Detection system and detection method

Abstract

The application discloses a detection system and a detection method. The detection system comprises a mainboard, a comprehensive tester and a first test head. The mainboard is provided with a radio frequency signal line. The radio frequency signal line is provided with a test end and an antenna feed point for connecting an antenna. The comprehensive tester is electrically connected with the test end on the radio frequency signal line on the mainboard, so as to realize the purpose of detecting the radio frequency signal transmitted on the radio frequency signal line. The first test head is provided with a first electrical connection end for electrical connection and a grounding end. The first electrical connection end is electrically connected with the antenna feed point on the radio frequency signal line on the mainboard. The grounding end is used for grounding, so that the radio frequency signal line between the test end and the antenna feed point is open. The detection system and the detection method can avoid the problem of material waste of the test seat and reduce the detection cost of the radio frequency signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic device testing, and in particular to a detection system and a detection method. BACKGROUND

[0002] On an electronic device production line, the radio frequency signals (such as WIFI, GPS, antenna, etc.) of the electronic device need to be detected, so that the production personnel can calibrate the radio frequency signals emitted by the electronic device according to the detection results of the detected radio frequency signals. In the related art, a test seat is welded on the mainboard of the electronic device to detect the radio frequency signals. However, after the test seat is welded on the mainboard of the electronic device, it will remain on the mainboard of the electronic device. When mass-producing electronic devices, a test seat needs to be provided on the mainboard of each electronic device, thereby requiring a large amount of test seat materials, resulting in a waste of a large amount of test seat materials. SUMMARY

[0003] The embodiments of the present application disclose a detection system and a detection method, which can avoid the problem of test seat material waste and reduce the detection cost of radio frequency signals.

[0004] To achieve the above-mentioned purpose, in a first aspect, the present application discloses a detection system, which comprises:

[0005] a mainboard, the mainboard being provided with a radio frequency signal circuit, the radio frequency signal circuit being provided with a test end and an antenna feed point, the antenna feed point being used for connecting an antenna;

[0006] a comprehensive tester, the comprehensive tester being electrically connected with the test end, and the comprehensive tester being used for detecting the radio frequency signals on the radio frequency signal circuit; and

[0007] a first test head, the first test head having a first electrical connection end and a grounding end which are electrically connected, the first electrical connection end being used for electrically connecting with the antenna feed point, and the grounding end being used for grounding.

[0008] As an optional implementation manner, in the embodiments of the present application, the first test head further has a second electrical connection end which is electrically connected with the grounding end, and the second electrical connection end is used for electrically connecting with a grounding point of the antenna.

[0009] As an optional implementation manner, in the embodiments of the present application, the first test head comprises a first test conductor and a second test conductor, the first test conductor has the first electrical connection end, the second electrical connection end and the grounding end, the second test conductor is insulatively connected with the first test conductor, and the second test conductor forms a separable electrical connection with the second electrical connection end.

[0010] As an optional implementation, in the embodiment of the present application, the second test conductor is provided with a first accommodating cavity, the first test conductor is arranged in the first accommodating cavity and at least partially located outside the first accommodating cavity, and the part of the first test conductor located outside the first accommodating cavity has the first electrical connection end.

[0011] As an optional implementation, in the embodiment of the present application, the detection system further comprises a second test head, and the tester is electrically connected to the test end through the second test head.

[0012] As an optional implementation, in the embodiment of the present application, the second test head comprises a third test conductor and a fourth test conductor, the third test conductor is electrically connected to the test end and the tester, the fourth test conductor is insulatedly connected to the third test conductor, and the fourth test conductor is used for grounding, and the tester is further electrically connected to the fourth test conductor.

[0013] As an optional implementation, in the embodiment of the present application, the test end comprises a first test end and a second test end, the first test end is arranged on the radio frequency signal line, the second test end is arranged on the periphery of the first test end and grounded, and the second test end is insulatedly connected to the first test end.

[0014] The third test conductor is electrically connected to the first test end, the second test end is used for grounding, and the fourth test conductor is electrically connected to the second test end.

