication fiber is added, the number of fibers increases, which increases the occurrence rate of failure and increases the system construction cost.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a data transmission system and a high-voltage soft start control system based on optical fiber multiplexing, so as to solve the problems in the prior art that if data interaction between a master controller and a driver is to be performed, a communication optical fiber needs to be added, the number of optical fibers is increased, the failure rate is increased, and the system construction cost is increased.
In order to achieve the purpose, the invention adopts the following technical scheme:
a data transmission system based on optical fiber multiplexing, comprising: the system comprises a silicon controlled trigger plate, a driver, a driving circuit, a thyristor interface, a sending circuit and an optical fiber distribution plate;
the optical fiber distribution plate includes: a trigger fiber assembly and a feedback fiber assembly;
the silicon controlled trigger board is respectively connected with the driver and the sending circuit;
the driver is connected with the main controller through the triggering optical fiber assembly;
the driver is connected with the thyristor interface through the driving circuit;
the transmitting circuit is connected with the main controller through the feedback optical fiber assembly;
the driver is used for acquiring target information corresponding to the thyristor connected with the thyristor interface through the driving circuit according to a data acquisition request sent by the main controller through the triggering optical fiber assembly;
the silicon controlled trigger board is used for receiving target information sent by the driver and sending the target information to the main controller through the sending circuit and the feedback optical fiber assembly, so that data interaction between the main controller and the thyristor is realized.
Further, the data transmission system based on optical fiber multiplexing further includes: turning on the feedback circuit;
the silicon controlled trigger board is connected with the feedback optical fiber component through the conduction feedback circuit;
the feedback optical fiber assembly is connected with the master controller;
the main controller sends a trigger signal to the driver by using the trigger optical fiber assembly so that the driver triggers the thyristor connected with the thyristor interface through the drive circuit;
after the thyristor is triggered, the driver sends a conducting signal to the thyristor trigger plate;
the thyristor trigger board sends a conduction feedback pulse signal to the main controller through the conduction feedback circuit and the feedback optical fiber assembly, so that the main controller judges whether the thyristor is conducted or not.
Further, in the data transmission system based on optical fiber multiplexing, the number of the silicon controlled trigger plates is at least one; the silicon controlled trigger plates, the driver, the driving circuit, the sending circuit, the conduction feedback circuit and the feedback optical fiber assemblies are the same in number and are in one-to-one correspondence;
each thyristor trigger plate corresponds to two thyristor interfaces and two trigger optical fiber assemblies, and each thyristor interface is connected with a thyristor; the two thyristors connected with the two thyristor interfaces are reversely connected in parallel to form a thyristor combination;
the two trigger optical fiber assemblies corresponding to each silicon controlled trigger board and the feedback optical fiber assembly form an optical fiber set, and the number of the optical fiber sets contained in the optical fiber distribution board is the same as that of the silicon controlled trigger boards and corresponds to the silicon controlled trigger boards one by one.
Further, in the data transmission system based on optical fiber multiplexing, the time when the master controller sends the data acquisition request is a preset time duration of voltage negative half cycle delay, so as to implement optical fiber time-sharing multiplexing of sending the data acquisition request and sending the trigger signal;
all the drivers receive the data acquisition requests sent by the master controller at the same time, all the silicon controlled trigger boards send the target information to the master controller in sequence according to a preset sequence, and the time when every two adjacent silicon controlled trigger boards send the target information to the master controller in the preset sequence is separated by a preset interval duration.
Further, in the data transmission system based on optical fiber multiplexing, the triggering optical fiber assembly includes: a first fiber optic transceiver and a first resistor;
the first end of the first optical fiber transceiver is respectively connected with the first end of the first resistor and a power supply;
the second end of the first optical fiber transceiver is respectively connected with the second end of the first resistor, the first end of the driver and the receiving end of the silicon controlled trigger board;
and the third end of the first optical fiber transceiver is grounded.
