A test component and its control device, test method and readable storage medium

Abstract

The present invention provides a test component and its control device, a test method and a readable storage medium. The test component includes a test part, a first cable, a second cable and a switch component. The test component has a first adapter and a second adapter, the filter is arranged on the test component, and the test component can switch between a common-mode insertion loss measurement mode and a differential-mode insertion loss measurement mode; the switch component is arranged on the test component, and the switch component can switch between a first gear and a second gear; when the switch component is in the first gear, the test component is in a common-mode insertion loss measurement mode, and the test component can measure the common-mode insertion loss value of the filter; when the switch component is in the second gear, the test component is in a differential-mode insertion loss measurement mode, and the test component can measure the differential-mode insertion loss value of the filter. The switch component switches between the first gear and the second gear to detect the common-mode insertion loss value and the differential-mode insertion loss value of the filter.

Description

Technical Field

[0001] The present invention belongs to the technical field of filter detection, and in particular relates to a test component and a control device thereof, a test method and a readable storage medium. Background Art

[0002] In the relevant technology, filtering the power supply of electronic products by filters has become a conventional means to solve the problem of electromagnetic interference in the power supply. Bidirectional interference suppression can be achieved through passive filters, which can not only suppress the switching frequency interference signals generated by the device itself to the outside world, but also suppress and attenuate the differential and common-mode interference signals coupled into the device through the power line. Therefore, it is necessary to detect the common-mode and differential-mode insertion losses of the filter. When performing insertion loss tests on the filter, it is necessary to replace the differential-mode and common-mode insertion loss test tooling cables separately, resulting in too many test cables and low test efficiency. Summary of the invention

[0003] In the first aspect, an embodiment of the present invention provides a test component for testing a filter, wherein the filter has a first input end and a first output end, and the test component includes a test component, a first cable, a second cable, and a switch component. The test component has a first adapter and a second adapter, the filter is arranged on the test component, and the test component can switch between a common-mode insertion loss measurement mode and a differential-mode insertion loss measurement mode; one end of the first cable is connected to the first input end, and the other end of the first cable is connected to the first adapter; one end of the second cable is connected to the first output end, and the other end of the second cable is connected to the second adapter; the switch component is arranged on the test component, the switch component is connected to the first adapter and the second adapter respectively, and the switch component can switch between a first gear and a second gear; when the switch component is in the first gear, the test component is in a common-mode insertion loss measurement mode, and the test component can measure the common-mode insertion loss value of the filter; when the switch component is in the second gear, the test component is in a differential-mode insertion loss measurement mode, and the test component can measure the differential-mode insertion loss value of the filter.

[0004] In a second aspect, an embodiment of the present invention provides a testing method for testing a filter, wherein the filter has a first input end and a first output end, and the testing method includes: controlling one end of a first cable to be connected to the first input end, and controlling the other end of the first cable to be connected to the first adapter of the test component; controlling one end of a second cable to be connected to the first output end, and controlling the other end of the second cable to be connected to the second adapter of the test component; controlling a switch component to switch between a first gear position and a second gear position, so that the test component switches between a common-mode insertion loss measurement mode and a differential-mode insertion loss measurement mode; and controlling the test component to measure the insertion loss value of the filter according to the gear position of the switch component.

[0005] In a third aspect, an embodiment of the present invention provides a control device for a test component, comprising a memory and a processor, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the test method in any of the above embodiments are implemented. Therefore, the control device of the test component has all the beneficial effects of the test method, which will not be described in detail here.

[0006] In a fourth aspect, an embodiment of the present invention provides a readable storage medium on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the test method in any of the above embodiments are implemented. Therefore, the readable storage medium has all the beneficial effects of the test method, which will not be repeated here.

[0007] The beneficial effects brought by the present invention are as follows:

[0008] It can be seen from the above scheme that an embodiment of the present invention provides a test component for testing a filter. After the filter is installed on the test component, the test component of the present application can switch between the common-mode insertion loss measurement mode and the differential-mode insertion loss measurement mode by regulating the switch component between the first gear and the second gear, thereby detecting the common-mode insertion loss value and the differential-mode insertion loss value of the filter, and measuring the common-mode and differential-mode insertion losses without changing the test cable. When measuring the common-mode and differential-mode insertion losses of the filter, only the mode conversion switch needs to be switched, and there is no need to replace the tooling cable or change the connection method, which simplifies the test process and improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 An exploded view showing a test assembly according to an embodiment of the present invention;

[0010] Figure 2 A schematic diagram showing the structure of a test component according to an embodiment of the present invention;

[0011] Figure 3 A schematic diagram showing a filter according to an embodiment of the present invention;

[0012] Figure 4 One of the circuit principles and connection diagrams of a test assembly according to an embodiment of the present invention;

[0013] Figure 5 A second schematic diagram showing the circuit principle and connection of a test assembly according to an embodiment of the present invention;

[0014] Figure 6 A flow chart showing a testing method according to an embodiment of the present invention;

[0015] Figure 7 A schematic block diagram showing a control device of a test assembly according to an embodiment of the present invention.

