Coaxial cable detection circuit and electronic equipment

Abstract

The invention provides a coaxial cable detection circuit and electronic equipment, and is applied to the technical field of power electronics, the detection circuit comprises a communication circuit, a grounding circuit and a controller, coaxial cables are connected in series through the communication circuit to form a direct current loop, one end of the obtained direct current loop is connected with a preset port of the controller, and the other end of the obtained direct current loop is connected with the grounding circuit. One end of the preset port is connected with the controller, the other end of the preset port is connected with the ground through the grounding circuit, the preset port is configured to provide high level, the controller detects the current level of the preset port, and the controller can determine that at least one coaxial cable is abnormal under the condition that the obtained current level is high level. And compared with a one-by-one detection mode in the prior art, the detection efficiency can be effectively improved, so that the actual application requirements are met.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a detection circuit and electronic equipment for a coaxial cable. Background Art

[0002] With the development of science and technology, in order to meet the wireless communication needs in different scenarios, many electronic devices are equipped with multiple antennas, such as mobile phones and tablets. Each antenna is connected to the corresponding signal source through a coaxial cable, and the coaxial cable realizes the transmission of high-frequency communication signals between the signal source and the antenna. Therefore, the operating status of the coaxial cable is crucial to the realization of the communication function of the electronic device.

[0003] However, the existing technology can only detect whether the coaxial cable is loose, open, or other faults. Each coaxial cable can be tested one by one. Since multiple coaxial cables are installed inside the same electronic device, the detection efficiency of the coaxial cables is low and it is difficult to meet actual detection needs. Summary of the invention

[0004] In view of this, the present application is dedicated to providing a coaxial cable detection circuit and electronic equipment to solve the problem of low coaxial cable detection efficiency in the prior art.

[0005] In a first aspect, the present application provides a coaxial cable detection circuit, which is applied to an electronic device including at least two coaxial cables, wherein the circuit includes: a connection circuit, a grounding circuit, and a controller, wherein:

[0006] The connecting circuit is used to connect the coaxial cables in series to form a DC loop;

[0007] One end of the DC loop is connected to a preset port of the controller, and the other end of the DC loop is grounded via the grounding circuit;

[0008] The preset port is configured to provide a high level;

[0009] The controller detects a current level of the preset port, and determines that at least one of the coaxial cables is abnormal if the current level is a high level.

[0010] In an optional embodiment, the communication circuit includes at least one first inductor;

[0011] Each of the first inductors is used to connect two of the coaxial cables in series.

[0012] In an optional embodiment, the communication circuit further includes at least one controllable switch, wherein:

[0013] One end of each of the controllable switches is connected to one of the first inductors, and the other end of each of the controllable switches is grounded;

[0014] The control end of each controllable switch is connected to the controller respectively;

[0015] When it is determined that at least one of the coaxial cables is abnormal, the controller sequentially controls each of the controllable switches to be turned on, and detects a current level of the preset port when any of the controllable switches is turned on, so as to determine the abnormal coaxial cable based on the current level.

[0016] In an optional implementation, the grounding circuit includes a second inductor, wherein:

[0017] One end of the second inductor is connected to the DC loop, and the other end of the second inductor is grounded.

[0018] In an optional implementation, the electronic device further includes a signal source module and a plurality of antennas, the signal source module includes a plurality of signal ports, and each of the coaxial cables is connected to one of the signal ports and one of the antennas;

[0019] The detection circuit also includes: multiple DC isolation circuits for prohibiting DC signals from passing through, wherein:

[0020] One end of each of the DC isolation circuits is connected to one end of one of the coaxial cables, and the other end of the DC isolation circuit is connected to a signal port or an antenna corresponding to the coaxial cable.

[0021] In an optional implementation, the DC blocking circuit includes a DC blocking capacitor.

[0022] In an optional embodiment, the controller includes a controller integrated into the electronic device itself.

[0023] In an optional implementation, when the current level is a low level, the controller determines that each of the coaxial cables is normal.

[0024] In a second aspect, the present application provides an electronic device, comprising: at least two coaxial cables and a detection circuit as described in any one of the first aspects of the present application, wherein:

[0025] The detection circuit is connected to each of the coaxial cables respectively to detect the status of each of the coaxial cables.

