Multi-parameter test system suitable for complex environment

Abstract

The invention provides a multi-parameter test system suitable for a complex environment. Relates to the field of environmental monitoring, and comprises a multi-channel physical parameter acquisition device and an anti-interference sealing shell, wherein the multi-channel physical parameter acquisition device is configured to synchronously acquire various environmental physical parameters through different channels; the environmental physical parameters comprise at least two of temperature, pressure, vibration, heat flux and flow; the multi-channel physical parameter acquisition device is integrally arranged in the anti-interference sealing shell in a sealing manner; the anti-interference sealing shell can provide protection against heat, force, magnetism and corrosive environment interference; a wire leading-out through hole is formed in the side wall of the anti-interference sealing shell; a plurality of channel input ports of the multi-channel physical parameter acquisition device are connected with data transmission wires respectively, and the data transmission wires penetrate through the wire leading-out through holes and are electrically connected with signal output ends of corresponding parameter sensors arranged outside the anti-interference sealing shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmental monitoring, and in particular to a multi-parameter testing system suitable for complex environments. BACKGROUND

[0002] Physical parameters (temperature, pressure, flow, heat flux density, etc.) are the core control indicators in the fields of industrial production (such as power, chemical industry, metallurgy), aerospace, environmental monitoring, etc., and their measurement accuracy is directly related to system safety, energy efficiency and product quality. Taking the development and testing of military equipment as an example, for the performance monitoring of armored vehicles, aerospace power hypersonic aircraft, etc., the monitoring equipment needs to be able to adapt to large air dynamic wind tunnel testing, and to work long-term under extreme temperature conditions, flight vibration, battlefield environment transportation vibration, etc., while also meeting the requirements of multi-point synchronous measurement. However, the current multi-parameter testing system generally has problems such as single function, poor universality, poor mobility and low testing efficiency, especially in complex application environments (such as high temperature and high pressure, electromagnetic interference, sand / deteriorating medium, vibration impact), which can cause problems such as sensor drift, signal transmission attenuation, and data distortion.

[0003] The measurement scheme of the existing multi-parameter testing system is designed around "sensor adaptation + signal processing + data integration", and the core technical path includes two kinds of modular integration scheme and integrated integration scheme.

[0004] Among them, the modular scheme adopts the "general-purpose host + special sensor module" architecture, customizes sensors for different physical parameters, and realizes module splicing and data aggregation through standardized interfaces. Its advantages are high flexibility of the measurement system, which can add or reduce parameter modules according to the scene, low maintenance cost in the later period, and single module failure does not affect the overall operation, but there is a millisecond delay in data synchronization between modules, which easily loses parameter correlation in dynamic working conditions, and at the same time, multi-module integration easily leads to a large equipment volume, which is not suitable for narrow spaces.

[0005] The integrated integration scheme integrates multi-parameter sensors, signal conditioning circuits, and data acquisition units on the same hardware platform, and realizes parameter synchronous acquisition and real-time calculation through an embedded system. This way has strong data synchronization, adapts to dynamic complex scenes, and has small equipment volume and low power consumption, which can be used in mobile scenes such as vehicles and aircraft, but on the other hand, it also has problems such as high hardware integration, high customization cost, and single component failure that may cause the whole to fail, which requires redundant design to improve equipment reliability.

[0006] In summary, the existing single-parameter or laboratory-level measurement equipment cannot meet the on-site demand for "real-time, accurate, stable, and multi-parameter synchronous acquisition", which has promoted the technical research and development of multi-parameter testing systems dedicated to complex environments.

[0007] Combined with the analysis of the use scene of the multi-parameter test, the design and development of the system should fully consider the environmental interference such as wide temperature range, electromagnetic interference, environmental pressure, vibration impact and sand dust, so as to ensure the safe and reliable operation of the multi-parameter test system, and meet the requirements of accurate data acquisition and stable data transmission, and the calibration of the basic environment for single-parameter and multi-parameter measurement should be carried out, and the measurement parameter correction factor database is formed to meet the measurement accuracy requirements in complex environment. On this basis, combined with the use cycle requirements of the measurement equipment, the modular measurement structure should be used in the design process to ensure the simplicity of the system.

[0008] Therefore, it is an urgent need to develop a physical parameter test system with strong anti-interference ability, high adaptability to complex environment and long-term stability in use process, which is an upgrade from "single-point static measurement" to "global dynamic monitoring", and is also a practical requirement for the iteration of physical multi-parameter test technology in complex environment under the background of industrial digital transformation. SUMMARY

[0009] To solve the technical problems existing in the prior art, the purpose of the present application is to provide a multi-parameter test system suitable for complex environment, which can greatly reduce the influence of vibration impact and electromagnetic interference during equipment use, and effectively ensure the test accuracy of the multi-parameter test system.