[0016] In the figure, 100 test assembly, 102 test component, 104 first transfer interface, 106 second transfer interface, 108 signal input port, 110 signal output port, 112 base, 114 bottom plate, 116 first cable, 118 second cable, 120 switch assembly, 122 first contact, 124 second contact, 126 third contact, 128 fourth contact, 130 fifth contact, 132 sixth contact, 134 first resistor, 136 second resistor, 138 cover, 140 first cavity, 1 42 reed, 144 conductive pad, 146 signal transceiver component, 148 signal input component, 150 signal receiving component, 152 locking component, 154 first matching component, 156 second matching component, 158 grounding component, 160 handle, 162 third cable, 164 fourth cable, 166 third matching component, 168 fourth matching component, 200 filter, 202 first input end, 204 first output end, 400 control device of test component, 410 memory, 420 processor. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 , Figure 2 and Figure 3As shown, in some embodiments of the present invention, a test component 100 is proposed for testing a filter 200, the filter 200 having a first input terminal 202 and a first output terminal 204, and the test component 100 includes a test component 102, a first cable 116, a second cable 118, and a switch component 120. The test component 102 has a first transfer interface 104 and a second transfer interface 106, the filter 200 is arranged in the test component 102, and the test component 102 can switch between a common-mode insertion loss measurement mode and a differential-mode insertion loss measurement mode; one end of the first cable 116 is connected to the first input terminal 202, and the other end of the first cable 116 is connected to the first transfer interface 104; one end of the second cable 118 is connected to the first output terminal 204, and the other end of the second cable 118 is connected to the second transfer interface 106; the switch component 120 is arranged in the test component 102. The test component 102 and the switch component 120 are respectively connected to the first adapter 104 and the second adapter 106, and the switch component 120 can be switched between a first position and a second position; when the switch component 120 is in the first position, the test component 102 is in a common-mode insertion loss measurement mode, and the test component 100 can measure the common-mode insertion loss value of the filter 200; when the switch component 120 is in the second position, the test component 102 is in a differential-mode insertion loss measurement mode, and the test component 100 can measure the differential-mode insertion loss value of the filter 200.

[0019] In this embodiment, the test component 100 is used to test the filter 200, so that the filter 200 can be detected. The filter 200 has a first input terminal 202 and a first output terminal 204, so that the filter 200 can receive and send test signals. The test component 100 includes a test component 102, a first cable 116, a second cable 118 and a switch component 120. The test component 102 has a first adapter 104 and a second adapter 106, and the filter 200 is arranged on the test component 102 to achieve the installation of the filter 200. The test component 102 can switch between the common mode insertion loss measurement mode and the differential mode insertion loss measurement mode, so that the test component 100 can measure the filter 200 in the common mode insertion loss measurement mode and the differential mode insertion loss measurement mode. One end of the first cable 116 is connected to the first input end 202, the other end of the first cable 116 is connected to the first transfer port 104, one end of the second cable 118 is connected to the first output end 204, and the other end of the second cable 118 is connected to the second transfer port 106, so as to realize the installation of the first cable 116 and the second cable 118, so as to realize the circuit connection between the test component 102 and the filter 200, so that the test signal can flow between the filter 200 and the test component 100, so that the test signal can enter the filter 200 for filtering, and output through the test component 102 after filtering, so that the performance of the filter 200 can be detected according to the state of the test signal before and after passing through the filter 200. The switch component 120 is arranged on the test component 102, and the switch component 120 is respectively connected to the first transfer port 104 and the second transfer port 106, and the switch component 120 can be switched between the first gear and the second gear to realize the arrangement of the switch component 120. When the switch component 120 is in the first gear, the test component 102 is in the common-mode insertion loss measurement mode. The test component 100 can measure the common-mode insertion loss value of the filter 200. By adjusting the switch component 120, the test component 102 is in the common-mode insertion loss measurement mode. At this time, the test component 102 receives the test signal through the signal input port 108. After passing through the filter 200, the test signal is output through the signal output port 110 of the test component 102, so that the common-mode insertion loss value of the filter 200 can be detected according to the output signal.When the switch component 120 is in the second gear, the test component 102 is in the differential mode insertion loss measurement mode. The test component 100 can measure the differential mode insertion loss value of the filter 200. By adjusting the switch component 120, the test component 102 is in the differential mode insertion loss measurement mode. At this time, the test component 102 receives the test signal through the signal input port 108. After passing through the filter 200, the test signal is output through the signal output port 110 of the test component 102, so that the differential mode insertion loss value of the filter 200 can be detected according to the output signal. Therefore, the test component 100 of the present application, after the filter 200 is installed on the test component 102, by utilizing the adjustment of the switch component 120 between the first gear and the second gear, enables the test component 102 to switch between the common-mode insertion loss measurement mode and the differential-mode insertion loss measurement mode, thereby being able to detect the common-mode insertion loss value and the differential-mode insertion loss value of the filter 200, and perform the common-mode and differential-mode insertion loss measurements without replacing the test cable. When measuring the common-mode and differential-mode insertion losses of the filter 200, only the mode conversion switch needs to be switched, and there is no need to replace the tooling cable or change the connection method, thereby simplifying the test process and improving the test efficiency.

[0020] Specifically, when the test component 100 of the present application measures the insertion loss of the filter 200, the detection mode of the test component 102 is adjusted through the switch component 120. There is no need to replace the differential mode and common mode insertion loss test tool cables separately, and there is no need to have too many test cables due to replacing the differential mode and common mode insertion loss test tool cables. This simplifies the complexity of the operation process and improves the test efficiency.