[0015] As an optional implementation, in the embodiment of the present application, the fourth test conductor is provided with a second accommodating cavity, and the third test conductor is arranged in the second accommodating cavity and at least partially located outside the second accommodating cavity.

[0016] As an optional implementation, in the embodiment of the present application, the detection system satisfies the following relationship:

[0017] L1+L2=(0.175~0.325)λ

[0018] Wherein, L1 is the distance between the test end and the antenna feed point, L2 is the distance between the antenna feed point and the grounding end, and λ is the wavelength of the target radio frequency signal.

[0019] In a second aspect, the present application further discloses a detection method based on the detection system of the first aspect, and the detection method comprises:

[0020] Electrically connecting the tester to the test end;

[0021] The first electric connection end of the first test head is electrically connected to the antenna feed point, and the grounding end of the first test head is grounded.

[0022] Compared with the prior art, the present application has the beneficial effects that:

[0023] The detection system and the detection method provided by the embodiment of the present application can reduce the influence of the radio frequency signals on the radio frequency signal detection result of the comprehensive tester, and ensure the detection accuracy of the radio frequency signals without welding a test seat at the test end, thereby reducing the waste of test seat materials and lowering the detection cost of the radio frequency signals. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0025] Figure 1 is a structural schematic diagram of the detection system disclosed by the embodiment of the present application;

[0026] Figure 2 is a structural exploded view of the first test head of the detection system disclosed by the embodiment of the present application;

[0027] Figure 3 is a structural exploded view of the second test head of the detection system disclosed by the embodiment of the present application;

[0028] Figure 4 is a flow chart of the detection method of the detection system disclosed by the embodiment of the present application.

[0029] Label description: 10, detection system; 11, mainboard; 12, universal testing machine; 13, first test head; 131, first electrical connection end; 132, ground end; 133, second electrical connection end; 13a, first test conductor; 13b, second test conductor; 13c, first accommodating cavity; 14, radio frequency signal line; 15, test end; 151, first test end; 152, second test end; 16, antenna feed point; 17, second test head; 17a, third test conductor; 17b, fourth test conductor; 17c, second accommodating groove; 18, radio frequency matching network. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0033] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific situation.

[0034] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and structures can be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0035] On the production line of electronic devices, such as the production line of electronic devices such as mobile phones, tablets and the like, the radio frequency signals (such as WIFI, GPS, antenna and the like) of the electronic devices need to be detected, so that the production personnel can judge whether the radio frequency signals emitted by the electronic devices are target radio frequency signals according to the detection results of the detected radio frequency signals. If the radio frequency signals emitted by the electronic devices are not target radio frequency signals, the production personnel can calibrate the radio frequency signals emitted by the electronic devices. In the related art, in order to improve the detection accuracy of the radio frequency signals, a test seat is often welded on the mainboard of the electronic device to detect the radio frequency signals. However, after the test seat is welded on the mainboard of the electronic device, it will remain on the mainboard of the electronic device. When mass-producing electronic devices, a test seat needs to be provided on the mainboard of each electronic device, thereby a large number of test seat materials are required, resulting in a waste of a large number of test seat materials.

[0036] Based on this, the present application discloses a detection system for detecting the radio frequency signals of electronic devices, which can avoid the problem of test seat material waste and reduce the detection cost of radio frequency signals.

[0037] The technical solutions of the present application will be further described below in combination with embodiments and drawings.

[0038] Please refer to Figure 1The application discloses a detection system, which comprises a mainboard 11, a comprehensive tester 12 and a first test head 13. The mainboard 11 is arranged in an electronic device, and a radio frequency signal line 14 is arranged on the mainboard 11. The radio frequency signal line 14 is used for transmitting a radio frequency signal of the electronic device. A test end 15 and an antenna feed point 16 for connecting an antenna are arranged on the radio frequency signal line 14. It can be understood that the radio frequency signal line 14 is used for transmitting the radio frequency signal to the antenna feed point 16, so that the radio frequency signal of the electronic device is transmitted to the antenna. The comprehensive tester 12 is an instrument for detecting the radio frequency signal. The comprehensive tester 12 is electrically connected with the test end 15, so that the comprehensive tester 12 can be used for detecting the radio frequency signal of the electronic device. The first test head 13 has a first electrically connected end 131 and a grounding end 132. The first electrically connected end 131 is used for electrically connecting with the antenna feed point 16, and the grounding end 132 is used for grounding. As a result, a circuit between the test end 15 and the antenna feed point 16 is opened, thereby reducing the influence of the radio frequency signal on the radio frequency signal line 14 between the test end 15 and the antenna feed point 16 and the radio frequency signal on the antenna feed point 16 on the detection result of the comprehensive tester 12.

