CN212807154U - Device for measuring three-dimensional temperature and humidity field of tall space - Google Patents
Device for measuring three-dimensional temperature and humidity field of tall space Download PDFInfo
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- CN212807154U CN212807154U CN202022758026.6U CN202022758026U CN212807154U CN 212807154 U CN212807154 U CN 212807154U CN 202022758026 U CN202022758026 U CN 202022758026U CN 212807154 U CN212807154 U CN 212807154U
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Abstract
The utility model discloses a device for three-dimensional humiture field in tall and big space is measured, this measuring device includes: the supporting plate and the moving part are arranged at the bottom of the supporting plate; the lower end of the supporting rod is fixedly connected with the upper side of the supporting plate, and the length of the supporting rod is adjustable; the temperature and humidity self-recording instrument comprises a supporting rod, a plurality of temperature and humidity self-recording instruments and a plurality of temperature and humidity self-recording instruments, wherein the temperature and humidity self-recording instruments can be arranged on the supporting rod, and are arranged along the length direction of the supporting rod. The measuring device is assembled in a horizontal state, is used for measuring in a vertical state, and is used for measuring a three-dimensional temperature and humidity field in a large space by adopting a measuring method of mobile scanning self-recording. The device for measuring the three-dimensional temperature and humidity field in the tall and large space has the advantages of being movable, capable of being quickly disassembled and assembled, adjustable in height, small in number of temperature and humidity self-recording instruments, free of arranging a sensor supporting net rack, free of power supply, short in test preparation time, small in influence on indoor airflow organization and use functions, real and accurate in measuring results, low in cost, good in universality and the like.
Description
Technical Field
The utility model relates to an environmental parameter measures technical field, concretely relates to a device that is used for three-dimensional humiture field in tall and big space to measure.
Background
With the development of aviation, aerospace and scientific experimental techniques, some high and large plants need to be built for the production, assembly, test or experiment of large products. For example, in rocket test plants and spacecraft test plants of space launch sites, because the tested products are tall and big, the indoor space is also tall and big, and the high requirements on indoor temperature and humidity environmental parameters are met, air conditioning systems are arranged in the high plants, and when the high plants are used before engineering acceptance or use, the three-dimensional field distribution of indoor temperature and humidity needs to be tested to check whether the environmental parameters meet the use requirements, but the technical difficulty and the workload of the indoor three-dimensional space temperature and humidity field test of the high plants are large.
In the past, when measuring temperature and humidity parameters of indoor space of a building, a fixed online measurement method is generally adopted, a fixed measurement net rack system is arranged in the indoor space, the measurement net rack system mainly comprises two forms of a support supported from bottom to top and a lifting rope hung from top to bottom, temperature and humidity sensors are fixedly arranged on the measurement net rack according to certain horizontal intervals and vertical height intervals, and an online data acquisition system is arranged for measuring the temperature and humidity. Three examples of prior art on-line measurements are as follows:
example one: in a thesis published in Huangchen and the like, "indoor thermal environment field test and energy consumption analysis of large-space buildings" (published in the 6 th period 52-55 of the year 2000 in the journal of heating ventilation and air conditioning), "fixed online measurement method is adopted to measure indoor temperature and humidity environment in summer in a home center of Shanghai International gymnastics, 221 measurement points are arranged at a height of 1.5m on a plane, and temperature and humidity distribution measurement at different heights in the vertical direction is carried out by taking 4 typical points;
example two: in a paper published by Linkai et al, "high-volume thermal stratification actual measurement and hot-pressing ventilation cooling potential" (published in the 2 nd stage of 2017 of "building energy conservation" journal: 1-6,16), a fixed online measurement method is adopted, a set of data acquisition device is arranged, the temperature distribution of a high-volume space of a certain fire-fighting experimental building of Nanjing industry university is measured, 2 points are selected on a plane, and the temperatures of 7 different heights at the two points are measured;
example three: the utility model discloses a wireless monitoring system of big space air parameter is disclosed in "a big space air parameter panorama monitoring system" of publication No. CN 208834480U, it is through setting up wireless sensor and wireless data acquisition system, the realization is to big space air humiture, the monitoring of environmental parameter such as carbon dioxide concentration and PM2.5, through wireless communication technique, the signal connection line between sensor and the data acquisition host computer has been cancelled, but still need set up the rack that supports fixed wireless sensor, still need set up the power supply line system to wireless sensor in addition.
