Atmospheric electric field instrument communication line protection method and device

Abstract

The invention belongs to the technical field of line protection, and particularly relates to an atmospheric electric field instrument communication line protection method and device. The method comprises the following steps: converting and isolating a signal of a communication line of the atmospheric electric field instrument of the micro electro mechanical system; the energy of surge current in a communication line of an atmospheric electric field instrument of the micro-electro-mechanical system is weakened; common-mode interference in the communication line of the atmospheric electric field instrument of the micro electro mechanical system is filtered out, and protection of the communication line is achieved. According to the invention, the surge protection level of the communication line of the MEMS atmospheric electric field instrument is improved, the communication distance is increased, and the communication stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of line protection, and in particular relates to a method and a device for protecting a communication line of an atmospheric electric field instrument. Background Art

[0002] The atmospheric electric field meter is a device used to measure the atmospheric electric field and its changes. It uses the principle that conductors generate induced charges in the electric field to measure the electric field. When charge separation occurs in the cloud, the ground electric field will change accordingly. Its intensity is related to the accumulation and distribution of charges in the cloud. Therefore, by measuring the changes in the ground atmospheric electric field, the changes in the electric field of the high-altitude cloud layer can be inverted, and the danger of lightning strikes can be predicted to a certain extent.

[0003] The wired communication of MEMS atmospheric electric field instrument is usually realized by RS485. The existing RS485 communication distance is short, the communication is unstable and the surge protection level of the line is not enough. Summary of the invention

[0004] In view of the above problems, the present invention provides a method for protecting a communication line of an atmospheric electric field instrument, the method comprising:

[0005] Convert and isolate the signals of the communication line of the micro-electromechanical system atmospheric electric field instrument;

[0006] Weaken the energy of surge current in the communication line of the micro-electromechanical system atmospheric electric field instrument;

[0007] Filter out common-mode interference in the communication line of the micro-electromechanical system atmospheric electric field instrument to protect the communication line.

[0008] Preferably, the converting of the signal of the communication line of the micro-electro-mechanical system atmospheric electric field instrument comprises: performing level conversion on the 485 signal of the micro-electro-mechanical system atmospheric electric field instrument.

[0009] Preferably, isolating the signal of the micro-electromechanical system atmospheric electric field instrument communication line includes: isolating and protecting the long link communication end and the back end in the micro-electromechanical system atmospheric electric field instrument communication line.

[0010] Preferably, the method of weakening the energy of surge current in the communication line of the micro-electromechanical system atmospheric electric field instrument comprises:

[0011] Release the peak pulse of surge current;

[0012] Release the high current energy in the surge current.

[0013] The present invention also proposes a communication line protection device for an atmospheric electric field instrument, the device comprising a 485 integrated optocoupler, a transient diode, a common mode inductor and a ceramic discharge tube; the 485 integrated optocoupler is connected to the transient diode, the transient diode is connected to the common mode inductor, and the common mode inductor is connected to the ceramic discharge tube;

[0014] Wherein, the 485 integrated optical coupler is used to convert and isolate the signal of the communication line of the micro-electromechanical system atmospheric electric field instrument;

[0015] The transient diode and the ceramic discharge tube are used to weaken the energy of the surge current in the communication line of the micro-electromechanical system atmospheric electric field instrument;

[0016] The common mode inductor is used to filter out common mode interference in the communication line of the micro-electromechanical system atmospheric electric field instrument.

[0017] Preferably, the device further comprises an isolated power supply, which is connected to the 485 integrated optocoupler and is used to provide electrical energy to the 485 integrated optocoupler.

[0018] Preferably, the device further comprises a matching resistor, wherein the matching resistor is connected to the ceramic discharge tube and is used to realize remote communication of the communication line.

[0019] Preferably, the transient diode is used to release the peak pulse of the surge current;

[0020] The ceramic discharge tube is used to release high current energy in surge current.

[0021] The present invention also provides an electronic device, comprising:

[0022] Processor and memory;

[0023] The processor calls the computer program stored in the memory to execute any one of the above-mentioned methods for protecting the communication line of the atmospheric electric field meter.

[0024] The present invention also provides a computer-readable storage medium.

[0025] The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute any of the above-mentioned methods for protecting the communication line of an atmospheric electric field meter.

