CN211014403U - Photoelectric isolation anti-interference module and device under strong electromagnetic environment - Google Patents
Photoelectric isolation anti-interference module and device under strong electromagnetic environment Download PDFInfo
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- CN211014403U CN211014403U CN201921951443.3U CN201921951443U CN211014403U CN 211014403 U CN211014403 U CN 211014403U CN 201921951443 U CN201921951443 U CN 201921951443U CN 211014403 U CN211014403 U CN 211014403U
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- 238000002955 isolation Methods 0.000 title claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims description 77
- 230000003287 optical effect Effects 0.000 claims description 37
- 230000005693 optoelectronics Effects 0.000 claims description 13
- 230000036039 immunity Effects 0.000 claims description 10
- 239000000835 fiber Substances 0.000 abstract description 20
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012937 correction Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model discloses a photoelectric isolation anti-interference module and a device under strong electromagnetic environment, which relates to the field of photoelectric isolation anti-interference devices, comprising a light signal input port, a drive circuit, a fiber transmitter, a fiber receiver and a light signal output port, wherein the output end of the light signal input port is electrically connected with the input end of the drive circuit, the output end of the drive circuit is connected with the input end of the fiber transmitter, the output end of the fiber transmitter is connected with the input end of the fiber receiver through the fiber, and the output end of the fiber receiver is connected with the input end of the light signal output port, the utility model utilizes the fiber transmitter, the fiber receiver and the fiber transmission to realize the function of the photoelectric coupler in the original test circuit/test equipment, converts the electric signal into the light signal in the correction measurement process and transmits the light signal to the environment far away from strong magnetic, has better anti-interference capability.
Description
Technical Field
The utility model relates to a photoelectric isolation immunity device field, concretely relates to photoelectric isolation immunity module and device under forceful electric magnetic environment.
Background
At present, a contact type measuring method is generally adopted for measuring circuits/test equipment applied to a high-voltage environment of a power system, namely, a fracture of the action equipment such as a circuit breaker and the like is connected with a test instrument through a lead to obtain fracture action information of the circuit breaker, so that the test equipment is subjected to strong electromagnetic interference, although a part of the test circuit/test equipment is internally isolated by an optical coupler, the optical coupler is a photoelectric coupler, the optical coupler is a device which transmits an electric signal by taking light as a medium, a light emitter (infrared light emitting diode L ED) and a light receiver (photosensitive semiconductor tube and photosensitive resistor) are generally packaged in the same tube shell, when an input end is powered on with a signal, the light emitter emits light, the light receiver generates light current after receiving the light, the light current flows out from an output end, so that 'electricity-light-electricity' conversion is realized, an input end signal is coupled to an output end by taking light as a medium, so that the output end is insulated from the input end, but the optical coupler plays an isolating role, because the optical coupler is welded on a core control board, a core board is placed in the strong electromagnetic environment when the test is carried out, a.
SUMMERY OF THE UTILITY MODEL
According to the not enough of above prior art, the utility model aims to solve the technical problem that a photoelectricity under the strong electromagnetic environment is kept apart anti-interference module and device is proposed, utilizes optic fibre transmitter, optical fiber receiver and optical fiber transmission to realize the function of photoelectric coupler in original test circuit test equipment, turns into optical signal transmission with the signal of telecommunication to keeping away from strong magnetic environment and measure down in the measurement process of rectifying, has better anti-jamming ability.
The photoelectric isolation anti-interference module under the strong electromagnetic environment comprises an optical signal input port, a driving circuit, an optical fiber transmitter, an optical fiber receiver and an optical signal output port, wherein the output end of the optical signal input port is electrically connected with the input end of the driving circuit, the output end of the driving circuit is connected with the input end of the optical fiber transmitter, the output end of the optical fiber transmitter is connected with the input end of the optical fiber receiver through the optical fiber, and the output end of the optical fiber receiver is connected with the input end of the optical signal output port.
Optionally, the driving circuit uses an SN75451BP chip as a core chip.