[0026] In an optional implementation, the electronic device provided in the second aspect of the present application further includes: a signal source module and multiple antennas, wherein the signal source module includes multiple signal ports, wherein:

[0027] Any of the signal ports is connected to one of the antennas via one of the coaxial cables.

[0028] Based on the above content, the detection circuit provided by the present application is applied to an electronic device including at least two coaxial cables. The detection circuit includes a connecting circuit, a grounding circuit and a controller. The coaxial cables are connected in series through the connecting circuit to form a DC loop. One end of the obtained DC loop is connected to a preset port of the controller, and the other end is grounded through the grounding circuit. The preset port is configured to provide a high level. The controller detects the current level of the preset port. Since the coaxial cables are connected in series and then grounded, if the coaxial cables are normal, the level of the preset port will be lowered. On the contrary, if any coaxial cable is abnormal, the preset port will maintain a high level. Based on this, the controller can determine that at least one coaxial cable is abnormal when the current level is a high level. It can be seen that through the detection circuit provided by the present application, multiple coaxial cables of the electronic device can be detected for abnormality at the same time. Compared with the method of detecting one by one in the prior art, the detection efficiency can be effectively improved, thereby meeting the actual application needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of a coaxial cable detection circuit provided by the present application.

[0031] Figure 2 It is a structural schematic diagram of another coaxial cable detection circuit provided by the present application.

[0032] Figure 3 It is a structural schematic diagram of another coaxial cable detection circuit provided by the present application.

[0033] Figure 4 This is a structural schematic diagram of another coaxial cable detection circuit provided by the present application.

[0034] Figure 5 It is a structural schematic diagram of another coaxial cable detection circuit provided by the present application.

[0035] Figure 6 It is a structural schematic diagram of an electronic device provided by this application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] As mentioned above, in existing applications, many electronic devices are equipped with multiple antennas, such as mobile phones, tablet computers, etc. Each antenna is connected to the corresponding signal source through a coaxial cable, and the coaxial cable is used to transmit high-frequency communication signals between the signal source and the antenna. Therefore, the operating status of the coaxial cable is crucial to the realization of the communication function of the electronic device.

[0038] In order to solve the problem that the prior art can only detect each coaxial cable in an electronic device one by one, resulting in low detection efficiency of the coaxial cables and difficulty in meeting actual detection needs, the present application provides a coaxial cable detection circuit that can simultaneously perform abnormal detection on multiple coaxial cables of an electronic device. Compared with the prior art method of detecting one coaxial cable at a time, the detection efficiency can be effectively improved, thereby meeting actual application needs.

[0039] Based on the above, see Figure 1 The detection circuit provided in the present application includes a controller 10, a connection circuit 20 and a grounding circuit 30.

[0040] Combination Figure 1 As shown, the detection circuit provided by the present application is applied to at least two coaxial cables ( Figure 1 In the electronic device (shown in FIG. 1 ) with two coaxial cables as an example, as a preferred embodiment, both ends of the coaxial cable are also connected to coaxial seats that match the coaxial cable. The connection between the coaxial cable and the coaxial seat can be realized by referring to the relevant technology, and this application does not limit this. It should be noted that the technical scheme connected to the coaxial cable described in the subsequent content is actually connected to the corresponding coaxial seat when the coaxial cable is provided with coaxial seats at both ends. All embodiments provided in this application follow this premise and will not be repeated in the subsequent content.

[0041] The connecting circuit 20 connects the coaxial cables in the electronic device in series to obtain a corresponding DC circuit. The preset port of the controller 10 is connected to one end of the obtained DC circuit, and the other end of the DC circuit is connected to the grounding circuit 30, and the other end of the grounding circuit 30 is grounded. Figure 1 As shown, the preset port of the controller 10 is actually grounded via the DC loop and the grounding circuit 30 in sequence.

