CN115862274B - Multi-band radio frequency electromagnetic energy explosion-proof ignition test device and method - Google Patents
Multi-band radio frequency electromagnetic energy explosion-proof ignition test device and method Download PDFInfo
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- CN115862274B CN115862274B CN202310193900.1A CN202310193900A CN115862274B CN 115862274 B CN115862274 B CN 115862274B CN 202310193900 A CN202310193900 A CN 202310193900A CN 115862274 B CN115862274 B CN 115862274B
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Abstract
The invention discloses a multi-band radio frequency electromagnetic energy explosion-proof ignition test device and a method, wherein the ignition test device comprises an ignition test module, a power measurement circuit and an external radio frequency source module, the ignition test module comprises a first dipole antenna metal tube, a metal disc, a driving motor, a second dipole antenna metal tube coaxially arranged on one side of the first dipole antenna metal tube and a feed electrode, the external radio frequency source module supplies power to the device, combustible gas is conveyed to a closed explosion cavity through a gas conveying pipe, the metal disc and the feed electrode are respectively and electrically connected with the first dipole antenna metal tube and the second dipole antenna metal tube after the input is finished, the driving motor drives the metal disc to rotate through a driving guide rod, the metal disc is intermittently connected with the feed electrode, the explosive gas is ignited to explode, a signal source safety power threshold is obtained, and then the first and second growth metal tubes are replaced to adapt to radio frequency power safety thresholds of different bands of the external radio frequency source module, so that the test efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of wireless communication, and particularly relates to a multi-band radio frequency electromagnetic energy explosion-proof ignition test device and method.
Background
The large bandwidth, low delay and wide connection of the 5G technology can solve the difficult data of synchronous transmission, remote real-time control and multi-sensor centralized access of large data in intelligent exploitation of underground coal mines, oil platforms and the like, and is a technical basis for realizing the coordinated efficient operation of intelligent systems. However, the electromagnetic wave is used and spread in the flammable and explosive gas environment such as methane, dust and the like, two factors of explosive gas and oxygen with certain concentration in three elements of explosion are satisfied, and when the energy released by a certain way in the electromagnetic wave spreading process is larger than the minimum ignition energy, the environment explosion is extremely easy to be caused. Along with the popularization and application of the 5G technology in coal mine, the radio frequency electromagnetic wave equipment brings technical advantages into play, meanwhile, unpredictable potential safety hazards are generated, and the electromagnetic wave explosion prevention problem of high-power radio frequency source equipment such as base stations and the like is widely focused.
In order to further provide communication bandwidth, the frequencies of the 5G communication technology are now up to 3.5GHz, and in addition, 700MHz, 2.1GHz and 2.6GHz are typical frequency bands for 5G communication. GB/T3836.1 part 1 of the explosive Environment of GBT 3836.1-2021: the general requirement of equipment specifies that the threshold power of the I-type explosive radio frequency signals must not exceed 6W, but the specified basis sources are from tests aiming at the frequency band below 10MHz, and the test results are directly popularized to the frequency band of 9kHz-60GHz as standard basis. With the change of frequency, the difficulty level of forming electric sparks in the voltage breakdown gap is also changed, and the popularization is obviously unreasonable.
In explosive locations using radio frequency equipment, such as 5G base stations and the like, there is a possibility that radio frequency electromagnetic energy will be coupled and released by the metal conductors causing an environmental explosion. When the metal conductor resonates with the electromagnetic wave, energy can be coupled down; when the electrical state of the metal conductor is changed due to external physical factors (such as vibration) and the conductor is easy to generate electric spark when an ordinary circuit switch is opened and closed, the energy is easy to release, and the energy release has close relation with the frequency of electromagnetic waves besides the electric parameters of the metal conductor, so that whether the metal conductor can be coupled with the radio frequency electromagnetic energy is mainly related with the frequency of the electromagnetic waves or not is generally considered, but because the ordinary test device can only be coupled with a radio frequency source of a single frequency range in an inherent state, if the radio frequency sources of different frequency ranges are to be tested in one test, the test device with multiple sets of different parameter designs needs to be prepared for coupling matching, and the test efficiency is reduced.
