Signal detection device and method of testing the same

Abstract

The application provides a signal detection device and a test method thereof. The signal detection device comprises a transmitting antenna, a receiving antenna, an antenna positioning mechanism and a network analyzer. The antenna positioning mechanism is connected to the transmitting antenna and the receiving antenna, and is used to set the transmitting antenna and the receiving antenna on opposite sides of a to-be-tested glass and align the transmitting antenna and the receiving antenna. The network analyzer is electrically connected to the transmitting antenna and the receiving antenna. The transmitting port of the network analyzer is connected to the transmitting antenna to output a transmitting signal. The receiving port of the network analyzer is connected to the receiving antenna to measure a signal received through the to-be-tested glass. The network analyzer is further used to calculate the signal loss through the to-be-tested glass and determine whether the to-be-tested glass is qualified. The signal detection device provided by the application can realize nondestructive testing of the signal loss of the antenna through the glass, improve the testing speed of the signal loss of the to-be-tested glass and reduce the testing cost.

Description

Technical Field

[0001] This application relates to the field of vehicle wireless signal detection, specifically to a signal detection device and its testing method. Background Technology

[0002] Currently, when automakers test the antenna signal reception of vehicles, they need to assemble the car windows behind the vehicle body and use specialized instruments to test the satellite reception performance. This makes the entire testing process time-consuming and slow. If the satellite reception performance is found to be substandard, the car windows need to be disassembled and replaced, significantly increasing testing costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a signal detection device that can detect satellite reception effect before automotive glass is installed, with high detection efficiency and low cost.

[0004] Another objective of this invention is to provide a testing method for a signal detection device.

[0005] The technical solution adopted in this invention is: a signal detection device for detecting glass under test, comprising a transmitting antenna, a receiving antenna, an antenna positioning mechanism, and a network analyzer, wherein:

[0006] The transmitting antenna and the receiving antenna are disposed on opposite sides of the glass under test;

[0007] The antenna positioning mechanism connects the transmitting antenna and the receiving antenna, and is used to position the transmitting antenna and the receiving antenna on opposite sides of the glass to be tested, so that the transmitting antenna and the receiving antenna are aligned.

[0008] The network analyzer is electrically connected to the transmitting antenna and the receiving antenna respectively. When the transmitting antenna and the receiving antenna are aligned, the transmitting port of the network analyzer is connected to the transmitting antenna to output a transmitting signal, and the receiving port of the network analyzer is connected to the receiving antenna to measure the signal it receives passing through the glass under test.

[0009] The network analyzer is also used to calculate the signal loss through the glass under test and to determine whether the glass under test is qualified.

[0010] The antenna positioning mechanism includes:

[0011] A first lifting assembly is used to connect to the transmitting antenna and drive the transmitting antenna to move in a first direction, so that the transmitting antenna is located on one side of the glass to be tested, wherein the first direction is a direction perpendicular to the surface of the glass to be tested;

[0012] The second lifting assembly is used to connect to the receiving antenna and drive the receiving antenna to move in the first direction so that the receiving antenna is located on the other side of the glass to be tested;

[0013] The first lifting component and the second lifting component of the antenna positioning mechanism align the center of the transmitting antenna with the center of the receiving antenna.

[0014] The signal detection device further includes a glass fixing mechanism for carrying and fixing the glass to be tested. The first lifting component and the second lifting component of the antenna positioning mechanism are both connected to the glass fixing mechanism. The glass fixing mechanism is also used to carry the transmitting antenna, the receiving antenna, and the first lifting component and the second lifting component of the antenna positioning mechanism.

[0015] The signal detection device further includes a transmission mechanism for transmitting the glass under test, and the glass fixing mechanism is used to receive the glass under test transmitted by the transmission mechanism.

[0016] The glass fixing mechanism includes:

[0017] A mounting base body, which is used to support and fix the glass to be tested;

[0018] A base plate is provided for supporting the base body and the antenna positioning mechanism, and the antenna positioning mechanism is fixedly connected to the base plate.

[0019] A fixed bracket is fixed to the lower surface of the base plate of the fixed seat.

[0020] Both the first lifting assembly and the second lifting assembly include a connecting plate, a first limiting block, a guide column, a lifting block, a mounting plate, a lifting column, and a first handle.

[0021] A connecting plate, which is arranged along a first direction and connected to the base plate of the fixed seat;

[0022] The first limiting block is provided at both ends of the connecting plate along the first direction;

[0023] A guide post, wherein the guide post is arranged along a first direction and its two ends are respectively connected to the first limiting block;

[0024] A lifting block, which is sleeved on the guide post;

[0025] The mounting plate is arranged perpendicular to the first direction and one end of it is connected to the transmitting antenna or the receiving antenna, and the other end of the mounting plate is connected to the lifting block;

[0026] A lifting column is provided along a first direction, with one end rotatably connected to the lifting block, and the other end of the lifting column passes through the first limiting block and is fixedly connected to the first handle.

[0027] The first lifting assembly and the second lifting assembly also include fasteners, which are fixedly connected to the lifting block, and a second handle is provided at the end of the fastener away from the lifting block.

[0028] The antenna positioning mechanism further includes a first guide component that moves along a second direction. The first guide component includes a first slide rail disposed on the base plate of the fixed seat and extending along the second direction, and a first slider that is slidably connected to the first slide rail. The connecting plate is connected to the first slider.

[0029] The first guiding component further includes:

[0030] The second limiting block is located at both ends of the first slide rail and is used to limit the movement of the first slider.

[0031] The antenna positioning mechanism further includes a second guide component that moves along a first direction. The second guide component includes a second slide rail extending along the first direction and a second slider that is slidably connected to the second slide rail. The connecting plate is disposed on the second slider, and the second slide rail is connected to the first slider.