Optionally, the optical fiber transmitter is a T-1521Z type optical fiber transmitter.
Optionally, the optical fiber receiver is an R-2551Z type optical fiber receiver.
The utility model provides a photoelectric isolation anti-interference device under strong electromagnetic environment, includes shell body, power module, power source, switch, input port, delivery outlet and a plurality of photoelectric isolation anti-interference module under strong electromagnetic environment, the shell body wherein one side outer wall is equipped with the input port, the opposite side outer wall of shell body is equipped with the delivery outlet still is equipped with on the outer wall of shell body power source with the switch is equipped with in the shell body drive circuit the optical fiber transmitter optic fibre optical fiber receiver with power module, power module electric connection drive circuit, optical fiber transmitter and optical fiber receiver.
Optionally, the optoelectronic isolation and immunity modules in the strong electromagnetic environment are set to 6 groups.
Optionally, the number of the input ports is set to 6, the optical signal input ports correspond to the input ports one to one, the number of the output ports is set to 2, and the three optical signal output ports share one output port.
The present invention is further explained and illustrated below
An optoelectronic isolator (abbreviated as OC) is also called a photocoupler or a photocoupler, which is abbreviated as a photocoupler. The optical coupler transmits an electrical signal via light. It has good isolation function to input and output electric signal.
The utility model discloses a photoelectric isolation anti-interference device makes the opto-coupler module general core control circuit board that drops to reach and imitate the electromagnetic interference influence of eliminating the use opto-coupler module and can introducing the system board at the in-process of measuring circuit parameter, improve measurement accuracy.
The utility model discloses synthesize photoelectric isolation technique and fiber communication technical principle, basic unit (one way photoelectric isolation device) comprises devices such as optic fibre transmitter, optic fibre, optical fiber receiver, and the left side is optical fiber receiver and drive circuit, and the right side is optical fiber receiver. The working process is as follows: the electrical signal to be measured is input by one pin of the driving power chip 75451, and is subjected to electro-optical conversion by the optical fiber transmitter, and the optical signal is transmitted to the optical fiber receiver through the optical fiber, and is subjected to the electro-optical conversion to obtain a signal.
Based on single-path photoelectric isolation, the utility model is formed by adding up the device. Since the power system is A, B, C three-phase, and a switchgear such as a circuit breaker generally has two disconnections, there are 6 photoelectric isolation units in total inside the apparatus. The utility model discloses a device can use the commercial power to provide the power for driver chip, optic fibre transmitter and optical fiber receiver through switching power supply.
The utility model discloses a key point is the function that photoelectric, the electro-optical conversion function and the optical fiber transmission who utilizes optic fibre transmitter and receiver realize optoelectronic coupler, the utility model discloses the device can drop CPU core control panel autonomous working, realizes the effect of anti-interference in the forceful electric power electromagnetic environment betterly.
In the correction process of the high-voltage circuit breaker, relevant data of an electric signal of a measuring circuit are required, a high voltage can generate a strong magnetic field, and the strong magnetic field influences the accuracy of the data of the measured electric signal. The optical signal is not affected by the strong magnetic field. In the corrected measuring process, the electric signal is converted into the optical signal and is transmitted to the environment far away from the strong magnetism for measurement, and the measured data is not influenced by the strong magnetism and is accurate.
In a word, the utility model has the advantages that: under the environment of high voltage and strong magnetic field, the photoelectric and electro-optical conversion functions of the optical fiber transmitter and the optical fiber receiver in the module or the device and the optical fiber transmission are utilized to realize the function of the photoelectric coupler in the original test circuit/test equipment, the photoelectric coupler can independently work from a core control board, the error or abnormal working state caused by the fact that strong electromagnetism is introduced onto the core control board by a contact type measurement method is avoided, and the module or the device has better anti-interference capability.