[0021] Specifically, the filter 200 is a passive filter.

[0022] This embodiment provides a test component 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0023] like Figure 1 , Figure 4 and Figure 5As shown, the test component 100 also includes a first resistor 134 and a second resistor 136, one end of the first resistor 134 is connected to the test component 102, one end of the second resistor 136 is connected to the test component 102, the test component 102 also has a signal input port 108 and a signal output port 110, the positive pole of the signal input port 108 is connected to the positive pole of the first adapter 104, the negative pole of the signal input port 108 is connected to the test component 102, the positive pole of the signal output port 110 is connected to the positive pole of the second adapter 106, the negative pole of the signal output port 110 is connected to the test component 102, and the switch component 120 includes a first contact 122, a second contact 124, a third contact 126, a fourth contact 128, a fifth contact 130 and a sixth contact 132. The first contact 122 is connected to the negative pole of the first adapter 104; the second contact 124 is connected to the negative pole of the second adapter 106; the third contact 126 is connected to the positive pole of the signal input port 108; the fourth contact 128 is connected to the positive pole of the signal output port 110; the fifth contact 130 is connected to the other end of the first resistor 134; the sixth contact 132 is connected to the other end of the second resistor 136; when the switch component 120 is in the first gear, the first contact 122 is connected to the third contact 126, and the second contact 124 is connected to the fourth contact 128; when the switch component 120 is in the second gear, the first contact 122 is connected to the fifth contact 130, and the second contact 124 is connected to the sixth contact 132.

[0024] In this embodiment, the test component 100 further includes a first resistor 134 and a second resistor 136, one end of the first resistor 134 is connected to the test component 102, and one end of the second resistor 136 is connected to the test component 102, so as to realize the installation of the first resistor 134 and the second resistor 136, so that the first resistor 134 and the second resistor 136 are grounding resistors. The test component 102 also has a signal input port 108 and a signal output port 110, the positive electrode of the signal input port 108 is connected to the positive electrode of the first transfer port 104, the negative electrode of the signal input port 108 is connected to the test component 102, the positive electrode of the signal output port 110 is connected to the positive electrode of the second transfer port 106, and the negative electrode of the signal output port 110 is connected to the test component 102, so that the test component 102 can receive a test signal through the signal input port 108, and the test signal can be output through the signal output port 110 after being processed by the filter 200. The switch assembly 120 includes a first contact 122, a second contact 124, a third contact 126, a fourth contact 128, a fifth contact 130, and a sixth contact 132, that is, the switch assembly 120 is a double-pole double-throw switch. The first contact 122 is connected to the negative pole of the first transfer port 104; the second contact 124 is connected to the negative pole of the second transfer port 106; the third contact 126 is connected to the positive pole of the signal input port 108; the fourth contact 128 is connected to the positive pole of the signal output port 110; the fifth contact 130 is connected to the other end of the first resistor 134; and the sixth contact 132 is connected to the other end of the second resistor 136, so as to realize the arrangement of the switch assembly 120. When the switch assembly 120 is in the first gear position, the first contact 122 is connected to the third contact 126, and the second contact 124 is connected to the fourth contact 128, so that the test component 102 is in the common mode insertion loss measurement mode, so that the test component 100 can measure the common mode insertion loss value of the filter 200. When the switch assembly 120 is in the second gear position, the first contact 122 is connected to the fifth contact 130, and the second contact 124 is connected to the sixth contact 132, so that the test component 102 is in the differential mode insertion loss measurement mode, so that the test component 100 can measure the differential mode insertion loss value of the filter 200.

[0025] Specifically, in Figure 4 and Figure 5 In FIG. 1 , IN represents the input terminal of the filter 200, OUT represents the output terminal of the filter 200, and GND represents the ground line. “+” represents the positive pole, and “-” represents the negative pole.

[0026] Specifically, the first resistor 134 is a first 50Ω grounding resistor, and the second resistor 136 is a second 50Ω grounding resistor.

[0027] Specifically, the testing component 102 includes a base 112 and a bottom plate 114 , and a first resistor 134 and a second resistor 136 are disposed on the bottom plate 114 .

[0028] Specifically, the signal input port 108 and the signal output port 110 are disposed on a side wall of the test component 102 .

[0029] This embodiment provides a test component 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0030] like Figure 1 and Figure 2 As shown, the test assembly 100 further includes a cover 138, a reed 142 and a conductive pad 144. The cover 138 has a first cavity 140, and the cover 138 is disposed on one side of the test component 102, and the filter 200 is located in the first cavity 140. The reed 142 is disposed on the test component 102, and is located between the inner side of the cover 138 and the test component 102; the conductive pad 144 is disposed on the test component 102, and is located between the edge of the cover 138 and the test component 102.

[0031] In this embodiment, the test assembly 100 further includes a cover 138, a reed 142 and a conductive pad 144. The cover 138 has a first cavity 140, and the cover 138 is disposed on one side of the test component 102. The filter 200 is located in the first cavity 140 to shield the filter 200, so that the cover 138 can protect the filter and ensure the stability of the filter 200 during testing. The reed 142 is disposed on the test component 102, and is located between the inner side of the cover 138 and the test component 102, so as to install and fix the reed 142. By providing the reed 142, the electromagnetic shielding performance of the test assembly 100 can be ensured. The conductive pad 144 is disposed on the test component 102, and is located between the edge of the cover 138 and the test component 102, so as to install and fix the conductive pad 144. By providing the conductive pad 144, the electromagnetic shielding performance of the test assembly 100 can be ensured. By providing the reed 142 and the conductive pad 144 , the electromagnetic shielding performance of the test component 100 can be ensured, so as to improve the accuracy of the test component 100 in detecting the filter 200 .