[0032] The fixed base plate is inclined, the fixed base body is perpendicular to the fixed base plate, the fixed base body includes a limiting post perpendicular to the fixed base plate, the limiting post abuts against the side of the glass to be tested, the first lifting assembly and the second lifting assembly are both perpendicular to the fixed base plate, and the first guide assembly is perpendicular to the first lifting assembly and the second lifting assembly.

[0033] Wherein, the first lifting component and the second lifting component are used to control the distance d between the receiving antenna and the transmitting antenna to satisfy: 1.0mm≤d≤100mm.

[0034] The signal detection device further includes:

[0035] A matrix switch, one end of which is electrically connected to the network analyzer and the other end of which is electrically connected to the transmitting antenna, is used to automatically switch the frequency of the transmitted signal.

[0036] The signal detection device further includes:

[0037] A first adapter, electrically connected to the matrix switch; and

[0038] The second adapter is electrically connected to the transmitting antenna and the receiving antenna, and the second adapter is detachably electrically connected to the first adapter.

[0039] The signal detection device further includes:

[0040] A display, electrically connected to the network analyzer, is used to display detection information, wherein the detection information includes the signal loss of the glass under test at different frequencies.

[0041] The signal detection device further includes:

[0042] The memory is used to store preset standards;

[0043] The processor is electrically connected to the memory and reads the preset standard. When the processor determines that the loss of the glass under test is greater than the preset standard, it transmits a first display instruction to the display. The display displays first information according to the first display instruction, and the first information is used to indicate that the glass under test is unqualified. When the processor determines that the loss of the glass under test is less than or equal to the preset standard, it transmits a second display instruction to the display. The display displays second information according to the second display instruction, and the second information is used to indicate that the glass under test is qualified.

[0044] The testing method for the aforementioned signal detection equipment includes the following steps:

[0045] (1) Turn on the network analyzer;

[0046] (2) Before the measurement begins, calibrate the network analyzer by connecting the network analyzer port to the cable and calibrating it with a network analyzer calibration kit for dual-port calibration.

[0047] (3) Connect the transmitting antenna and receiving antenna to the network analyzer with cables respectively, and calibrate the entire system to zero without placing the glass under test;

[0048] (4) Place the glass to be tested into the glass fixing mechanism. The transmitting antenna and the receiving antenna are set on the opposite sides of the glass to be tested through the antenna positioning mechanism. The electromagnetic wave signal is emitted from the transmitting port of the network analyzer and transmitted to the glass to be tested through the cable and the transmitting antenna. After the electromagnetic wave penetrates the glass to be tested, it returns to the receiving port of the network analyzer through the receiving antenna and the cable. The difference between the received and transmitted electromagnetic wave signals is calculated, that is, the signal loss of the glass to be tested is measured, and the quality of the glass to be tested is determined.

[0049] In step (1), the frequency range of the network analyzer must be at least 300MHz-8.5GHz.

[0050] Compared with the prior art, the above-mentioned technical solution of this application has the following beneficial technical effects:

[0051] I. This application provides a signal detection device, which includes a transmitting antenna, a receiving antenna, an antenna positioning mechanism, and a network analyzer. The antenna positioning mechanism connects the transmitting antenna and the receiving antenna, and positions the transmitting antenna and the receiving antenna on opposite sides of the glass under test, aligning them. The network analyzer is electrically connected to both the transmitting antenna and the receiving antenna. When the transmitting antenna and the receiving antenna are aligned, the transmitting port of the network analyzer is connected to the transmitting antenna to output a transmitted signal, and the receiving port of the network analyzer is connected to the receiving antenna to measure the signal received through the glass under test. The network analyzer is also used to calculate the signal loss through the glass under test and determine whether the glass under test is qualified. This application's embodiment performs satellite signal loss detection on the glass under test before it is installed on a vehicle, making the detection method more convenient. Unqualified glass under test can be directly discarded without disassembling the vehicle, improving detection speed and reducing detection costs. Therefore, the signal detection device provided by this application can improve the speed of signal loss detection for glass under test and reduce detection costs.

[0052] II. The signal detection device described in this application further includes a glass fixing mechanism for supporting and fixing the glass under test and a transmission mechanism for transmitting the glass under test. The glass fixing mechanism is used to receive the glass under test transmitted by the transmission mechanism. The first lifting component and the second lifting component of the antenna positioning mechanism are both connected to the glass fixing mechanism. In other words, this application provides an online signal detection device for automotive glass, which adds signal detection functionality to an existing automotive glass fixing mechanism without changing the operator's original automotive glass inspection process, saving a set of dedicated positioning fixtures and avoiding the need for additional workstations and personnel. Therefore, the signal detection device provided in this application can improve the speed of signal loss detection of the glass under test and reduce detection costs. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0054] Figure 1 A schematic diagram of the structure of the signal detection device provided in the embodiments of this application.

[0055] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0056] Figure 3 for Figure 1 A schematic diagram of the antenna positioning mechanism.

[0057] Figure 4 This is a schematic diagram of the electrical connections of the signal detection device provided in an embodiment of this application.