[0026] The present invention has the following beneficial effects:

[0027] The present invention improves the surge protection level of the communication line of the MEMS atmospheric electric field instrument, and improves the communication distance and communication stability.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A diagram showing a method for protecting a communication line of an atmospheric electric field instrument according to an embodiment of the present invention is shown;

[0031] Figure 2 A schematic diagram showing the structure of a communication circuit in an embodiment of the present invention is shown;

[0032] Figure 3 A circuit diagram showing a communication circuit in an embodiment of the present invention;

[0033] Figure 4 A diagram of an electronic device in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present disclosure will be more comprehensive and complete, and the concepts of the example embodiments are fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0035] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware units or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0036] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the steps. For example, some steps may be decomposed, while some steps may be combined or partially combined, so the actual execution order may change according to the actual situation.

[0037] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0038] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or sub-modules is not necessarily limited to those steps or sub-modules explicitly listed, but may include other steps or sub-modules not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0039] like Figure 1 As shown, the present invention proposes a method for protecting a communication line of an atmospheric electric field instrument, the method comprising:

[0040] S1. Convert and isolate the signal of the communication line of the Micro Electromechanical System (MEMS) atmospheric electric field instrument;

[0041] The signal of the communication line of the MEMS atmospheric electric field instrument is converted, including: the level conversion of the 485 signal of the MEMS atmospheric electric field instrument from the low level 3.3V to the high level 5V, so as to improve the line anti-interference.

[0042] The signal of the communication line of the MEMS atmospheric electric field instrument is isolated, including: isolating and protecting the long link communication end and the back end of the communication line of the MEMS atmospheric electric field instrument.

[0043] S2, weaken the energy of surge current in the communication line of MEMS atmospheric electric field instrument;

[0044] Weakening the energy of surge current in the communication line of the MEMS atmospheric electric field instrument includes: releasing the peak pulse of the surge current; and releasing the large current energy in the surge current.

[0045] S3. Filter out common-mode interference in the communication line of the MEMS atmospheric electric field instrument to protect the communication line.

[0046] like Figure 2 As shown, the present invention proposes a communication line protection device for an atmospheric electric field instrument, the device comprising a 485 integrated optical coupler 20, a transient voltage suppressor (TVS) 30, a common mode inductor 40 and a ceramic discharge tube 50;

[0047] The 485 integrated optical coupler 20 is connected to the TVS 30, the TVS 30 is connected to the common mode inductor 40, and the common mode inductor 40 is connected to the ceramic discharge tube 50;

[0048] Wherein, the 485 integrated optical coupler 20 is used to convert and isolate the signal of the communication line of the MEMS atmospheric electric field instrument;

[0049] The TVS 30 and the ceramic discharge tube 50 are used to weaken the energy of surge current in the communication line of the MEMS atmospheric electric field instrument;

[0050] The common mode inductor 40 is used to filter out common mode interference in the communication line of the MEMS atmospheric electric field instrument.

[0051] like Figure 3 As shown, the isolated power supply corresponds to the 12V in the figure, and the isolated power supply is integrated in the 485 integrated optocoupler;

[0052] The 485 integrated optocoupler corresponds to U2 in the figure. U2 is sealed with epoxy resin to improve the life of the optocoupler and greatly reduce the area of ​​the PCB layout. Pin 1 of U2 is connected to one end of capacitor C2, one end of capacitor C2 is connected to the negative electrode of D2, and the negative electrode of D2 is connected to +3V3. Pin 2 of U2 is connected to the other end of capacitor C2, the other end of capacitor C2 is connected to the other end of D2, and the other end of D2 is grounded. Pin 3 of U2 is connected to resistor R5, pin 4 of U2 is connected to resistor R7, pin 7 of U2 is connected to one end of resistor R8, pin 8 of U2 is connected to pin 4 of D1, D3 and L1, pin 9 of U2 is connected to the other end of resistor R8, one end of resistor R10, D1, D6 and pin 1 of L1, pin 10 of U2 is connected to the other end of resistor R10, one end of D3, D6, R11 and one end of capacitor C3;

[0053] TVS corresponds to D1, D3, and D6 in the figure. It uses surge level 4 devices with a withstand voltage of 6.5V and 12V to adapt and protect U2.

[0054] The common mode inductor corresponds to L1 in the figure, which suppresses common mode interference and avoids EMC problems.