Drawings
Fig. 1 is a schematic structural diagram of a module in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;
the optical fiber signal transmission device comprises a 1-optical signal input port, a 2-driving circuit, a 3-optical fiber transmitter, a 4-optical fiber, a 5-optical fiber receiver, a 6-optical signal output port, a 7-shell, an 8-power interface, a 9-switch, a 10-input port and an 11-output port.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As an embodiment, the utility model provides an optoelectronic isolation anti-interference module under strong electromagnetic environment, including light signal input port, drive circuit, optical fiber transmitter, optic fibre, optical fiber receiver and light signal output port, light signal input port's output with drive circuit's input electric connection, drive circuit's output with optical fiber transmitter's input is connected, and optical fiber transmitter's output passes through optic fibre with optical fiber receiver's input is connected, optical fiber receiver's output with optical signal output port's input is connected.
The utility model discloses still provide a photoelectric isolation immunity device under strong electromagnetic environment, including shell body, power module, power source, switch and a plurality of strong electromagnetic environment under photoelectric isolation immunity module, the shell body wherein one side outer wall is equipped with light signal input port, the opposite side outer wall of shell body are equipped with light signal output port still is equipped with on the outer wall of shell body power source with the switch is equipped with in the shell body drive circuit the optical fiber transmitter optic fibre optical fiber receiver with power module, power module electric connection drive circuit, optical fiber transmitter and optical fiber receiver.
The following describes the preferred embodiments of the present invention in detail.
Referring to fig. 1, the module includes an optical signal input port 1, a driving circuit 2, an optical fiber transmitter 3, an optical fiber 4, an optical fiber receiver 5, and an optical signal output port 6, an output end of the optical signal input port 1 is electrically connected to an input end of the driving circuit 2, an output end of the driving circuit 2 is connected to an input end of the optical fiber transmitter 3, an output end of the optical fiber transmitter 3 is connected to an input end of the optical fiber receiver 5 through the optical fiber 4, an output end of the optical fiber receiver 5 is connected to an input end of the optical signal output port 6, the driving circuit 2 uses an SN75451BP chip as a core chip, the optical fiber transmitter 3 uses a T-1521Z model, and the optical fiber receiver 5 uses an.
The working principle of the module is that the electrical signal to be tested is accessed from the optical signal input port 1, the electrical signal is output from an output pin of an SN75451BP chip of the driving circuit 2, the electro-optical conversion is carried out through the optical fiber transmitter 3, the optical signal is transmitted to the optical fiber receiver 5 through the optical fiber 4, the optical signal is obtained after the electro-optical conversion, and the optical signal is output.
In the correction process of the high-voltage circuit breaker, relevant data of an electric signal of a measuring circuit are required to be measured, a high voltage can generate a strong magnetic field, the strong magnetic field influences the accuracy of the data of the measured electric signal, but an optical signal cannot be influenced by the strong magnetic field. In the corrected measuring process, the electric signal is converted into an optical signal and transmitted to the environment far away from the strong magnetic field for measurement, and the measured data is not influenced by the strong magnetic field to influence the accuracy.
Under the environment of high voltage and strong magnetic field, the photoelectric and electro-optical conversion functions of the optical fiber transmitter 3 and the optical fiber receiver 5 in the module and the optical fiber transmission are utilized to realize the function of the photoelectric coupler in the original test circuit/test equipment, the module can independently work from a core control board, the error or abnormal working state caused by the fact that strong electromagnetism is introduced onto the core control board by a contact type measurement method is avoided, and the module has better anti-interference capability.
Referring to fig. 2, the device includes an outer casing 7, a power module, a power interface 8, a switch 9, an input port 10, an output port 11, and a plurality of optoelectronic isolation and disturbance rejection modules in a strong electromagnetic environment as shown in fig. 1, where one of the modules constitutes an optoelectronic isolation basic unit, the outer wall of one side of the outer casing 7 is provided with the input port 10, the outer wall of the other side of the outer casing 7 is provided with the output port 11, the outer wall of the outer casing 7 is further provided with the power interface 8 and the switch 9, the outer casing 7 is provided with a driving circuit 2, an optical fiber transmitter 3, an optical fiber 4, an optical fiber receiver 5 and a power module, and the power module is electrically connected to the driving circuit 2.
