技术领域technical field
本发明属于纺织服装科学、电磁学相互交叉技术领域，涉及到电磁屏蔽织物屏蔽效能的测试装置与方法。The invention belongs to the intercrossing technical fields of textile and clothing science and electromagnetics, and relates to a testing device and method for the shielding effectiveness of electromagnetic shielding fabrics.
背景技术Background technique
电磁屏蔽织物也称防电磁辐射织物，可用来制作各种形状的柔性遮罩屏蔽体、防电磁辐射服装以及屏蔽型复合材料的基体等，在电力、航空、航天、环境、通信、国防以及人体健康防护等领域有着广泛的应用。因此，电磁屏蔽织物越来越受到广泛重视，其相关技术正在飞速发展。Electromagnetic shielding fabrics, also known as anti-electromagnetic radiation fabrics, can be used to make flexible shields of various shapes, anti-electromagnetic radiation clothing, and substrates of shielding composite materials. It has a wide range of applications in health protection and other fields. Therefore, electromagnetic shielding fabrics are getting more and more attention, and its related technologies are developing rapidly.
屏蔽效能是评价电磁屏蔽织物的一个关键指标。然而到目前为止，还未出现一种快速、灵活及准确测量电磁屏蔽织物屏蔽效能的装置，造成在实际生产、研究及销售中难以正确合理评价电磁屏蔽织物的屏蔽性能。目前已有的一些测试法造价昂贵，仅针对硬质材料，不适合电磁屏蔽织物这样的软质材料，且测试密闭性较差、频率广泛性较小、信号接受及发射距离难以灵活调整，难以保证测试结果的方便性、针对性及可靠性。因此，发明一种能快速准确、可测试电磁屏蔽织物屏蔽效能的装置和方法是迫切需要的。本发明正是基于这种背景而进行的。Shielding effectiveness is a key indicator for evaluating electromagnetic shielding fabrics. However, so far, there is no fast, flexible and accurate device for measuring the shielding effectiveness of electromagnetic shielding fabrics, which makes it difficult to correctly and reasonably evaluate the shielding performance of electromagnetic shielding fabrics in actual production, research and sales. Some of the existing test methods are expensive, only for hard materials, not suitable for soft materials such as electromagnetic shielding fabrics, and the test airtightness is poor, the frequency range is small, and the signal reception and transmission distance are difficult to adjust flexibly. Ensure the convenience, pertinence and reliability of test results. Therefore, it is urgent to invent a device and method that can quickly and accurately test the shielding effectiveness of electromagnetic shielding fabrics. It is against this background that the present invention is carried out.
发明内容Contents of the invention
本发明所要解决的技术问题是针对当前缺乏有效测试电磁屏蔽织物屏蔽效能的装置及方法的现状，提供一种成本低廉、操作方便、结果准确的电磁屏蔽织物屏蔽效能的分段管式测量装置及测试方法。The technical problem to be solved by the present invention is to provide a segmented tubular measuring device with low cost, convenient operation and accurate results for the shielding effectiveness of electromagnetic shielding fabricsand Test Methods.
为了解决上述问题提供以下技术方案：一种电磁屏蔽织物屏蔽效能的分段管式测量装置，主要由信号发射端和信号接收端组成，信号发射端和信号接收端均设有支架，信号发射端主要由信号发射管、发射丝扣及织物阻挡管依次连接组成；信号接收端信号接收管、接收丝扣及织物夹持管组成；信号发射管底面设有信号发射天线，信号接收管底面设有信号接收器。In order to solve the above problems, the following technical solutions are provided: a segmented tube-type measuring device for the shielding effectiveness of electromagnetic shielding fabrics, which is mainly composed of a signal transmitting end and a signal receiving end. Both the signal transmitting end and the signal receiving end are equipped with brackets. It is mainly composed of a signal transmitting tube, a transmitting thread and a fabric blocking tube; the signal receiving end is composed of a signal receiving tube, a receiving thread and a fabric clamping tube; the bottom of the signal transmitting tube is provided with a signal transmitting antenna, and the bottom of the signal receiving tube is provided with a signal receiver.