Further, in the data transmission system based on optical fiber multiplexing, the driving circuit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a voltage stabilizing diode, an MOS (metal oxide semiconductor) tube, a first diode, a first capacitor and a second capacitor;
the second end of the driver is respectively connected with the first end of the voltage stabilizing diode, the first end of the third resistor and the first end of the MOS tube through the second resistor;
the second end of the MOS tube is respectively connected with the first end of the second capacitor and the first end of the seventh resistor through the sixth resistor;
the second end of the second capacitor and the second end of the seventh resistor are both connected with the power supply;
the third end of the MOS tube is respectively connected with the first end of the fourth resistor, the first end of the fifth resistor, the first end of the first capacitor and the first end of the first diode;
the second end of the first diode is connected with the first end of the thyristor interface;
the second end of the voltage stabilizing diode, the second end of the third resistor, the second end of the fourth resistor, the second end of the fifth resistor, the second end of the first capacitor and the second end of the thyristor interface are all grounded.
Further, in the data transmission system based on optical fiber multiplexing, the transmission circuit includes: the eighth resistor, the ninth resistor and the first triode;
the first end of the eighth resistor and the first end of the ninth resistor are respectively connected with the sending end of the silicon controlled trigger board;
the second end of the ninth resistor is connected with the first end of the first triode;
a second end of the eighth resistor and a second end of the first triode are both grounded;
and the third end of the first triode is respectively connected with the conduction feedback circuit and the feedback optical fiber assembly.
Further, in the data transmission system based on optical fiber multiplexing, the feedback optical fiber assembly includes: a second fiber optic transceiver, a tenth resistor, and an eleventh resistor;
a first end of the second optical fiber transceiver is respectively connected with a first end of the tenth resistor and a first end of the eleventh resistor;
a second end of the tenth resistor and a second end of the eleventh resistor are both connected to the power supply;
and the second end of the second optical fiber transceiver is respectively connected with the third end of the first triode and the conduction feedback circuit.
Further, in the data transmission system based on optical fiber multiplexing, the conduction feedback circuit includes: a twelfth resistor, a thirteenth resistor, a third capacitor and a second triode;
the open-drain output end of the silicon controlled trigger board is respectively connected with the first end of the twelfth resistor and the first end of the thirteenth resistor;
a second end of the twelfth resistor is connected with the power supply;
a second end of the thirteenth resistor is respectively connected with a first end of the third capacitor and a first end of the second triode;
the second end of the third capacitor and the second end of the second triode are both grounded;
and the third end of the second triode is respectively connected with the third end of the first triode and the second end of the second optical fiber transceiver.
The invention also provides a high-voltage soft start control system, comprising: the main controller and at least one group of high-voltage soft start control components;
the high-voltage soft start control assembly is respectively connected with the main controller and the alternating current power supply;
the high-voltage soft start control assembly comprises: the thyristor combination, the RC circuit and the data transmission system based on optical fiber multiplexing; the number of the thyristor combinations, the number of the RC circuits and the number of the data transmission systems based on optical fiber multiplexing in the high-voltage soft start control component are the same;
the thyristor combination comprises two thyristors which are connected in reverse parallel;
the thyristor combination is connected with the RC circuit in parallel;
the thyristor combination and the main controller are respectively connected with the data transmission system based on optical fiber multiplexing;
the thyristor combination is respectively connected with the main controller and the alternating current power supply.