[0010] To achieve the above-mentioned purpose of the application, the present application provides a multi-parameter test system suitable for complex environment, comprising a multi-channel physical parameter acquisition device and an anti-interference sealed shell:

[0011] The multi-channel physical parameter acquisition device is configured to synchronously acquire multiple environmental physical parameters through different channels;

[0012] The environmental physical parameters include at least two of temperature, pressure, vibration, heat flux density and flow rate;

[0013] The multi-channel physical parameter acquisition device is integrally sealed in the anti-interference sealed shell;

[0014] The anti-interference sealed shell can provide protection against heat, force, magnetism and corrosive environmental interference;

[0015] The side wall of the anti-interference sealed shell is provided with a wire leading through hole;

[0016] The multi-channel physical parameter acquisition device is provided with a plurality of channel input ports, and each channel input port is connected with a data transmission wire, the data transmission wire passes through the wire leading through hole, and is electrically connected with the signal output end of the corresponding parameter sensor arranged outside the anti-interference sealed shell.

[0017] According to one technical scheme of the present application, the anti-interference sealed shell comprises an outer shell;

[0018] The outer shell is made of metal and is coated with a composite protective coating on its exterior.

[0019] The composite protective coating includes a fluorocarbon layer on the surface, an oxide layer in the middle, and a metal layer at the bottom.

[0020] The oxide layer is at least one of an aluminum oxide layer or a chromium oxide layer.

[0021] The metal layer is at least one of a nickel layer, a zinc layer, or a nickel-chromium alloy layer.

[0022] According to one technical solution of the present invention, the anti-interference sealing housing further includes a fiber heat insulation layer;

[0023] The fiber insulation layer is fixed inside the outer shell;

[0024] The fiber insulation layer is at least one of aluminum silicate fiber layer, alumina fiber layer, mullite fiber layer and polycrystalline alumina fiber layer.

[0025] According to one technical solution of the present invention, the anti-interference sealing housing further includes a plurality of springs;

[0026] At least one spring is connected between each outer surface of the fiber insulation layer and the corresponding inner surface of the outer shell, with the two ends of the spring fixed to the fiber insulation layer and the outer shell, respectively.

[0027] According to one technical solution of the present invention, the anti-interference sealing housing further includes a phase change heat insulation layer;

[0028] The phase change insulation layer is fixed to the inner wall of the fiber insulation layer;

[0029] The phase change insulation layer includes a phase change material encapsulation shell, and the phase change material encapsulation shell is provided with a first phase change cavity and a second phase change cavity that are isolated from each other.

[0030] The first phase change cavity is sealed and filled with water for heat absorption through liquid-gas phase change.

[0031] The second phase change cavity is sealed and filled with an inorganic salt-based solid-liquid phase change material for heat absorption through solid-liquid phase change.

[0032] According to one technical solution of the present invention, the anti-interference sealing housing further includes an electromagnetic shielding layer;

[0033] The electromagnetic shielding layer includes a copper alloy shell with one open end and a matching copper alloy cover plate; the copper alloy is beryllium copper or phosphor bronze.

[0034] The multi-channel physical parameter acquisition device is fixed inside the copper alloy housing;

[0035] The copper alloy cover plate is fastened to the opening of the copper alloy shell, and the joint between the two is sealed with conductive adhesive, thereby electrically connecting the copper alloy cover plate to the copper alloy shell.

[0036] The outer wall of the electromagnetic shielding layer is coated with a conductive shielding coating.

[0037] The conductive shielding coating is a polymer-based coating containing silver-based, nickel-based, or carbon-based conductive fillers.

[0038] According to one technical solution of the present invention, a multi-channel physical parameter acquisition device includes a parameter acquisition processor, a parameter acquisition module, a timing module, and a storage module;

[0039] The parameter acquisition processor is configured to generate and send parameter acquisition trigger signals;

[0040] The parameter acquisition module is configured to synchronously acquire corresponding environmental physical parameters through multiple channels in response to the parameter acquisition trigger signal.

[0041] The time synchronization module is configured to receive external satellite time synchronization signals and synchronize and correct the system time based on the external satellite time synchronization signals;

[0042] The storage module is configured to associate and store the collected environmental physical parameters according to the corrected timestamp.

[0043] According to one technical solution of the present invention, the multi-channel physical parameter acquisition device further includes a wireless communication module and an antenna;

[0044] The wireless communication module is disposed inside the anti-interference sealed housing;

[0045] The antenna is disposed outside the anti-interference sealed housing;

[0046] The antenna is connected to the wireless communication module via an RF cable, and an RF feedthrough connector is provided at the location where the RF cable passes through the anti-interference sealed housing; and the housing of the RF feedthrough connector is electrically connected to the electromagnetic shielding layer.

[0047] The wireless communication module is configured to use LoRa for data transmission;

[0048] Multiple multi-parameter test systems are constructed into a distributed measurement network through the wireless communication module, with each multi-parameter test system serving as a node in the distributed measurement network.

[0049] The time synchronization module is also configured to correct and synchronize the system time of each node in the distributed measurement network.

[0050] According to one technical solution of the present invention, the multi-channel physical parameter acquisition device further includes a data compensation module and a correction factor library;

[0051] The data compensation module is configured as follows:

[0052] The corresponding environmental physical parameters are compensated and corrected based on the correction factor.

[0053] The correction factor is calibrated in advance by the multi-parameter testing system and stored in the correction factor library.