[0039] That is to say, the detection system 10 is provided with the first test head 13. The first electrically connected end 131 of the first test head 13 is electrically connected with the antenna feed point 16 of the radio frequency signal line 14 on the mainboard 11, and the grounding end 132 of the first test head 13 is grounded. This is equivalent to that the radio frequency signal line 14 between the test end 15 and the antenna feed point 16 is opened. As a result, when the comprehensive tester 12 is electrically connected with the test end 15 of the radio frequency signal line 14 arranged on the mainboard 11 to detect the radio frequency signal, the influence of the radio frequency signal on the radio frequency signal line 14 between the test end 15 and the antenna feed point 16 and the radio frequency signal on the antenna feed point 16 on the detection result of the comprehensive tester 12 is reduced, so that the detection accuracy of the radio frequency signal is ensured, and it is not necessary to weld a test seat at the test end 15 to ensure the detection accuracy of the radio frequency signal. It can be seen that the technical scheme of the application can ensure the detection accuracy of the radio frequency signal while reducing the waste of test seat materials, and is beneficial to reducing the detection cost of the radio frequency signal.

[0040] In some embodiments, the detection system 10 satisfies the relationship: L1+L2=(0.175-0.325)λ, where L1 is the distance between the test end 15 and the antenna feed point 16, L2 is the distance between the antenna feed point 16 and the ground end 132 of the first test head 13, and λ is the wavelength of the target radio frequency signal, i.e. the wavelength of the target radio frequency signal of the electronic device. When the detection system 10 satisfies the above relationship, the radio frequency signal on the radio frequency signal line 14 between the test end 15 and the antenna feed point 16 and the radio frequency signal on the antenna feed point 16 can be reduced to the greatest extent to affect the detection result of the radio frequency signal by the comprehensive tester 12, which is conducive to improving the detection accuracy of the radio frequency signal by the comprehensive tester 12. If the distance between the test end 15 and the antenna feed point 16 and the distance between the antenna feed point 16 and the ground end 132 of the first test head 13 do not satisfy the above relationship, the impedance on the radio frequency signal line 14 between the test end 15 and the antenna feed point 16 and the impedance of the comprehensive tester 12 are quite different, which can cause inaccurate detection data of the comprehensive tester 12.

[0041] It can be understood that when the detection system 10 is used to detect different electronic devices and the target radio frequency signals of the electronic devices are different, or the detection system 10 is used to detect radio frequency signals of different frequencies of the same electronic device, different sizes of the first test head 13 can be replaced to change the distance between the antenna feed point 16 and the ground end 132 of the first test head 13, so that the detection system 10 can satisfy the above relationship, thereby improving the detection accuracy of the comprehensive tester 12 on different radio frequency signals or on different radio frequency signals of the same electronic device.

[0042] Since the antenna electrically connected with the antenna feed point 16 is usually provided with a grounding point, during the detection process, the radio frequency signal transmitted to the antenna feed point 16 will flow to the first test head 13 and to the antenna, and the part of the radio frequency signal flowing to the antenna will affect the detection result of the comprehensive tester 12. Therefore, in some embodiments, the first test head 13 further has a second electrically connected end 133 electrically connected with the ground end 132, and the second electrically connected end 133 is used to be electrically connected with the grounding point of the antenna, so that the part of the radio frequency signal flowing to the antenna can be transmitted to the first test head 13, thereby avoiding the situation that the part of the radio frequency signal flowing to the antenna affects the detection result of the comprehensive tester 12. That is, the grounding point of the antenna can be electrically connected with the first test head 13 through the second electrically connected end 133, so that the grounding point of the antenna can be electrically connected with the ground end 132 of the first test head 13 through the first test head 13, thereby achieving the purpose of grounding the grounding point of the antenna.