[0032] Specifically, the test assembly 100 also includes a handle 160, which is disposed on a side of the cover 138 away from the test assembly 100. By arranging the handle 160 on the cover 138, the cover 138 can be operated easily, thereby improving the convenience of disassembling and installing the filter 200.

[0033] Specifically, the inner wall of the first cavity 140 has a conductive layer, that is, the inner wall of the first cavity 140 is conductively treated so that the inner wall of the first cavity 140 forms an electromagnetic shielding layer, which effectively blocks external electromagnetic interference and helps to protect the filter 200 from interference from the external electromagnetic environment. The electromagnetic shielding layer can also reduce the leakage and reflection of the test signal around the filter 200.

[0034] This embodiment provides a test component 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0035] like Figure 4 and Figure 5 As shown, the test component 100 also includes a signal transceiver component 146 , which includes a signal input component 148 and a signal receiving component 150 . The signal input component 148 is connected to the signal input port 108 , and the signal receiving component 150 is connected to the signal output port 110 .

[0036] In this embodiment, the test component 100 further includes a signal transceiver component 146, which includes a signal input component 148 and a signal receiving component 150. The signal input component 148 is connected to the signal input port 108, and the signal receiving component 150 is connected to the signal output port 110 to achieve the connection between the signal input component 148 and the signal output component. The signal input component 148 can send the test signal to the filter 200 through the signal input port 108. The signal receiving component 150 can receive the test signal processed by the filter 200 transmitted by the test component 102, thereby achieving the measurement of the insertion loss of the filter 200.

[0037] Specifically, the signal input component 148 is a signal source, and the signal receiving component 150 is a spectrum analyzer.

[0038] Specifically, the signal transceiver component 146 is a network vector analyzer, so that the insertion loss of multiple frequency points can be swept and measured within a certain frequency band.

[0039] Specifically, Figure 1 and Figure 2 As shown, the test component 100 also includes a third cable 162 and a fourth cable 164. One end of the third cable 162 is connected to the signal input port 108, and the other end of the third cable 162 is connected to the signal input component 148; one end of the fourth cable 164 is connected to the signal output port 110, and the other end of the fourth cable 164 is connected to the signal receiving component 150. The test signal of the signal input component 148 can enter the test component 102 through the third cable 162, and the test signal output by the test component 102 can enter the signal receiving component 150 through the fourth cable 164.

[0040] Specifically, when the switch component 120 is in the first gear, the switch component 120 controls the test component 102 to be placed in a common-mode insertion loss measurement mode, and the signal source output is set to 50Ω (ohm) impedance. The signal source can output a fixed-frequency 0dB (decibel) excitation signal, that is, the signal source can output a test signal to the test component 102. After the test signal passes through the filter 200, it is received by the external spectrum analyzer through the test component 102. The measurement input of the external spectrum analyzer is set to 50Ω impedance, and the common-mode insertion loss value at a fixed frequency point can be measured.

[0041] Specifically, when the switch component 120 is in the second gear, the switch component 120 controls the differential mode insertion loss measurement mode of the test component 102, and the external signal source output is set to 50Ω impedance, and outputs a 0dB excitation signal of a fixed frequency, that is, the signal source can output a test signal to the test component 102. After the test signal passes through the filter 200, it is received by the external spectrum analyzer through the test component 102. The measurement input of the external spectrum analyzer is set to 50Ω impedance, and the differential mode insertion loss value at a fixed frequency point can be measured.

[0042] This embodiment provides a test component 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0043] like Figure 1 and Figure 2 As shown, the test assembly 100 also includes a locking component 152, which is disposed on the test component 102; when the locking component 152 is in a locked state, the filter 200 is fixed to the test component 102; when the locking component 152 is in an unlocked state, the filter 200 is detached from the test component 102.

[0044] In this embodiment, the test assembly 100 also includes a locking component 152, which is arranged on the test component 102 to achieve the installation and fixation of the locking component 152. When the locking component 152 is in a locked state, the filter 200 is fixed to the test component 102 to achieve the fixation of the filter 200, so as to prevent the filter 200 from moving during the detection process and causing it to be loosely in contact with the grounding component 158, thereby ensuring the stability and accuracy of the filter 200 during the measurement process and preventing the measurement error caused by the movement or shaking of the filter 200. After the measurement is completed, the locking component 152 can easily unlock the filter 200 so that it can be easily removed from the test component 102, thereby improving the flexibility of the test. By setting the locking component 152, the installation and removal of the filter 200 becomes faster and simpler, thereby improving the efficiency of the entire test process.

[0045] Specifically, the locking component 152 includes a first mating component 154 and a second mating component 156. The first mating component 154 is fixedly installed on a side of the test component 102 close to the filter 200, and one side of the second mating component 156 is arranged on a side of the test component 102 close to the filter 200. One side of the second mating component 156 passes through the first mating component 154. The first mating component 154 can tighten and loosen the second mating component 156. When the first mating component 154 tightens the second mating component 156, the locking component 152 can fix the filter 200 on the test component 102; when the first mating component 154 loosens the second mating component 156, the filter 200 can be detached from the test component 102.