[0054] According to one technical solution of the present invention, it further includes a remote data receiving end;

[0055] The remote data receiving end is configured to receive environmental physical parameters from multiple multi-parameter testing systems; and to display the environmental physical parameters according to a preset report template.

[0056] The beneficial effects of the multi-parameter testing system of the present invention, which is suitable for complex environments, are as follows:

[0057] 1. Through the design of a high-strength corrosion-resistant sealed shell, a multi-degree-of-freedom stable support vibration damping spring, a fiber insulation layer, a phase change insulation layer, and a copper alloy shell, the impact of vibration, shock, and electromagnetic interference during equipment use can be greatly reduced, and the interference of complex environments such as temperature changes, sand and salt spray, and electromagnetic radiation on test accuracy can be reduced to a certain extent.

[0058] 2. The multi-parameter testing system supports multi-channel parallel and independent operation, facilitating the sensing and monitoring of different physical parameters and data output. This allows for the measurement of multiple physical quantities in complex environments, improving equipment testing efficiency. Simultaneously, compensation through database correction factors effectively ensures the testing accuracy of the multi-parameter testing system.

[0059] 3. The multi-point network distributed measurement design can support high-precision and high-speed acquisition and intelligent analysis of multiple parameters in a wide range of scenarios. At the same time, combined with Beidou time synchronization and LORA wireless transmission technology, it can ensure long-distance, synchronous and real-time transmission of measurement data, which facilitates the development of collaborative testing work. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0061] Figure 1This diagram schematically illustrates the external structure of a multi-parameter testing system suitable for complex environments according to an embodiment of the present invention.

[0062] Figure 2 The schematic diagram shows a top cross-sectional view of a multi-parameter testing system suitable for complex environments according to an embodiment of the present invention.

[0063] Figure 3 This schematic diagram illustrates the structure of an electromagnetic shielding layer in a multi-parameter testing system suitable for complex environments, according to an embodiment of the present invention.

[0064] Figure 4 This schematic diagram illustrates the structure of a multi-channel physical parameter acquisition device in a multi-parameter testing system suitable for complex environments, according to an embodiment of the present invention.

[0065] Figure 5 The diagram illustrates the electrical structure of a multi-parameter testing system suitable for complex environments according to one embodiment of the present invention.

[0066] The specific reference numerals in the attached figures are as follows:

[0067] Multi-channel physical parameter acquisition device 1, parameter acquisition processor 1-1, parameter acquisition module 1-2, timing module 1-3, storage module 1-4, wireless communication module 1-5, antenna 1-6, data compensation module 1-7, correction factor library 1-8, power supply module 1-9, anti-interference sealed shell 2, outer shell 2-1, fiber heat insulation layer 2-3, spring 2-2, phase change heat insulation layer 2-4, phase change material encapsulation shell 2-4-1, electromagnetic shielding layer 2-5, copper alloy shell 2-5-1, copper alloy cover plate 2-5-2, remote data receiving end 3. Detailed Implementation

[0068] The description of the embodiments in this specification should be taken in conjunction with the accompanying drawings, which should form part of the complete specification. In the drawings, the shape or thickness of the embodiments may be exaggerated and may be indicated in a simplified or convenient manner. Furthermore, parts of the various structures in the drawings will be described separately; it is worth noting that elements not shown in the figures or not described in words are in a form known to those skilled in the art.

[0069] The descriptions of the embodiments herein, including any references to directions and orientations, are for ease of description only and should not be construed as limiting the scope of the invention. The following description of preferred embodiments involves combinations of features, which may exist independently or in combination; the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims. Figures 1-5 As shown; Specific Implementation Method 1

[0071] This embodiment provides a multi-parameter testing system suitable for complex environments, comprising a multi-channel physical parameter acquisition device 1 and an anti-interference sealed housing 2.

[0072] The multi-channel physical parameter acquisition device 1 is configured to simultaneously acquire multiple environmental physical parameters through different channels;

[0073] Environmental physical parameters include at least two of the following: temperature, pressure, vibration, heat flux density, and flow rate;

[0074] The multi-channel physical parameter acquisition device 1 is completely sealed inside the anti-interference sealed housing 2;

[0075] The anti-interference sealed housing 2 provides protection against interference from thermal, mechanical, magnetic, and corrosive environments;

[0076] The side wall of the anti-interference sealing housing 2 is provided with a wire lead-out through hole;

[0077] The multi-channel physical parameter acquisition device 1 has multiple input ports connected to data transmission wires. The data transmission wires pass through wire lead-out holes and are electrically connected to the signal output terminals of the corresponding parameter sensors located outside the anti-interference sealed housing 2.

[0078] In this embodiment, the multi-parameter testing system includes two parts: a multi-channel physical parameter acquisition device 1 (multi-parameter tester body) and a supporting protection system.

[0079] The protection system has the functions of resisting thermal-mechanical-magnetic interference and sealing. The multi-channel physical parameter acquisition device 1 consists of several parts, including multiple data source acquisition terminals (probes, sensors, etc.), wireless information transmission and receiving system, etc. Through multi-level collaborative design, a comprehensive protection system for the multi-channel physical parameter acquisition device 1 is constructed, which can ensure the reliable monitoring and transmission of physical parameters.