[0043] Further, if the antenna grounding point is directly grounded, the distance between the test end 15 and the antenna grounding point cannot be guaranteed to be 0.175-0.325 times the wavelength of the target radio frequency signal of the electronic device, and thus part of the radio frequency signal flowing to the antenna at the antenna feed point 16 can greatly affect the detection result of the comprehensive tester 12. Therefore, electrically connecting the antenna grounding point and the second electrical connection end 133 can make the radio frequency signal delivered to the antenna feed point 16 be delivered to the first test head 13, and thus as long as the distance between the test end 15 and the antenna feed point 16 and the distance between the antenna feed point 16 and the grounding end 132 of the first test head 13 are guaranteed to be 0.175-0.325 times the wavelength of the target radio frequency signal of the electronic device, that is, the detection system 10 satisfies the above relationship, the accuracy of the detection result of the comprehensive tester 12 can be improved. In other words, since the mainboard 11 of the electronic device has been produced and shaped before the radio frequency signal detection, that is, the distance between the test end 15 and the antenna grounding point is determined, but the distance between the test end 15 and the antenna grounding point is difficult to determine, that is, if the second electrical connection end 133 is not provided, the distance between the test end 15 and the antenna grounding point cannot be guaranteed to be 0.175-0.325 times the wavelength of the target radio frequency signal, and when the distance between the test end 15 and the antenna grounding point is not 0.175-0.325 times the wavelength of the target radio frequency signal, part of the radio frequency signal flowing to the antenna at the antenna feed point 16 can greatly affect the detection result of the comprehensive tester 12, and thus the influence of the radio frequency signal on the antenna on the detection result of the comprehensive tester 12 cannot be maximally reduced, which is not conducive to further improving the detection accuracy of the comprehensive tester 12.

[0044] Further, the first test head 13 comprises a first test conductor 13a and a second test conductor 13b, the first test conductor 13a is provided with a first electrical connection end 131, a second electrical connection end 133 and a grounding end 132, the antenna feed point 16 is grounded through the grounding end 132 of the first test conductor 13a. The second test conductor 13b is insulatedly connected with the first test conductor 13a, and the second test conductor 13b can be electrically connected with the second electrical connection end 133, so that the second test conductor 13b can be connected with the first test conductor 13a through the second electrical connection end 133, thereby enabling the second test conductor 13b to be grounded through the grounding end 132 of the first test conductor 13a, and further enabling the radio frequency signal to be better transmitted along the first test conductor 13a to the grounding end 132. The main reason is that the radio frequency signal is transmitted on the first test conductor 13a, and the second test conductor 13b is provided on the outer periphery of the first test conductor 13a along the transmission direction of the radio frequency signal, i.e. the grounding second test conductor 13b, so that the radio frequency signal is better transmitted along the first test conductor 13a, and the radio frequency signal can be prevented from being dispersed into the air, thereby affecting the detection accuracy of the test instrument 12.

[0045] Alternatively, the second test conductor 13b can be electrically connected to the second electrical connection end 133 in a separable manner, or the second test conductor 13b can be electrically connected to the second electrical connection end 133 in an inseparable manner. The following will be described separately for the two cases:

[0046] For example, when the second test conductor 13b is electrically connected to the second electrical connection end 133 in an inseparable manner, i.e. the second test conductor 13b is always electrically connected to the second electrical connection end 133, so that when the grounding end 132 of the first test conductor 13a is grounded, the grounding purpose of the second test conductor 13b can be achieved.

[0047] For another example, when the second test conductor 13b is electrically connected to the second electrical connection end 133 in a separable manner, i.e. in a normal state, the second test conductor 13b is not electrically connected to the second electrical connection end 133, and the second test conductor 13b is electrically connected to the second electrical connection end 133 only when the radio frequency signal detection is performed, so that the grounding purpose of the second test conductor 13b can also be achieved when the radio frequency signal detection is performed.