信号发射管与织物阻挡管通过发射丝扣螺纹连接，织物阻挡管为中空并且内设阻挡环，织物阻挡管靠近发射丝扣处有外螺纹，阻挡环靠近织物夹持管处有内螺纹；织物阻挡管外侧有至少两个手柄孔，用于安装手柄，织物阻挡管两侧安装有支架；信号发射管底面中心设有内螺纹孔，用螺帽将信号发射天线固定杆旋紧固定在内螺纹孔中，信号发射天线固定杆的另一端设有螺纹，用来固定信号发射天线。The signal transmitting tube and the fabric blocking tube are threadedly connected by a launching thread. The fabric blocking tube is hollow and has a blocking ring inside. The fabric blocking tube has an external thread near the transmitting thread, and the blocking ring has an internal thread near the fabric clamping tube; There are at least two handle holes on the outside of the blocking tube, which are used to install the handle, and brackets are installed on both sides of the fabric blocking tube; there is an internal thread hole in the center of the bottom surface of the signal transmitting tube, and the signal transmitting antenna fixing rod is screwed and fixed to the internal thread with a nut In the hole, the other end of the signal transmitting antenna fixing rod is provided with threads for fixing the signal transmitting antenna.
信号接收管与织物夹持管通过接收丝扣螺纹连接，织物夹持管为中空，靠近织物阻挡管处有外螺纹，外螺纹外径比织物夹持管外径小，其尺寸差等于阻挡管的壁厚；外螺纹前端设有壁厚环，其边缘宽度稍小于织物阻挡管中的阻挡环的边缘宽度；壁厚环内有针孔，与壁厚环相配合的织物固定环上设有细针，细针可穿透织物插入针孔内以固定织物；织物夹持管外侧有至少两个手柄孔，用于安装手柄以织物夹持管，织物夹持管两侧安装有支架；信号接收管底面中心也设有内螺纹孔，用螺帽将接收器固定杆旋紧固定在内螺纹孔中，接收器固定杆的另一端有螺纹，用来固定信号接收器。The signal receiving tube and the fabric clamping tube are connected by receiving threads. The fabric clamping tube is hollow, and there is an external thread near the fabric blocking tube. The outer diameter of the external thread is smaller than that of the fabric clamping tube, and the size difference is equal to the blocking tube. The wall thickness; the front end of the external thread is provided with a wall thickness ring, the edge width of which is slightly smaller than the edge width of the barrier ring in the fabric barrier tube; there are pinholes in the wall thickness ring, and the fabric fixing ring matched with the wall thickness ring is provided with Fine needles, fine needles can penetrate the fabric and insert into the pinholes to fix the fabric; there are at least two handle holes on the outside of the fabric clamping tube, which are used to install the handle and the fabric clamping tube, and brackets are installed on both sides of the fabric clamping tube; signal The center of the bottom surface of the receiving tube is also provided with an internally threaded hole, the receiver fixing rod is screwed and fixed in the internally threaded hole with a nut, and the other end of the receiver fixing rod is threaded for fixing the signal receiver.
信号发射管由内部极为光滑的纯金属制作，壁厚0.2-5cm，长度为10cm-50cm，直径为5cm-60cm；信号发射管底面中心有内螺纹孔，内螺纹孔直径与信号发射天线固定杆匹配；信号发射天线固定杆为硬质塑料或高分子材料制作，直径为0.5cm-5cm，长度不超过发射管长度的1/3；信号发射天线固定杆一端可插入底座的内螺纹孔内旋紧，并用螺帽固定，另一端有外螺纹，可固定信号发射天线；信号发射管前端设有外螺纹，可旋紧到发射丝扣的内螺纹中；织物阻挡管由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为10cm-50cm，外直径为5cm-60cm；织物阻挡管为中空，内有阻挡环，环宽为0.3cm-5cm；发射丝扣由纯金属制作，壁厚0.2cm-5cm，长度为5cm-50cm，两侧均有内螺纹。The signal transmitting tube is made of extremely smooth pure metal inside, with a wall thickness of 0.2-5cm, a length of 10cm-50cm, and a diameter of 5cm-60cm; there is an internal thread hole in the center of the bottom surface of the signal transmitting tube, and the diameter of the internal thread hole is the same as the signal transmitting antenna fixing rod Matching; the signal transmitting antenna fixing rod is made of hard plastic or polymer material, with a diameter of 0.5cm-5cm, and the length does not exceed 1/3 of the length of the transmitting tube; one end of the signal transmitting antenna fixing rod can be inserted into the inner threaded hole of the base and rotated internally Tight, and fixed with a nut, the other end has an external thread, which can fix the signal transmitting antenna; the front end of the signal transmitting tube has an external thread, which can be screwed into the internal thread of the transmitting thread; the fabric blocking tube is made of extremely smooth pure metal inside Made, the wall thickness is 0.2cm-5cm, the length is 10cm-50cm, and the outer diameter is 5cm-60cm; the fabric blocking tube is hollow, with a blocking ring inside, and the ring width is 0.3cm-5cm; the launch thread is made of pure metal, and the wall The thickness is 0.2cm-5cm, the length is 5cm-50cm, and there are internal threads on both sides.