However, the fixed online measuring devices are complex, long in construction period, large in number of sensors, high in installation difficulty and high in cost, and an indoor intensive measurement grid system can influence indoor airflow organization and use function and influence authenticity and accuracy of measuring results.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a device for three-dimensional humiture field measurement in tall and big space, this measuring device be convenient for equipment, sensor quantity is less, the cost is lower and very little to indoor air current tissue influence.
In order to achieve the above object, the utility model provides a following technical scheme:
a device for measuring a three-dimensional temperature and humidity field in a tall space adopts a mobile scanning self-recording measuring method to measure the three-dimensional temperature and humidity field, and comprises the following components:
the device comprises a supporting plate and a moving part arranged at the bottom of the supporting plate;
the lower end of the supporting rod is fixedly connected with the upper side of the supporting plate, and the length of the supporting rod is adjustable;
the temperature and humidity self-recording instrument comprises a plurality of temperature and humidity self-recording instruments, wherein the temperature and humidity self-recording instruments can be arranged on a supporting rod, the temperature and humidity self-recording instruments are arranged along the length direction of the supporting rod, and the distance between the temperature and humidity self-recording instruments and the bottom of a moving member is a preset measuring point height.
Preferably, in the above-mentioned device for three-dimensional humiture field measurement in tall and big space, the bracing piece includes that the multistage can be fixed connection's branch pole in proper order, the connection can be dismantled between the adjacent branch pole of bracing piece.
Preferably, in the device for measuring a three-dimensional temperature and humidity field in a large space, the two ends of the branch rod are provided with the insertion holes.
Preferably, the device for measuring the three-dimensional temperature and humidity field in the tall and big space further comprises a plug pin arranged between two adjacent branch rods, wherein the plug pin comprises an insertion rod and a hanging rod fixedly connected with the middle of the insertion rod, two ends of the insertion rod can be respectively inserted into the insertion holes of the two adjacent branch rods, the hanging rod is clamped between the two adjacent branch rods, and the temperature and humidity self-recording instrument is fixed on the hanging rod.
Preferably, the device for measuring the three-dimensional temperature and humidity field in the large and high space further comprises a top pin arranged at the top of the supporting rod, wherein the top pin is an L-shaped piece and comprises an inserting rod and a hanging rod which are fixedly connected, the inserting rod is used for being inserted into the top end of the branch rod at the uppermost end of the supporting rod, and the hanging rod is located at the top end of the inserting rod and used for being connected with the temperature and humidity self-recording instrument.
Preferably, in the device for measuring the three-dimensional temperature and humidity field in the tall and large space, a support is further fixed on the support plate, the support comprises an insertion pipe and a bottom plate, the insertion pipe is welded on the bottom plate, the insertion pipe is connected with the bottommost branch rod through a bolt, and the bottom plate can be detachably connected to the support plate.
Preferably, in the above apparatus for measuring a three-dimensional temperature and humidity field in a large space, the moving member is a plurality of universal wheels.
Preferably, in the device for measuring a three-dimensional temperature and humidity field in a tall and large space, the supporting plate and the supporting rod are both made of aluminum alloy materials.