[0058] Icon labels:

[0059] Signal detection equipment 1;

[0060] Network Analyzer 10;

[0061] Antenna positioning mechanism 11; First lifting assembly 12; Second lifting assembly 13; Connecting plate 14; First limiting block 15; Guide post 16; Lifting block 17; Mounting plate 18; Lifting column 19; First handle 20; First guide assembly 21; First slide rail 211; First slider 212; Second limiting block 213; Second guide assembly 22; Second slide rail 221; Second slider 222; Second handle 23; Base plate 24; L-shaped connecting plate 25;

[0062] Cable 26;

[0063] Glass fixing mechanism 27; fixing base body 271; limiting post 2711; fixing base base plate 272; fixing bracket 273;

[0064] Transmission mechanism 28;

[0065] Matrix switch 29; First adapter 30; Second adapter 31; Display 32;

[0066] Glass to be tested: 210;

[0067] Transmitting antenna 220;

[0068] Receiving antenna 230. Detailed Implementation

[0069] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0070] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0071] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0072] This application provides a signal detection device 1. Please refer to... Figure 1 and Figure 2 , Figure 1 The signal detection device provided in one embodiment of this application; Figure 2 for Figure 1 A magnified schematic diagram of a portion at point A. In this embodiment, the signal detection device 1 is used to detect the glass under test 210. The signal detection device 1 includes a transmitting antenna 220, a receiving antenna 230, an antenna positioning mechanism 11, and a network analyzer 10. The transmitting antenna 220 and the receiving antenna 230 are disposed on opposite sides of the glass under test 210. The antenna positioning mechanism 11 connects the transmitting antenna 220 and the receiving antenna 230, and is used to position the transmitting antenna 220 and the receiving antenna 230 on opposite sides of the glass under test 210, aligning the transmitting antenna 220 and the receiving antenna 230. The network analyzer 10 is electrically connected to the transmitting antenna 220 and the receiving antenna 230 respectively. When the transmitting antenna 220 and the receiving antenna 230 are aligned, the transmitting port of the network analyzer 10 is connected to the transmitting antenna 220 to output a transmitted signal, and the receiving port of the network analyzer 10 is connected to the receiving antenna 230 to measure the signal received by the network analyzer 10 passing through the glass under test 210. The network analyzer 10 is also used to calculate the signal loss through the glass under test 210 and to determine whether the glass under test 210 is qualified.

[0073] In this embodiment, the signal detection device 1 is used to detect the satellite signal reception effect of the glass under test 210, i.e., the satellite reception effect of the glass under test 210. Specifically, the signal detection device 1 is used to detect the signal loss of the glass under test 210 for GPS, GNNS, 4G, or 5G signals. Specifically, the glass under test 210 is automotive coated glass. For example, the glass under test 210 can be, but is not limited to, sunroof glass, windshield, and rear windshield. Typically, automotive coated glass has multiple layers of coating, which can interfere with satellite signals, resulting in excessive loss of satellite signals received by the receiving antenna 230 installed in the vehicle. Therefore, it is necessary to remove the coating from a portion of the automotive coated glass to reduce the loss of satellite signals transmitted through the coated glass to the receiving antenna 230. Therefore, a satellite signal loss test is required after removing the coating from the glass under test 210.

[0074] In this embodiment, the network analyzer 10 is a vector network analyzer used to provide electromagnetic excitation signals, received signals, and analysis signals. Specifically, the network analyzer 10 is electrically connected to the transmitting antenna 220 via cable 26, and the network analyzer 10 is also electrically connected to the receiving antenna 230 via cable 26. The frequency range of the network analyzer 10 includes at least 300MHz-8.5GHz.

[0075] In related technologies, when testing the antenna reception signal of a car, the test glass 210 and receiving antenna 230 are directly installed on the vehicle for satellite reception effect testing, making the entire testing process time-consuming and slow. If the satellite reception effect is found to be unqualified, the test glass 210 needs to be disassembled and replaced, which greatly increases the testing cost.

[0076] Compared to related technologies, in this embodiment, satellite reception performance is tested before the glass under test 210 and the receiving antenna 230 are installed on the vehicle. This is achieved by placing the transmitting antenna 220 and the receiving antenna 230 on opposite sides of the glass under test 210. The transmitting antenna 220 simulates satellite signal transmission, and the receiving antenna 230 receives the signal, thus testing the signal loss of the glass under test 210. During the testing of the glass under test 210 by the signal detection device 1, only the glass under test 210 needs to be replaced, reducing time consumption and increasing testing speed. Furthermore, glass under test 210 that passes the test can be directly installed on the vehicle, while glass under test 210 that fails the test can be directly discarded or remanufactured without needing to be replaced after installation, reducing testing costs.

[0077] Please refer to Figure 2 and Figure 3 , Figure 3 for Figure 1 A schematic diagram of the antenna positioning mechanism is shown. In this embodiment, the antenna positioning mechanism 11 includes a first lifting assembly 12 and a second lifting assembly 13. The first lifting assembly 12 is used to connect the transmitting antenna 220 and drive the transmitting antenna 220 to move in a first direction, so that the transmitting antenna 220 is located on one side of the glass 210 to be tested, wherein the first direction is perpendicular to the surface of the glass 210 to be tested. Figures 1 to 3 As shown, the first direction is the Z-axis direction in the figure. The second lifting assembly 13 is used to connect the receiving antenna 230 and drive the receiving antenna 230 to move in the first direction, so that the receiving antenna 230 is located on the other side of the glass 210 to be tested. The first lifting assembly 12 and the second lifting assembly 13 of the antenna positioning mechanism 11 align the center of the transmitting antenna 220 with the center of the receiving antenna 230.

[0078] Please refer to Figure 2 and Figure 3 In this embodiment, both the transmitting antenna 220 and the receiving antenna 230 are 1000MHz-6500MHz wideband horn antennas, covering the operating frequencies of GPS, GNSS, 4G, 5G, ETC, and RFID. The horn-shaped transmitting antenna 220 and the horn-shaped receiving antenna 230 are arranged face-to-face. The line connecting the two horn antennas is perpendicular to the surface of the glass under test 210. Preferably, the center of the transmitting antenna 220 is aligned with the center of the receiving antenna 230. Aligning the centers of the transmitting antenna 220 and the receiving antenna 230 reduces the error in signal loss detection of the glass under test 210 by the signal detection device 1.

