CN112865779A - Signal conversion circuit and conversion device - Google Patents
Signal conversion circuit and conversion device Download PDFInfo
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Abstract
The invention discloses a signal conversion circuit and a conversion device. The photoelectric conversion circuit is started when receiving the level signal, converts the received level signal into an optical signal with a preset wavelength, and transmits the optical signal to the photoelectric conversion circuit through an optical fiber, and the photoelectric conversion circuit is started when receiving the optical signal with the preset wavelength and converts the optical signal into the level signal. According to the technical scheme, the level signal is transmitted from one side to the other side through the optical fiber in a photoelectric isolation mode, so that the isolation of electromagnetic interference is realized, and the electromagnetic interference is prevented from entering a wire.
Description
Technical Field
The present invention relates to the field of electronic circuits, and in particular, to a signal conversion circuit and a signal conversion device.
Background
In the field of scientific research and test, in order to guarantee special experiments or working condition limitation, an operation room and a test room are required to be separated to guarantee safety and special environmental conditions. However, communication and control signal paths are inevitably needed to be established between the operation room and the test room so as to realize the requirements of control and observation.
The transmission of these signals often takes the form of shielded cable transmissions. Although the electromagnetic interference of the test chamber is restrained in the modes of shielding the twisted pair wires and the magnetic ring through the waveguide holes, the electromagnetic interference is inevitably introduced into a clean test chamber. This may have an uncertain effect on the final result in the fields of EMC, magnetic resonance, ultra-weak magnetic detection, etc.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a signal conversion circuit and a signal conversion device, and aims to solve the technical problem that electromagnetic interference is easily caused by a shielding cable in the existing test field.
In order to achieve the above object, the present invention provides a signal conversion circuit, which includes an electro-optical conversion circuit, an optical fiber, and an electro-optical conversion circuit; wherein
The electro-optical conversion circuit is used for being started when a level signal is received and converting the received level signal into an optical signal with a preset wavelength;
the optical fiber is used for transmitting the optical signal to a photoelectric conversion circuit;
and the photoelectric conversion circuit is used for starting when receiving the optical signal with the preset wavelength and converting the optical signal into a level signal.
Preferably, the signal conversion circuit includes a plurality of electro-optical conversion circuits and a plurality of photoelectric conversion circuits; the photoelectric conversion circuits are connected with one end of the optical fiber, and the photoelectric conversion circuits are connected with the other end of the optical fiber.
Preferably, the preset wavelengths of the optical signals output to the optical fiber by the plurality of electrical-to-optical conversion circuits are different from each other.
Preferably, the electro-optical conversion circuit comprises a base resistor, a triode, a collector resistor, a semiconductor laser and a first power supply; the first end of the base resistor receives a level signal, the second end of the base resistor is connected with the base of the triode, the collector of the triode is connected with the first end of the collector resistor, the second end of the collector resistor is connected with the anode of the semiconductor laser, the cathode of the semiconductor laser is grounded, and the emitter of the semiconductor laser is coupled with the optical coupling device of the optical fiber; and the drain electrode of the triode is connected with the first power supply.
Preferably, the relationship between the resistance of the collector resistor, the voltage amplitude of the level signal, and the base current when the triode is turned on is as follows:
wherein, R1 is the resistance of the collector resistor, Vignal is the amplitude of the level signal, and IBT is the base current when the triode is turned on.
Preferably, the relationship between the resistance value of the collector resistor, the first power supply voltage, and the rated operating current of the semiconductor laser is as follows:
wherein RA is the resistance of the collector resistor, VCC1 is the first power supply voltage, and IDA is the rated operating current of the semiconductor laser.
Preferably, the photoelectric conversion circuit includes a photodiode, a first voltage-dividing resistor, a second voltage-dividing resistor, and a second power supply; the anode of the photodiode is connected with the second power supply, the cathode of the photodiode is connected with the first end of the first divider resistor, and the photodiode is further coupled with the end of an optical fiber; the second end of the first voltage-dividing resistor is connected with the first end of the second voltage-dividing resistor, and the second end of the second voltage-dividing resistor is grounded.