[0042] It can be seen from the above connection relationship that the controller 10 configures its preset port to provide a high level. It can be understood that if the coaxial cables connected to the detection circuit are in a normal state, that is, there is no abnormality such as open circuit or damage, and when a coaxial socket is provided, it also includes the problem that the connection between the coaxial cable and the coaxial socket is not loose. Since the DC circuit is grounded through the grounding circuit 30, the preset port of the controller 10 is eventually pulled down to a low level. On the contrary, if any one of the coaxial cables has any one or more of the above problems, the entire DC circuit will be in an open circuit state. In this case, the preset port of the controller 10 will maintain a high level.

[0043] Based on the above detection principle, after configuring the preset port to provide a high level, the controller 10 detects the current level of the preset port. If the current level is a high level, it can be determined that at least one coaxial cable is abnormal. On the contrary, if the current level is a low level, it can be determined that all coaxial cables configured by the electronic device are normal.

[0044] To summarize, the detection circuit of the coaxial cable provided in the present application connects the coaxial cables in series through a connecting circuit to form a DC loop. One end of the DC loop is connected to the preset port of the controller, and the other end is grounded through the grounding circuit. The preset port of the controller is configured as a high level. The controller detects the current level of the preset port. Since the coaxial cables are connected in series and then grounded, if the coaxial cables are normal, the level of the preset port will be lowered. On the contrary, if any coaxial cable is abnormal, the preset port will maintain a high level. Based on this, the controller can determine that at least one coaxial cable is abnormal when the current level is a high level. It can be seen that through the detection circuit provided in the present application, multiple coaxial cables of the electronic device can be detected for abnormalities at the same time. Compared with the method of detecting one by one in the prior art, the detection efficiency can be effectively improved, thereby meeting the actual application needs.

[0045] Furthermore, the present application provides another coaxial cable detection circuit. In the detection circuit provided in this embodiment, the connection circuit includes at least one first inductor, and each first inductor is used to connect two coaxial cables in series. The grounding circuit includes a second inductor, one end of the second inductor is connected to one end of the DC loop, and the other end is grounded.

[0046] It should be noted that in existing applications, electronic devices transmit high-frequency signals through coaxial cables. For example, when applied to 5G data transmission or Bluetooth communication, the frequency of the communication signal transmitted through the coaxial cable can be as high as 700MHz to 3.3GHz. The high-frequency communication signal propagates in the coaxial cable in the form of a waveguide. Furthermore, based on the working characteristics of the inductor, the inductor is in a high-resistance state to the high-frequency signal, and the high-frequency communication signal is difficult to be transmitted through the inductor. At the same time, the inductor is in a low-resistance state to the DC signal, and the high level output by the preset port of the controller can be smoothly transmitted through the inductor. Based on this, in the detection circuit provided by the present application, the connecting circuit and the grounding circuit are preferably implemented by inductors. By utilizing the characteristics of the inductor that passes direct current and resists alternating current, it can be ensured that the high DC level provided by the preset port can be smoothly transmitted without affecting the normal transmission of the high-frequency communication signal in the original transmission path (i.e., the transmission path to which the coaxial circuit belongs), thereby completing the aforementioned detection process.

[0047] Combination Figure 2 As shown, in the case where the electronic device includes two coaxial cables, the connecting circuit includes a first inductor L1, one end of the first inductor L1 is connected to one end of the coaxial cable S1, and the other end of the first inductor L1 is connected to one end of the coaxial cable S2, that is, the coaxial cable S1 and the coaxial cable S2 are connected in series through the first inductor L1, and the coaxial cable S1, the first inductor L1 and the coaxial cable S2 constitute a DC circuit, the other end of the coaxial cable S1 serves as one end of the DC circuit, and is connected to a preset port of the controller 10, and the other end of the coaxial cable S2 serves as the other end of the DC circuit, and is connected to a grounding circuit, that is, one end of the second inductor L2, and the other end of the second inductor L2 is grounded.

[0048] The preset port of the controller 10 is configured as a high level. If the current level of the preset port obtained by the controller 10 is still a high level, it means that there is at least one abnormality in the DC circuit, and then it is determined that at least one coaxial cable is abnormal. On the contrary, if the current level obtained by the controller 10 is a low level, it can be determined that all coaxial cables are normal.