Disclosure of Invention
The electromagnetic energy explosion-proof ignition test device provided by the embodiment of the invention can be used for simulating the power safety threshold value when the metal conductor is switched between the normal state and the short circuit state, and can be used for conveniently and rapidly obtaining the power safety threshold value of the radio frequency source module to be tested under different frequencies.
In a first aspect, the present application provides, by way of an embodiment, the following technical solutions:
the radio frequency electromagnetic energy explosion-proof ignition test device comprises an ignition test module, a power measurement circuit and an external radio frequency source module, wherein the ignition test module is connected with the power measurement circuit, and the external radio frequency source module is used for transmitting radio frequency signals to the ignition test module;
the ignition test module comprises a first dipole antenna metal tube, a metal disc, a driving motor, a second dipole antenna metal tube and a feed electrode; the second dipole antenna metal tube is coaxially arranged at one side of the first dipole antenna metal tube;
one end of the first dipole antenna metal tube is sealed with a first partition plate, the other end of the first dipole antenna metal tube is provided with a driving motor, the output end of the driving motor is connected with a driving rod, the driving rod penetrates through and extends out of the first partition plate, and the metal disc is arranged at the output end of the driving rod;
one end of the second dipole antenna metal tube is sealed with a second baffle, the second baffle and the first baffle are arranged opposite to each other, a gas pipe is arranged in the second dipole antenna metal tube, and the gas pipe penetrates through the second baffle;
the metal disc is provided with a notch along the circumference, and when the driving motor rotates the metal disc, the feed electrode is intermittently contacted with the metal disc;
the first end of the first dipole antenna metal tube is sleeved with a first flange, the first end of the second dipole antenna metal tube is sleeved with a second flange, a tube cover is connected between the first flange and the second flange, the first flange, the second flange, the tube cover, the first partition plate and the second partition plate form a closed explosion cavity, and a sensor for detecting explosion is arranged in the closed explosion cavity;
the feed electrode is arranged on the side wall of the second partition plate and is positioned in the airtight explosion cavity;
the second end of the first dipole antenna metal tube is detachably connected with a first growing metal tube, and the second end of the second dipole antenna metal tube is detachably connected with a second growing metal tube.
In some embodiments, the external radio frequency source module is connected with a protection circuit, an output end of the protection circuit is connected with a coaxial cable, an outer core of the coaxial cable is electrically connected with the second dipole antenna metal tube, an inner core of the coaxial cable is electrically connected with the first dipole antenna metal tube, and the first dipole antenna metal tube and the second dipole antenna metal tube are used as transmitting antennas of the external radio frequency source module;
when an electromagnetic energy explosion-proof test is carried out, the driving motor drives the metal disc to rotate relative to the feed electrode, so that the other end of the feed electrode is intermittently contacted with the surface of the metal disc, combustible gas is ignited after the output power of the external radio frequency source module reaches a threshold value, and the power measuring circuit is used for obtaining the output power of the external radio frequency source module as a safety energy threshold value when the sensor detects that explosion occurs in the closed explosion cavity.
In some embodiments, the external rf source module is a wireless rf source module, and the first dipole antenna metal tube and the second dipole antenna metal tube are used as receiving antennas of the wireless rf source module;
when an electromagnetic energy explosion-proof test is carried out, the driving motor drives the metal disc to rotate relative to the feed electrode, so that the other end of the feed electrode is in intermittent contact with the surface of the metal disc, combustible gas is ignited after the output power of the external radio frequency source module reaches a threshold value, and the power measuring circuit is used for obtaining the output power of the external radio frequency source module as a safety energy threshold value when the sensor detects that explosion occurs in the closed explosion cavity.
In some embodiments, the length of the feed electrode in the closed explosion cavity is greater than or equal to the distance between the second partition plate and the metal disc plate surface.
In some embodiments, the first dipole antenna metal tube is integrally formed with the first spacer and the second dipole antenna metal tube is integrally formed with the second spacer.