A data transmission system based on optical fiber multiplexing and a high-voltage soft start control system are provided, the data transmission system based on optical fiber multiplexing comprises: the system comprises a silicon controlled trigger plate, a driver, a driving circuit, a thyristor interface, a sending circuit and an optical fiber distribution plate; the optical fiber distribution plate includes: a trigger fiber assembly and a feedback fiber assembly; the silicon controlled trigger board is respectively connected with the driver and the sending circuit; the driver is connected with the main controller through the triggering optical fiber assembly; the driver is connected with the thyristor interface through the driving circuit; the transmitting circuit is connected with the main controller through the feedback optical fiber assembly; the driver acquires target information corresponding to a thyristor connected with the thyristor interface through a driving circuit according to a data acquisition request sent by the main controller through the triggering optical fiber assembly; the thyristor trigger board receives target information sent by the driver and sends the target information to the main controller through the sending circuit and the feedback optical fiber assembly, and data interaction between the main controller and the thyristor is realized. By adopting the technical scheme of the invention, the data interaction between the thyristor and the main controller can be realized by directly utilizing the triggering optical fiber component and the feedback optical fiber component without arranging a communication optical fiber, so that the communication function can be realized under the condition of not increasing the number of the optical fibers, and the fault occurrence rate and the system construction cost are reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of circuitry provided by one embodiment of a fiber optic multiplexing-based data transmission system of the present invention;
FIG. 2 is a logic diagram of the response of the thyristor trigger plate of FIG. 1;
FIG. 3 is a circuit diagram provided by one embodiment of the optical fiber multiplexing-based data transmission system of the present invention;
FIG. 4 is a block diagram of the circuitry provided by one embodiment of the high voltage soft start control system of the present invention;
FIG. 5 is a fiber optic system topology provided by one embodiment of the high voltage soft start control system of the present invention;
FIG. 6 is a main topology diagram provided by one embodiment of the high voltage soft start control system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a circuit block diagram provided in an embodiment of a data transmission system based on optical fiber multiplexing according to the present invention, and as shown in fig. 1, the data transmission system based on optical fiber multiplexing of the present embodiment includes: thyristor trigger board 101, driver 102, drive circuit 103, thyristor interface 104, transmission circuit 105 and fiber distribution board 106, wherein fiber distribution board 106 includes: a trigger fiber optic assembly 1061 and a feedback fiber optic assembly 1062. The silicon controlled trigger board 101 is respectively connected with the driver 102 and the sending circuit 105; the driver 102 is connected with the master controller 20 by triggering the optical fiber assembly 1061; driver 102 is connected to thyristor interface 104 through drive circuit 103 to connect thyristor 30 using thyristor interface 104; the transmission circuit 105 is connected to the master 20 via a feedback fibre assembly 1062. Wherein the triggering fiber assembly 1061 and the feedback fiber assembly 1062 are connected to the master 20 through optical fibers.
In this embodiment, the master controller 20 may send a data obtaining request to the driver 102 through the triggering optical fiber assembly 1061, the driver 102 collects target information corresponding to the thyristor 30 connected to the thyristor interface 104 according to the data obtaining request, and after the target information is transmitted to the driver 102 through the driving circuit 103, the driver 102 sends the target information to the thyristor triggering board 101. The thyristor trigger board 101 can transmit target information to the master controller 20 through the transmission circuit 105 and the feedback fiber assembly 1062, thereby enabling data interaction between the master controller 20 and the thyristor 30. Wherein the target information may include: the tube voltage drop across the thyristor 30, the current of the RC circuit (resistor-capacitor circuit) connected to the thyristor 30, and the temperature of the thyristor 30.
Further, the data transmission system based on optical fiber multiplexing of the present embodiment further includes: the feedback circuit 107 is turned on. The thyristor trigger board 101 may be connected to the feedback fiber assembly 1062 by turning on the feedback circuit 107 to connect to the master controller 20 through the feedback fiber assembly 1062. The master controller 20 may send a trigger signal to the driver 102 by using the trigger fiber assembly 1061, so that the driver 102 triggers the thyristor 30 connected to the thyristor interface 104 through the driving circuit 103, and then the driver 102 sends a conducting signal to the thyristor trigger board 101; after the thyristor trigger board 101 receives the turn-on signal, it may send a turn-on feedback pulse signal to the main controller 20 through the turn-on feedback circuit 107 and the feedback fiber assembly 1062, so that the main controller 20 may determine whether the thyristor 30 is actually turned on.
In this embodiment, the triggering fiber assembly 1061 that sends a trigger signal may be used to send a data acquisition request to the driver 102 by the master controller 20, and the silicon controlled trigger board 101 may also send target information to the master controller 20 by using the feedback fiber assembly 1062 that sends a conduction feedback pulse signal, so that the triggering fiber assembly 1061 and the feedback fiber assembly 1062 may be used to implement the function of the communication fiber assembly, thereby implementing the function of multiplexing optical fibers, and there is no need to additionally provide the communication fiber assembly for data interaction and signal isolation between the master controller 20 and the thyristor 30.