[0079] Please refer to this again. Figure 1 In this embodiment, the signal detection device 1 further includes a transmission mechanism 28 and a glass fixing mechanism 27. The transmission mechanism 28 is used to transmit the glass under test 210. The glass fixing mechanism 27 is used to receive the glass under test 210 transmitted by the transmission mechanism 28, and to fix and support the glass under test 210. The first lifting component 12 and the second lifting component 13 of the antenna positioning mechanism 11 are both connected to the glass fixing mechanism 27. The glass fixing mechanism 27 is also used to support the transmitting antenna 220, the receiving antenna 230, and the first lifting component 12 and the second lifting component 13 of the antenna positioning mechanism 11. It should be noted that... Figure 1 The diagram only shows a portion of the structure of the transmission mechanism 28 and a portion of the structure of the glass fixing mechanism 27.

[0080] In this embodiment, the transmission mechanism 28 is used to transmit the glass 210 to be tested. After the glass 210 is transmitted to the glass fixing mechanism 27, the transmitting antenna 220 and the receiving antenna 230 can be installed on the signal detection device 1 to detect the signal loss of the glass 210 on the glass fixing mechanism 27.

[0081] In this embodiment, the existing glass assembly transport line and glass fixing mechanism 27 are reused. The first lifting component 12 and the second lifting component 13 are installed on the glass fixing mechanism 27 and electrically connected to the network analyzer 10. This allows the signal detection device 1 to be applied to the existing glass assembly production line, enabling signal loss detection of the glass 210 under test. This improves the detection efficiency of the glass 210 under test and reduces production and testing costs. Furthermore, reusing the existing glass assembly transport line and glass fixing mechanism 27, and installing the first lifting component 12 and the second lifting component 13 on the glass fixing mechanism 27 and electrically connecting it to the network analyzer 10, also saves the need for a dedicated high-precision positioning fixture and avoids adding a workstation, personnel, and extending the production cycle time to achieve the detection process. In other words, signal detection functionality is added to the existing glass fixture without changing the operator's original detection process, thereby reducing costs and improving detection efficiency.

[0082] Please refer to this again. Figure 1 In this embodiment, the glass fixing mechanism 27 includes a fixing base body 271, a fixing base plate 272, and a fixing bracket 273. In this embodiment, the fixing base body 271 is used to support and fix the glass 210 to be tested. The fixing base plate 272 is supported by the fixing base body 271 and the antenna positioning mechanism 11. The fixing bracket 273 is fixed to the lower surface of the fixing base plate 272.

[0083] In this embodiment, the fixing bracket 273 is fixedly connected to the fixing base plate 272. Specifically, the fixing base plate 272 and the fixing bracket 273 are connected by fixing holes and pins. The fixing holes of the fixing base plate 272 and the fixing bracket 273 are CNC machined to ensure installation accuracy.

[0084] Please refer to this again. Figure 2 and Figure 3 Both the first lifting assembly 12 and the second lifting assembly 13 include a connecting plate 14, a first limiting block 15, a guide column 16, a lifting block 17, a mounting plate 18, a lifting column 19, and a first handle 20, wherein:

[0085] A connecting plate 14 is arranged along a first direction and connected to the base plate 272 of the fixed seat;

[0086] First limiting block 15, the connecting plate 14 is provided with first limiting block 15 at both ends along the first direction;

[0087] Guide post 16, the guide post 16 is arranged along the first direction and its two ends are respectively connected to the first limiting block 15;

[0088] Lifting block 17, which is sleeved on the guide post 16;

[0089] Mounting plate 18, which is arranged perpendicular to the first direction and has one end connected to the transmitting antenna 220 or the receiving antenna 230, and the other end connected to the lifting block 17.

[0090] The lifting column 19 is arranged along a first direction and one end of it is rotatably connected to the lifting block 17. The other end of the lifting column 19 passes through the first limiting block 15 and is fixedly connected to the first handle 20.

[0091] In this embodiment, for the first lifting assembly 12, by rotating the first handle 20, the lifting column 19 moves along the first direction, thereby the lifting column 23 drives the lifting block 17 to move along the first direction. Since the transmitting antenna 220 is connected to the lifting block 17 through the mounting plate 18, the transmitting antenna 220 is ultimately driven to move along the first direction.

[0092] In this embodiment, for the second lifting assembly 13, by rotating the first handle 20, the lifting column 19 moves along the first direction, thereby the lifting column 23 drives the lifting block 17 to move along the first direction. Since the receiving antenna 230 is connected to the lifting block 17 through the mounting plate 18, it ultimately drives the receiving antenna 220 to move along the first direction.

[0093] In this embodiment, the connecting plate 14 is arranged along the first direction and connected to the base plate 272 of the fixed seat. This allows the transmitting antenna 220 and the receiving antenna 230 to be located on opposite sides of the glass under test 210. In other words, the arrangement of the transmitting antenna 220 and the receiving antenna 230 ensures that the antenna centers are aligned with the glass under test 210. By adjusting the antenna placement and the distance between the antennas and the glass under test 210, the error in signal loss detection of the glass under test by the signal detection device 1 is reduced or even eliminated, ensuring the accuracy of the detection results.

[0094] In this embodiment, the setting of the first limiting block 15 can better ensure the accuracy of the arrangement of the transmitting antenna 220 and the receiving antenna 230 along the first direction.

[0095] Please refer to this again. Figure 3 The first lifting assembly 12 and the second lifting assembly 13 also include fasteners (not shown in the figure), which are fixedly connected to the lifting block 17, and a second handle 23 is provided at the end of the fastener away from the lifting block 17.

[0096] In this embodiment, after adjusting the positions of the transmitting antenna 220 and the receiving antenna 230 by rotating the first handle 20, the lifting block 17 can be fixed on the guide post 16 by using the fastener and the second handle 23, so as to prevent the lifting block 17 from moving during the signal detection process and ensure the accuracy of the detection results.