[0080] Environmental physical parameters include, but are not limited to, at least one of the following: temperature, pressure, vibration acceleration, humidity, magnetic field strength, heat flux density, strain, displacement, wind speed, salt spray concentration, and dust particle concentration.

[0081] The wire lead-out through hole can be provided in the form of a waterproof connector, a shielded connector, or a silicone potted wire hole. Specific Implementation Method Two

[0083] This embodiment is a further explanation of embodiment one. In this embodiment, the anti-interference sealing housing 2 includes an outer shell 2-1.

[0084] The outer shell 2-1 is made of metal and is coated with a composite protective coating on the outside.

[0085] The composite protective coating consists of a top fluorocarbon layer, a middle oxide layer, and a bottom metal layer;

[0086] The oxide layer is at least one of an aluminum oxide layer or a chromium oxide layer.

[0087] The metal layer is at least one of a nickel layer, a zinc layer, or a nickel-chromium alloy layer.

[0088] In this embodiment, the first layer (outermost layer) of the multi-parameter testing system is configured to achieve complex environmental protection under interference from thermal (humid heat, temperature), force (pressure, vibration), magnetic (electromagnetic), and corrosive (salt spray, dust) environments.

[0089] The outer casing 2-1 (box) of this embodiment is used for pressure-salt spray-dust protection (rigid outer shell anti-corrosion coating with special lock seal): The outer casing 2-1 uses a stainless steel substrate as the outer shell material. On the surface of the stainless steel substrate, a multi-layer composite coating is sprayed, that is, adopting the structure of "bottom metal layer + middle oxide layer + surface fluorocarbon layer". The stainless steel material protects against pressure interference, the bottom metal layer improves adhesion, the middle oxide layer is resistant to high temperature corrosion (salt spray), and the surface fluorocarbon layer enhances weather resistance (dust corrosion), ensuring that the multi-parameter testing system can cope with extremely complex outdoor or industrial harsh environments.

[0090] In addition, the outer shell 2-1 is sealed and fixed with special latches (such as Southco A2 series compression latches, Hoffman H series shielded latches and other special electromagnetic shielded latches), which have the characteristics of small deformation under high temperature and high pressure and convenient use. After the exchange of hot and cold states, it can still be easily opened, and at the same time, it can ensure that the outer shell 2-1 is well sealed under long-term high temperature, high pressure and sand and dust environments. Specific Implementation Method 3

[0092] This embodiment is a further explanation of embodiment two. In this embodiment, the anti-interference sealing shell 2 also includes a fiber heat insulation layer 2-3.

[0093] The fiber insulation layer 2-3 is fixed inside the outer shell 2-1;

[0094] The fiber insulation layer 2-3 is at least one of aluminum silicate fiber layer, alumina fiber layer, mullite fiber layer and polycrystalline alumina fiber layer.

[0095] In this embodiment, a third layer of protection is provided for the multi-parameter testing system to achieve protection against complex environments under interference from thermal (humid heat, temperature), force (pressure, vibration), magnetic (electromagnetic), and corrosive (salt spray, dust) environments.

[0096] For the fiber insulation layer 2-3, a ZrO2-containing aluminum silicate fiber blanket can be selected as the thermal insulation material. This material has advantages such as low thermal conductivity and high temperature resistance. By adding the fiber insulation layer 2-3, the thermal protection requirements of the multi-channel physical parameter acquisition device 1 can be guaranteed.

[0097] Among them, the ZrO2 content in the ZrO2-containing aluminum silicate fiber blanket is 5% to 17%. Specific Implementation Method Four

[0099] This embodiment is a further explanation of embodiment three. In this embodiment, the anti-interference sealing housing 2 also includes a plurality of springs 2-2.

[0100] At least one spring 2-2 is connected between each outer surface of the fiber insulation layer 2-3 and the inner surface of the corresponding outer shell 2-1, with the two ends of the spring 2-2 fixed to the fiber insulation layer 2-3 and the outer shell 2-1 respectively.

[0101] In this embodiment, a second layer of protection is set up for the multi-parameter testing system to achieve protection against complex environments under interference from thermal (humid heat, temperature), force (pressure, vibration), magnetic (electromagnetic), and corrosive (salt spray, dust) environments.

[0102] Spring 2-2 provides multi-directional stable support and mechanical vibration protection. The vibration damping structure, such as spring 2-2, is provided between the inner wall of the outer shell 2-1 and the outer wall of the fiber insulation layer 2-3, thereby controlling the swing amplitude of the internal structure of the outer shell 2-1 in the spatial degree of freedom, maintaining the horizontal stability of the core multi-channel physical parameter acquisition device 1, and improving the vibration and impact resistance of the multi-channel physical parameter acquisition device 1 in complex environments.

[0103] The aforementioned springs 2-2 can be stainless steel helical compression springs, arranged at the corners and center of each outer surface of the fiber insulation layer 2-2 to achieve uniform support and multi-directional stability. For example, for a hexahedral fiber insulation layer 2-2, at least one spring 2-2 is provided on each of its six outer surfaces, with one spring at each of the four corners on four sides, and additional springs in the central area on the top and bottom surfaces to resist vertical impacts. The stiffness of the springs 2-2 is designed to match the expected vibration spectrum and the equipment mass.