Preferably, the relationship among the voltage amplitude of the level signal, the first voltage-dividing resistor, the second voltage-dividing resistor, and the second power supply is as follows:
wherein, Vignal is the voltage amplitude of the level signal, Rup is the first divider resistor, Rdown is the second divider resistor, and VCC2 is the second power supply voltage.
Preferably, the first power supply and the second power supply are powered by the same power source.
In order to achieve the above object, the present invention further provides a conversion apparatus, which includes the signal conversion circuit as described above.
The invention provides a signal conversion circuit which comprises an electro-optical conversion circuit, an optical fiber and a photoelectric conversion circuit. The photoelectric conversion circuit is started when receiving the level signal, converts the received level signal into an optical signal with a preset wavelength, and transmits the optical signal to the photoelectric conversion circuit through an optical fiber, and the photoelectric conversion circuit is started when receiving the optical signal with the preset wavelength and converts the optical signal into the level signal. According to the technical scheme, the level signal is transmitted from one side to the other side through the optical fiber in a photoelectric isolation mode, so that the isolation of electromagnetic interference is realized, and the electromagnetic interference is prevented from entering a wire.
Drawings
FIG. 1 is a block diagram of a signal conversion circuit according to an embodiment of the present invention;
FIG. 2 is a specific circuit diagram of a signal conversion circuit according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of an embodiment of an electro-optic conversion circuit;
fig. 4 is a circuit structure diagram of an embodiment of the photoelectric conversion circuit.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 100 | Electro-optical conversion circuit | | Collector resistance | |
| 200 | Optical fiber | DA | |
|
| 300 | Photoelectric conversion circuit | DR | |
|
| 400 | Operation control system | Rup | First |
|
| 500 | Experiment testing device | Rdown | Second voltage dividing resistor | |
| R1 | Base electrode resistor | VCC1 | First power supply | |
| T1 | Triode transistor | VCC2 | Second power supply |
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may be explicitly or implicitly included
At least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a signal conversion circuit.
Referring to fig. 1, the present invention provides a signal conversion circuit including an electro-optical conversion circuit, an optical fiber, and an electro-optical conversion circuit.
The electro-optical conversion circuit 100 is configured to turn on when receiving a level signal, and convert the received level signal into an optical signal with a preset wavelength. It is understood that the electrical-to-optical conversion circuit 100 is turned off when the electrical-to-optical conversion circuit 100 does not receive the level signal.
The optical fiber 200 is used for transmitting the optical signal to the photoelectric conversion circuit. The optical fiber 200 includes an optical coupling device at one end thereof to receive and transmit the optical signal output from the electrical-to-optical conversion circuit 100. The other end of the optical fiber 200 is further provided with an optical fiber tip for outputting optical signals.
The photoelectric conversion circuit 300 is configured to be turned on when receiving the optical signal with the preset wavelength, and convert the optical signal into a level signal. It is noted that the optical fiber tip is covered with a film that allows passage of a specific wavelength, based on which the photoelectric conversion circuit 300 can receive an optical signal of a predetermined wavelength.
It should be noted that, in the test, the electro-optical conversion circuit 100 is disposed in the operation room, the electro-optical conversion circuit 300 is disposed in the test room, and the operation room and the test room are connected by an optical fiber. The control signal output by the operation control system is received by the electro-optical conversion circuit 100, converted into an optical signal, transmitted to the photoelectric conversion circuit 300 through the optical fiber 200, restored to a level signal through the photoelectric conversion circuit 300, and finally received by the experimental test device. In the scheme, an electro-optical-to-photoelectric conversion method is adopted, electro-optical conversion is firstly carried out to convert a controlled electric signal into an optical signal, the optical signal is transmitted into a test room through an optical fiber 200, the optical signal is converted into the electric signal through the electro-optical conversion, and the electric signal is communicated with equipment in an operation room or an actuating mechanism is controlled to act. Thereby realizing complete electrical isolation between the operation room and the experiment room.