[0097] Please refer to this again. Figure 2 and Figure 3 The antenna positioning mechanism 11 further includes a first guide assembly 21 that moves along a second direction. The first guide assembly 21 includes a first slide rail 211 disposed on the base plate 272 and extending along the second direction, and a first slider 212 slidably connected to the first slide rail 211. The connecting plate 14 is connected to the first slider 212. The second direction is perpendicular to the first direction and parallel to the edge of the glass 210 to be tested. Figures 1 to 3 As shown, the second direction is the X-axis direction in the figure. Preferably, the first guide assembly 21 is connected to the fixed base plate 272 through the base plate 24, that is, the first slide rail 211 is connected to the fixed base plate 272 through the base plate 24.

[0098] In this embodiment, at least one receiving antenna is installed on the vehicle body. When two or more receiving antennas are installed on the vehicle body, in actual production, it is necessary to detect the signal transmission area on the vehicle glass corresponding to each receiving antenna. That is, the signal detection device 1 needs to be arranged with two or more sets of antennas, each set of antennas including a transmitting antenna 220 and a receiving antenna 230 aligned with the transmitting antenna. However, when performing signal detection on the decoated area of ​​the automotive coated glass, since the area of ​​the decoated area is small, it is not possible to arrange two or more sets of antennas. Only by setting the first guiding component 21 can the position of the first lifting component 12 and the second lifting component 13 in the second direction be adjusted, and the area covered by the projection of the transmitting antenna 220 and the receiving antenna 230 on the glass under test 210 be the signal transmission area of ​​the glass under test 210, so as to meet the requirement of detecting two or more receiving antennas on the vehicle body. In addition, this configuration can effectively guide the first lifting component 12 and the second lifting component 13, ensuring the accuracy of their movement, and thus ensuring the accuracy of the movement of the transmitting antenna 220 and the receiving antenna 230, resulting in structural optimization.

[0099] It should be noted that, in this embodiment, the antenna positioning mechanism 11 needs to be designed according to the actual arrangement position and number of antennas on the vehicle.

[0100] Please refer to this again. Figure 2 and Figure 3 The first guide component 21 further includes:

[0101] The second limiting block 213 is disposed at both ends of the first slide rail 211 and is used to limit the first slider 212.

[0102] In this embodiment, the above-described arrangement method can effectively ensure the accuracy of the position of the transmitting antenna 220 and the receiving antenna 230 along the second direction.

[0103] Please refer to this again. Figure 3 The antenna positioning mechanism 11 further includes a second guide assembly 22 that moves along a first direction. The second guide assembly 22 includes a second slide rail 221 extending along the first direction and a second slider 222 slidably connected to the second slide rail 221. A connecting plate 14 is disposed on the second slider 222, and the second slide rail 221 is connected to the first slider 212. Preferably, the second slide rail 221 is connected to the first slider 212 via an L-shaped connecting plate 25.

[0104] In this embodiment, by providing the second guide component 22, the positions of the first lifting component 12 and the second lifting component 13 in the first direction can be adjusted as a whole. This arrangement effectively guides the first lifting component 12 and the second lifting component 13, ensuring their movement accuracy, and consequently ensuring the movement accuracy of the transmitting antenna 220 and the receiving antenna 230, thus optimizing the structure.

[0105] Please refer to this again. Figure 1 In this embodiment, the base plate 272 is inclined, and the body 271 is perpendicular to the base plate 272. The body 271 includes a limiting post 2711 perpendicular to the base plate 272, which abuts against the side of the glass 210 to be tested. The first lifting assembly 12 and the second lifting assembly 13 are both perpendicular to the base plate 272, and the first guide assembly 21 is perpendicular to the first lifting assembly 12 and the second lifting assembly 13. By inclining the base plate 272, the limiting post 2711 abuts against the side of the glass 210 to be tested, thus clamping and positioning the glass 210. In other words, the glass fixing mechanism 27 can utilize the weight of the glass 210 and its inclined surface for positioning, resulting in a simple structure and improved positioning efficiency.

[0106] Please refer to this again. Figure 2 and Figure 3In this embodiment, the first lifting component 12 and the second lifting component 13 are used to drive the receiving antenna 230 and the transmitting antenna 220 to move in the first direction, so as to control the distance d between the receiving antenna 230 and the transmitting antenna 220 to satisfy: 1.0mm ≤ d ≤ 100mm. This is beneficial for the detection of the glass 210 under test and occupies little space. For example, d can be, but is not limited to, 1.0mm, or 10mm, or 20mm, or 30mm, or 40mm, or 50mm, or 60mm, or 70mm, or 80mm, or 90mm, or 100mm, etc. If the distance d between the transmitting antenna 220 and the receiving antenna 230 is < 1.0mm, then the thickness requirement of the glass 210 under test is high, and the thickness of the glass 210 under test needs to be less than 1.0mm to be detected, thus limiting the types of glass 210 that can be detected. If the distance d between the transmitting antenna 220 and the receiving antenna 230 is greater than 100mm, the dimensions of the first lifting component 12 and the second lifting component 13 in the first direction will be large, which will require the antenna positioning mechanism 11 to occupy a large space and will be detrimental to the alignment of the transmitting antenna 220 and the receiving antenna 230.

[0107] Refer to again Figure 4 In this embodiment, the signal detection device 1 further includes a matrix switch 29. One end of the matrix switch 29 is electrically connected to the network analyzer 10, and the other end is electrically connected to the transmitting antenna 220, for automatically switching the frequency of the electromagnetic excitation signal.