Further, in the high-voltage soft start control system, two thyristors 30 connected in parallel in reverse are operated as a thyristor combination, so that in the data transmission system based on optical fiber multiplexing of the present embodiment, each thyristor trigger board 101 needs to correspond to two thyristors 30, and the two thyristors 30 are connected in parallel in reverse, and therefore, each thyristor trigger board 101 needs to be correspondingly provided with two trigger optical fiber assemblies 1061 and one feedback optical fiber assembly 1062 to form an optical fiber set, and also needs to be provided with two thyristor interfaces 104 corresponding to the two thyristors 30 one to one. Two trigger fiber assemblies 1061 are also in one-to-one correspondence with the two thyristors 30. In addition, in this embodiment, the number of the thyristor trigger boards 101 may be set according to the number of single set of thyristors in the high-voltage soft start control system, the number of the thyristor trigger boards 101 is at least one, and the numbers of the thyristor trigger boards 101, the driver 102, the driving circuit 103, the sending circuit 105, the conduction feedback circuit 107, the optical fiber set, and the thyristor combinations are the same and are in one-to-one correspondence.
Further, in this embodiment, the time when the main controller 20 sends the data obtaining request should be the preset time duration of the voltage negative half cycle delay, so that it can be ensured that when the voltage of the component in the high-voltage soft start control system is negative, the main controller 20 sends the communication signal (i.e., the data obtaining request) again, thereby implementing time-sharing multiplexing of the data interaction and the trigger signal on the optical fiber set, and ensuring that the thyristor 30 is not triggered during the data interaction. The preset duration of the negative voltage half-cycle delay preset duration is preferably 2.5 ms.
Further, fig. 2 is a response logic diagram of the thyristor trigger board in fig. 1, and fig. 2 is a corresponding logic diagram of the thyristor trigger board 101 drawn by taking the thyristor combination and the number of the thyristor trigger boards 101 as an example, which are both 5. The time when all the main controllers 20 send the data acquisition requests is the same, so the time when all the drivers 102 receive the data acquisition requests is also the same, and all the thyristor trigger boards 101 need to send target information to the main controllers 20 according to the preset sequence, and the time when every two connected thyristor trigger boards 101 in the preset sequence send the target information to the main controllers 20 is separated by a preset interval duration. As shown in fig. 2, Tx _ M is a master controller request frame of the master controller 20, and it can be seen that at the time of sending a data acquisition request, 5 groups of thyristor trigger boards 101 are respectively No. 1 station to No. 5 station, and the preset sequence is also a pre-arranged sequence of 1 to 5, where the sequence corresponding to each group of thyristor trigger boards 101 is defined in a host data packet carried when the master controller 20 sends the data acquisition request. The response time sequence of the station No. 1 to the station No. 5 corresponds to Tx1-Tx5, Rx _ M is the time sequence when the main controller 20 receives the target information sent by the 5 groups of silicon controlled trigger boards 101, and the main controller 20 can receive 5 groups of target information with continuous time sequence and intervals. In this embodiment, according to the different station numbers of the thyristor trigger board 101, different time windows are occupied during communication, and 5-way responses are achieved, which do not affect each other, thereby improving the accuracy of data transmission.