信号接收管由内部极为光滑的纯金属制作，壁厚0.2-5cm，长度为10cm-50cm，直径为5cm-60cm；信号接收管底面中心有内螺纹孔，用螺帽将信号接收器固定杆旋紧固定在该孔中，信号接收器固定杆另一端有螺纹，可固定信号接收器；信号接收器固定杆为硬质塑料或高分子材料制作，直径为0.5cm-5cm，长度不超过接收管长度的1/3；信号接收管前端设有外螺纹，可旋紧到接收丝扣的内螺纹中；织物夹持管为中空，由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为10cm-100cm，外直径为5cm-60cm；接收丝扣由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为5cm-50cm，两侧均有内螺纹。The signal receiving tube is made of extremely smooth pure metal inside, with a wall thickness of 0.2-5cm, a length of 10cm-50cm, and a diameter of 5cm-60cm; there is an internal threaded hole in the center of the bottom surface of the signal receiving tube, and the signal receiver fixing rod is screwed with a nut. Tightly fixed in the hole, the other end of the signal receiver fixing rod is threaded, which can fix the signal receiver; the signal receiver fixing rod is made of hard plastic or polymer material, with a diameter of 0.5cm-5cm, and the length does not exceed the receiving tube 1/3 of the length; the front end of the signal receiving tube is provided with an external thread, which can be screwed into the internal thread of the receiving thread; the fabric clamping tube is hollow and made of extremely smooth pure metal inside, with a wall thickness of 0.2cm-5cm. The length is 10cm-100cm, the outer diameter is 5cm-60cm; the receiving thread is made of extremely smooth pure metal inside, the wall thickness is 0.2cm-5cm, the length is 5cm-50cm, and there are internal threads on both sides.
壁厚环内针孔的数量不少于4个，直径小于0.2cm；织物固定环材质为塑料或高分子材料，尺寸与壁厚相匹配；织物固定环上的细针与固定环为整体结构，材质相同，其位置和长度与壁厚环上的针孔相匹配。The number of pinholes in the wall thickness ring is not less than 4, and the diameter is less than 0.2cm; the material of the fabric fixing ring is plastic or polymer material, and the size matches the wall thickness; the fine needles on the fabric fixing ring and the fixing ring are an integral structure, The material is the same and its position and length match the pinholes on the wall thickness ring.
所述的发射丝扣和接收丝扣均可以通过连接加长丝扣进行延长长度，所述加长丝扣由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为5cm-50cm，一端为外螺纹，另一端为内螺纹。Both the transmitting thread and the receiving thread can be extended in length by connecting the lengthening thread. The lengthening thread is made of extremely smooth pure metal inside, with a wall thickness of 0.2cm-5cm and a length of 5cm-50cm. One end is External thread, the other end is internal thread.