In some embodiments, the feed is a tungsten wire and the metal disk is a cadmium disk.
In some embodiments, the end of the gas delivery pipe away from the closed explosion chamber is provided with a flame shut-off valve.
In some embodiments, the material of the tube cover is an explosion-proof transparent material.
In a second aspect, based on the same inventive concept, the present application provides, by way of an embodiment, the following technical solutions:
a method for testing the explosion-proof ignition of the multi-band radio frequency electromagnetic energy, which is characterized by being applied to the testing device provided in any one of the first aspect, and comprising the following steps:
s1, controlling combustible gas to be conveyed into the closed explosion cavity through the gas conveying pipe;
s2, controlling the metal disc to be electrically connected with the metal tube of the first dipole antenna, and controlling the feed electrode to be electrically connected with the metal tube of the second dipole antenna;
s3, controlling the driving motor to drive the metal disc to rotate through the driving rod so as to enable the metal disc to be intermittently and electrically connected with the feed electrode;
s4, controlling an external radio frequency source module to output a radio frequency signal with increasing power to the ignition test module based on a set frequency, and obtaining the output power of the external radio frequency source module when the sensor detects that the closed explosion cavity explodes, wherein the output power is used as a safety energy threshold value of the external radio frequency source module under the set frequency;
s5, adjusting the set frequency of the radio frequency signal output by the external radio frequency source module, replacing the first growing metal tube and the second growing metal tube which are matched with the adjusted set frequency, and repeating the steps S1-S4 to obtain the safe energy threshold value of the external radio frequency source module under the adjusted set frequency.
In some embodiments, the controlling the external rf source module to output an rf signal with increasing power to the ignition test module based on a set frequency includes:
and taking the first dipole antenna metal tube and the second dipole antenna metal tube as transmitting antennas of radio frequency signals of the external radio frequency source module, controlling the external radio frequency source module to output radio frequency signals with increasing power to the ignition test module through a coaxial cable based on set frequency.
In some embodiments, the controlling the external rf source module to output an rf signal with increasing power to the ignition test module based on a set frequency includes:
and taking the first dipole antenna metal tube and the second dipole antenna metal tube as receiving antennas of radio frequency signals of the external radio frequency source module, and controlling the external radio frequency source module to wirelessly transmit radio frequency signals with increasing power to the ignition test module based on set frequency.
The one or more technical solutions provided by the embodiments of the present invention at least achieve the following technical effects or advantages:
according to the embodiment of the invention, the power measuring circuit and the external radio frequency source module are arranged for the ignition experiment module, explosive gas is input into the closed explosion cavity through the gas transmission pipe, when the driving motor drives the metal disc with the notch on the surface which is electrically connected to rotate relative to the feeding electrode which is electrically connected, the metal disc and the feeding electrode are intermittently contacted, so that intermittent electrical connection occurs between the metal disc and the feeding electrode, the transmitting signal power of the external radio frequency source module reaches the threshold value, the explosive gas in the closed explosion cavity is ignited, the power safety threshold value of the external radio frequency source module can be tested, the detachable first growing metal pipe and the detachable second growing metal pipe are replaced to adapt to the signal frequency of the external radio frequency source module in different frequency bands, and therefore, the power safety threshold value of the external radio frequency source module under the condition of outputting radio frequency signals in different frequency bands can be tested without preparing multiple sets of test devices in one test process, and the test efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the connection of a multi-band RF electromagnetic energy explosion-proof ignition test apparatus of the present invention;
FIG. 2 is a schematic diagram of an ignition test module according to the present invention;
FIG. 3 is a schematic diagram of a first connection of an external RF source module according to the present invention;
FIG. 4 is a schematic diagram of a second connection of the external RF source module of the present invention;
FIG. 5 is a schematic illustration of the test method of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The description as it relates to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
On the one hand, referring to fig. 1 and 2, the embodiment of the invention discloses a multi-band radio frequency electromagnetic energy explosion-proof ignition test device, which comprises an ignition test module 1, a power measurement circuit 2 and an external radio frequency source module 3, wherein the ignition test module 1 is connected with the power measurement circuit 2, and the external radio frequency source module 3 is used for transmitting radio frequency signals to the ignition test module 1;
the ignition test module 1 comprises a first dipole antenna metal tube 11, a metal disc 12, a second dipole antenna metal tube 13 and a feed electrode 14; the second dipole antenna metal tube 13 is coaxially disposed at one side of the first dipole antenna metal tube 11.