[0049] Combination Figure 3As shown, in the case where the electronic device includes three coaxial cables, the connection circuit includes two first inductors, namely, the first inductor L1 and the first inductor L3, and the grounding circuit includes the second inductor L2. One end of the first inductor L1 is connected to one end of the coaxial cable S1, the other end of the first inductor L1 is connected to one end of the coaxial cable S2, one end of the first inductor L3 is connected to the other end of the coaxial cable S2, and the other end of the first inductor L3 is connected to one end of the coaxial cable S3, that is, the coaxial cable S1, the coaxial cable S2 and the coaxial cable S3 are connected in series through the first inductor L1 and the first inductor L3, and the coaxial cable S1, the first inductor L1, the coaxial cable S2, the first inductor L3 and the coaxial cable S3 constitute a DC circuit, the other end of the coaxial cable S1 is connected to the preset port of the controller 10 as one end of the DC circuit, the other end of the coaxial cable S3 is connected to one end of the second inductor L2 as the other end of the DC circuit, and the other end of the second inductor L2 is grounded.

[0050] The preset port of the controller 10 is configured as a high level. If the current level of the preset port obtained by the controller 10 is still a high level, it means that there is at least one abnormality in the DC circuit, and then it is determined that at least one coaxial cable is abnormal. On the contrary, if the current level obtained by the controller 10 is a low level, it can be determined that all coaxial cables are normal.

[0051] By analogy, when the electronic device includes more than three coaxial cables, it can be implemented with reference to the aforementioned embodiments, which will not be described in detail here.

[0052] As mentioned above, in the coaxial cable detection circuit provided by the aforementioned embodiment, if the current level obtained by the controller is a low level, it can be determined that all the coaxial cables connected in series are normal. On the contrary, if the current level obtained by the controller is a high level, it can be confirmed that at least one coaxial cable among all the coaxial cables connected in series is abnormal. However, there is no way to further narrow the scope of the abnormal coaxial cables. When it is determined that at least one coaxial cable is abnormal, each coaxial cable needs to be further detected. If the electronic device includes a large number of coaxial cables, it still takes a lot of time to finally determine the abnormal coaxial cable, and the detection efficiency needs to be further improved.

[0053] In order to solve the above problems, the present application provides a detection circuit for a coaxial cable. On the basis of the above embodiments, the detection circuit provided in this embodiment further includes at least one controllable switch.

[0054] Combination Figure 4 As shown, taking the electronic device including three coaxial cables as an example, the connection relationship between the controller 10, the coaxial cables (S1-S3), the first inductor and the second inductor can refer to the above embodiments and Figure 4 As shown, no further repetition is given here.

[0055] The detection circuit provided in this embodiment includes two controllable switches, namely, a controllable switch K1 and a controllable switch K2. One end of the controllable switch K1 is connected to the first inductor L1, and the other end of the controllable switch K1 is grounded. Correspondingly, one end of the controllable switch K2 is connected to the first inductor L3, and the other end of the controllable switch K2 is grounded. It should be noted that when other scenarios are applied, it is sufficient to ensure that one end of each controllable switch is connected to a first inductor, and the other end of each controllable switch is grounded. Further, in order not to affect the normal transmission of high-frequency communication signals, as a preferred connection method, the controllable switch is connected to one end of the first inductor close to the grounding circuit. Such a setting can ensure that when any controllable switch is turned on, the first inductor to which it is connected can still play the role of passing direct current and blocking alternating current. Further, the control ends of each controllable switch are respectively connected to the controller 10. Of course, in another optional implementation, if the transmission of high-frequency communication signals can be suspended during the detection of the coaxial cable, or if each coaxial cable is detected when the electronic device is not transmitting high-frequency communication signals, the controllable switch can also be connected to the end of the first inductor close to the controller, and the detection function can also be realized. It is understandable that such a setting requires that each controllable switch be maintained in an off state when the coaxial cable transmits a high-frequency communication signal.

[0056] In practical applications, the controllable switch can be a controllable switch tube, such as IGBT (Insulate-Gate Bipolar Transistor, insulated gate bipolar transistor), MOSFET

[0057] (Metal-Oxide-Semiconductor Field-Effect Transistor, Metal-Oxide Semiconductor Field-Effect Transistor), etc. Of course, other methods can be selected to implement it, such as relays, etc., which will not be described in detail here. Without exceeding the scope of the idea of ​​this application, it also belongs to the scope of protection of this application.