测试方法如下：根据实验要求选择信号发射天线安装在信号发射天线固定杆上，并通过导线与管外的发射器相连；选择合适的信号接收器，将其安装在信号接收器固定杆上，并通过导线与管外的频谱分析仪相连；用发射丝扣将信号发射管及织物阻挡管紧密相连；用接收丝扣将信号接收管及织物夹持管紧密相连；选择待测试的电磁屏蔽织物，制作成与织物固定环外径大小一致的样布；将织物固定环与织物对齐并用其上的细针穿透织物，进而插入到织物夹持管的壁厚环中的针孔内；用手柄旋转织物夹持管将其与织物阻挡管连接，并使织物固定环与织物阻挡环相遇并压紧，以固定织物样布并密封管道；选择发射频率发射信号，通过信号接收器相连的频谱分析仪的数据计算织物屏蔽效能。The test method is as follows: according to the experimental requirements, select the signal transmitting antenna and install it on the signal transmitting antenna fixing pole, and connect it to the transmitter outside the tube through a wire; select a suitable signal receiver, install it on the signal receiver fixing pole, and Connect with the spectrum analyzer outside the tube through wires; closely connect the signal transmitting tube and the fabric blocking tube with the transmitting thread; closely connect the signal receiving tube and the fabric clamping tube with the receiving thread; select the electromagnetic shielding fabric to be tested, Make a sample cloth that is the same size as the outer diameter of the fabric fixing ring; align the fabric fixing ring with the fabric and use the fine needle on it to penetrate the fabric, and then insert it into the pinhole in the wall thickness ring of the fabric clamping tube; use the handle Rotate the fabric clamping tube to connect it with the fabric blocking tube, and make the fabric fixing ring and the fabric blocking ring meet and press tightly to fix the fabric sample and seal the pipe; select the transmission frequency to transmit the signal, and analyze the frequency spectrum connected to the signal receiver The data of the instrument is used to calculate the shielding effectiveness of the fabric.
必要时，可采用加长丝扣增加发射丝扣的长度和/或采用加长丝扣增加接收丝扣的长度以灵活调整信号发射距离及信号接收距离。When necessary, the length of the transmitting thread and/or the length of the receiving thread can be increased by using the extended thread to flexibly adjust the signal transmitting distance and the signal receiving distance.
本发明中的测试操作简单、快捷、灵活，可测试电磁屏蔽织物的屏蔽效能。测试结果准确可靠，可较好的评估电磁屏蔽织物的屏蔽性能。所发明的分段管式测量方法，即能有效握持织物，又能任意变换长度，又能充分保证测量管的密闭性。信号发射天线及信号接收器可任意选择，增加了测试的广泛性。因此，本发明性能优良、测试结果较为准确，符合屏蔽效能测试的要求标准，为开发、评价及检测电磁屏蔽织物提供参考。另外，本发明所需设备投入小，具有低成本特点。所采用的方法操作简单方便，适合对电磁屏蔽织物的多次反复测试评价试验。可弥补电磁屏蔽织物屏蔽效能测试领域的空白，为电磁屏蔽织物的评价、开发及研究提供基础，加快电磁屏蔽织物的发展步伐。The test operation in the present invention is simple, quick and flexible, and can test the shielding effectiveness of the electromagnetic shielding fabric. The test results are accurate and reliable, and can better evaluate the shielding performance of electromagnetic shielding fabrics. The invented segmented tube measurement method can not only effectively hold the fabric, but also can change the length arbitrarily, and can fully ensure the airtightness of the measuring tube. The signal transmitting antenna and signal receiver can be selected arbitrarily, which increases the extensiveness of the test. Therefore, the invention has excellent performance, relatively accurate test results, meets the requirements and standards of shielding effectiveness testing, and provides references for developing, evaluating and testing electromagnetic shielding fabrics. In addition, the invention requires less investment in equipment and has the characteristics of low cost. The method adopted is simple and convenient to operate, and is suitable for repeated testing and evaluation tests on electromagnetic shielding fabrics. It can make up for the gap in the field of electromagnetic shielding fabric shielding effectiveness testing, provide a basis for the evaluation, development and research of electromagnetic shielding fabrics, and accelerate the development of electromagnetic shielding fabrics.
附图说明Description of drawings
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
图2为本发明信号发射管底面的结构示意图。Fig. 2 is a structural schematic diagram of the bottom surface of the signal transmitting tube of the present invention.
图3为本发明信号接收管底面的结构示意图。Fig. 3 is a structural schematic diagram of the bottom surface of the signal receiving tube of the present invention.
图4为本发明壁厚环的结构示意图。Fig. 4 is a schematic structural view of the wall thickness ring of the present invention.
图5为本发明织物固定环的结构示意图。Fig. 5 is a structural schematic diagram of the fabric fixing ring of the present invention.
图6为本发明信号发射端的连接方式示意图。FIG. 6 is a schematic diagram of the connection mode of the signal transmitting end of the present invention.
图7为本发明信号接收端的连接方式示意图。Fig. 7 is a schematic diagram of the connection mode of the signal receiving end of the present invention.