One end of the first dipole antenna metal tube 11 is sealed with a first partition 111, the other end of the first dipole antenna metal tube 11 is provided with a driving motor 112, the output end of the driving motor 112 is connected with a driving rod 113, the driving rod 113 penetrates through and extends out of the first partition 111, and the metal disc 12 is vertically arranged at the output end of the driving rod 113;
a second baffle plate 131 is sealed at one end of the second dipole antenna metal tube 13, the second baffle plate 131 and the first baffle plate 111 are arranged opposite to each other, the feed electrode 14 is arranged outside the second baffle plate 131, a gas pipe 132 is coaxially arranged in the second dipole antenna metal tube 13, and the gas pipe 132 penetrates through the second baffle plate 131;
the metal disc 12 is provided with notches 121 along the circumference, when the driving motor 112 rotates the metal disc 12, the feed electrode 14 intermittently contacts with the metal disc 12, wherein the notches 121 can be through holes or notches, and the notches 121 can be one notch or a plurality of notches and are uniformly distributed along the circumference of the metal disc 12;
the first end of the first dipole antenna metal tube 11 is sleeved with a first flange 114, the first end of the second dipole antenna metal tube 13 is sleeved with a second flange 133, a tube cover 15 is connected between the first flange 114 and the second flange 133, the inner side of the tube cover 15 forms a closed explosion cavity 151, and a sensor 152 for detecting explosion is arranged in the closed explosion cavity 151, wherein the sensor 152 can be a vibration sensor or a sound sensor.
The second end of the first dipole antenna metal tube 11 is detachably connected with the first growing metal tube 115, the second end of the second dipole antenna metal tube 13 is detachably connected with the second growing metal tube 134, alternatively, the detachable connection mode can be threaded connection, bolt connection or buckle connection, for example, the first dipole antenna metal tube 11 and the second growing metal tube 115 can be connected through a first dipole antenna growing nut 116, and the second dipole antenna metal tube 13 and the second growing metal tube 135 can be connected through a second dipole antenna growing nut 134.
The gas pipe 132 is used for conveying explosive gas to the closed explosion cavity 151, wherein the explosive gas can be a mixture of air and hydrogen, ethylene, methane and acetylene.
The test device provided by the invention has the beneficial effects that: according to the embodiment of the invention, the power measuring circuit 2 and the external radio frequency source module 3 are arranged on the ignition experiment module, when the driving motor 112 drives the electrically connected metal disc 12 to rotate relative to the electrically connected feed electrode 14, the metal disc 12 and the feed electrode 14 are intermittently electrically connected, the emission signal power of the external radio frequency source module 3 reaches the threshold value, explosive gas in the sealed explosion cavity 151 is ignited, so that the power safety threshold value of the external radio frequency source module 3 can be tested, the first growing metal tube 115 and the second growing metal tube 135 are replaced to adapt to the signal frequencies of the external radio frequency source module 3 in different frequency bands, and therefore, the power safety threshold value of the external radio frequency source module under the condition of outputting radio frequency signals in different frequency bands can be tested without preparing multiple sets of test devices in one test process, and the test efficiency is improved.