Further, the communication between the operating room and the test room may also be bidirectional, i.e. the experimental test device may also output control signals to the operation control system. Therefore, the electro-optical conversion circuit 100 is provided on the side of the experimental test apparatus, and the electro-optical conversion circuit 300 is provided on the side of the operation control system, whereby bidirectional control between the operation room and the test room can be realized.
The invention provides a signal conversion circuit which comprises an electro-optical conversion circuit 100, an optical fiber and an optical-electrical conversion circuit 300. The electro-optical conversion circuit 100 is turned on when receiving a level signal, converts the received level signal into an optical signal with a preset wavelength, and transmits the optical signal to the electro-optical conversion circuit 300 through the optical fiber 200, and the electro-optical conversion circuit 300 is turned on when receiving the optical signal with the preset wavelength, and converts the optical signal into the level signal. According to the technical scheme, the level signal is transmitted from one side to the other side through the optical fiber in a photoelectric isolation mode, so that the isolation of electromagnetic interference is realized, and the electromagnetic interference is prevented from entering a wire.
Further, the signal conversion circuit includes a plurality of electro-optical conversion circuits 100 and a plurality of photoelectric conversion circuits 300; the plurality of electro-optical conversion circuits 100 are connected to one end of the optical fiber 200, and the plurality of electro-optical conversion circuits 300 are connected to the other end of the optical fiber 200. The predetermined wavelengths of the optical signals output to the optical fibers by the plurality of electrical-to-optical conversion circuits 100 are different from each other.
It should be noted that, according to actual needs, when multiple test signals need to be transmitted, multiple corresponding electro-optical conversion circuits 100 are needed, the corresponding multiple test signals are converted into optical signals with different preset wavelengths, and a wavelength division multiplexing technology is adopted to transmit the optical signals by using one optical fiber together.
Referring to fig. 2, specifically, the electro-optical conversion circuit 100 includes a base resistor R1, a transistor T1, a collector resistor RA, a semiconductor laser DA, and a first power supply VCC 1; a first end of the base resistor R1 receives a level signal, a second end of the base resistor R1 is connected with a base of the triode T1, a collector of the triode T1 is connected with a first end of the collector resistor RA, a second end of the collector resistor RA is connected with an anode of the semiconductor laser DA, a cathode of the semiconductor laser DA is grounded, and an emitter of the semiconductor laser DA is coupled with an optical coupling device of an optical fiber; the drain of the transistor T1 is connected to the first power supply VCC 1. In this embodiment, the transistor T1 is an NPN transistor T1.
When the level signal is at a high level, current flows through R1 and enters the base electrode of the triode T1, and the triode T1 is conducted; the current provided by VCC1 enters the emitter through the collector of T1, then passes through RA and semiconductor laser DA, so that the laser emits laser with specific wavelength, and enters the optical fiber 1 through the optical coupling device; when the level signal is at a low level, no current flows through R1 and enters the base electrode of the triode T1, and the triode T1 is closed; energy which cannot be provided by VCC1 enters the emitter through the collector of T1 and then passes through RA and semiconductor laser DA, the laser is turned off, and no laser beam enters the optical fiber through the optical coupling device.
Further, the relationship between the resistance of the collector resistor RA, the voltage of the first power supply VCC1, and the base current when the transistor T1 is turned on is as follows:
wherein, R1 is the resistance of the collector resistor, Vignal is the amplitude of the level signal, and IBT is the base current when the transistor T1 is turned on. Therefore, the resistance of R1 should be determined according to the high signal amplitude of Vignal and the current of the T1 transistor T1 conducting time base.
Further, the relationship between the resistance value of the collector resistor RA, the voltage of the first power supply VCC1, and the rated operating current of the semiconductor laser DA is as follows:
wherein, RA is the resistance value of the collector resistor RA, VCC1 is the voltage of the first power supply VCC1, and IDA is the rated working current of the semiconductor laser DA. The resistance of RA is selected based on the supply voltage VCC1 and the rated operating current of the laser DA during normal operation.