[0048] In some embodiments, the second test conductor 13b can be electrically connected to the second electrical connection end 133 in a detachable manner, i.e. the second test conductor 13b is electrically connected to the second electrical connection end 133 only when the second test conductor 13b is used to detect the radio frequency signal. In this case, the first test conductor 13a is provided with a first spring capable of conducting electricity. When the first test conductor 13a is electrically connected to the antenna feed point 16 and the antenna grounding point is electrically connected to the second electrical connection end 133, a force is applied to the second test conductor 13b in the direction of the antenna feed point 16. At this time, the first spring is compressed, the second test conductor 13b moves towards the antenna feed point 16, and the second test conductor 13b is electrically connected to the second electrical connection end 133. When the radio frequency signal detection is completed, the force applied to the second test conductor 13b is removed. At this time, the compression of the first spring disappears, the first spring returns to its original state, and the second test conductor 13b also returns to its original position.

[0049] When the second test conductor 13b is directly electrically connected to the second electrical connection end 133, the second test conductor 13b may shield part of the second electrical connection end 133, which is not conducive to the electrical connection between the antenna grounding point and the second electrical connection end 133. Therefore, the second test conductor 13b is preferably electrically connected to the second electrical connection end 133 only when the radio frequency signal detection is performed.

[0050] In some embodiments, the first test conductor 13a can be a columnar structure (for details, see Figure 2 , such as a cylindrical structure or a prismatic structure, and the second test conductor 13b can also be a columnar structure, such as a cylindrical structure or a prismatic structure. Hereinafter, the first test conductor 13a and the second test conductor 13b are both cylindrical structures.

[0051] Further, the second test conductor 13b is provided with a first accommodating cavity 13c, and the first test conductor 13a is arranged in the first accommodating cavity 13c and at least partially located outside the first accommodating cavity 13c. The first electrical connection end 131 can be arranged on the part of the first test conductor 13a located outside the first accommodating cavity 13c, so as to facilitate the electrical connection between the first electrical connection end 131 and the antenna feed point 16.

[0052] Optionally, the second electrical connection end 133 can be arranged on the portion of the first test conductor 13a outside the first accommodating cavity 13c, or arranged on the portion of the first test conductor 13a inside the first accommodating cavity 13c, as long as the second test conductor 13b can be electrically connected to the second electrical connection end 133 and the grounding point of the antenna can be electrically connected to the second electrical connection end 133. In the embodiment, the second electrical connection end 133 is arranged on the portion of the first test conductor 13a outside the first accommodating cavity 13c, so that the second electrical connection end 133 can be exposed outside the first accommodating cavity 13c, and the operation space is large when the grounding point of the antenna is connected to the second electrical connection end 133, which is beneficial to the electrical connection between the grounding point of the antenna and the second electrical connection end 133.

[0053] In some embodiments, the detection system 10 further comprises a second test head 17, and the test terminal 15 is electrically connected to the test meter 12 through the second test head 17. Since the contact end of the test meter 12 electrically connected to the test terminal 15 can be a clip or a screw, directly connecting the contact end of the test meter 12 to the test terminal 15 can cause the connection between the test meter 12 and the test terminal 15 to be not tight, thereby affecting the detection of the radio frequency signal by the test meter 12. Therefore, by arranging the second test head 17, the test meter 12 can be electrically connected to the test terminal 15 through the second test head 17, which is beneficial to improving the tightness of the connection between the test meter 12 and the test terminal 15, thereby improving the stability of the electrical connection between the test meter 12 and the test terminal 15.

[0054] In some embodiments, the second test head 17 comprises a third test conductor 17a and a fourth test conductor 17b, the third test conductor 17a is electrically connected to the test terminal 15 and the test meter 12, so that the second test head 17 can transmit the radio frequency signal on the radio frequency signal line 14 to the test terminal 15 to the test meter 12 for detection. The fourth conductor is insulatedly connected to the third test conductor 17a, and the fourth conductor is used for grounding, so that the radio frequency signal can be better transmitted along the third test conductor 17a to the test meter 12. This is mainly because the radio frequency signal is transmitted on the third test conductor 17a, and the fourth test conductor 17b is arranged on the outer periphery of the third test conductor 17a along the transmission direction of the radio frequency signal, so that the radio frequency signal is transmitted along the third test conductor 17a better, which can prevent the radio frequency signal from being dispersed into the air, thereby affecting the detection accuracy of the test meter 12.