Research shows that in the practical application scene, the dangerous generation process is as follows: the radio frequency source (the radio frequency source in the explosion-proof place is specially designed, the safety of the radio frequency source is verified) emits electromagnetic waves, the electromagnetic waves are coupled by the metal conductor in the environment (the metal conductor needs to meet a certain resonance condition, the metal conductor plays a role of a receiving antenna at the moment, the coupled energy is related to the power of the radio frequency source, under the condition that other conditions are unchanged, the larger the radio frequency source power is, the more the coupled energy of the metal conductor is, in a certain process (such as vibration or collision of the metal conductor is generated), the electromagnetic wave energy coupled by the metal conductor is released, and when the released energy exceeds a certain threshold value, explosive gas in the environment can be ignited. According to the reciprocity principle of the antennas, the receiving and transmitting antennas can be interchanged, and at the moment, a test device can be selected as a transmitting antenna to directly test, namely, the process of electromagnetic wave space propagation is skipped; the method can also select to receive energy in space, and is closer to the actual scene, but due to the fact that the transmission loss of electromagnetic waves in space is extremely large, a receiving antenna is adopted to receive electromagnetic wave energy, a radio frequency source with higher power is needed, and the method is energy waste for laboratory experiments.
Therefore, the invention can adopt the following two external radio frequency source module 3 connection and verification modes.
In another alternative embodiment, as shown in fig. 3, the external radio frequency source module 3 is connected with a protection circuit 31, an output end of the protection circuit 31 is connected with a coaxial cable, an outer core of the coaxial cable is electrically connected with the second dipole antenna metal tube 13, an inner core of the coaxial cable is electrically connected with the first dipole antenna metal tube 11, and the first dipole antenna metal tube 11 and the second dipole antenna metal tube 13 serve as transmitting antennas of the external radio frequency source module 3;
when the electromagnetic energy explosion-proof test is performed, the input end of the power measurement circuit 2 is electrically connected with a radio frequency source, the driving motor 112 drives the metal disc 12 to rotate relative to the feeding electrode 14, so that the other end of the feeding electrode 14 is in intermittent contact with the surface of the metal disc 12, combustible gas is ignited after the output power of the external radio frequency source module 3 reaches a threshold value, the power measurement circuit 2 is used for obtaining the output power of the external radio frequency source module 3 as a safe energy threshold value when the sensor 152 detects explosion in the sealed explosion cavity 151, it can be understood that the test device is directly used as a transmitting antenna, i.e. the process of electromagnetic wave space propagation is skipped, most of loss generated by electromagnetic wave transmission in space is avoided, and the test can be performed by adopting the external radio frequency source module 3 with smaller power, and in the working process, when the feeding electrode 14 is positioned in a notch of the metal disc 12, the first dipole antenna metal tube 11 and the second dipole antenna metal tube 13 work normally, and when the feeding electrode 14 is positioned in a non-notch of the metal disc 12, the first dipole antenna metal tube 11 and the second dipole antenna metal tube 13 work normally and simulate a short-circuit state.
In another alternative embodiment, referring to fig. 4, the external rf source module 3 is a wireless rf source module, and the first dipole antenna metal tube 11 and the second dipole antenna metal tube 13 are used as receiving antennas of the external rf source module 3;
when an electromagnetic energy explosion-proof test is performed, the input end of the power measurement circuit 2 is electrically connected with the external radio frequency source module 3, the driving motor 112 drives the metal disc 12 to rotate relative to the feed electrode 14, so that the other end of the feed electrode 14 is in intermittent contact with the surface of the metal disc 12, combustible gas is ignited after the output power of the external radio frequency source module 3 reaches a threshold value, the power measurement circuit 2 is used for obtaining the output power of the external radio frequency source module 3 as a safety energy threshold value when the sensor 152 detects that explosion occurs in the sealed explosion cavity 151, and it can be understood that the ignition test module 1 is used as a receiving antenna to set a wireless radio frequency source nearby for the test, and the obtained power safety threshold value is more accurate by adopting an electromagnetic wave space propagation mode to be closer to a real actual scene.
In another alternative embodiment, the length of the feeding electrode 14 in the closed explosion chamber 151 is greater than or equal to the distance between the second partition 131 and the plate surface of the metal plate 12, wherein if the notch 121 is a notch, the length of the feeding electrode 14 in the closed explosion chamber 151 should be smaller than the distance between the bottom of the notch and the second partition 131.