When the device for measuring the three-dimensional humiture field in the tall and big space is applied, firstly, the device is assembled in a horizontal state, the supporting rod is assembled firstly, then the supporting plate is fixedly connected with the supporting rod, the length of the supporting rod is adjusted to the preset length, the acquisition period of the acquisition information of each humiture self-recording instrument is set, the humiture self-recording instruments are started, each humiture self-recording instrument is arranged on the supporting rod, and the height of the humiture self-recording instrument can be adjusted to the preset height by adjusting the connecting position of the humiture self-recording instrument and the supporting rod and the length of the lifting rope. Then the supporting rod is erected, the moving piece is moved by pushing and pulling the supporting rod to drive the supporting plate, the supporting rod and the temperature and humidity self-recording instruments to move, so that the device for measuring the three-dimensional temperature and humidity field in the tall space sequentially moves to each position to be measured on a plane, the device stays at each measuring position for a period of time, the temperature and humidity self-recording instruments at different heights on the supporting rod automatically measure and record temperature and humidity parameter values for at least 10 times in the staying period of time, and the average value of the last two recorded values is taken as a measured value. Therefore, measurement of three-dimensional temperature and humidity environment parameters of a high and large space is achieved. Compared with the measuring device and the measuring method in the prior art, the device and the measuring method for measuring the three-dimensional temperature and humidity field in the tall and large space have the advantages of small quantity of temperature and humidity sensors, no need of a support net rack system for arranging the sensors indoors, no need of supplying power to a large quantity of temperature and humidity sensors, short test preparation time, small influence on indoor airflow organization and use functions, real and accurate measuring result, low cost, good universality and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an erected state of a device for measuring a three-dimensional temperature and humidity field in a high and large space provided by an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of area A of FIG. 1;
FIG. 3 is a partial cross-sectional view of area B of FIG. 1;
FIG. 4 is a partial cross-sectional view of area C of FIG. 1;
fig. 5 is a top view of the device for measuring a three-dimensional temperature and humidity field in a large space according to an embodiment of the present invention;
in fig. 1-5:
1-moving piece, 2-supporting plate, 3-bracket, 31-inserting tube, 32-bottom plate, 4-bolt, 5-branch rod, 6-knock pin, 7-temperature and humidity self-recording instrument and 8-self-tapping screw.
Detailed Description
An object of the utility model is to provide a be used for the device of the three-dimensional humiture field measurement in tall and big space, this measuring device be convenient for equipment, sensor quantity is less, the cost is lower and very little to indoor air current organization and service function influence.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the device for measuring a three-dimensional temperature and humidity field in a large space provided by the present invention is mainly used for measuring three-dimensional temperature and humidity parameters in a large space.
The device for measuring the three-dimensional temperature and humidity field in the tall and large space comprises a supporting plate 2, a moving member 1, a supporting rod and a plurality of temperature and humidity self-recording instruments 7. Wherein, moving member 1 sets up in backup pad 2 bottoms, through pushing away (or drawing) the bracing piece, makes moving member 1 remove to drive backup pad 2, bracing piece and a plurality of humiture self-recording appearance 7 and remove wantonly in the big-height space together, realize the removal scanning self-recording measurement to the three-dimensional humiture parameter in big-height space.
The bracing piece includes that support 3, bolt 4, multistage can be fixed connection's branch pole 5 and knock pin 6 in proper order. The bracing piece lower extreme is support 3, and fixed connection can be dismantled to the upside of bracing piece and backup pad 2, and the bracing piece can be fixed on backup pad 2 promptly, also can dismantle from backup pad 2 and lift off. The length of the supporting rod is adjustable, namely the length of the supporting rod can be adjusted according to actual requirements. The support bar is perpendicular to the support plate 2.