[0046] Specifically, the first matching component 154 is mounted on the test component 102 by a second screw, and one side of the second matching component 156 is mounted on the test component 102 by a third screw.

[0047] Specifically, the first mating component 154 is a ratchet locker, and the second mating component 156 is a strap. The strap can be used to fix the filter 200 under test on the grounding copper plate. The strap can be tightened by the ratchet locker to make the shell plane of the filter 200 under test pressed and contacted with the grounding copper plate. The simple locking method can achieve reliable contact between the shell plane of the filter 200 and the grounding copper plate, thereby ensuring that the filter 200 is reliably grounded.

[0048] This embodiment provides a test component 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0049] like Figure 1 and Figure 2 As shown, the test assembly 100 further includes a grounding component 158 ​​, which is disposed on the test component 102 and located between the test component 102 and the filter 200 .

[0050] In this embodiment, the grounding component 158 ​​is disposed on the test component 102, between the test component 102 and the filter 200, so as to realize the installation and fixation of the grounding component 158. By disposing the grounding component 158 ​​between the filter 200 and the test component 102, it is possible to ensure that the filter 200 is reliably grounded, ensure the accuracy of the test signal during the measurement process, and reduce the error of the high-frequency insertion loss test result caused by the unreliable grounding of the filter 200.

[0051] Specifically, the first adapter 104 is located on a first side of the grounding component 158 ​​, the second adapter 106 is located on a second side of the grounding component 158 ​​, and the first side of the grounding component 158 ​​and the second side of the grounding component 158 ​​are correspondingly arranged.

[0052] Specifically, the first matching component 154 is located on the third side of the grounding component 158 ​​, the second matching component 156 is located on the fourth side of the grounding component 158 ​​, and the third side of the grounding component 158 ​​is corresponding to the fourth side of the grounding component 158 ​​.

[0053] Specifically, the test component 102 has a mounting surface, and the grounding component 158 ​​is a grounding copper plate, which is mounted on the mounting surface directly above the test component 102 by a first screw.

[0054] Specifically, the distance between each edge of the contact surface of the grounding copper plate contacting the test component 102 and each edge on the same side of the mounting surface directly above the test component 102 is 40 mm to 60 mm.

[0055] Specifically, the distance between each edge of the contact surface of the grounding copper plate contacting the test component 102 and each edge on the same side of the mounting surface directly above the test component 102 is 40 mm.

[0056] Specifically, the distance between each edge of the contact surface of the grounding copper plate contacting the test component 102 and each edge on the same side of the mounting surface directly above the test component 102 is 50 mm.

[0057] Specifically, the distance between each edge of the contact surface of the grounding copper plate contacting the test component 102 and each edge on the same side of the mounting surface directly above the test component 102 is 60 mm.

[0058] Specifically, the first matching component 154 is located on the third side of the grounding component 158 ​​, the second matching component 156 is located on the fourth side of the grounding component 158 ​​, and the third side of the grounding component 158 ​​is corresponding to the fourth side of the grounding component 158 ​​.

[0059] Specifically, the test assembly 100 also includes a third mating component 166 and a fourth mating component 168. The third mating component 166 is arranged on the cover body 138, and the fourth mating component 168 is arranged on the outer side of the side wall of the base 112. The third mating component 166 is connected to the fourth mating component 168 to lock the cover body 138 and the base 112 together.

[0060] Specifically, the third matching component 166 is a snap seat, and the fourth matching component 168 is a snap. The snap and the snap seat are used to lock the base 112 and the cover body 138, so that the inner side of the cover body 138 is in full contact with the spring leaf 142 of the base 112, and the edge of the cover body 138 is squeezed into contact with the conductive pad 144, thereby achieving the purpose of good electromagnetic shielding.

[0061] Specifically, there are multiple third matching parts 166 and multiple fourth matching parts 168 that are buckles, which improve the firmness and stability of the cover 138 and the base 112 after installation.

[0062] Specifically, the base 112 is provided with fourth matching components 168 around the periphery, and two fourth matching components 168 are provided on each side around the base 112. The cover 138 is provided with third matching components 166 around the periphery, and two third matching components 166 are provided on each side around the cover 138.

[0063] Specifically, in Figure 4 In FIG. 8 , R1 represents the first resistor 134 , and R2 represents the second resistor 136 .

[0064] Specifically, signal conversion is performed inside the test component 102: the positive pole of the first conversion interface 104 is connected to the signal input port 108, and the negative pole of the first conversion interface 104 is connected to the first contact 122; the positive pole of the second conversion interface 106 is connected to the signal output port 110, and the negative pole of the second conversion interface 106 is connected to the second contact 124; the third contact 126 is connected to the signal input port 108, the fourth contact 128 is connected to the signal output port 110, the fifth contact 130 is connected to the other end of the first 50Ω grounding resistor, and the sixth contact 132 is connected to the other end of the second 50Ω grounding resistor; one end of the first 50Ω grounding resistor and one end of the second 50Ω grounding resistor are respectively connected to the base 112 or the bottom plate 114.