Since three-phase power is supplied in an ac power supply system, and a switching device such as a circuit breaker generally has two fractures, in the present embodiment, the photoelectric isolation base units are arranged in 6 groups.
In this embodiment, the number of input ports 10 is 6, the optical signal input ports 1 correspond to the input ports 10 one by one, that is, the optical signal input port 1 of each optoelectronic isolation basic unit is threaded from the corresponding input port 10, the number of output ports 11 is 2, the three optical signal output ports 6 share one output port 1, that is, the optical signal output ports 6 of the three optoelectronic isolation basic units share one output port 11, and the threads are threaded from the shared output port 11.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (7)
1. The photoelectric isolation anti-interference module under the strong electromagnetic environment is characterized by comprising an optical signal input port (1), a driving circuit (2), an optical fiber transmitter (3), an optical fiber (4), an optical fiber receiver (5) and an optical signal output port (6), wherein the output end of the optical signal input port (1) is electrically connected with the input end of the driving circuit (2), the output end of the driving circuit (2) is connected with the input end of the optical fiber transmitter (3), the output end of the optical fiber transmitter (3) is connected with the input end of the optical fiber receiver (5) through the optical fiber (4), and the output end of the optical fiber receiver (5) is connected with the input end of the optical signal output port (6).
2. The optoelectronic isolation immunity module under strong electromagnetic environment as claimed in claim 1, wherein: the drive circuit (2) adopts an SN75451BP chip as a core chip.
3. The optoelectronic isolation immunity module under strong electromagnetic environment as claimed in claim 1, wherein: the optical fiber transmitter (3) adopts a T-1521Z type optical fiber transmitter.
4. The optoelectronic isolation immunity module under strong electromagnetic environment as claimed in claim 1, wherein: the optical fiber receiver (5) adopts an R-2551Z type optical fiber receiver.
5. The utility model provides a photoelectric isolation anti-interference device under strong electromagnetic environment which characterized in that: the high-power electromagnetic environment optoelectronic isolation anti-interference module comprises an outer shell (7), a power module, a power interface (8), a switch (9), an input port (10), an output port (11) and a plurality of optoelectronic isolation anti-interference modules according to any one of claims 1 to 4, wherein the input port (10) is arranged on the outer wall of one side of the outer shell (7), the output port (11) is arranged on the outer wall of the other side of the outer shell (7), the power interface (8) and the switch (9) are further arranged on the outer wall of the outer shell (7), and the driving circuit (2) and the optical fiber transmitter (3) are arranged in the outer shell (7), the optical fiber (4) and the optical fiber receiver (5) are arranged in the power module, and the power module is electrically connected with the driving circuit (2), the optical fiber transmitter (3) and.
6. The electro-optical isolation and immunity device under strong electromagnetic environment of claim 5, wherein: the photoelectric isolation anti-interference modules in the strong electromagnetic environment are set to 6 groups.
7. The electro-optical isolation and immunity device under strong electromagnetic environment of claim 6, wherein: the number of the input ports (10) is 6, the optical signal input ports (1) are in one-to-one correspondence with the input ports (10), the number of the output ports (11) is 2, and the three optical signal output ports (6) share one output port (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951443.3U CN211014403U (en) | 2019-11-13 | 2019-11-13 | Photoelectric isolation anti-interference module and device under strong electromagnetic environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951443.3U CN211014403U (en) | 2019-11-13 | 2019-11-13 | Photoelectric isolation anti-interference module and device under strong electromagnetic environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211014403U true CN211014403U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921951443.3U Active CN211014403U (en) | 2019-11-13 | 2019-11-13 | Photoelectric isolation anti-interference module and device under strong electromagnetic environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211014403U (en) |
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- 2019-11-13 CN CN201921951443.3U patent/CN211014403U/en active Active
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