In another alternative embodiment, the first dipole antenna metal tube 11 is integrally formed with the first spacer 111, the second dipole antenna metal tube 13 is integrally formed with the second spacer 131, and it is understood that the first dipole antenna metal tube 11 is integrally formed with the first spacer 111, and the second dipole antenna metal tube 13 is integrally formed with the second spacer 131, such that the power transmission efficiency can be maximized.
In an alternative embodiment, where the feed electrode 14 is a tungsten wire and the metal disk 12 is a cadmium disk, it will be appreciated that the feed electrode 14 is a tungsten wire and the metal disk 12 is a cadmium disk, such a combination has proven to be most efficient in firing.
In another alternative embodiment, the end of the air pipe 132 remote from the closed explosion chamber 151 is provided with a flame stop valve 1321, and it is understood that the flame stop valve 1321 is used to close the air pipe 132 after the air is exhausted, so as to prevent the explosion flame from overflowing.
In another alternative embodiment, the first flange 114 and the second flange 133 are connected by the insulating bolts 16, and the length of the tube housing 15 and the length of the insulating bolts 16 have several different dimensions, and it is understood that by replacing the tube housing 15 with a different length, the distance between the first flange 114 and the second flange 133 can be adjusted, thereby adjusting the gap and the length for adjusting the impedance matching state.
In another alternative embodiment, the tube housing 15 is an explosion-proof transparent material, such as explosion-proof glass or acrylic material.
In a second aspect, in another alternative embodiment, referring to fig. 5, a method for testing the explosion-proof ignition of multi-band rf electromagnetic energy is provided, comprising the steps of:
s1, controlling combustible gas to be conveyed into the closed explosion cavity 151 through the gas conveying pipe 132;
s2, controlling the metal disc 12 to be electrically connected with the first dipole antenna metal tube 11, and controlling the feed electrode 14 to be electrically connected with the second dipole antenna metal tube 13;
s3, controlling the driving motor 112 to drive the metal disc 12 to rotate through the driving rod 113 so as to enable the metal disc 12 to be in intermittent electrical connection with the feed electrode 14;
s4, controlling the external radio frequency source module 3 to output radio frequency signals with increasing power to the ignition test module 1 based on a set frequency, and obtaining the output power of the external radio frequency source module 3 when the sensor 152 detects that the closed explosion cavity 151 explodes, wherein the output power is used as a safe energy threshold value of the external radio frequency source module 3 under the set frequency;
s5, adjusting the set frequency of the radio frequency signal output by the external radio frequency source module 3, replacing the first growing metal tube 115 and the second growing metal tube 135 which are matched with the adjusted set frequency, and repeating the steps S1-S4 to obtain the safe energy threshold of the external radio frequency source module 3 under the adjusted set frequency.
The test method provided in this embodiment has advantages consistent with those of the embodiment of the first aspect, and will be described with reference to the embodiments of the first aspect.
In another alternative embodiment, the controlling the external rf source module 3 to output an rf signal with increasing power to the ignition test module 1 based on a set frequency includes:
the first dipole antenna metal tube 11 and the second dipole antenna metal tube 13 are used as transmitting antennas of radio frequency signals of the external radio frequency source module 3, the external radio frequency source module 3 is controlled to output radio frequency signals with increasing power to the ignition test module 1 through the coaxial cable based on set frequency, it can be understood that the ignition test module 1 is used as the transmitting antennas to directly test, namely, the process of electromagnetic wave space propagation is skipped, most of losses caused by electromagnetic wave transmission in space are avoided, and the external radio frequency source module 3 with smaller power can be used for testing.