[0055] For the purpose of realizing the grounding of the comprehensive tester 12, in some embodiments, the test terminal 15 comprises a first test terminal 151 and a second test terminal 152, the first test terminal 151 is arranged on the radio frequency signal line 14, the second test terminal 152 is arranged on the outer periphery of the first test terminal 151 and is grounded, and the second test terminal 152 is insulatedly connected with the first test terminal 151. When detecting the radio frequency signal, the third test conductor 17a is electrically connected with the first test terminal 151, so that the radio frequency signal on the radio frequency signal line 14 can be transmitted to the third test conductor 17a through the first test terminal 151, and thus the radio frequency signal can be transmitted to the comprehensive tester 12 through the third test conductor 17a for measurement. In addition, when detecting the radio frequency signal, the fourth test conductor 17b is electrically connected with the second test terminal 152, and since the second test terminal 152 is arranged to be grounded, when the fourth test conductor 17b is electrically connected with the second test terminal 152, the fourth test conductor 17b is also grounded, thereby improving the effect of transmitting the radio frequency signal along the third test conductor 17a, and preventing the radio frequency signal from being dispersed into the air, thereby affecting the detection accuracy of the comprehensive tester 12. The first test terminal 151 is a conductive material on the radio frequency signal line 14, and the second test terminal 152 is a ground layer of the main board 11.

[0056] Further, the number of the second test terminals 152 is two, and the two test terminals 15 can be arranged on both sides of the radio frequency signal line 14 in an elliptical arc shape or a circular arc shape. The actual situation can be determined, as long as the second test terminal 152 is insulatedly arranged on the outer periphery of the first test terminal 151.

[0057] Alternatively, the third test conductor 17a can be a columnar structure (for details, please refer to Figure 3 ), such as a cylindrical structure or a prismatic structure, and the fourth test conductor 17b can also be a columnar structure, such as a cylindrical structure or a prismatic structure. Hereinafter, the third test conductor 17a and the fourth test conductor 17b will be described as cylindrical structures:

[0058] In some embodiments, the fourth test conductor 17b is provided with a second accommodating cavity, the third test conductor 17a is at least partially arranged in the second accommodating cavity, and at least partially located outside the second accommodating cavity. Hereinafter, the case that the third test conductor 17a is at least partially located outside the second accommodating cavity will be exemplified:

[0059] An exemplary, the contact surface of the third test conductor 17a and the first test terminal 151 and the contact surface of the fourth test conductor 17b and the second test terminal 152 are located on the same plane, so that when the third test conductor 17a is electrically connected with the first test terminal 151, the fourth test conductor 17b can be electrically connected with the second test terminal 152, which is conducive to simplifying the detection steps of the radio frequency signal.

[0060] Another example, the contact surface of the third test conductor 17a and the first test end 151 and the contact surface of the fourth test conductor 17b and the second test end 152 are located in different planes, the height of the third test conductor 17a is greater than the height of the fourth test conductor 17b, and the second spring is arranged on the third test conductor 17a, that is, when the third test conductor 17a is electrically connected to the first test end 151, the fourth test conductor 17b cannot be electrically connected to the second test end 152, when the fourth test conductor 17b is applied to the force towards the second test end 152, the second spring is compressed under force, the fourth test conductor 17b moves towards the second test end 152 to contact the second test end 152, at this time, the purpose of grounding the fourth test conductor 17b is achieved. By arranging the second spring on the third test conductor 17a, the radio frequency signal line 14 can be turned on during the test of the radio frequency signal, which is beneficial to improve the safety of the detection system 10.

[0061] Since the comprehensive tester 12 can better achieve the purpose of detecting the radio frequency signal when grounded, in some embodiments, the comprehensive tester 12 is also electrically connected to the fourth test conductor 17b, that is, the comprehensive tester 12 is grounded through the fourth test conductor 17b, thereby achieving the purpose of grounding the comprehensive tester 12, and further improving the detection accuracy of the radio frequency signal by the comprehensive tester 12.