A plurality of humiture self-recording appearance 7 can set up on the bracing piece, and a plurality of humiture self-recording appearance 7 are arranged along the length direction of bracing piece. After the length of bracing piece was adjusted to suitable length, can set up a plurality of humiture self-recording appearance 7 on the bracing piece to make a plurality of humiture self-recording appearance 7 arrange along the length direction of bracing piece, so the bracing piece is set up the back, and a plurality of humiture self-recording appearance 7 highly respectively are different. The distance between two adjacent humiture self-recorders 7 is a required height interval, and for example, the interval may be set to 1 m. The distance between each temperature and humidity self-recording instrument 7 and the bottom of the moving member 1 is the height of a preset measuring point of the temperature and humidity self-recording instrument
When using above-mentioned device that is used for three-dimensional humiture field measurement in tall and big space, earlier carry out measuring device's equipment under the horizontality, utilize bolt 4 with support 3, multistage minute pole 5 and knock pin 6 grafting equipment become the bracing piece, backup pad 2 and bracing piece fixed connection that will install moving member 1, adjust bracing piece length to predetermineeing length, set up the sampling cycle of humiture self-recording appearance 7, start humiture self-recording appearance 7, set up each humiture self-recording appearance 7 on the bracing piece, the height that humiture self-recording appearance 7 can be adjusted to the hookup location of adjustment humiture self-recording appearance 7 and bracing piece reaches and predetermines the height. Then erecting the measuring device, and moving the moving member 1 by pushing and pulling the supporting rod so as to drive the supporting plate 2, the supporting rod and the plurality of temperature and humidity self-recording instruments 7 to move, so that the device for measuring the three-dimensional temperature and humidity field in the tall space sequentially moves to each plane position to be measured, stays at each measuring position for a period of time, automatically measures the temperature and humidity self-recording instruments 7 with different heights on the supporting rod for at least 10 times according to a preset time interval in the staying period of time, records the measured parameter value, and takes the average value of the last two recorded values as a measured value. Therefore, the environmental parameters with different heights on any measuring plane position in a tall and big space are measured. Compared with the prior art, the device for measuring the three-dimensional temperature and humidity field in the tall and large space has the advantages of small quantity of temperature and humidity sensors, no need of a support net rack system for arranging the sensors indoors, short test preparation time, small influence on indoor airflow organization and use functions, real and accurate measurement results, low cost, good universality and the like.
When the temperature and humidity self-recording instruments 7 are arranged, the temperature and humidity self-recording instruments 7 can be arranged on the supporting rod at intervals according to the height requirement, so that after the supporting rod is erected, the height of each temperature and humidity self-recording instrument 7 meets the height requirement of each vertical measuring point.
In the embodiment shown in fig. 1, two adjacent sub-rods 5 are detachably connected. The plurality of sub-rods 5 are sequentially and fixedly connected to form the main body of the support rod. According to the actual demand can be through the quantity or the length of increase and decrease minute pole 5, can realize the regulation to bracing piece length. For example, the embodiment of fig. 1 selects 8 sub-rods 5 to be fixedly connected in sequence, but is not limited thereto.
But the bracing piece quick assembly disassembly that above-mentioned embodiment provided, and dismantle the back and be convenient for more transport and deposit, the bracing piece can the level be placed during the equipment, the equipment finish after stick up the bracing piece can, so be convenient for fast assembly more.
Further, the two ends of the branch rods 5 can be provided with jacks, and the adjacent two branch rods 5 are connected in a plug-in mode through the plug pins 4, so that the quick assembly disassembly is more convenient. The adjacent branch rods 5 can also be connected by screw threads, and are not limited herein.
The branch rod 5 can be a metal pipe or a plastic pipe, preferably, the branch rod 5 is a hollow round pipe, the outer diameter is 20-30 mm, and the wall thickness is 2-3 mm, which is not limited herein.
As shown in fig. 3, in the above embodiment, the device for measuring a three-dimensional temperature and humidity field in a large space further includes a plug pin 4 disposed between two adjacent branch rods 5, the plug pin 4 includes an insertion rod and a hanging rod fixedly connected to the middle of the insertion rod, two ends of the insertion rod can be respectively inserted into the insertion holes of two adjacent branch rods 5, the hanging rod is clamped between the two adjacent branch rods 5, and a temperature and humidity self-recording instrument 7 is fixed on the hanging rod. In this embodiment, insert respectively in the jack of two adjacent minute poles 5 through the both ends of inserted bar and realize two adjacent minute poles 5's quick grafting, the peg card just the peg stretches out between two adjacent minute poles 5 simultaneously, and the peg end has the aperture to be used for hanging fixed humiture self-recording appearance 7.
The length of minute pole 5 can be 1m, and certainly divide the quantity and the length of pole 5 to confirm according to measuring space's height, the embodiment in figure 1 has set up 8 sections and has divided pole 5, and every section divides pole 5 to be length 1m, can measure 9 m's height, adopts bolt 4 to connect between the upper and lower minute pole 5, easy dismounting. The upper portion and the lower portion of the inserted link of the bolt 4 are solid cylinders, the upper portion cylinder is inserted into the upper portion sub-link 5, the lower portion cylinder is inserted into the lower portion sub-link 5, the outer diameter of the inserted link is the same as the inner diameter of the sub-link 5, and the bolt 4 is tightly matched with the sub-link 5.