[0055] The ceramic discharge tube corresponds to GDT1 in the figure, the 3rd and 4th pins of L1 are connected to GDT1, the other end of the capacitor C3 is connected to the other end of the resistor R11, and the other end of the resistor R11 is connected to GDT1;

[0056] The matching resistor R9 in the figure suppresses the signal reflection of the line, and GDT1 is connected to the resistor R9;

[0057] In the figure, D6 and D7 are the receiving and sending status indicator lights, and D7 is connected to the 485 integrated optocoupler; in the figure, C3 and R11 are the resistors and capacitors connecting the signal ground and the earth; the ceramic discharge tube has a large current flow and a slow response time, while the TVS has a small current flow and a fast response time. When a surge current appears in the line, the TVS first turns on to release the spike pulse, and then the ceramic discharge tube turns on to release the large current energy therein.

[0058] like Figure 4 As shown, corresponding to the atmospheric electric field instrument communication line protection method provided above, the present invention also provides an electronic device. Since the embodiment of the device is similar to the above method embodiment, the description is relatively simple. For relevant parts, please refer to the description of the above method embodiment part. The device described below is only schematic. The device may include: a processor (processor) 1, a memory (memory) 2 and a communication bus (i.e., the above device bus) and a search engine, wherein the processor 1 and the memory 2 complete mutual communication through the communication bus and communicate with the outside through the communication interface. The processor 1 can call the logic instructions in the memory 2 to execute the atmospheric electric field instrument communication line protection method.

[0059] In addition, the logic instructions in the above-mentioned memory 2 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: a storage chip, a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes.

[0060] On the other hand, an embodiment of the present invention further provides a processor-readable storage medium, on which a computer program 3 is stored. When the computer program 3 is executed by the processor 1, the atmospheric electric field meter communication line protection method provided in the above embodiments is implemented.

[0061] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor 1, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0062] Those skilled in the art should understand that although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for protecting the communication line of an atmospheric electric field instrument, characterized in that: The method comprises: Convert and isolate the signals of the communication line of the micro-electromechanical system atmospheric electric field instrument; Weaken the energy of surge current in the communication line of the micro-electromechanical system atmospheric electric field instrument; Filter out common-mode interference in the communication line of the micro-electromechanical system atmospheric electric field instrument to protect the communication line.

2. The atmospheric electric field instrument communication line protection method according to claim 1 is characterized in that: The converting of the signal of the communication line of the micro-electro-mechanical system atmospheric electric field instrument comprises: performing level conversion on the 485 signal of the micro-electro-mechanical system atmospheric electric field instrument.

3. The atmospheric electric field instrument communication line protection method according to claim 1, characterized in that: The isolating the signal of the communication line of the micro-electromechanical system atmospheric electric field instrument comprises: isolating and protecting the long link communication end and the back end in the communication line of the micro-electromechanical system atmospheric electric field instrument.

4. The atmospheric electric field instrument communication line protection method according to claim 1, characterized in that: The method of weakening the energy of surge current in the communication line of the micro-electromechanical system atmospheric electric field instrument comprises: Release the peak pulse of surge current; Release the high current energy in the surge current.

5. A communication line protection device for an atmospheric electric field instrument, characterized in that: The device includes a 485 integrated optocoupler, a transient diode, a common mode inductor and a ceramic discharge tube; the 485 integrated optocoupler is connected to the transient diode, the transient diode is connected to the common mode inductor, and the common mode inductor is connected to the ceramic discharge tube; Wherein, the 485 integrated optical coupler is used to convert and isolate the signal of the communication line of the micro-electromechanical system atmospheric electric field instrument; The transient diode and the ceramic discharge tube are used to weaken the energy of the surge current in the communication line of the micro-electromechanical system atmospheric electric field instrument; The common mode inductor is used to filter out common mode interference in the communication line of the micro-electromechanical system atmospheric electric field instrument.

6. The atmospheric electric field instrument communication line protection device according to claim 5, characterized in that: The device also includes an isolated power supply, which is connected to the 485 integrated optocoupler and is used to provide electrical energy to the 485 integrated optocoupler.

7. The atmospheric electric field instrument communication line protection device according to claim 5, characterized in that: The device also includes a matching resistor, which is connected to the ceramic discharge tube and is used to realize remote communication of the communication line.

8. The atmospheric electric field instrument communication line protection device according to claim 5, characterized in that: The transient diode is used to release the peak pulse of surge current; The ceramic discharge tube is used to release high current energy in surge current.

9. An electronic device, characterized in that: include: Processor and memory; The processor calls the computer program stored in the memory to execute the atmospheric electric field instrument communication line protection method according to any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute the atmospheric electric field meter communication line protection method according to any one of claims 1 to 4.

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