[0058] Based on the above content, the preset port of the controller 10 is configured as a high level. If the current level of the preset port obtained by the controller 10 is still a high level, it means that there is at least one abnormality in the DC circuit, and then at least one coaxial cable is determined to be abnormal. In this case, the controller 10 controls each controllable switch to be turned on in turn, and detects the current level of the preset port when any controllable switch is turned on, so as to determine the abnormal coaxial cable according to the obtained current level.

[0059] Combination Figure 4 As shown, the process of testing each coaxial cable in turn is as follows:

[0060] S11 , the controller 10 first controls the controllable switch K2 to be turned on.

[0061] S12, the controller 10 obtains the current level of the preset port. If the current level is low, it is determined that the coaxial cables S1 and S2 are normal. At the same time, it can also be determined that the coaxial cable S3 is abnormal. Only one detection is required to identify which coaxial cable among the three coaxial cables is faulty.

[0062] S13. If in S12, the current level obtained by the controller 10 is a high level, it can be determined that at least one of the coaxial cable S1 and the coaxial cable S2 upstream of the controllable switch K2 is abnormal. Based on this, the controller 10 continues to control the controllable switch K1 to be turned on.

[0063] It should be noted that, in this case, although it can be determined that at least one of the coaxial cable S1 and the coaxial cable S2 is abnormal, it cannot be completely determined that the coaxial cable S3 is in a normal state, and the coaxial cable S3 needs to be tested separately.

[0064] S14, the controller 10 obtains the current level of the preset port. If the current level is low, the coaxial cable S1 is determined to be normal. At the same time, since the coaxial cable S1 and the coaxial cable S2 are tested to be high at the same time, it can be determined that the coaxial cable S2 is in an abnormal state.

[0065] If the current level is a high level, it can be determined that the coaxial cable S1 is abnormal. Of course, this situation cannot rule out the possibility that the coaxial cable S2 is abnormal, and the coaxial cable S2 needs to be tested separately.

[0066] In another optional implementation, the status of each coaxial cable may be detected in sequence according to another order. The specific process is as follows:

[0067] S21 , the controller 10 first controls the controllable switch K1 to be turned on.

[0068] S22, the controller 10 obtains the current level of the preset port. If the current level is low, it is determined that the coaxial cable S1 is normal, and the coaxial cable S2 and the coaxial cable S3 can be tested. Correspondingly, if the current level is high, it is determined that the coaxial cable S1 is abnormal. However, since the coaxial cables are in series, the abnormality of the coaxial cable S1 will cause the subsequent other coaxial cables to be determined to be abnormal only by a separate test.

[0069] S23. If it is determined in S22 that the coaxial cable S1 is normal, the controller 10 further controls the controllable switch K2 to be turned on.

[0070] S24, the controller 10 obtains the current level of the preset port. If the current level is a low level, it is determined that the coaxial cable S2 is normal. It can be understood that in this case, it can be determined that the coaxial cable S1 and the coaxial cable S2 are both in normal state. At the same time, since only the coaxial cable S3 is left, it can also be determined that the coaxial cable S3 is abnormal.

[0071] If the current level is a high level, it can be determined that the coaxial cable S2 is abnormal. Of course, this situation cannot rule out the possibility that the coaxial cable S3 is abnormal, and the coaxial cable S3 needs to be tested separately.

[0072] In summary, according to the detection process provided in the above embodiment, in the most ideal case, it is possible to determine which coaxial cable is abnormal after one detection. In the worst case, it is necessary to perform separate detection on at most two coaxial cables. Compared with the technical solution in the prior art that requires each coaxial cable to be detected separately, the detection efficiency can still be improved to a certain extent. Moreover, in practical applications, the above detection process is only started when it is determined that the DC circuit obtained by series connection is abnormal and it is necessary to determine which coaxial cable is abnormal. In most cases, if the DC circuit obtained by series connection is normal, the detection of multiple coaxial cables can be completed at the same time. Compared with the prior art, the detection efficiency of this solution is significantly improved.