Further, fig. 3 is a circuit diagram provided in an embodiment of the data transmission system based on optical fiber multiplexing according to the present invention, and as shown in fig. 3, in the data transmission system based on optical fiber multiplexing according to the present embodiment, the triggering optical fiber assembly 1061 includes: a first fiber optic transceiver FR and a first resistor R1; the drive circuit 103 includes: a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a voltage stabilizing diode DZ, a MOS transistor Q3, a first diode D1, a first capacitor C1 and a second capacitor C2; the transmission circuit 105 includes: an eighth resistor R8, a ninth resistor R9 and a first triode Q1; the feedback fiber assembly 1062 includes: a second fiber optic transceiver FT, a tenth resistor R10 and an eleventh resistor R11; the turn-on feedback circuit 107 includes: a twelfth resistor R12, a thirteenth resistor R13, a third capacitor C3 and a second triode Q2; the driver 102 is a chip U1 in fig. 3, and the pins of the chip U1 include: NC, NC,
VCC、OUTB、NC、INA、GND、INB。
The first end of the first optical fiber transceiver FR is respectively connected with the first end of the first resistor R1 and the power supply (5V-1); the second end of the first optical fiber transceiver FR is respectively connected to the second end of the first resistor R1, the first end of the driver 102 (i.e., the pin INA of the chip U1), and the receiving end of the triac trigger board 101; the third terminal of the first fiber transceiver FR is grounded.
The second terminal of driver 102 (i.e., pin of chip U1)
) The first end of the voltage stabilizing diode DZ, the first end of the third resistor R3 and the first end of the MOS transistor Q3 are respectively connected with a second resistor R2; a second end of the MOS transistor Q3 is connected to a first end of the second capacitor C2 and a first end of the seventh resistor R7 through a sixth resistor R6, respectively; a second end of the second capacitor C2 and a second end of the seventh resistor R7 are both connected with a power supply (Vcc); the third end of the MOS transistor Q3 is connected to the first end of the fourth resistor R4, the first end of the fifth resistor R5, the first end of the first capacitor C1, and the first end of the first diode D1, respectively; a second terminal of first diode D1 is connected to a first terminal of thyristor interface 104; the second terminal of the zener diode DZ, the second terminal of the third resistor R3, the second terminal of the fourth resistor R4, the second terminal of the fifth resistor R5, the second terminal of the first capacitor C1, and the second terminal of the thyristor interface 104 are all grounded.
The first end of the eighth resistor R8 and the first end of the ninth resistor R9 are respectively connected with the transmitting end of the thyristor trigger board 101; a second end of the ninth resistor R9 is connected to a first end of the first transistor Q1; a second end of the eighth resistor R8 and a second end of the first transistor Q1 are both grounded; the third end of the first triode Q1 is respectively connected with the third end of the second triode Q2 and the second end of the second fiber transceiver FT; a first terminal of the second fiber optic transceiver FT is connected to a first terminal of a tenth resistor R10 and a first terminal of an eleventh resistor R11, respectively; a second terminal of the tenth resistor R10 and a second terminal of the eleventh resistor R11 are both connected to a power supply (5V-1).
The open-drain output end of the thyristor trigger board 101 is respectively connected with the first end of the twelfth resistor R12 and the first end of the thirteenth resistor R13; the second end of the twelfth resistor R12 is connected with a power supply (5V-1); a second end of the thirteenth resistor R13 is respectively connected to the first end of the third capacitor C3 and the first end of the second transistor Q2; the second terminal of the third capacitor C3 and the second terminal of the second transistor Q2 are both grounded. In fig. 3, UART _ T is transmitting using a UART transmitter, and UART _ R is receiving using a UART transmitter.
Further, in this embodiment, the first optical fiber transceiver FR is preferably of HFBR-2521Z type, the second optical fiber transceiver FT is preferably of HFBR-1521Z type, and the driver 102 is preferably of IXDF602SIA type.
The data transmission system based on optical fiber multiplexing of the embodiment includes: the thyristor trigger board 101, the driver 102, the driving circuit 103, the thyristor interface 104, the transmitting circuit 105 and the optical fiber distribution board 106; the fiber distribution plate 106 includes: a trigger fiber optic assembly 1061 and a feedback fiber optic assembly 1062. The driver 102 acquires target information corresponding to the thyristor 30 connected to the thyristor interface 104 through the driving circuit 103 according to a data acquisition request sent by the master controller 20 through the triggering fiber assembly 1061; the thyristor trigger board 101 receives the target information sent by the driver 102, and sends the target information to the master controller 20 through the sending circuit 105 and the feedback fiber assembly 1062, so as to realize data interaction between the master controller 20 and the thyristor 30. By adopting the technical scheme of the embodiment, the triggering optical fiber assembly 1061 and the feedback optical fiber assembly 1062 can be directly utilized to realize data interaction between the thyristor 30 and the main controller 20, so that an optical fiber multiplexing function is realized, and a communication optical fiber is not required to be arranged, so that the communication function can be realized under the condition of not increasing the number of optical fibers, and the failure occurrence rate and the system construction cost are reduced.