[0108] In this embodiment, the matrix switch 29 can automatically switch the frequency of the transmitted signal. Specifically, the matrix switch 29 automatically switches the frequency of the electromagnetic excitation signal through a relay, so that it is not necessary to manually switch the connection to change the frequency of the electromagnetic excitation signal after the detection of one frequency band of the receiving antenna 230 corresponding to the glass under test 210 is completed, thereby improving the speed of the signal detection device 1 in detecting the signal loss of the glass under test 210.

[0109] In this embodiment, the signal detection device 1 further includes a power switch. The power switch is electrically connected to the network analyzer 10 and is used to control the power on and off of the network analyzer 10.

[0110] In this embodiment, after the start switch is turned on, the network analyzer 10 can be controlled to start working, and the matrix switch 29 can be activated, so that the matrix switch 29 can automatically switch the detection frequency band according to the preset command. In addition, the start switch can also realize the rapid shutdown of detection.

[0111] In addition, the start switch can be designed as a foot switch for easy start and stop, or it can be integrated into the start switch of the signal detection device 1 so that the start switch can start and stop the signal detection device 1 with one button.

[0112] Please refer to this again. Figure 4 , Figure 4 This is a schematic diagram of the electrical connections of the signal detection device provided in this application. In this embodiment, the signal detection device 1 further includes a first adapter 30 and a second adapter 31. The first adapter 30 is electrically connected to the matrix switch 29. The second adapter 31 is electrically connected to the transmitting antenna 220 and the receiving antenna 230. The second adapter 31 is detachably electrically connected to the first adapter 30.

[0113] In this embodiment, there are multiple second adapters 31, each having multiple adapter sections, and the number of adapter sections in each second adapter 31 may be the same or different. One second adapter 31 is electrically connected to the transmitting antenna 220 and the receiving antenna 230 of the glass under test 210 corresponding to one product. The first adapter 30 also has multiple adapter sections, and the number of adapter sections in one first adapter 30 is greater than or equal to the number of adapter sections in one second adapter 31. The first adapter 30 is electrically connected to the network analyzer 10 via the matrix switch 29, and the first adapter 30 can switch electrical connections among the multiple second adapters 31 to quickly switch between signal loss detection for different products corresponding to the glass under test 210, improving detection speed and thus reducing detection costs.

[0114] In this embodiment, the first adapter 30 and the second adapter 31 are aviation plugs. The first adapter 30 and the second adapter 31 can be quickly plugged in and out at once, but the first adapter and the second adapter cannot be plugged in and out individually one by one.

[0115] In other embodiments, the first adapter 30 and the second adapter 31 may be, but are not limited to, conductive fasteners or conductive clips, as long as they enable the first adapter 30 to quickly connect and quickly disconnect from the second adapter 31.

[0116] Please refer to this again. Figure 1 In this embodiment, the signal detection device 1 further includes a display 32. The display 32 is electrically connected to the network analyzer 10 and is used to display detection information. The detection signal includes the signal loss of the glass under test 210 at different frequencies.

[0117] In this embodiment, the display 32 is used to display the detection information during the process of the signal detection device 1 detecting the glass under test 210, so as to make the detection information visible and improve detection efficiency.

[0118] In this embodiment, the signal detection device 1 further includes a memory and a processor. The memory stores preset standards. The processor is electrically connected to the memory and reads the preset standards. When the processor determines that the loss of the glass under test 210 is greater than the preset standard, it transmits a first display instruction to the display 32. The display 32 displays first information according to the first display instruction. The first information indicates that the glass under test 210 is unqualified. When the processor determines that the loss of the glass under test 210 is less than or equal to the preset standard, it transmits a second display instruction to the display 32. The display 32 displays second information according to the second display instruction. The second information indicates that the glass under test 210 is qualified.

[0119] In this embodiment, the processor compares the loss of the glass under test 210 obtained by the network analyzer 10 with the preset standard stored in the memory to determine whether the glass under test 210 is qualified. The processor then displays the qualification information of the glass under test 210 through the display 32, allowing the operator to proceed to the next step based solely on the displayed result. This achieves automatic detection and qualification judgment of the glass under test 210, improving detection efficiency and reducing detection costs. Furthermore, the memory is also used to store the qualification information of the glass under test 210.

[0120] To determine whether the glass under test 210 is qualified, it is necessary to analyze whether the loss of the glass under test 210 meets the preset standard. Furthermore, the receiving antenna 230 includes a main antenna and a secondary antenna, and both the main antenna and the secondary antenna have two operating frequency bands. Therefore, when performing signal detection on the glass under test 210, it is necessary to change the type of the receiving antenna 230, its installation position on the glass under test 210, and the set frequency band received by the receiving antenna 230. Therefore, for different set frequency bands, the loss of the glass under test 210 needs to meet different preset standards. For example, the preset standard may be, but is not limited to, less than 15dB, or less than 14dB, or less than 13dB, or less than 12dB, or less than 11dB, or less than 10dB, or less than 9dB, or less than 8dB, or less than 7dB, or less than 6dB, or less than 5dB, etc. It should be noted that the embodiments of this application do not limit the preset standard for the signal loss of the glass under test 210 corresponding to different set frequency bands. The preset standard has different values ​​depending on different vehicle models, different OEMs or different uses. Therefore, the preset standard needs to be calibrated according to the actual application.

[0121] Furthermore, the memory is electrically connected to the network analyzer 10 and is used to store the detection information. The detection signal includes the wear of the glass under test 210.

[0122] Furthermore, the display 32, the memory, and the processor may be, but are not limited to, an all-in-one machine or a separate machine; this embodiment does not impose any limitations on this.

[0123] In addition, please refer to Figure 1 The signal detection device 1 also includes a placement platform. The placement platform is used to place the network analyzer 10, matrix switch 29, display 32, and start switch, etc.