[0104] Furthermore, since the fiber insulation layer 2-2 is a soft material (such as a fiber blanket), it cannot directly fix the spring 2-2. Therefore, a rigid support mesh can be wrapped around the fiber insulation layer 2-2 to support the spring 202. Detailed Implementation Method Five

[0106] This embodiment is a further explanation of embodiment four. In this embodiment, the anti-interference sealing shell 2 also includes a phase change heat insulation layer 2-4.

[0107] Phase change insulation layer 2-4 is fixed to the inner wall of fiber insulation layer 2-3;

[0108] The phase change insulation layer 2-4 includes a phase change material encapsulation shell 2-4-1, and the phase change material encapsulation shell 2-4-1 is provided with a first phase change cavity and a second phase change cavity that are isolated from each other.

[0109] The first phase change cavity is sealed and filled with water for heat absorption through liquid-gas phase change.

[0110] The second phase change cavity is sealed and filled with an inorganic salt-based solid-liquid phase change material for heat absorption through solid-liquid phase change.

[0111] In this embodiment, a fourth layer of protection is provided for the multi-parameter testing system to achieve protection against complex environments under interference from thermal (humid heat, temperature), force (pressure, vibration), magnetic (electromagnetic), and corrosive (salt spray, dust) environments.

[0112] Phase change insulation layer 2-4 is made by utilizing the characteristic of phase change isothermal energy storage material that undergoes a phase change near its phase change temperature, which can release or absorb a large amount of heat and can be used to store energy or control ambient temperature.

[0113] In this embodiment, the phase change insulation layer 2-4 adopts a two-stage phase change design. The phase change material encapsulation shell 2-4-1 is a sealed cavity formed by welding 304 stainless steel plates. The first phase change cavity and the second phase change cavity are arranged side by side along the thickness direction of the phase change material encapsulation shell 2-4-1. For example, the first phase change cavity is arranged on the inner side (the first stage is liquid-to-gas phase conversion, encapsulating deionized water as a medium to achieve vaporization and heat absorption, used to absorb a large amount of latent heat through vaporization at close to 100°C to cope with sudden internal high temperatures), and the second phase change cavity is arranged near the outer shell, filled with inorganic salt phase change material, which can complete the liquefaction and heat absorption to solid-to-liquid phase conversion, such as a solid-liquid phase change material made by mixing sodium sulfate decahydrate (Na2SO4·10H2O) and calcium chloride hexahydrate (CaCl2·6H2O) in a mass ratio of 2:1, used for rapid response to external temperature changes. This inorganic salt phase change material is white and fluffy, has plasticity, and can be tightly filled into the stainless steel cavity to avoid increased thermal resistance caused by gaps.

[0114] The two phase converter cavities are separated by a 304 stainless steel partition welded together. All welds are fully welded and leak-tested to ensure long-term sealing. Specific Implementation Method Six

[0116] This embodiment is a further explanation of embodiment five. In this embodiment, the anti-interference sealing housing 2 also includes an electromagnetic shielding layer 2-5.

[0117] The electromagnetic shielding layer 2-5 includes a copper alloy shell 2-5-1 with one end open and a matching copper alloy cover plate 2-5-2; the copper alloy is beryllium copper or phosphor bronze.

[0118] The multi-channel physical parameter acquisition device 1 is fixed inside the copper alloy housing 2-5-1;

[0119] The copper alloy cover plate 2-5-2 is fastened to the opening of the copper alloy housing 2-5-1, and the joint between the two is sealed with conductive adhesive, thus making the copper alloy cover plate 2-5-2 and the copper alloy housing 2-5-1 electrically connected.

[0120] The outer wall of the electromagnetic shielding layer 2-5 is coated with a conductive shielding coating;

[0121] The conductive shielding coating is a polymer-based coating containing silver-based, nickel-based, or carbon-based conductive fillers.

[0122] In this embodiment, the fifth layer of protection is provided for the multi-parameter testing system to achieve protection against complex environments under interference from thermal (humid heat, temperature), force (pressure, vibration), magnetic (electromagnetic), and corrosive (salt spray, dust) environments.

[0123] The copper alloy housing 2-5-1, in conjunction with the conductive shielding coating, provides electromagnetic interference protection. The copper alloy housing 2-5-1 is made of copper alloy material with high conductivity and high magnetic permeability (such as beryllium copper or phosphor bronze), which has high shielding effectiveness and can meet the requirements of blocking electromagnetic radiation interference and conducted interference.

[0124] In addition, to facilitate the placement and removal of the multi-channel physical parameter acquisition device 1, the electromagnetic shielding layer 2-5 has reserved a switch copper alloy cover plate 2-5-2 and a data cable outlet. For the local gaps between the copper alloy cover plate 2-5-2 and the outer shell 2-1, a conductive shielding coating needs to be sprayed on the surface, and conductive adhesive is used to seal the joints to ensure the electromagnetic signal blocking efficiency.