The invention further provides a high-voltage soft start control system corresponding to the data transmission system based on optical fiber multiplexing provided by the embodiment of the invention.
Fig. 4 is a circuit block diagram provided in an embodiment of the high-voltage soft start control system of the present invention, and as shown in fig. 4, the high-voltage soft start control system of the present embodiment includes: a main controller 20 and at least one group of high-voltage soft start control components 1. The high voltage soft start control module 1 is connected to the main controller 20 and the AC power source 40, wherein the AC power source is preferably AC10kV, 50Hz high voltage AC power source. The high-voltage soft start control assembly 1 includes: thyristor combination 11, RC circuit 12 and the optical fiber multiplexing based data transmission system 10 described in the above embodiments. Wherein the thyristor assembly 11 comprises two thyristors connected in anti-parallel. The thyristor combination 11 and the main controller 20 are respectively connected with the data transmission system 10 based on optical fiber multiplexing; the thyristor assembly 11 is connected to the master controller 20 and the ac power source 40, respectively. In this embodiment, the number of thyristor combinations 11 and the number of RC circuits 12 in each group of high-voltage soft start control assemblies 1 are the same as the number of data transmission systems 10 based on optical fiber multiplexing. In this embodiment, the master controller 20 is preferably a high voltage soft starter.
Fig. 6 is a main topological diagram provided by an embodiment of the high-voltage soft-start control system of the present invention, and as shown in fig. 6, in this embodiment, the number of the high-voltage soft-start control components 1 is 3 groups, and the number of the thyristor combinations 11, the number of the RC circuits 12, and the number of the data transmission systems 10 based on optical fiber multiplexing in each group of the high-voltage soft-start control components 1 are all 5 as an example. The data transmission system 10 based on optical fiber multiplexing is not shown in fig. 6, but according to the contents in the foregoing embodiments, the connection relationship between the data transmission system 10 based on optical fiber multiplexing and other components can be known, and details are not described in this embodiment.
FIG. 5 is a topology diagram of an optical fiber system provided by an embodiment of the high voltage soft start control system of the present invention, as shown in FIG. 5, DA1-DA5, DB1-DB5, DCA-DC5 are all drivers 102; OPF _ A, OPF _ B, OPF _ C is a fiber distribution board in each group of high-voltage soft start control assemblies 1; SCR _ A1-SCR _ A5, SCR _ B1-SCR _ B5 and SCR _ C1-SCR _ C5 are all thyristor combinations 11 in each group of high-voltage soft start control components 1.
In this embodiment, the transmitting optical fiber is connected to the triggering optical fiber component in the data transmission system 10 based on optical fiber multiplexing, and the receiving optical fiber is connected to the feedback optical fiber component in the data transmission system 10 based on optical fiber multiplexing.
Taking 3 sets of high voltage soft start control modules 1 as an example, the scic _ tx signal is the request sending signal of the master 20, the scic _ tx signal is modulated by scic _ sel [0], scic _ sel [1], scic _ sel [2], en _ pwm0 is the run signal, rst is the hardware reset signal, pwm _ out [0] -pwm _ out [5] is the pulse trigger signal, and the sending fiber HDL program is:
assign pwm_out[0]＝(！en_pwm0&rst)？(pwm_in[0]):scic_tx|scic_sel[0]；
assign pwm_out[1]＝(！en_pwm0&rst)？(pwm_in[1]):6'b1；
assign pwm_out[2]＝(！en_pwm0&rst)？(pwm_in[2]):scic_tx|scic_sel[1]；
assign pwm_out[3]＝(！en_pwm0&rst)？(pwm_in[3]):6'b1；
assign pwm_out[4]＝(！en_pwm0&rst)？(pwm_in[4]):scic_tx|scic_sel[2]；
assign pwm_out[5]＝(！en_pwm0&rst)？(pwm_in[5]):6'b1；
the received fiber HDL program is:
wherein, feb _ ai, feb _ bi, feb _ ci are signals corresponding to the target information of the 3 groups of high-voltage soft start control components 1 received by the master controller 20.