具体实施方式Detailed ways
如图1~7所示，一种电磁屏蔽织物屏蔽效能的分段管式测量装置，主要由信号发射端部分和信号接收端部分组成，信号发射端和信号接收端均设有支架。信号发射端主要由信号发射管1、发射丝扣2及织物阻挡管4依次连接组成；信号接收端由信号接收管20、接收丝扣19及织物夹持管18组成。信号发射管及信号接收管前端均有外螺纹28、35，可旋紧到发射丝扣或接收丝扣中的内螺纹29、34中。As shown in Figures 1 to 7, a segmented tube-type measurement device for the shielding effectiveness of electromagnetic shielding fabrics is mainly composed of a signal transmitting end and a signal receiving end. Both the signal transmitting end and the signal receiving end are equipped with brackets. The signal transmitting end is mainly composed of a signal transmitting tube 1, a transmitting thread 2 and a fabric blocking tube 4; the signal receiving end is composed of a signal receiving tube 20, a receiving thread 19 and a fabric clamping tube 18. Both the signal transmitting tube and the signal receiving tube front end have external thread 28,35, which can be screwed into the internal thread 29,34 in the transmitting threaded button or receiving threaded button.
信号发射管1与织物阻挡管4通过发射丝扣2螺纹连接，织物阻挡管4为中空8并且内设阻挡环6，织物阻挡管4靠近发射丝扣2处有外螺纹31，阻挡环靠近织物夹持管18处有内螺纹7；织物阻挡管4外侧有至少两个手柄孔3，用于安装手柄，织物阻挡管4两侧安装有支架9；信号发射管1底面中心设有内螺纹孔，用螺帽11将信号发射天线固定杆10旋紧固定在内螺纹孔中，信号发射天线固定杆10的另一端设有螺纹，用来固定信号发射天线。The signal transmitting tube 1 and the fabric blocking tube 4 are threadedly connected by the launching thread button 2. The fabric blocking tube 4 is hollow 8 and has a blocking ring 6 inside. The fabric blocking tube 4 has an external thread 31 near the launching thread button 2, and the blocking ring is close to the fabric. There are internal threads 7 at the clamping tube 18; there are at least two handle holes 3 on the outside of the fabric blocking tube 4, which are used to install handles, and brackets 9 are installed on both sides of the fabric blocking tube 4; the center of the bottom surface of the signal transmitting tube 1 is provided with internal thread holes The signal transmitting antenna fixing rod 10 is screwed and fixed in the internally threaded hole with a nut 11, and the other end of the signal transmitting antenna fixing rod 10 is provided with threads for fixing the signal transmitting antenna.
信号接收管20与织物夹持管18通过夹持管的外螺纹32与接收丝扣19的内螺纹33连接，织物夹持管18为中空14，靠近织物阻挡管处有外螺纹15，外螺纹外径比织物夹持管外径小，其尺寸差16等于阻挡管的壁厚5；内螺纹前端设有壁厚环13，其边缘宽度稍小于织物阻挡管中的阻挡环6的边缘宽度；壁厚环13内有针孔25，与壁厚环13相配合的织物固定环26上设有细针27，细针27可穿透织物插入针孔内以固定织物；织物夹持管外侧有至少两个手柄孔17，用于安装手柄以织物夹持管，织物接收丝扣两侧安装有支架24；信号接收管20底面中心也设有内螺纹孔，用螺帽22将接收器固定杆21旋紧固定在内螺纹孔中，接收器固定杆的另一端有螺纹，用来固定信号接收器。The signal receiving tube 20 and the fabric clamping tube 18 are connected with the internal thread 33 of the receiving screw 19 through the external thread 32 of the clamping tube. The fabric clamping tube 18 is hollow 14, and there is an external thread 15 near the fabric blocking tube. The outer diameter is smaller than the outer diameter of the fabric clamping tube, and its size difference 16 is equal to the wall thickness 5 of the barrier tube; the front end of the internal thread is provided with a wall thickness ring 13, and its edge width is slightly smaller than the edge width of the barrier ring 6 in the fabric barrier tube; There are pinholes 25 in the wall thickness ring 13, and the fabric fixing ring 26 matched with the wall thickness ring 13 is provided with fine needles 27, which can penetrate the fabric and insert into the pinholes to fix the fabric; the outside of the fabric clamping tube has At least two handle holes 17 are used to install the handle to hold the pipe with fabric. Supports 24 are installed on both sides of the fabric receiving thread; 21. Tighten and fix in the internally threaded hole, and the other end of the receiver fixing rod is threaded for fixing the signal receiver.