The temperature and humidity self-recording instrument 7 can be hung on a small hole at the end part of the hanging rod through a rope, the length of the hanging rope is determined according to the preset installation height of the temperature and humidity self-recording instrument, and the temperature and humidity self-recording instrument 7 can be further bonded, clamped or connected to the hanging rod through threads without limitation.
The middle part of the inserted bar can be also provided with an annular bulge, and two adjacent branch bars 5 are respectively propped against the two sides of the annular bulge. The hanging rod and the annular bulge are parallel and level to each other in the length direction of the insertion rod.
As shown in fig. 2, the device for measuring a three-dimensional temperature and humidity field in a large space further comprises a top pin 6 arranged at the top of the support rod, wherein the top pin 6 comprises an inserted link and a hanging link which are fixedly connected, the inserted link is used for being inserted into an insertion hole at the top of the branch link 5 at the uppermost end of the support rod, and the hanging link is used for being connected with a temperature and humidity self-recording instrument 7. The inserted link and the hanging link can be mutually perpendicular and be L type.
Of course, the support rod can also be a telescopic rod. For example, the bracing piece is X type telescopic link, and the contained angle of the cross bar of adjustment X type telescopic link alright realize adjusting the length of X telescopic link, this a device for three-dimensional humiture field measurement in tall and big space should still set up and carry out the locating part fixed to the tip of X telescopic link, and after the length adjustment of X telescopic link is to suitable length, it can to utilize the locating part to fix a position the tip of X telescopic link.
The bracing piece still can be for cup jointing telescopic link, and the cup jointing telescopic link includes many branch poles 5 that can overlap together in proper order, divides the extension that pole 5 realized the cup jointing telescopic link through the pull. Two adjacent minute poles 5 can set up button type buckle and card hole, and after minute pole 5 pull out, the button type buckle card is in order to realize two adjacent minute pole 5's relatively fixed in the card hole. When the telescopic rod is contracted, only the button type buckle needs to be pressed to separate the button type buckle from the clamping hole.
In order to fix the supporting rod, a support 3 is further fixed on the supporting plate 2, the support 3 and a branch rod 5 at the bottommost part of the supporting rod can be detachably connected and can be connected in an inserting mode, a threaded connection mode is adopted in the embodiment of fig. 1, and the branch rod 5 can be connected in an inserting mode.
The holder 3 comprises a base plate 32 and a cannula 31. The insertion tube 31 and the branch rod 5 at the bottommost part of the support rod can be connected through a bolt 4 so as to be convenient for quick assembly and disassembly. Bottom plate 32 and intubate 31 can adopt the same material, and intubate 31 is hollow pipe, and the external diameter is 20 ~ 30mm, and the wall thickness is 2 ~ 3mm, and its specification and size is usually the same with minute pole 5, and the intubate 31 welds in the middle part of bottom plate 32, and bottom plate 32 can detachably connect on backup pad 2, preferably adopts self tapping screw 8 to fix bottom plate 32 in backup pad 2 upside.
The supporting plate 2 can be a square solid wood plate or an aluminum alloy plate, the side length is 0.8-1.2 m, the thickness is 20-30 mm, and the supporting plate is used for supporting the supporting rod on the upper portion.
The support 3, the bolt 4, the branch rod 5 and the ejector pin 6 can be made of aluminum alloy materials, so that the total mass of the device for measuring the three-dimensional temperature and humidity field in the tall and large space is reduced, and the device is convenient to disassemble, assemble, move, store and transport.
Preferably, the moving member 1 may be a roller. Specifically, the moving member 1 may be a plurality of universal wheels, and four universal wheels may be provided at the bottom of the support plate 2. Thus, the measuring device can be conveniently moved to any direction, and the universal wheel can be fixed below the supporting plate 2 by adopting a self-tapping screw 8.