[0125] In the above embodiments, the multi-channel physical parameter acquisition device 1 is sealed by a high-strength, corrosion-resistant rigid outer shell 2-1, damped by a multi-degree-of-freedom stable support spring 2-2, insulated by a fiber insulation layer 2-3, insulated by a phase change insulation layer 2-4, and electromagnetically shielded by an electromagnetic shielding layer 2-5. This multi-layered, multi-level structure isolates single or coupled interference sources that may exist during multi-scenario measurements, ensuring the accuracy of physical parameter measurements and significantly improving the measurement reliability and adaptability of the testing instrument to complex environments. It reduces the impact of complex application environments on the measurement accuracy and lifespan of the parameter testing instrument, enhances the high-temperature resistance, vibration resistance, and positive and negative pressure resistance of the multi-parameter testing system, and significantly expands the application scope of the multi-channel physical parameter acquisition device 1. Detailed Implementation Method Seven

[0127] This embodiment is a further description of one of the embodiments one to six. In this embodiment, the multi-channel physical parameter acquisition device 1 includes a parameter acquisition processor 1-1, a parameter acquisition module 1-2, a timing module 1-3, and a storage module 1-4.

[0128] The parameter acquisition processor 1-1 is configured to generate and send a parameter acquisition trigger signal;

[0129] Parameter acquisition modules 1-2 are configured to synchronously acquire corresponding environmental physical parameters through multiple channels in response to a parameter acquisition trigger signal.

[0130] The timing modules 1-3 are configured to receive external satellite timing signals and synchronize and correct the system time based on the external satellite timing signals;

[0131] Storage modules 1-4 are configured to associate and store the collected environmental physical parameters with the corrected timestamps.

[0132] In this embodiment, the multi-channel physical parameter acquisition device 1 mainly consists of a parameter acquisition processor 1-1, a parameter acquisition module 1-2, a timing module 1-3, a storage module 1-4, and a power supply module 1-9.

[0133] Among them, the multi-channel parameter acquisition module 1-2 can work in parallel and independently, and is suitable for different sensors such as temperature, pressure, and vibration. The sensor converts the corresponding parameter signals into electrical signals, which are acquired by the multi-channel parameter acquisition module 1-2 and recorded and stored by the storage module 1-4.

[0134] The time synchronization modules 1-3 use BeiDou time synchronization to achieve system clock synchronization and are compatible with GPS mode, ensuring the time consistency of collected data. They guarantee time synchronization and inter-network coordination, and complete real-time data storage and wireless data transmission.

[0135] After powering on, the multi-channel physical parameter acquisition device 1 reads the configuration parameters, and the timing module 1-3 performs BeiDou timing synchronization. It then automatically determines whether the parameter acquisition processor 1-1 has generated a parameter trigger signal as the basis for acquiring environmental physical parameters. Environmental physical parameters include, but are not limited to: temperature, pressure, vibration acceleration, relative humidity, magnetic field strength, heat flux density, mechanical strain, and dust particle concentration. These environmental physical parameters are acquired in real time through corresponding sensor arrays and uniformly triggered, synchronously sampled, and timestamped by the parameter acquisition processor 1-1 to ensure strict spatiotemporal alignment of multi-source data.

[0136] The power module can use a built-in lithium battery.

[0137] The parameter acquisition module 1-2 can reserve a data acquisition interface. By reserving the data acquisition interface, the multi-parameter testing system can meet the requirements of synchronous monitoring of multiple physical quantities, expand the working mode and multi-source data fusion capability. Detailed Implementation Method Eight

[0139] This embodiment is a further explanation of embodiment seven. In this embodiment, the multi-channel physical parameter acquisition device 1 also includes a wireless communication module 1-5 and an antenna 1-6.

[0140] Wireless communication modules 1-5 are housed inside the anti-interference sealed housing 2;

[0141] Antennas 1-6 are mounted outside the anti-interference sealed housing 2;

[0142] Antenna 1-6 is connected to wireless communication module 1-5 via RF cable. RF cable passes through anti-interference sealed housing 2 and is equipped with RF feedthrough connector. The outer shell of RF feedthrough connector is electrically connected to electromagnetic shielding layer 2-5.

[0143] Wireless communication modules 1-5 are configured to use LoRa for data transmission;

[0144] Multiple multi-parameter test systems are constructed into a distributed measurement network through wireless communication modules 1-5, with each multi-parameter test system serving as a node in the distributed measurement network.

[0145] The timing modules 1-3 are also configured to correct and synchronize the system time of each node in the distributed measurement network.

[0146] In this embodiment, the multi-channel physical parameter acquisition device 1 also includes a wireless communication module 1-5 and an antenna 1-6 for data transmission and networking.

[0147] The RF feedthrough connector is an SMA or N-type coaxial feedthrough connector. Its metal flange is connected to the copper alloy housing 2-5-1 by welding or other methods to achieve low impedance electrical connection, ensuring shielding effectiveness in the required frequency band.

[0148] Through a distributed measurement method with multi-point networking, the multi-parameter testing system can achieve measurement of different sensors and high-precision, high-speed acquisition and intelligent analysis over a wide range. It is also suitable for measuring parameters such as vibration, pressure, high temperature, high humidity and high-intensity heat flow in harsh environments such as salt spray and sandstorms, thus effectively solving the testing and measurement problems in complex environments, long distances, multiple locations and high interference.