The high-voltage soft start control system of the embodiment comprises: a main controller 20 and at least one group of high-voltage soft start control components 1; the high-voltage soft start control assembly 1 includes: thyristor combination 11, RC circuit 12 and the optical fiber multiplexing based data transmission system 10 described in the above embodiments. By adopting the technical scheme of the embodiment, the triggering optical fiber component 1061 and the feedback optical fiber component 1062 can be directly utilized to realize data interaction between the thyristor assembly 11 and the main controller 20, so that an optical fiber multiplexing function is realized, and a communication optical fiber is not required to be arranged, so that the communication function can be realized under the condition of not increasing the number of optical fibers, and the failure occurrence rate and the system construction cost are reduced.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A data transmission system based on optical fiber multiplexing, comprising: the system comprises a silicon controlled trigger plate, a driver, a driving circuit, a thyristor interface, a sending circuit and an optical fiber distribution plate;
the optical fiber distribution plate includes: a trigger fiber assembly and a feedback fiber assembly;
the silicon controlled trigger board is respectively connected with the driver and the sending circuit;
the driver is connected with the main controller through the triggering optical fiber assembly;
the driver is connected with the thyristor interface through the driving circuit;
the transmitting circuit is connected with the main controller through the feedback optical fiber assembly;
the driver is used for acquiring target information corresponding to the thyristor connected with the thyristor interface through the driving circuit according to a data acquisition request sent by the main controller through the triggering optical fiber assembly;
the silicon controlled trigger board is used for receiving target information sent by the driver and sending the target information to the main controller through the sending circuit and the feedback optical fiber assembly, so that data interaction between the main controller and the thyristor is realized.
2. The optical fiber multiplexing-based data transmission system according to claim 1, further comprising: turning on the feedback circuit;
the silicon controlled trigger board is connected with the feedback optical fiber component through the conduction feedback circuit;
the feedback optical fiber assembly is connected with the master controller;
the main controller sends a trigger signal to the driver by using the trigger optical fiber assembly so that the driver triggers the thyristor connected with the thyristor interface through the drive circuit;
after the thyristor is triggered, the driver sends a conducting signal to the thyristor trigger plate;
the thyristor trigger board sends a conduction feedback pulse signal to the main controller through the conduction feedback circuit and the feedback optical fiber assembly, so that the main controller judges whether the thyristor is conducted or not.
3. The optical fiber multiplexing-based data transmission system of claim 2, wherein the number of the thyristor trigger boards is at least one; the silicon controlled trigger plates, the driver, the driving circuit, the sending circuit, the conduction feedback circuit and the feedback optical fiber assemblies are the same in number and are in one-to-one correspondence;
each thyristor trigger plate corresponds to two thyristor interfaces and two trigger optical fiber assemblies, and each thyristor interface is connected with a thyristor; the two thyristors connected with the two thyristor interfaces are reversely connected in parallel to form a thyristor combination;
the two trigger optical fiber assemblies corresponding to each silicon controlled trigger board and the feedback optical fiber assembly form an optical fiber set, and the number of the optical fiber sets contained in the optical fiber distribution board is the same as that of the silicon controlled trigger boards and corresponds to the silicon controlled trigger boards one by one.
4. The optical fiber multiplexing-based data transmission system according to claim 3, wherein the time when the master controller sends the data acquisition request is a preset duration of voltage negative half cycle delay, so as to implement optical fiber time division multiplexing of the data acquisition request sending and the trigger signal sending;
all the drivers receive the data acquisition requests sent by the master controller at the same time, all the silicon controlled trigger boards send the target information to the master controller in sequence according to a preset sequence, and the time when every two adjacent silicon controlled trigger boards send the target information to the master controller in the preset sequence is separated by a preset interval duration.