信号发射管由内部极为光滑的纯金属制作，壁厚0.2-5cm，长度为10cm-50cm，直径为5cm-60cm；信号发射管底面中心有内螺纹孔，内螺纹孔直径与信号发射天线固定杆匹配；信号发射天线固定杆为硬质塑料或高分子材料制作，直径为0.5cm-5cm，长度不超过发射管长度的1/3；信号发射天线固定杆一端可插入螺纹孔内旋紧，并用螺帽固定，通过从内螺纹孔中引出的导线12与外部设备连接。另一端有外螺纹，可固定信号发射天线；信号发射管前端设有外螺纹，可旋紧到发射丝扣的内螺纹中；织物阻挡管由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为10cm-50cm，外直径为5cm-60cm；织物阻挡管为中空，内有阻挡环，环宽为0.3cm-5cm；发射丝扣由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为5cm-50cm，两侧均有内螺纹29、30，分别与信号发射管的外螺纹28及织物阻挡管的外螺纹31旋紧相连。The signal transmitting tube is made of extremely smooth pure metal inside, with a wall thickness of 0.2-5cm, a length of 10cm-50cm, and a diameter of 5cm-60cm; there is an internal thread hole in the center of the bottom surface of the signal transmitting tube, and the diameter of the internal thread hole is the same as the signal transmitting antenna fixing rod Matching; the signal transmitting antenna fixing rod is made of hard plastic or polymer material, with a diameter of 0.5cm-5cm, and the length does not exceed 1/3 of the length of the transmitting tube; one end of the signal transmitting antenna fixing rod can be inserted into the threaded hole and tightened, and used The nut is fixed, and is connected with the external equipment through the wire 12 drawn out from the internally threaded hole. The other end has an external thread, which can fix the signal transmitting antenna; the front end of the signal transmitting tube has an external thread, which can be screwed into the internal thread of the transmitting thread; the fabric blocking tube is made of extremely smooth pure metal inside, with a wall thickness of 0.2cm- 5cm, the length is 10cm-50cm, the outer diameter is 5cm-60cm; the fabric barrier tube is hollow, with a barrier ring inside, and the ring width is 0.3cm-5cm; the launch thread is made of extremely smooth pure metal inside, with a wall thickness of 0.2cm -5cm, the length is 5cm-50cm, both sides all have internal thread 29,30, are connected with the external thread 28 of signal transmitting tube and the external thread 31 of fabric blocking tube respectively.
信号接收管由内部极为光滑的纯金属制作，壁厚0.2-5cm，长度为10cm-50cm，直径为5cm-60cm；信号接收管底面中心有内螺纹孔，用螺帽将信号接收器固定杆旋紧固定在该孔中，通过从内螺纹孔中引出的导线23使信号接受器与外部设备相连。信号接收器固定杆另一端有螺纹，可固定信号接收器；信号接收器固定杆为硬质塑料或高分子材料制作，直径为0.5cm-5cm，长度不超过接收管长度的1/3；信号接收管前端设有外螺纹35，可旋紧到接收丝扣的内螺纹34中；织物夹持管为中空，由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为10cm-100cm，外直径为5cm-60cm；接收丝扣由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为5cm-50cm，两侧均有内螺纹33、34。The signal receiving tube is made of extremely smooth pure metal inside, with a wall thickness of 0.2-5cm, a length of 10cm-50cm, and a diameter of 5cm-60cm; there is an internal threaded hole in the center of the bottom surface of the signal receiving tube, and the signal receiver fixing rod is screwed with a nut. It is tightly fixed in the hole, and the signal receiver is connected with the external equipment through the wire 23 drawn out from the inner threaded hole. The other end of the signal receiver fixing rod is threaded to fix the signal receiver; the signal receiver fixing rod is made of hard plastic or polymer material, with a diameter of 0.5cm-5cm and a length not exceeding 1/3 of the length of the receiving tube; The front end of the receiving tube is provided with an external thread 35, which can be screwed into the internal thread 34 of the receiving thread; the fabric clamping tube is hollow and made of extremely smooth pure metal, with a wall thickness of 0.2cm-5cm and a length of 10cm-100cm , the outer diameter is 5cm-60cm; the receiving thread is made of extremely smooth pure metal inside, the wall thickness is 0.2cm-5cm, the length is 5cm-50cm, and there are internal threads 33 and 34 on both sides.