[0062] In some embodiments, the detection system 10 further comprises a radio frequency matching network 18, which is connected in series between the test seat and the antenna feed point 16. The radio frequency matching network 18 is used to adjust the radio frequency signal of the antenna, so that the radio frequency signal of the antenna matches the design requirements of the electronic device. Specifically, the radio frequency matching network 18 is actually a resistor connected in series between the test end 15 and the antenna feed point 16.

[0063] Further, in order to make the detection accuracy of the radio frequency signal on the mainboard 11 by the detection system 10 higher, the radio frequency matching network 18 preferably adopts a zero ohm resistor, and the inductance L of the zero ohm resistor is 10nH≤L≤6.2H, and the capacitance C of the zero ohm resistor is 1pF≤C≤5.6pF, which is beneficial to reduce the impedance on the radio frequency signal line 14 between the test end 15 and the antenna feed point 16, and is beneficial to improve the detection accuracy of the radio frequency signal by the detection system 10.

[0064] Please refer to Figure 4 The application also discloses a detection method of a detection system, which is the detection system described above. The detection method is used to detect the radio frequency signal, without the need to additionally arrange a test seat on the mainboard of the electronic device, which can avoid the problem of material waste of the test seat, thereby reducing the detection cost of the radio frequency signal. Specifically, the detection method comprises the following steps:

[0065] Step 201: Forming a test end on the mainboard.

[0066] That is, the test end is formed in the process of producing the main board of the electronic device, so that when the radio frequency signal is detected, the test end does not need to be formed on the main board through an additional step, which is beneficial to simplify the detection step of the radio frequency signal.

[0067] Further, the test end includes a first test end and a second test end, the first test end is arranged on the radio frequency signal line, the second test end is arranged on the outer periphery of the first test end and grounded, and the second test end is insulatedly connected with the first test end. If the first test end and the second test end are electrically connected, the radio frequency signal cannot be detected by the comprehensive tester, and even the transmission of the radio frequency signal on the main board can be affected.

[0068] Specifically, the first test end is a conductive material on the radio frequency signal line, and the second test end is a ground layer of the main board. That is, the surface of the main board of the electronic device is provided with the radio frequency signal line and the ground layer. When the main board of the electronic device is produced, the solder resist is coated on the surface of the main board provided with the radio frequency signal line and the ground layer, so as to prevent the circuit on the main board from being disconnected. The method for forming the test end on the main board in the detection method provided by the embodiment is that: when the solder resist is coated on the surface of the main board, the positions where the first test end and the second test end are located are shielded, so as to prevent the solder resist from being coated on the first test end and the second test end, so that the comprehensive tester can be electrically connected with the first test end and the second test end.

[0069] It can be understood that since the main board of the electronic device is mostly made of copper as a conductive material, the materials of the first test end and the second test end are copper. Of course, if it is desired to improve the transmission effect of the radio frequency signal, silver or gold can be plated on the surface of the first test end and the second test end, so as to improve the transmission effect of the radio frequency signal.

[0070] Step 202: electrically connecting the comprehensive tester to the test end.

[0071] In this step, the second test head can be electrically connected to the test end, and then the comprehensive tester is electrically connected to the second test head, or the second test head is electrically connected to the comprehensive tester, and then the second test head is electrically connected to the test end. The specific selection can be based on the detection habit of the detection personnel, and the embodiment does not make specific limitation, as long as the comprehensive tester can be electrically connected to the test end for radio frequency signal detection.

[0072] Step 203: electrically connecting the first electrically connecting end of the first test head to the antenna feed point, and grounding the ground end of the first test head.

[0073] Specifically, the first test head is selected so that when the first test head is electrically connected with the first electrical connection end, the sum of the distance between the test end and the antenna feed point and the distance between the antenna feed point and the grounding end of the first test head is 0.175-0.325 times the wavelength of the target radio frequency signal of the electronic device, so that when the first electrical connection end of the first test head is connected to the antenna feed point, the radio frequency signal on the radio frequency signal line between the test end and the antenna feed point and the radio frequency signal on the antenna feed point can be reduced to the greatest extent to affect the detection result of the comprehensive detector.