Specifically, the photoelectric conversion circuit 300 includes a photodiode DR, a first voltage-dividing resistor Rup, a second voltage-dividing resistor Rdown, and a second power supply VCC 2; the anode of the photodiode DR is connected with the second power supply VCC2, the cathode of the photodiode DR is connected with the first end of the first voltage-dividing resistor Rup, and the photodiode DR is further coupled with the end of an optical fiber; the second end of the first voltage-dividing resistor Rup is connected with the first end of the second voltage-dividing resistor Rdown, and the second end of the second voltage-dividing resistor Rdown is grounded.
Preferably, the relationship among the voltage of the first power supply VCC1, the first voltage dividing resistor Rup, the second voltage dividing resistor Rdown, and the second power supply VCC2 is:
wherein, Vignal is the voltage of a first power supply VCC1, Rup is a first voltage dividing resistor Rup, Rdown is a second voltage dividing resistor Rdown, and VCC2 is the voltage of a second power supply VCC 2.
Referring to fig. 3 and 4, when the number of signal paths to be transmitted is large, a signal transmission array may be configured by using a plurality of electro-optical conversion circuits 100, a plurality of optical fibers 200, and a plurality of electro-optical conversion circuits 100. It is understood that several electro-optical conversion circuits 100 and several electro-optical conversion circuits 100 are connected to each optical fiber, and the laser wavelengths of the signals transmitted on the same optical fiber are different from each other.
The working principle of the photoelectric module is illustrated by taking Vignal1-1 as an example, a coated branch optical fiber of a port is separated from the optical fiber, and the end of the optical fiber which is connected and coupled with the photodiode DR is coated on the branch 1 of the optical fiber, wherein the coated film is a selective transmission film and can only pass laser with the wavelength of the laser wavelength emitted by the DA in the photoelectric module. Therefore, in normal operation, if there is a signal with a DA rated wavelength in the fiber, the diode DR is turned on and the voltage of Vignal is
If no signal with the rated wavelength of DA is present in the optical fiber 1, the diode DR is turned off, and the voltage of Vignal is 0. The output logic of the photoelectric conversion circuit is consistent with the input end of the corresponding signal of the electro-optical module, and the conversion work of the photoelectric-electro-optical signal is realized.
DA-1 and DA-2 … … DA-N are semiconductor lasers DA with different rated wavelengths. Therefore, the optical fiber 1 branch 2, the optical fiber 1 branch 3 … …, the optical fiber 1 branch N and the optical fiber end coupled to the photodiode DR are coated with the film which is selected to penetrate through the corresponding rated wavelength, so that the wavelength division multiplexing signal can be decoded and input to the corresponding port. The decoupling of signals in the optical fibers 2 to N can adopt the method.
If the corresponding photodiode DR is replaced with a photodiode DR sensitive only to the corresponding wavelength, the reliability and stability of system transmission can be further improved.
The proportion of Rup and Rdown is determined by the electrical requirements of the corresponding input pin of the test device in the experimental room, and the total Rup and Rdown resistance values can be determined by VCC2 and the normal working rated current of the diode DR. The unknowns are equal in number to the equations and have a fixed solution. The selection of other resistors can be selected by referring to the selection method of the method.
In this embodiment, the first power supply VCC1 and the second power supply VCC2 are supplied from the same power supply. In this case, the interference of the power supply to the signal conversion circuit can be reduced.
In order to achieve the above object, the present invention further provides a conversion apparatus, which includes the signal conversion circuit as described above. The specific structure of the signal conversion circuit refers to the above-described embodiments. The conversion device comprises the beneficial effects which can be achieved by the signal conversion circuit.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A signal conversion circuit is characterized by comprising an electro-optical conversion circuit, an optical fiber and a photoelectric conversion circuit; wherein
The electro-optical conversion circuit is used for being started when a level signal is received and converting the received level signal into an optical signal with a preset wavelength;
the optical fiber is used for transmitting the optical signal to a photoelectric conversion circuit;
and the photoelectric conversion circuit is used for starting when receiving the optical signal with the preset wavelength and converting the optical signal into a level signal.