壁厚环内针孔的数量不少于4个，直径小于0.2cm；织物固定环材质为塑料或高分子材料，尺寸与壁厚相匹配；织物固定环上的细针与针孔相匹配。The number of pinholes in the wall thickness ring is not less than 4, and the diameter is less than 0.2cm; the material of the fabric fixing ring is plastic or polymer material, and the size matches the wall thickness; the fine needles on the fabric fixing ring match the pinholes.
所述的发射丝扣2和接收丝扣19均可以通过连接加长丝扣进行延长长度，所述加长丝扣由内部极为光滑的纯金属制作，壁厚0.2cm-5cm，长度为5cm-50cm，一端为外螺纹，另一端为内螺纹。Both the transmitting threaded button 2 and the receiving threaded button 19 can be extended in length by connecting the extended threaded button. The extended threaded button is made of extremely smooth pure metal inside, with a wall thickness of 0.2cm-5cm and a length of 5cm-50cm. One end is externally threaded and the other end is internally threaded.
测试方法如下：根据实验要求选择信号发射天线安装在信号发射天线固定杆上，并通过导线与管外的发射器相连；选择合适的信号接收器，将其安装在信号接收器固定杆上，并通过导线与管外的频谱分析仪相连；用发射丝扣将信号发射管及织物阻挡管紧密相连；用接收丝扣将信号接收管及织物夹持管紧密相连；选择待测试的电磁屏蔽织物，制作成与织物固定环外径大小一致的样布；将织物固定环与织物对齐并用其上的细针穿透织物，进而插入到织物夹持管的壁厚环中的针孔内；用手柄旋转织物夹持管将其与织物阻挡管连接，并使织物固定环与织物阻挡环相遇并压紧，以固定织物样布并密封管道；选择发射频率发射信号，通过信号接收器相连的频谱分析仪的数据计算织物屏蔽效能。The test method is as follows: according to the experimental requirements, select the signal transmitting antenna and install it on the signal transmitting antenna fixing pole, and connect it to the transmitter outside the tube through a wire; select a suitable signal receiver, install it on the signal receiver fixing pole, and Connect with the spectrum analyzer outside the tube through wires; closely connect the signal transmitting tube and the fabric blocking tube with the transmitting thread; closely connect the signal receiving tube and the fabric clamping tube with the receiving thread; select the electromagnetic shielding fabric to be tested, Make a sample cloth that is the same size as the outer diameter of the fabric fixing ring; align the fabric fixing ring with the fabric and use the fine needle on it to penetrate the fabric, and then insert it into the pinhole in the wall thickness ring of the fabric clamping tube; use the handle Rotate the fabric clamping tube to connect it with the fabric blocking tube, and make the fabric fixing ring and the fabric blocking ring meet and press tightly to fix the fabric sample and seal the pipe; select the transmission frequency to transmit the signal, and analyze the frequency spectrum connected to the signal receiver The data of the instrument is used to calculate the shielding effectiveness of the fabric.
必要时，可采用加长丝扣增加发射丝扣的长度和/或采用加长丝扣增加接收丝扣的长度以灵活调整信号发射距离及信号接收距离。When necessary, the length of the transmitting thread and/or the length of the receiving thread can be increased by using the extended thread to flexibly adjust the signal transmitting distance and the signal receiving distance.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432323.9ACN102981065B (en) | 2012-11-02 | 2012-11-02 | Sectioned tubular measurement device and test method for shielding effectiveness of electromagnetic shielding fabric |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432323.9ACN102981065B (en) | 2012-11-02 | 2012-11-02 | Sectioned tubular measurement device and test method for shielding effectiveness of electromagnetic shielding fabric |
| Publication Number | Publication Date |
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| CN102981065A CN102981065A (en) | 2013-03-20 |
| CN102981065Btrue CN102981065B (en) | 2014-12-10 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201210432323.9AExpired - Fee RelatedCN102981065B (en) | 2012-11-02 | 2012-11-02 | Sectioned tubular measurement device and test method for shielding effectiveness of electromagnetic shielding fabric |
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