[0065] Specifically, the switch component 120 is a double-pole double-position switch. When the switch component 120 is in the default position, that is, when the switch component 120 is in the first position, the first contact 122 and the third contact 126, the second contact 124 and the fourth contact 128 are short-circuited respectively, and the circuit is in the common-mode insertion loss measurement mode; when the switch component 120 is in another position, that is, when the switch component 120 is in the second position, the first contact 122 and the fifth contact 130, the second contact 124 and the sixth contact 132 are short-circuited respectively, and the circuit is in the differential-mode insertion loss measurement mode.

[0066] Specifically, the present application performs conductive treatment on the inner wall of the first cavity 140 and provides a reed 142 and a conductive pad 144 so that the cover 138 has good shielding performance, avoids interference with the filter 200, and thus improves detection accuracy.

[0067] In some embodiments of the present invention, the present invention further provides a testing method for testing a filter, the filter having a first input terminal and a first output terminal, such as Figure 6 As shown, the test methods include:

[0068] S302: Control one end of the first cable to be connected to the first input end, and control the other end of the first cable to be connected to the first adapter of the test component;

[0069] S304: controlling one end of the second cable to be connected to the first output end, and controlling the other end of the second cable to be connected to the second adapter of the test component;

[0070] S306: Control the switch component to switch between a first gear position and a second gear position, so that the test component switches between a common-mode insertion loss measurement mode and a differential-mode insertion loss measurement mode;

[0071] S308: According to the gear position of the switch component, control the test component to measure the insertion loss value of the filter.

[0072] In this embodiment, one end of the first cable is controlled to be connected to the first input end, the other end of the first cable is controlled to be connected to the first adapter of the test component, one end of the second cable is controlled to be connected to the first output end, and the other end of the second cable is controlled to be connected to the second adapter of the test component, so as to realize the installation of the first cable and the second cable, so as to realize the circuit connection between the test component and the filter, so that the test signal can flow between the filter and the test component, so that the test signal can enter the filter for filtering, and output through the test component after filtering, so that the performance of the filter can be detected according to the state of the test signal before and after passing through the filter. The switch component is controlled to switch between the first gear and the second gear, so that the test component switches between the common mode insertion loss measurement mode and the differential mode insertion loss measurement mode; according to the gear of the switch component, the test component is controlled to measure the insertion loss value of the filter, so that the measurement mode of the test component can be switched by adjusting the gear of the switch, so that the common mode insertion loss value and the differential mode insertion loss value of the filter can be detected according to the gear of the switch component. The common-mode and differential-mode insertion losses can be measured without changing the test cables. When measuring the common-mode and differential-mode insertion losses of the filter, only the mode conversion switch needs to be switched. There is no need to replace the tooling cables or change the connection method, which simplifies the test process and improves the test efficiency.

[0073] In some embodiments of the present invention, according to the gear position of the switch component, the test component is controlled to measure the insertion loss value of the filter, including: when the switch component is in the first gear position, the test component is in the common-mode insertion loss measurement mode, and the test component is controlled to measure the common-mode insertion loss value of the filter; when the switch component is in the second gear position, the test component is in the differential-mode insertion loss measurement mode, and the test component is controlled to measure the differential-mode insertion loss value of the filter.

[0074] In this embodiment, when the switch assembly is in the first gear, the test component is in the common-mode insertion loss measurement mode, and the test component is controlled to measure the common-mode insertion loss value of the filter. By adjusting the switch assembly, the test component is placed in the common-mode insertion loss measurement mode. At this time, the test component receives a test signal, and the test signal passes through the filter and is output through the test component, so that the common-mode insertion loss value of the filter can be detected according to the output signal. When the switch assembly is in the second gear, the test component is in the differential-mode insertion loss measurement mode, and the test component is controlled to measure the differential-mode insertion loss value of the filter. By adjusting the switch assembly, the test component is placed in the differential-mode insertion loss measurement mode. At this time, the test component receives a test signal, and the test signal passes through the filter and is output through the test component, so that the differential-mode insertion loss value of the filter can be detected according to the output signal. The present application utilizes the regulation of the switch component between the first gear and the second gear, so that the test component can switch between the common-mode insertion loss measurement mode and the differential-mode insertion loss measurement mode, and then the common-mode insertion loss value and the differential-mode insertion loss value of the filter can be detected, and the common-mode and differential-mode insertion losses can be measured without replacing the test cable. When measuring the common-mode and differential-mode insertion losses of the filter, it is only necessary to switch the mode conversion switch, and there is no need to replace the tooling cable or change the connection method, which simplifies the test process and improves the test efficiency.

[0075] Specifically, when the switch component is in the first gear position, the test component is in a common-mode insertion loss measurement mode, and the test component is controlled to measure the common-mode insertion loss value of the filter, including: when the switch component is in the first gear position, the test component is in a common-mode insertion loss measurement mode, and the signal input component of the signal transceiver component is controlled to input a test signal to the signal input port of the test component, and the test signal passes through the filter and is output through the signal output port of the test component, and the signal receiving component can receive the output test signal and measure the common-mode insertion loss value at a fixed frequency point.

[0076] Specifically, the signal input component is a signal source, the output of the signal input component is set to 50Ω impedance, and a 0dB excitation signal of a fixed frequency is output; the signal receiving component is a spectrum analyzer, and the external spectrum analyzer measurement input is set to 50Ω impedance to measure the common mode insertion loss value at a fixed frequency point.