In another alternative embodiment, the controlling the external rf source module 3 to output an rf signal with increasing power to the ignition test module 1 based on a set frequency includes:
the first dipole antenna metal tube 11 and the second dipole antenna metal tube 13 are used as receiving antennas of radio frequency signals of the external radio frequency source module 3, the external radio frequency source module 3 is controlled to wirelessly transmit radio frequency signals with increasing power to the ignition test module 1 based on set frequency, it can be understood that the ignition test module 1 is used as a receiving antenna to be provided with a wireless radio frequency source nearby for test, an electromagnetic wave space propagation mode is adopted, the method is closer to a real actual scene, and the obtained power safety threshold is more accurate.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software that is executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired or a combination of any of these, and furthermore, functional units may be integrated in one processing unit, individual units may exist physically alone, or two or more units may be integrated in one unit.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of units may be a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate components may or may not be physically separate, and components as control devices may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method of the various embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above is only an embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (11)
1. The radio frequency electromagnetic energy explosion-proof ignition test device is characterized by comprising an ignition test module, a power measurement circuit and an external radio frequency source module, wherein the ignition test module is connected with the power measurement circuit, and the external radio frequency source module is used for transmitting radio frequency signals to the ignition test module;
the ignition test module comprises a first dipole antenna metal tube, a metal disc, a driving motor, a second dipole antenna metal tube and a feed electrode; the second dipole antenna metal tube is coaxially arranged at one side of the first dipole antenna metal tube;
one end of the first dipole antenna metal tube is sealed with a first partition plate, the other end of the first dipole antenna metal tube is provided with a driving motor, the output end of the driving motor is connected with a driving rod, the driving rod penetrates through and extends out of the first partition plate, and the metal disc is arranged at the output end of the driving rod;
one end of the second dipole antenna metal tube is sealed with a second baffle, the second baffle and the first baffle are arranged opposite to each other, a gas pipe is arranged in the second dipole antenna metal tube, and the gas pipe penetrates through the second baffle;
the metal disc is provided with a notch along the circumference, and when the driving motor rotates the metal disc, the feed electrode is intermittently contacted with the metal disc;
the first end of the first dipole antenna metal tube is sleeved with a first flange, the first end of the second dipole antenna metal tube is sleeved with a second flange, a tube cover is connected between the first flange and the second flange, the first flange, the second flange, the tube cover, the first partition plate and the second partition plate form a closed explosion cavity, and a sensor for detecting explosion is arranged in the closed explosion cavity;
the feed electrode is arranged on the side wall of the second partition plate and is positioned in the airtight explosion cavity;
the second end of the first dipole antenna metal tube is detachably connected with a first growing metal tube, and the second end of the second dipole antenna metal tube is detachably connected with a second growing metal tube.
2. The ignition test device according to claim 1, wherein the external radio frequency source module is connected with a protection circuit, an output end of the protection circuit is connected with a coaxial cable, an outer core of the coaxial cable is electrically connected with the second dipole antenna metal tube, an inner core of the coaxial cable is electrically connected with the first dipole antenna metal tube, and the first dipole antenna metal tube and the second dipole antenna metal tube are used as transmitting antennas of the external radio frequency source module;
when an electromagnetic energy explosion-proof test is carried out, the driving motor drives the metal disc to rotate relative to the feed electrode, so that the other end of the feed electrode is intermittently contacted with the surface of the metal disc, combustible gas is ignited after the output power of the external radio frequency source module reaches a threshold value, and the power measuring circuit is used for obtaining the output power of the external radio frequency source module as a safety energy threshold value when the sensor detects that explosion occurs in the closed explosion cavity.
3. The ignition test apparatus according to claim 1, wherein the external radio frequency source module is a radio frequency source module, and the first dipole antenna metal tube and the second dipole antenna metal tube are used as receiving antennas of the radio frequency source module;
when an electromagnetic energy explosion-proof test is carried out, the driving motor drives the metal disc to rotate relative to the feed electrode, so that the other end of the feed electrode is in intermittent contact with the surface of the metal disc, combustible gas is ignited after the output power of the external radio frequency source module reaches a threshold value, and the power measuring circuit is used for obtaining the output power of the external radio frequency source module as a safety energy threshold value when the sensor detects that explosion occurs in the closed explosion cavity.
4. The ignition test apparatus according to claim 1, wherein a length of the feeder electrode in the closed explosion chamber is equal to or greater than a distance between the second separator and the metal disc plate surface.
5. The ignition test apparatus of claim 1, wherein the first dipole antenna metal tube is integrally formed with the first spacer, and the second dipole antenna metal tube is integrally formed with the second spacer.