2. The signal conversion circuit according to claim 1, wherein the signal conversion circuit includes a plurality of electro-optical conversion circuits and a plurality of photoelectric conversion circuits; the photoelectric conversion circuits are connected with one end of the optical fiber, and the photoelectric conversion circuits are connected with the other end of the optical fiber.
3. The signal conversion circuit of claim 2, wherein the predetermined wavelengths of the optical signals output to the optical fiber by the plurality of electrical-to-optical conversion circuits are different from each other.
4. The signal conversion circuit according to claim 2, wherein the electro-optical conversion circuit comprises a base resistor, a triode, a collector resistor, a semiconductor laser, and a first power supply; the first end of the base resistor receives a level signal, the second end of the base resistor is connected with the base of the triode, the collector of the triode is connected with the first end of the collector resistor, the second end of the collector resistor is connected with the anode of the semiconductor laser, the cathode of the semiconductor laser is grounded, and the emitter of the semiconductor laser is coupled with the optical coupling device of the optical fiber; and the drain electrode of the triode is connected with the first power supply.
5. The signal conversion circuit according to claim 4, wherein the resistance of the collector resistor, the voltage amplitude of the level signal and the base current when the transistor is turned on are related as follows:
wherein, R1 is the resistance of the collector resistor, Vignal is the amplitude of the level signal, and IBT is the base current when the triode is turned on.
6. The signal conversion circuit of claim 5, wherein the resistance of the collector resistor, the first power supply voltage, and the rated operating current of the semiconductor laser are related by:
wherein RA is the resistance of the collector resistor, VCC1 is the first power supply voltage, and IDA is the rated operating current of the semiconductor laser.
7. The signal conversion circuit according to claim 6, wherein the photoelectric conversion circuit includes a photodiode, a first voltage-dividing resistor, a second voltage-dividing resistor, and a second power supply; the anode of the photodiode is connected with the second power supply, the cathode of the photodiode is connected with the first end of the first divider resistor, and the photodiode is further coupled with the end of an optical fiber; the second end of the first voltage-dividing resistor is connected with the first end of the second voltage-dividing resistor, and the second end of the second voltage-dividing resistor is grounded.
8. The signal conversion circuit of claim 7, wherein the voltage amplitude of the level signal, the first voltage dividing resistor, the second voltage dividing resistor, and the second power supply are related to each other by:
wherein, Vignal is the voltage amplitude of the level signal, Rup is the first divider resistor, Rdown is the second divider resistor, and VCC2 is the second power supply voltage.
9. The signal conversion circuit of claim 1, wherein the first power supply and the second power supply are powered by the same power source.
10. A conversion apparatus, characterized in that the conversion apparatus comprises a signal conversion circuit according to any one of claims 1 to 9.
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| CN202110013826.1A CN112865779A (en) | 2021-01-06 | 2021-01-06 | Signal conversion circuit and conversion device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110268451A1 (en) * | 2008-10-09 | 2011-11-03 | Silicon Line Gmbh | Circuit arrangement and method for transmitting tmds encoded signals |
| JP2016225817A (en) * | 2015-05-29 | 2016-12-28 | 三菱電機株式会社 | Optical microwave transmitter |
| CN108092720A (en) * | 2017-12-20 | 2018-05-29 | 郑州舒柯科技有限公司 | A kind of fibre optic data transmission 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 |
| CN109547113A (en) * | 2019-01-21 | 2019-03-29 | 中国科学技术大学 | The transmission method and Transmission system of DC reference signal |
-
2021
- 2021-01-06 CN CN202110013826.1A patent/CN112865779A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110268451A1 (en) * | 2008-10-09 | 2011-11-03 | Silicon Line Gmbh | Circuit arrangement and method for transmitting tmds encoded signals |
| JP2016225817A (en) * | 2015-05-29 | 2016-12-28 | 三菱電機株式会社 | Optical microwave transmitter |
| CN108092720A (en) * | 2017-12-20 | 2018-05-29 | 郑州舒柯科技有限公司 | A kind of fibre optic data transmission 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 |
| CN109547113A (en) * | 2019-01-21 | 2019-03-29 | 中国科学技术大学 | The transmission method and Transmission system of DC reference signal |
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