[0124] The following is a detailed description of the process and testing method by which the signal detection device 1 provided in this embodiment performs signal detection on the glass under test 210, as detailed below:

[0125] (1) Turn on Network Analyzer 10;

[0126] (2) Before the measurement begins, the network analyzer 10 is calibrated by connecting the port of the network analyzer 10 to the cable 26 and using the network analyzer 10 calibration kit to perform dual-port calibration.

[0127] (3) Connect the transmitting antenna 220 and the receiving antenna 230 to the network analyzer 10 with cables 26 respectively. Without placing the glass under test 210, calibrate the entire system to zero.

[0128] (4) Place the glass to be tested 210 into the glass fixing mechanism 27. The transmitting antenna 220 and the receiving antenna 230 are set on opposite sides of the glass to be tested through the antenna positioning mechanism 11. The transmitting port of the network analyzer 10 transmits electromagnetic wave signals, which are transmitted to the glass to be tested 210 via the cable 26 and the transmitting antenna 220. After the electromagnetic waves penetrate the glass to be tested 210, they return to the receiving port of the network analyzer 10 via the receiving antenna 230 and the cable 26. Calculate the difference between the received and transmitted electromagnetic wave signals, that is, measure the signal loss of the glass to be tested 210, and determine whether the glass to be tested 210 is qualified.

[0129] In step (3), the transmitting antenna 220 and the receiving antenna 230 are connected by the antenna positioning mechanism 11, and the transmitting antenna 220 and the receiving antenna 230 are aligned. In step (4), the glass to be tested 210 is installed at the preset work station, and the transmitting antenna 220 and the receiving antenna 230 are positioned on opposite sides of the glass to be tested using the antenna positioning mechanism 11, and the transmitting antenna 220 and the receiving antenna 230 are aligned. The area covered by the orthographic projection of the receiving antenna 230 onto the glass to be tested 210 is at least partially decoified. In one embodiment, the installation position of the receiving antenna 230 during testing is the actual installation position of the glass to be tested 210 after it is installed on the vehicle. In another embodiment, the installation position of the receiving antenna 230 during testing is not the actual installation position of the receiving antenna 230 after the glass under test 210 is installed in the vehicle. However, the area covered by the projection of the receiving antenna 230 on the glass under test 210 during testing is the area for satellite signal transmission after the glass under test 210 is installed in the vehicle.

[0130] When the transmitting antenna 220 and the receiving antenna 230 are aligned, the transmitting port of the network analyzer 10 is connected to the transmitting antenna 220 to output a transmitting signal, and the receiving port of the network analyzer 10 is connected to the receiving antenna 230 to measure the signal received by the network analyzer 10 through the glass under test 210. The network analyzer 10 is also used to calculate the signal loss through the glass under test 210 and to determine whether the glass under test 210 is qualified.

[0131] In summary, this application provides a signal detection device 1, which includes a transmitting antenna 220, a receiving antenna 230, an antenna positioning mechanism 11, and a network analyzer 10. The antenna positioning mechanism 11 connects the transmitting antenna 220 and the receiving antenna 230, and positions the transmitting antenna 220 and the receiving antenna 230 on opposite sides of the glass under test 210, aligning the transmitting antenna 220 and the receiving antenna 230. The network analyzer 10 is electrically connected to the transmitting antenna 220 and the receiving antenna 230 respectively. When the transmitting antenna 220 and the receiving antenna 230 are aligned, the transmitting port of the network analyzer 10 is connected to the transmitting antenna 220 to output a transmitting signal, and the receiving port of the network analyzer 10 is connected to the receiving antenna 230 to measure the signal received through the glass under test 210. The network analyzer 10 is also used to calculate the signal loss through the glass under test 210 and determine whether the glass under test 210 is qualified. This application's embodiment performs satellite signal loss testing on the glass under test 210 before it is installed on the vehicle. This testing method is more convenient, and unqualified glass under test 210 can be directly discarded without disassembling the vehicle, thus improving testing speed and reducing testing costs. Therefore, the signal testing equipment 1 provided in this application embodiment can improve the speed of signal loss testing of the glass under test 210 and reduce testing costs.

[0132] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A signal detection device, characterized in that, For detecting the glass under test, the glass under test is coated glass, and the coated glass includes a decoated area. The signal detection device detects signals in the decoated area and includes a transmitting antenna, a receiving antenna, an antenna positioning mechanism, and a network analyzer. Both the transmitting antenna and the receiving antenna are 1000MHz-6500MHz wideband horn antennas. The network analyzer is a vector network analyzer. The transmitting antenna and the receiving antenna are disposed on opposite sides of the glass under test; The antenna positioning mechanism connects the transmitting antenna and the receiving antenna, and is used to position the transmitting antenna and the receiving antenna on opposite sides of the glass to be tested, so that the transmitting antenna and the receiving antenna are aligned. The antenna positioning mechanism includes: A first lifting assembly is used to connect to the transmitting antenna and drive the transmitting antenna to move in a first direction, so that the transmitting antenna is located on one side of the glass to be tested, wherein the first direction is a direction perpendicular to the surface of the glass to be tested; The second lifting assembly is used to connect to the receiving antenna and drive the receiving antenna to move in the first direction so that the receiving antenna is located on the other side of the glass to be tested; The first lifting component and the second lifting component of the antenna positioning mechanism align the center of the transmitting antenna with the center of the receiving antenna, and control the distance d between the receiving antenna and the transmitting antenna to satisfy: 1.0mm≤d≤100mm; The network analyzer is electrically connected to the transmitting antenna and the receiving antenna respectively. When the transmitting antenna and the receiving antenna are aligned, the transmitting port of the network analyzer is connected to the transmitting antenna to output a transmitting signal, and the receiving port of the network analyzer is connected to the receiving antenna to measure the signal it receives passing through the glass under test. The network analyzer is also used to calculate the signal loss through the glass under test in order to determine whether the glass under test is qualified. The signal detection device further includes a glass fixing mechanism for carrying and fixing the glass to be tested. The first lifting component and the second lifting component of the antenna positioning mechanism are both connected to the glass fixing mechanism. The glass fixing mechanism is also used to carry the transmitting antenna, the receiving antenna, and the first lifting component and the second lifting component of the antenna positioning mechanism. The signal detection device further includes a transmission mechanism for transmitting the glass under test, and the glass fixing mechanism is used to receive the glass under test transmitted by the transmission mechanism.