The humiture self-recording instrument 7 can automatically measure and record humiture data according to a set sampling period, the measurement precision of the humiture self-recording instrument meets the requirement of measurement precision, the temperature measurement precision is usually not lower than +/-0.3 ℃, the relative humidity measurement precision is not lower than +/-3%, and the humiture self-recording instrument is required to have higher response speed. The humiture self-recording instruments 7 are respectively hung on the hanging rods of the bolts 4 according to the height requirements of the vertical measuring points, and the humiture self-recording instruments 7 at the lowest position can also be fixed on the supporting plate 2. The sampling period of the temperature and humidity self-timer 7 is usually set to 20S to 30S.
The embodiments of the present invention are described in a progressive manner, each embodiment focuses on the differences from the other embodiments, and the same and similar parts between the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Claims (8)
1. A device for measuring a three-dimensional temperature and humidity field in a tall space adopts a mobile scanning self-recording measuring method to measure the three-dimensional temperature and humidity field, and is characterized by comprising the following steps:
the device comprises a supporting plate (2) and a moving part (1) arranged at the bottom of the supporting plate (2);
the lower end of the supporting rod is fixedly connected with the upper side of the supporting plate, and the length of the supporting rod is adjustable;
the temperature and humidity self-recording device comprises a plurality of temperature and humidity self-recording instruments (7) which can be arranged on the supporting rod, the temperature and humidity self-recording instruments (7) are arranged along the length direction of the supporting rod, and the distance between the temperature and humidity self-recording instruments (7) and the bottom of the moving piece (1) is a preset measuring point height.
2. The device for measuring the three-dimensional temperature and humidity field in the tall space according to claim 1, wherein the supporting rods comprise a plurality of sections of branch rods (5) which can be fixedly connected in sequence, and adjacent branch rods (5) of the supporting rods are detachably connected.
3. The device for measuring the three-dimensional temperature and humidity field in the tall space according to claim 2, wherein two ends of the branch rod (5) are provided with jacks.
4. The device for measuring the three-dimensional temperature and humidity field in the tall space according to claim 3, further comprising a plug pin (4) arranged between two adjacent branch rods (5), wherein the plug pin (4) comprises an insertion rod and a hanging rod fixedly connected with the middle of the insertion rod, two ends of the insertion rod can be respectively inserted into the insertion holes of the two adjacent branch rods (5), the hanging rod is clamped between the two adjacent branch rods (5), and the temperature and humidity self-recording instrument (7) is fixed on the hanging rod.
5. The device for measuring the three-dimensional humiture field in the tall space according to claim 3, further comprising a top pin (6) disposed at the top of the supporting rod, wherein the top pin (6) is an L-shaped member and comprises an inserting rod and a hanging rod which are fixedly connected, and wherein the inserting rod is used for being inserted into the top end of the branch rod (5) at the uppermost end of the supporting rod, and the hanging rod is located at the top end of the inserting rod and is used for being connected with the humiture self-recording instrument (7).
6. The device for measuring the three-dimensional humiture field in the tall space according to claim 1, wherein a support (3) is further fixed on the support plate (2), the support (3) comprises an insertion tube (31) and a bottom plate (32), the insertion tube (31) is welded on the bottom plate, the insertion tube (31) is connected with the bottommost branch rod (5) through a plug pin (4), and the bottom plate (32) can be detachably connected on the support plate.
7. The device for measuring the three-dimensional temperature and humidity field in the tall space according to claim 1, characterized in that the moving member (1) is a plurality of universal wheels.
8. The device for measuring the three-dimensional temperature and humidity field in the tall space according to claim 1, wherein the supporting plate and the supporting rod are both made of aluminum alloy materials.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112344999A (en) * | 2020-11-25 | 2021-02-09 | 中国人民解放军63921部队 | Device and method for measuring three-dimensional temperature and humidity field of tall space |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112344999A (en) * | 2020-11-25 | 2021-02-09 | 中国人民解放军63921部队 | Device and method for measuring three-dimensional temperature and humidity field of tall space |
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