[0073] In practical applications, an electronic device provided with a coaxial cable also includes a signal source module and multiple antennas, and the signal source module includes multiple signal ports, each coaxial cable corresponds to a signal port and an antenna, that is, there is a one-to-one correspondence between the coaxial cable, the signal port and the antenna, and each signal port is connected to an antenna via a coaxial cable. In order not to affect the influence of the detection circuit on the working process of the signal source module and the antenna, based on the above embodiment, this application provides another detection circuit, see Figure 5 As shown, the detection circuit provided in this embodiment further includes a multi-channel DC isolation circuit 40.

[0074] The DC isolation circuit 40 is used to isolate the DC signal between the signal port and the coaxial cable, and between the antenna and the coaxial cable, that is, the DC isolation circuit can prohibit the DC signal from passing through. In an optional embodiment, the DC isolation circuit 40 can be implemented by selecting a DC isolation capacitor, and the electrical property of the capacitor that the capacitor passes AC and resists DC is used to allow high-frequency communication signals to be transmitted normally, while prohibiting the high level provided by the preset port of the controller 10 from being transmitted to the signal port or the antenna.

[0075] Combination Figure 5As shown, one end of each DC isolation circuit 40 is connected to one end of a coaxial cable, and the other end of the DC isolation circuit 40 is connected to the signal port or antenna corresponding to the coaxial cable, that is, in each communication signal transmission path composed of the signal port, the coaxial cable and the antenna, two DC isolation circuits 40 are respectively arranged, one of the DC isolation circuits 40 is connected between the signal port and the coaxial cable, and the other DC isolation circuit 40 is connected between the coaxial cable and the antenna.

[0076] As mentioned above, the communication signal transmitted by the electronic device is a high-frequency AC signal, and the high level provided by the preset port of the controller is a DC signal. The electrical characteristics of the first inductor and the second inductor that pass DC and block AC can be used to prevent the communication signal from being connected in series in different signal transmission paths, thereby ensuring the normal operation of each signal transmission path. At the same time, the electrical characteristics of the DC blocking capacitor that pass AC and block DC are used to allow the communication signal to be smoothly transmitted in the signal transmission path to which it belongs without being affected by the DC blocking capacitor. The high level provided by the preset port of the controller will not affect the normal operation of the signal port and the antenna under the isolation effect of the DC blocking capacitor, thereby ensuring that the DC signal is only transmitted in the DC circuit obtained in series, thereby completing the detection of each coaxial cable without affecting the transmission of the communication signal.

[0077] It should be noted that, in actual applications, a controller is usually provided in an electronic device that uses the detection circuit provided in the present application. Therefore, as an optional implementation, the controller in the detection circuit provided in the present application can select a controller integrated in the electronic device itself, that is, the relevant functions of the aforementioned controller are integrated into a controller of the electronic device itself, and an independent controller is no longer configured for the detection circuit, thereby reducing the hardware cost of the detection circuit and the electronic device.

[0078] Furthermore, the present application also provides an electronic device, comprising at least two coaxial cables and the detection circuit provided by any of the aforementioned embodiments, wherein the detection circuit is respectively connected to each coaxial cable to detect the status of each coaxial cable.

[0079] exist Figure 6 In the embodiment shown, the electronic device includes three coaxial cables, and the detection circuit adopts the aforementioned Figure 3 The detection circuit provided in the embodiment shown, of course, in practical applications, other detection circuits provided in other embodiments may also be selected, which will not be described in detail here. The specific method of the detection circuit and the connection relationship between the detection circuit and the coaxial cable can refer to the relevant contents of the above embodiments, which will not be repeated here.

[0080] The electronic device provided in this embodiment also includes a signal source module and three antennas. The signal source module is provided with three signal ports, and each signal port is connected to an antenna via a coaxial cable. Furthermore, the electronic device is also configured with multiple impedance matching networks, and each signal port of the signal source module is connected to a DC blocking capacitor via an impedance matching network, and correspondingly, each antenna is connected to a DC blocking capacitor via an impedance matching network. In practical applications, the impedance matching network is mainly used to match the impedance parameters in the signal transmission path to meet the transmission requirements of the communication signal. As for the specific implementation method of the impedance matching network, reference can be made to the relevant technology, and this application does not make specific limitations on this.