2. The signal detection device as described in claim 1, characterized in that, The glass fixing mechanism includes: A mounting base body, which is used to support and fix the glass to be tested; A base plate is provided for supporting the base body and the antenna positioning mechanism, and the antenna positioning mechanism is fixedly connected to the base plate. A fixed bracket is fixed to the lower surface of the base plate of the fixed seat.

3. The signal detection device as described in claim 2, characterized in that, Both the first lifting assembly and the second lifting assembly include a connecting plate, a first limiting block, a guide column, a lifting block, a mounting plate, a lifting column, and a first handle, wherein: A connecting plate, which is arranged along a first direction and connected to the base plate of the fixed seat; The first limiting block is provided at both ends of the connecting plate along the first direction; A guide post, wherein the guide post is arranged along a first direction and its two ends are respectively connected to the first limiting block; A lifting block, which is sleeved on the guide post; The mounting plate is arranged perpendicular to the first direction and one end of it is connected to the transmitting antenna or the receiving antenna, and the other end of the mounting plate is connected to the lifting block; A lifting column is provided along a first direction, with one end rotatably connected to the lifting block, and the other end of the lifting column passes through the first limiting block and is fixedly connected to the first handle.

4. The signal detection device as described in claim 3, characterized in that, The first lifting assembly and the second lifting assembly also include fasteners, which are fixedly connected to the lifting block, and a second handle is provided at the end of the fastener away from the lifting block.

5. The signal detection device as described in claim 3, characterized in that, The antenna positioning mechanism further includes a first guide component that moves along a second direction. The first guide component includes a first slide rail disposed on the base plate of the fixed seat and extending along the second direction, and a first slider that is slidably connected to the first slide rail. The connecting plate is connected to the first slider.

6. The signal detection device as described in claim 5, characterized in that, The first guiding component further includes: The second limiting block is located at both ends of the first slide rail and is used to limit the movement of the first slider.

7. The signal detection device as described in claim 5, characterized in that, The antenna positioning mechanism further includes a second guide component that moves along a first direction. The second guide component includes a second slide rail extending along the first direction and a second slider that is slidably connected to the second slide rail. The connecting plate is disposed on the second slider, and the second slide rail is connected to the first slider.

8. The signal detection device as described in claim 5, characterized in that, The base plate of the fixed seat is inclined, the body of the fixed seat is perpendicular to the base plate, the body of the fixed seat includes a limiting post perpendicular to the base plate, the limiting post abuts against the side of the glass to be tested, the first lifting assembly and the second lifting assembly are both perpendicular to the base plate, and the first guide assembly is perpendicular to the first lifting assembly and the second lifting assembly.

9. The signal detection device as described in claim 1, characterized in that, The signal detection device also includes: A matrix switch, one end of which is electrically connected to the network analyzer and the other end of which is electrically connected to the transmitting antenna, is used to automatically switch the frequency of the transmitted signal.

10. The signal detection device as described in claim 9, characterized in that, The signal detection device also includes: A first adapter, electrically connected to the matrix switch; and The second adapter is electrically connected to the transmitting antenna and the receiving antenna, and the second adapter is detachably electrically connected to the first adapter.

11. The signal detection device as described in claim 1, characterized in that, The signal detection device also includes: A display, electrically connected to the network analyzer, is used to display detection information, wherein the detection information includes the signal loss of the glass under test at different frequencies.

12. The signal detection device as described in claim 11, characterized in that, The signal detection device also includes: The memory is used to store preset standards; The processor is electrically connected to the memory and reads the preset standard. When the processor determines that the signal loss of the glass under test is greater than the preset standard, it transmits a first display instruction to the display. The display displays first information according to the first display instruction, and the first information is used to indicate that the glass under test is unqualified. When the processor determines that the signal loss of the glass under test is less than or equal to the preset standard, it transmits a second display instruction to the display. The display displays second information according to the second display instruction, and the second information is used to indicate that the glass under test is qualified.

13. The test method for the signal detection device as described in any one of claims 1-12, characterized in that, Includes the following steps: (1) Turn on the network analyzer; (2) Before the measurement begins, calibrate the network analyzer by connecting the network analyzer port to the cable and using a network analyzer calibration kit to perform dual-port calibration. (3) Connect the transmitting antenna and the receiving antenna to the network analyzer with cables respectively, and calibrate the entire system to zero without placing the glass under test. (4) Place the glass to be tested into the glass fixing mechanism. The transmitting antenna and the receiving antenna are set on the opposite sides of the glass to be tested through the antenna positioning mechanism. The electromagnetic wave signal is emitted from the transmitting port of the network analyzer and transmitted to the glass to be tested through the cable and the transmitting antenna. After the electromagnetic wave penetrates the glass to be tested, it returns to the receiving port of the network analyzer through the receiving antenna and the cable. The difference between the received and transmitted electromagnetic wave signals is calculated, that is, the signal loss of the glass to be tested is measured, and the quality of the glass to be tested is determined.

14. The testing method for the signal detection device as described in claim 13, characterized in that, The frequency range of the network analyzer in step (1) must be at least 300MHz-8.5GHz.

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