6. The ignition test apparatus of claim 1, wherein the feed is a tungsten wire and the metal disk is a cadmium disk.
7. The ignition test apparatus according to claim 1, wherein the gas pipe is provided with a flame cut-off valve at an end thereof remote from the closed explosion chamber.
8. The test device of claim 1, wherein the tube housing is made of an explosion-proof transparent material.
9. A method of testing a multi-band radio frequency electromagnetic energy explosion-proof ignition, applied to the test apparatus of any one of claims 1 to 8, the method comprising:
s1, controlling combustible gas to be conveyed into the closed explosion cavity through the gas conveying pipe;
s2, controlling the metal disc to be electrically connected with the metal tube of the first dipole antenna, and controlling the feed electrode to be electrically connected with the metal tube of the second dipole antenna;
s3, controlling the driving motor to drive the metal disc to rotate through the driving rod so as to enable the metal disc to be intermittently and electrically connected with the feed electrode;
s4, controlling an external radio frequency source module to output a radio frequency signal with increasing power to the ignition test module based on a set frequency, and obtaining the output power of the external radio frequency source module when the sensor detects that the closed explosion cavity explodes, wherein the output power is used as a safety energy threshold value of the external radio frequency source module under the set frequency;
s5, adjusting the set frequency of the radio frequency signal output by the external radio frequency source module, replacing the first growing metal tube and the second growing metal tube which are matched with the adjusted set frequency, and repeating the steps S1-S4 to obtain the safe energy threshold value of the external radio frequency source module under the adjusted set frequency.
10. The method of claim 9, wherein controlling the external rf source module to output an rf signal with increasing power to the ignition test module based on a set frequency comprises:
and taking the first dipole antenna metal tube and the second dipole antenna metal tube as transmitting antennas of radio frequency signals of the external radio frequency source module, and controlling the external radio frequency source module to output radio frequency signals with increasing power to the ignition test module through a coaxial cable based on the set frequency.
11. The method of claim 9, wherein controlling the external rf source module to output an rf signal with increasing power to the ignition test module based on a set frequency comprises:
and taking the first dipole antenna metal tube and the second dipole antenna metal tube as receiving antennas of radio frequency signals of the external radio frequency source module, and controlling the external radio frequency source module to wirelessly transmit radio frequency signals with increasing power to the ignition test module based on the set frequency.
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| BE539755A (en) * | 1954-12-24 | |||
| DE1918145C3 (en) * | 1969-04-10 | 1978-10-26 | Softal Electronik Gmbh, 2000 Hamburg | Device for the surface treatment of parts or webs made of plastic, metal, paper or textiles by means of high-frequency discharge |
| US3796885A (en) * | 1972-02-10 | 1974-03-12 | Phillips Petroleum Co | Apparatus for treating a moving surface with a spark discharge |
| US3997787A (en) * | 1975-04-25 | 1976-12-14 | Bain Griffith | Apparatus and method for detecting explosives |
| AU6956196A (en) * | 1995-08-23 | 1997-03-27 | Gregory J. Gormley | Method and apparatus for testing and measuring for porosity and anomalies of nonconductive materials using electron beam |
| CN201837611U (en) * | 2010-05-11 | 2011-05-18 | 北京大通永安科技有限公司 | Detector for trace explosive on surface of certificate |
| CN202111454U (en) * | 2011-06-14 | 2012-01-11 | 山东新华医疗器械股份有限公司 | Power supply voltage regulation and control circuit for X-ray diagnostic machine |
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| CN103163160B (en) * | 2013-02-04 | 2015-08-12 | 中煤科工集团重庆研究院有限公司 | High-frequency electromagnetic wave safety performance test equipment |
| CN104730382B (en) * | 2015-03-04 | 2018-05-29 | 广州特种机电设备检测研究院 | For detecting the device and method of the explosion-proof performance of electromagnetic radiation class electrical equipment |
| CN205333878U (en) * | 2015-12-29 | 2016-06-22 | 北京凯威信达科技有限公司 | X ray source control case and X ray source device |
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