[0081] It is understandable that when the detection circuit provided by the present application is integrated in an electronic device, and when the detection circuit is used to determine that at least one coaxial cable is abnormal, it is necessary to perform a power-on detection on the electronic device to eliminate the faulty coaxial cable.

[0082] Those skilled in the art will appreciate that the contents disclosed in this disclosure may be subject to various modifications and improvements. For example, the various devices or components described above may be implemented by hardware, or by software, firmware, or a combination of some or all of the three.

[0083] In addition, although the present disclosure makes various references to certain units in the system according to embodiments of the present disclosure, any number of different units can be used and run on the client and / or server. The units are only illustrative, and different aspects of the system and method can use different units.

[0084] Flowcharts are used in this disclosure to illustrate the steps of the method according to the embodiments of the present disclosure. It should be understood that the preceding or following steps are not necessarily performed precisely in order. On the contrary, various steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes.

[0085] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, etc. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module / unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. The present disclosure is not limited to any particular form of combination of hardware and software.

[0086] Unless otherwise defined, all terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0087] The above is an explanation of the present disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the present disclosure are described, it will be readily understood by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. It should be understood that the above is an explanation of the present disclosure and should not be considered to be limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present disclosure is defined by the claims and their equivalents.

Claims

1. A coaxial cable detection circuit, characterized in that: Applicable to an electronic device including at least two coaxial cables, the circuit includes: a connection circuit, a grounding circuit and a controller, wherein: The connecting circuit is used to connect the coaxial cables in series to form a DC loop; One end of the DC loop is connected to a preset port of the controller, and the other end of the DC loop is grounded via the grounding circuit; The preset port is configured to provide a high level; The controller detects a current level of the preset port, and determines that at least one of the coaxial cables is abnormal if the current level is a high level.

2. The detection circuit according to claim 1, characterized in that: The communication circuit includes at least one first inductor; Each of the first inductors is used to connect two of the coaxial cables in series.

3. The detection circuit according to claim 2, characterized in that: The communication circuit further comprises at least one controllable switch, wherein: One end of each of the controllable switches is connected to one of the first inductors, and the other end of each of the controllable switches is grounded; The control end of each controllable switch is connected to the controller respectively; When it is determined that at least one of the coaxial cables is abnormal, the controller sequentially controls each of the controllable switches to be turned on, and detects a current level of the preset port when any of the controllable switches is turned on, so as to determine the abnormal coaxial cable based on the current level.

4. The detection circuit according to claim 1, characterized in that: The grounding circuit includes a second inductor, wherein One end of the second inductor is connected to the DC loop, and the other end of the second inductor is grounded.

5. The detection circuit according to claim 1, characterized in that: The electronic device further comprises a signal source module and a plurality of antennas, wherein the signal source module comprises a plurality of signal ports, and each of the coaxial cables is connected to one of the signal ports and one of the antennas; The detection circuit also includes: multiple DC isolation circuits for prohibiting DC signals from passing through, wherein: One end of each of the DC isolation circuits is connected to one end of one of the coaxial cables, and the other end of the DC isolation circuit is connected to a signal port or an antenna corresponding to the coaxial cable.

6. The detection circuit according to claim 5, characterized in that: The DC blocking circuit includes a DC blocking capacitor.

7. The detection circuit according to any one of claims 1 to 6, characterized in that: The controller includes a controller integrated into the electronic device itself.

8. The detection circuit according to any one of claims 1 to 6, characterized in that: When the current level is a low level, the controller determines that each of the coaxial cables is normal.

9. An electronic device, characterized in that: include: At least two coaxial cables and a detection circuit as claimed in any one of claims 1 to 8, wherein: The detection circuit is connected to each of the coaxial cables respectively to detect the status of each of the coaxial cables.

10. The electronic device according to claim 9, characterized in that: Also includes: A signal source module and multiple antennas, wherein the signal source module includes multiple signal ports, wherein: Any of the signal ports is connected to one of the antennas via one of the coaxial cables.

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