[0149] Employing LoRa transmission technology effectively increases the transmission distance of test data while maintaining low power consumption, significantly extending battery life. It also boasts advantages such as license-free frequency bands, low-cost infrastructure and nodes / terminals, the ability to connect tens of thousands of nodes, flexible scaling up or down as needed, and excellent network scalability, meeting the testing requirements of multiple parameters in complex environments.

[0150] The wireless transmission design and networking structure design of this embodiment adopt a highly scalable and stable data acquisition and transmission method, combined with timing modules 1-3, to achieve stable and reliable synchronous real-time transmission of measurement parameters under long-distance and strong obstruction conditions. Detailed Implementation Method Nine

[0152] This embodiment is a further explanation of embodiment seven. In this embodiment, the multi-channel physical parameter acquisition device 1 also includes a data compensation module 1-7 and a correction factor library 1-8.

[0153] Data compensation modules 1-7 are configured as follows:

[0154] The corresponding environmental physical parameters are compensated and corrected based on the correction factor.

[0155] The correction factor is calibrated in advance by a multi-parameter testing system and stored in the correction factor library 1-8.

[0156] In this embodiment, before carrying out multi-parameter measurement tasks, the multi-parameter testing system needs to be calibrated under fixed temperature, humidity and environmental pressure in the laboratory. Furthermore, in combination with the system's operating conditions, compensation and correction are simulated under actual operating conditions to form a database correction factor for single parameters and multiple parameters, so as to ensure the measurement accuracy of the system under different operating conditions.

[0157] Furthermore, through the interface expansion of parameter acquisition modules 1-2 and the matching of different physical parameter measurement devices, multi-site synchronous monitoring of single or multiple parameters can be achieved. Combined with the correction factor database constructed during the calibration phase, reliable parameter measurement can be completed. Detailed Implementation Method Ten

[0159] This embodiment is a further description of embodiment eight or nine. In this embodiment, a remote data receiving terminal 3 is also included.

[0160] The remote data receiver is configured to receive environmental physical parameters from multiple multi-parameter testing systems and display the environmental physical parameters according to a preset report template.

[0161] In this embodiment, the collected environmental physical parameters are processed by the parameter acquisition processor 1-1, stored according to the storage interval, and data is sent to the parameter acquisition processor 1-1 at regular intervals. The parameter acquisition processor 1-1 transmits the received environmental physical parameters to the remote data receiving terminal 3 for data display, and realizes report generation and historical data export, etc.

[0162] This invention presents a complex environment multi-parameter testing system integrating multi-level physical interference protection, multi-channel data acquisition and processing, and wireless data transmission. Through a combination of a high-strength, corrosion-resistant sealed shell, an internal multi-degree-of-freedom stable support spring structure, high-temperature heat-insulating fiber, a phase-change heat-insulating layer, and metallic electromagnetic shielding; multi-channel data acquisition; complex environment data compensation; and wireless data transmission with multi-point networked distributed measurement, it solves problems such as the limitations of single-parameter, single-point testing, environmental interference errors, and data transmission efficiency. This ensures the multi-parameter testing system can perform accurate multi-parameter measurements and reliable transmission in various complex environments, meeting the metrological testing standards for precision multi-parameter testing systems. It is irreplaceable in terms of adaptability to complex environmental conditions, multi-parameter measurement expansion, modular design, and real-time synchronous data transmission, and is particularly suitable for testing needs involving multiple scenarios and parameters, such as high pressure, salt spray, humidity, dust, vibration, electromagnetic interference, and high and low temperatures.

[0163] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0164] Finally, it should be noted that the above description represents a preferred embodiment of the present invention. It should be pointed out that although preferred embodiments have been described, those skilled in the art, once they understand the basic inventive concept of the present invention, can make various improvements and modifications without departing from the principles described herein. These improvements and modifications should also be considered within the scope of protection of the present invention. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

Claims

1. A multi-parameter testing system suitable for complex environments, characterized in that, Includes a multi-channel physical parameter acquisition device (1) and an anti-interference sealed housing (2): The multi-channel physical parameter acquisition device (1) is configured to simultaneously acquire multiple environmental physical parameters through different channels; The environmental physical parameters include at least two of temperature, pressure, vibration, heat flux density, and flow rate; The multi-channel physical parameter acquisition device (1) is completely sealed inside the anti-interference sealed housing (2); The anti-interference sealed housing (2) can provide protection against interference from thermal, mechanical, magnetic and corrosive environments; The side wall of the anti-interference sealing housing (2) is provided with a wire lead-out through hole; The multiple channel input ports of the multi-channel physical parameter acquisition device (1) are respectively connected to data transmission wires. The data transmission wires all pass through the wire lead-out holes and are electrically connected to the signal output terminals of the corresponding parameter sensors located outside the anti-interference sealing housing (2).