[0077] Specifically, when the switch component is in the second gear position, the test component is in a differential mode insertion loss measurement mode, and the test component is controlled to measure the differential mode insertion loss value of the filter, including: when the switch component is in the second gear position, the test component is in a differential mode insertion loss measurement mode, and the signal input component of the signal transceiver component is controlled to input a test signal to the signal input port of the test component, and the test signal passes through the filter and is output through the signal output port of the test component, and the signal receiving component can receive the output test signal and measure the differential mode insertion loss value at a fixed frequency point.

[0078] Specifically, the signal input component is a signal source, the output of the signal input component is set to 50Ω impedance, and a 0dB excitation signal of a fixed frequency is output. The signal receiving component is a spectrum analyzer, and the external spectrum analyzer measurement input is set to 50Ω impedance to measure the differential mode insertion loss value at a fixed frequency point.

[0079] Specifically, in one embodiment of the present application, the signal receiving component is a network vector analyzer, which can perform frequency sweep measurement of insertion loss at multiple frequency points within a certain frequency band.

[0080] In some embodiments of the present invention, after controlling one end of the second cable to be connected to the first output end and controlling the other end of the second cable to be connected to the second adapter of the test component, the testing method further includes: controlling the signal input component to be connected to the signal input port; and controlling the signal receiving component to be connected to the signal output port.

[0081] In this embodiment, the control signal input component is connected to the signal input port; the control signal receiving component is connected to the signal output port; the signal receiving component is connected to the signal output port to realize the connection between the signal input component and the signal output component. The signal input component can send the test signal to the filter through the signal input port. The signal receiving component can receive the test signal processed by the filter transmitted by the test component, thereby realizing the measurement of the insertion loss of the filter.

[0082] Specifically, the signal input component is a signal source, which can output a test signal. The signal receiving component is a spectrum analyzer, which can receive the test signal output by the test component and measure the insertion loss of the filter.

[0083] Specifically, the signal transceiver component is a network vector analyzer, which includes a signal input component and a signal receiving component, and can perform frequency sweep measurement of insertion loss at multiple frequency points within a certain frequency band.

[0084] In some embodiments of the present invention, the control signal input component is connected to the signal input port; the control signal receiving component is connected to the signal output port, including: one end of a third cable is connected to the signal input port, and the other end of the third cable is connected to the signal input component; one end of a fourth cable is connected to the signal receiving component, and the other end of the fourth cable is connected to the signal receiving component.

[0085] In this embodiment, one end of the third cable is connected to the signal input port, and the other end of the third cable is connected to the signal input component; one end of the fourth cable is connected to the signal receiving component, and the other end of the fourth cable is connected to the signal receiving component. The test signal of the signal input component can enter the test component through the third cable, and the test signal output by the test component can enter the signal receiving component through the fourth cable.

[0086] In some embodiments of the present invention, after the control signal input component is connected to the signal input port; the control signal receiving component is connected to the signal output port, the testing method further includes: setting the cover body on the testing component so that the filter is located in the first cavity of the cover body; controlling the third mating component of the locking component to cooperate with the fourth mating component to lock the base and the cover body.

[0087] In this embodiment, the third mating component is a buckle seat, and the fourth mating component is a buckle. The buckle and the buckle seat are used to lock the base and the cover body, so that the inner side of the cover body is in full contact with the spring sheet of the base, and the edge of the cover body is in full squeeze contact with the conductive pad, thereby achieving good electromagnetic shielding and ensuring the shielding performance of the measuring component.

[0088] In some embodiments of the present invention, before controlling one end of the first cable to be connected to the first input end and controlling the other end of the first cable to be connected to the first adapter interface of the test component, the testing method further includes: controlling the filter to contact the grounding component and fixing the filter to the grounding component using a locking component.

[0089] In this embodiment, the filter is selected to contact the grounding copper plate, and the filter is fixed to the grounding component by using a locking component to ensure full contact between the filter and the grounding component, avoid shaking of the filter during the detection process, and ensure the stability of the filter.

[0090] Specifically, the locking component includes a first mating component and a second mating component. The first mating component is fixedly installed on a side of the test component close to the filter, one side of the second mating component is arranged on a side of the test component close to the filter, and one side of the second mating component passes through the first mating component. The first mating component can tighten and loosen the second mating component. When the first mating component tightens the second mating component, the locking component can fix the filter on the test component; when the first mating component loosens the second mating component, the filter can be detached from the test component.

[0091] Specifically, the grounding component is a grounding copper plate, the first matching component is a ratchet locker, and the second matching component is a strap. The filter to be tested can be fixed on the grounding copper plate by the strap. The ratchet locker can be used to tighten the strap so that the shell plane of the filter to be tested is pressed and contacted with the grounding copper plate, thereby ensuring that the filter is in full contact with the grounding copper plate.

[0092] like Figure 7 As shown, in some embodiments of the present invention, the present invention further proposes a control device 400 of a test assembly, including a memory 410 and a processor 420, wherein the memory 410 stores a program or instruction that can be run on the processor 420, and when the program or instruction is executed by the processor 420, the steps of the test method in any of the above embodiments are implemented. Therefore, the control device 400 of the test assembly has all the beneficial effects of the test method, which will not be described in detail here.

[0093] In some embodiments of the present invention, the present invention further proposes a readable storage medium on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the test method in any of the above embodiments are implemented. Therefore, the readable storage medium has all the beneficial effects of the test method, which will not be repeated here.