5. The fiber optic multiplexing-based data transmission system of claim 2 wherein the trigger fiber optic assembly comprises: a first fiber optic transceiver and a first resistor;
the first end of the first optical fiber transceiver is respectively connected with the first end of the first resistor and a power supply;
the second end of the first optical fiber transceiver is respectively connected with the second end of the first resistor, the first end of the driver and the receiving end of the silicon controlled trigger board;
and the third end of the first optical fiber transceiver is grounded.
6. The optical fiber multiplexing-based data transmission system according to claim 5, wherein the driving circuit comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a voltage stabilizing diode, an MOS (metal oxide semiconductor) tube, a first diode, a first capacitor and a second capacitor;
the second end of the driver is respectively connected with the first end of the voltage stabilizing diode, the first end of the third resistor and the first end of the MOS tube through the second resistor;
the second end of the MOS tube is respectively connected with the first end of the second capacitor and the first end of the seventh resistor through the sixth resistor;
the second end of the second capacitor and the second end of the seventh resistor are both connected with the power supply;
the third end of the MOS tube is respectively connected with the first end of the fourth resistor, the first end of the fifth resistor, the first end of the first capacitor and the first end of the first diode;
the second end of the first diode is connected with the first end of the thyristor interface;
the second end of the voltage stabilizing diode, the second end of the third resistor, the second end of the fourth resistor, the second end of the fifth resistor, the second end of the first capacitor and the second end of the thyristor interface are all grounded.
7. The optical fiber multiplexing-based data transmission system of claim 6 wherein the transmit circuit comprises: the eighth resistor, the ninth resistor and the first triode;
the first end of the eighth resistor and the first end of the ninth resistor are respectively connected with the sending end of the silicon controlled trigger board;
the second end of the ninth resistor is connected with the first end of the first triode;
a second end of the eighth resistor and a second end of the first triode are both grounded;
and the third end of the first triode is respectively connected with the conduction feedback circuit and the feedback optical fiber assembly.
8. The fiber optic multiplexing-based data transmission system of claim 7 wherein the feedback fiber assembly comprises: a second fiber optic transceiver, a tenth resistor, and an eleventh resistor;
a first end of the second optical fiber transceiver is respectively connected with a first end of the tenth resistor and a first end of the eleventh resistor;
a second end of the tenth resistor and a second end of the eleventh resistor are both connected to the power supply;
and the second end of the second optical fiber transceiver is respectively connected with the third end of the first triode and the conduction feedback circuit.
9. The optical fiber multiplexing-based data transmission system of claim 8 wherein the turn-on feedback circuit comprises: a twelfth resistor, a thirteenth resistor, a third capacitor and a second triode;
the open-drain output end of the silicon controlled trigger board is respectively connected with the first end of the twelfth resistor and the first end of the thirteenth resistor;
a second end of the twelfth resistor is connected with the power supply;
a second end of the thirteenth resistor is respectively connected with a first end of the third capacitor and a first end of the second triode;
the second end of the third capacitor and the second end of the second triode are both grounded;
and the third end of the second triode is respectively connected with the third end of the first triode and the second end of the second optical fiber transceiver.
10. A high pressure soft start control system, comprising: the main controller and at least one group of high-voltage soft start control components;
the high-voltage soft start control assembly is respectively connected with the main controller and the alternating current power supply;
the high-voltage soft start control assembly comprises: a thyristor combination, an RC circuit and an optical fibre multiplexing based data transmission system as claimed in any of claims 1 to 9; the number of the thyristor combinations, the number of the RC circuits and the number of the data transmission systems based on optical fiber multiplexing in the high-voltage soft start control component are the same;
the thyristor combination comprises two thyristors which are connected in reverse parallel;
the thyristor combination is connected with the RC circuit in parallel;
the thyristor combination and the main controller are respectively connected with the data transmission system based on optical fiber multiplexing;
the thyristor combination is respectively connected with the main controller and the alternating current power supply.
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