2. The multi-parameter testing system suitable for complex environments according to claim 1, characterized in that, The anti-interference sealing housing (2) includes an outer shell (2-1); The outer shell (2-1) is made of metal and is coated with a composite protective coating on its exterior. The composite protective coating includes a fluorocarbon layer on the surface, an oxide layer in the middle, and a metal layer at the bottom. The oxide layer is at least one of an aluminum oxide layer or a chromium oxide layer. The metal layer is at least one of a nickel layer, a zinc layer, or a nickel-chromium alloy layer.

3. The multi-parameter testing system suitable for complex environments according to claim 2, characterized in that, The anti-interference sealing housing (2) also includes a fiber insulation layer (2-3); The fiber insulation layer (2-3) is fixed inside the outer shell (2-1); The fiber insulation layer (2-3) is at least one of aluminum silicate fiber layer, alumina fiber layer, mullite fiber layer and polycrystalline alumina fiber layer.

4. The multi-parameter testing system suitable for complex environments according to claim 3, characterized in that, The anti-interference sealing housing (2) also includes multiple springs (2-2); At least one spring (2-2) is connected between each outer side of the fiber insulation layer (2-3) and the inner side of the corresponding outer shell (2-1), and the two ends of the spring (2-2) are respectively fixed to the fiber insulation layer (2-3) and the outer shell (2-1).

5. The multi-parameter testing system suitable for complex environments according to claim 4, characterized in that, The anti-interference sealing housing (2) also includes a phase change heat insulation layer (2-4); The phase change insulation layer (2-4) is fixed to the inner wall of the fiber insulation layer (2-3); The phase change insulation layer (2-4) includes a phase change material encapsulation shell (2-4-1), and the phase change material encapsulation shell (2-4-1) is provided with a first phase change cavity and a second phase change cavity that are isolated from each other. The first phase change cavity is sealed and filled with water for heat absorption through liquid-gas phase change. The second phase change cavity is sealed and filled with an inorganic salt-based solid-liquid phase change material for heat absorption through solid-liquid phase change.

6. The multi-parameter testing system suitable for complex environments according to claim 5, characterized in that, The anti-interference sealed housing (2) also includes an electromagnetic shielding layer (2-5); The electromagnetic shielding layer (2-5) includes a copper alloy shell (2-5-1) with one end open and a matching copper alloy cover plate (2-5-2); the copper alloy is beryllium copper or phosphor bronze; A multi-channel physical parameter acquisition device (1) is fixed inside the copper alloy housing (2-5-1); The copper alloy cover plate (2-5-2) is fastened to the opening of the copper alloy shell (2-5-1), and the joint between the two is sealed with conductive adhesive, thereby making the copper alloy cover plate (2-5-2) and the copper alloy shell (2-5-1) electrically connected. The outer wall of the electromagnetic shielding layer (2-5) is coated with a conductive shielding coating. The conductive shielding coating is a polymer-based coating containing silver-based, nickel-based, or carbon-based conductive fillers.

7. The multi-parameter testing system suitable for complex environments according to any one of claims 1 to 6, characterized in that, The multi-channel physical parameter acquisition device (1) includes a parameter acquisition processor (1-1), a parameter acquisition module (1-2), a timing module (1-3), and a storage module (1-4). The parameter acquisition processor (1-1) is configured to generate and send a parameter acquisition trigger signal; The parameter acquisition module (1-2) is configured to synchronously acquire corresponding environmental physical parameters through multiple channels in response to the parameter acquisition trigger signal; The timing module (1-3) is configured to receive external satellite timing signals and synchronize and correct the system time based on the external satellite timing signals; The storage modules (1-4) are configured to associate and store the collected environmental physical parameters with the corrected timestamps.

8. The multi-parameter testing system suitable for complex environments according to claim 7, characterized in that, The multi-channel physical parameter acquisition device (1) also includes a wireless communication module (1-5) and an antenna (1-6); The wireless communication modules (1-5) are disposed inside the anti-interference sealed housing (2); The antennas (1-6) are disposed outside the anti-interference sealed housing (2); The antenna (1-6) is connected to the wireless communication module (1-5) via an RF cable. An RF feedthrough connector is provided at the position where the RF cable passes through the anti-interference sealed housing (2). The housing of the RF feedthrough connector is electrically connected to the electromagnetic shielding layer (2-5). The wireless communication modules (1-5) are configured to use LoRa for data transmission; Multiple multi-parameter test systems are constructed into a distributed measurement network through the wireless communication modules (1-5), with each multi-parameter test system serving as a node in the distributed measurement network; The timing modules (1-3) are also configured to correct and synchronize the system time of each node in the distributed measurement network.

9. The multi-parameter testing system suitable for complex environments according to claim 7, characterized in that, The multi-channel physical parameter acquisition device (1) also includes a data compensation module (1-7) and a correction factor library (1-8). The data compensation module (1-7) is configured as follows: The corresponding environmental physical parameters are compensated and corrected based on the correction factor. The correction factor is calibrated in advance by the multi-parameter testing system and stored in the correction factor library (1-8).

10. The multi-parameter testing system suitable for complex environments according to claim 8 or 9, characterized in that, It also includes a remote data receiver (3); The remote data receiving terminal (3) is configured to receive environmental physical parameters from multiple multi-parameter test systems and display the environmental physical parameters according to a preset report template.

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