[0094] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A test assembly (100), characterized in that: For testing a filter (200), the filter (200) having a first input end (202) and a first output end (204), the testing component (100) comprising: A test component (102), the test component (102) having a first adapter (104) and a second adapter (106), the filter (200) being arranged on the test component (102), and the test component (102) being capable of switching between a common-mode insertion loss measurement mode and a differential-mode insertion loss measurement mode; A first cable (116), one end of the first cable (116) being connected to the first input end (202), and the other end of the first cable (116) being connected to the first transfer port (104); A second cable (118), one end of the second cable (118) being connected to the first output end (204), and the other end of the second cable (118) being connected to the second adapter (106); a switch assembly (120), the switch assembly (120) being arranged on the test component (102), the switch assembly (120) being connected to the first transfer port (104) and the second transfer port (106) respectively, and the switch assembly (120) being capable of switching between a first gear position and a second gear position; When the switch component (120) is in the first gear position, the test component (102) is in a common-mode insertion loss measurement mode, and the test component (100) is capable of measuring the common-mode insertion loss value of the filter (200); When the switch component (120) is in the second gear position, the test component (102) is in a differential mode insertion loss measurement mode, and the test component (100) is capable of measuring the differential mode insertion loss value of the filter (200).

2. The test assembly (100) according to claim 1, characterized in that The test component (100) further comprises a first resistor (134) and a second resistor (136), one end of the first resistor (134) being connected to the test component (102), one end of the second resistor (136) being connected to the test component (102), the test component (102) further comprising a signal input port (108) and a signal output port (110), the positive electrode of the signal input port (108) being connected to the positive electrode of the first transfer port (104), the negative electrode of the signal input port (108) being connected to the test component (102), the positive electrode of the signal output port (110) being connected to the positive electrode of the second transfer port (106), and the negative electrode of the signal output port (110) being connected to the test component (102), and the switch component (120) comprising: A first contact (122), the first contact (122) being connected to the negative pole of the first adapter (104); A second contact (124), the second contact (124) being connected to the negative pole of the second adapter (106); A third contact (126), the third contact (126) being connected to the positive electrode of the signal input port (108); a fourth contact (128), the fourth contact (128) being connected to the positive electrode of the signal output port (110); a fifth contact (130), the fifth contact (130) being connected to the other end of the first resistor (134); a sixth contact (132), the sixth contact (132) being connected to the other end of the second resistor (136); When the switch assembly (120) is in a first gear position, the first contact (122) is connected to the third contact (126), and the second contact (124) is connected to the fourth contact (128); When the switch assembly (120) is in the second gear position, the first contact (122) is connected to the fifth contact (130), and the second contact (124) is connected to the sixth contact (132).

3. The test assembly (100) according to claim 1, characterized in that Also includes: A cover body (138), wherein the cover body (138) has a first cavity (140), the cover body (138) is arranged on one side of the test component (102), and the filter (200) is located in the first cavity (140). A reed (142), the reed (142) being disposed on the test component (102) and located between the inner side of the cover (138) and the test component (102); A conductive pad (144) is disposed on the test component (102) and is located between an edge of the cover (138) and the test component (102).

4. The test assembly (100) according to claim 2, characterized in that Also includes: A signal transceiver component (146), the signal transceiver component (146) includes a signal input component (148) and a signal receiving component (150), the signal input component (148) is connected to the signal input port (108), and the signal receiving component (150) is connected to the signal output port (110).

5. The test assembly (100) according to any one of claims 1 to 4, characterized in that: Also includes: A locking component (152), wherein the locking component (152) is arranged on the testing component (102); When the locking component (152) is in a locked state, the filter (200) is fixed to the test component (102); When the locking component (152) is in an unlocked state, the filter (200) is disengaged from the test component (102).

6. The test assembly (100) according to any one of claims 1 to 4, characterized in that: Also includes: A grounding component (158), wherein the grounding component (158) is arranged on the test component (102) and is located between the test component (102) and the filter (200).

7. A testing method, characterized in that: Used to test a filter, the filter having a first input terminal and a first output terminal, the testing method comprising: Controlling one end of the first cable to be connected to the first input end, and controlling the other end of the first cable to be connected to the first transfer interface of the test component; Controlling one end of the second cable to be connected to the first output end, and controlling the other end of the second cable to be connected to the second transfer interface of the test component; Controlling the switch assembly to switch between a first gear position and a second gear position, so that the test component switches between a common-mode insertion loss measurement mode and a differential-mode insertion loss measurement mode; According to the gear position of the switch component, the test component is controlled to measure the insertion loss value of the filter.

8. The testing method according to claim 7, characterized in that: After controlling one end of the second cable to be connected to the first output end and controlling the other end of the second cable to be connected to the second adapter of the test component, the test method further includes: A control signal input component is connected to the signal input port; The control signal receiving component is connected to the signal output port.

9. A control device (400) for a test assembly, characterized in that: The invention comprises a memory (410) and a processor (420), wherein the memory (410) stores a program or an instruction that can be run on the processor (420), and when the program or the instruction is executed by the processor (420), the steps of the test method according to claim 7 or 8 are implemented.

10. A readable storage medium having a program or instruction stored thereon, characterized in that: When the program or the instruction is executed by a processor, the steps of the testing method according to claim 7 or 8 are implemented.

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