[0074] Then the grounding point of the antenna at the antenna feed point is electrically connected to the second electrical connection end of the first test head, and finally the first point connection end of the first test head is connected to the antenna feed point and the grounding end of the first test head is grounded.

[0075] It can be understood that step 202 can be performed before step 203, or step 203 can be performed before step 202, which can be determined according to the detection habit of the detector, and the present embodiment is not limited in particular.

[0076] Step 204: reading the detection result of the comprehensive detector.

[0077] That is, the detection result of the radio frequency signal measured by the comprehensive detector is read, which can be the power or wavelength of the radio frequency signal. If the detection result shows that the detected radio frequency signal is the target radio frequency signal of the electronic device, the detection operation is ended; if the detection result shows that the radio frequency signal is not the target radio frequency signal of the electronic device, the radio frequency signal is calibrated according to the detection result, and then steps 202 and 203 are repeated until the radio frequency signal on the mainboard detected is the target radio frequency signal of the electronic device.

[0078] The detection system and the detection method disclosed in the embodiments of the present application are described in detail above, and specific examples are applied in this paper to describe the principles and implementation modes of the present application. The above description of the embodiments is only used to help understand the detection system and the detection method of the present application and its core idea; at the same time, for the general technical personnel in the art, according to the idea of the present application, the specific implementation mode and the application range will be changed, and according to the above, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A detection system, characterized in that, The detection system comprises: a mainboard provided with a radio frequency signal line, the radio frequency signal line being provided with a test end and an antenna feed point, the antenna feed point being used for connecting an antenna; a comprehensive tester, which is electrically connected to the test end and is used for detecting a radio frequency signal on the radio frequency signal line; and a first test head, which has a first electrically connected end and a grounding end, the first electrically connected end being used for electrically connecting the antenna feed point, and the grounding end being used for grounding; The detection system satisfies the following relationship: L1+L2=(0.175~0.325)λ wherein L1 is the distance between the test end and the antenna feed point, L2 is the distance between the antenna feed point and the grounding end, and λ is the wavelength of a target radio frequency signal.

2. The detection system of claim 1, wherein, The first test head further has a second electrically connected end electrically connected to the grounding end, and the second electrically connected end is used for electrically connecting a grounding point of the antenna.

3. The detection system of claim 2, wherein, The first test head comprises a first test conductor and a second test conductor, the first test conductor has the first electrically connected end, the second electrically connected end and the grounding end, the second test conductor is insulatively connected to the first test conductor, and the second test conductor forms separable electrical connection with the second electrically connected end.

4. The detection system of claim 3, wherein, The second test conductor is provided with a first accommodating cavity, the first test conductor is arranged in the first accommodating cavity and at least partially located outside the first accommodating cavity, and the part of the first test conductor located outside the first accommodating cavity has the first electrically connected end.

5. The detection system of claim 1, wherein, The detection system further comprises a second test head, and the comprehensive tester is electrically connected to the test end through the second test head.

6. The detection system of claim 5, wherein, The second test head comprises a third test conductor and a fourth test conductor, the third test conductor electrically connects the test end and the comprehensive tester, the fourth test conductor is insulatively connected to the third test conductor and is used for grounding, and the comprehensive tester is further electrically connected to the fourth test conductor.

7. The detection system of claim 6, wherein, The test end comprises a first test end and a second test end, the first test end is arranged on the radio frequency signal line, the second test end is arranged on the periphery of the first test end and is grounded, and the second test end is insulatively connected to the first test end. The third test conductor is electrically connected to the first test end, the second test end is used for grounding, and the fourth test conductor is electrically connected to the second test end.

8. The detection system of claim 6, wherein, The fourth test conductor is provided with a second accommodating cavity, and the third test conductor is arranged in the second accommodating cavity and at least partially located outside the second accommodating cavity.

9. A detection method based on the detection system according to claim 1, characterized by, The detection method comprises: electrically connecting the comprehensive tester to the test end; electrically connecting the first electrically connected end of the first test head to the antenna feed point, and grounding the grounding end of the first test head.

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