Antenna coupling isolation device, method and digital isolator

Abstract

The present application discloses an antenna coupling isolation device, method and digital isolator, including a transmitting side isolation domain, a receiving side isolation domain and an isolation fence; the transmitting side isolation domain includes a first transmitting end, a first receiving end, a first switching switch and a first antenna, and the receiving side isolation domain includes a second transmitting end, a second receiving end, a second switching switch and a second antenna; the first transmitting end is connected to the first antenna through the first switching switch, and the second receiving end is connected to the second antenna through the second switching switch; the transmitting side isolation domain is used to switch the first antenna to the first receiving end through the first switching switch when the second antenna is detected to be switched to the second transmitting end; the receiving side isolation domain is also used to switch the second antenna to the second transmitting end through the second switching switch when an abnormal reception signal is detected. The technical problem that the existing antenna isolation device can only transmit signals in one direction is solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of network communication technology, and in particular to an antenna coupling isolation device, method, and digital isolator. Background Art

[0002] Digital isolators are devices that complete digital signal transmission under electrical isolation. They are widely used in industrial network environments, especially in harsh application environments. In isolator applications, communication between different isolation domains is achieved by transmitting signals across insulation barriers. The current isolation methods generally include optocoupler isolation, capacitive coupling isolation, and antenna coupling isolation. Although antenna coupling isolation has a faster transmission speed than optocoupler isolation and better isolation than capacitive coupling and magnetic coupling, optocoupler isolation is currently usually used in single-channel isolation devices, and single-channel isolation devices are usually unidirectional transmission between the two sides of the isolator, for example, unidirectional transmission from the transmitting side to the receiving side. When there is an abnormality on the receiving side, the transmitting side is not aware of it and will continue to send signals to the receiving side, which will not only cause invalid signal transmission, but also easily cause the driver chip to be damaged due to overheating (for example, when the isolation device is used in GaN driving and other scenarios), that is, the current antenna isolation device can only transmit signals in one direction.

[0003] The above contents are only used to assist in understanding the technical solutions of the embodiments of the present application, and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to provide an antenna coupling isolation device, method and digital isolator to solve the problem that existing antenna isolation devices can only transmit signals in one direction.

[0005] To achieve the above object, an embodiment of the present application provides an antenna coupling isolation method, the method comprising:

[0006] The antenna coupling isolation device comprises a transmitting side isolation domain, a receiving side isolation domain and an isolation fence, wherein the transmitting side isolation domain is connected to the receiving side isolation domain through the isolation fence, the transmitting side isolation domain comprises: a first transmitting end, a first receiving end, a first switching switch and a first antenna, and the receiving side isolation domain comprises: a second transmitting end, a second receiving end, a second switching switch and a second antenna;

[0007] The first transmitting end is connected to the first antenna through the first switching switch, the second receiving end is connected to the second antenna through the second switching switch, and the transmitting side isolation domain is used to send a first signal to the receiving side isolation domain;

[0008] The transmitting side isolation domain is further used to switch the first antenna to the first receiving end through the first switching switch when detecting that the second antenna is switched to the second transmitting end, so as to receive the reception abnormality signal sent by the receiving side isolation domain and stop sending the first signal;

[0009] The receiving side isolation domain is also used to switch the second antenna to the second transmitting end through the second switching switch when a reception abnormality signal is detected, so as to send the reception abnormality signal to the transmitting side isolation domain.

[0010] In one embodiment, the transmitting side isolation domain further includes a first power detection module and a first logic control module, the first power detection module is respectively connected to the first logic control module, the first switch and the first antenna, and the first logic control module is respectively connected to the first transmitting end and the first receiving end;

[0011] The first power detection module is used to detect the first power of the first antenna;

[0012] The first power detection module is also used to control the first switching switch to switch to the first receiving end when the first antenna is connected to the first transmitting end through the first switching switch and the first power meets the preset attenuation condition, so as to connect the first receiving end and the first antenna through the first switching switch when it is detected that the second antenna is switched to the second transmitting end.

[0013] In one embodiment, the first logic control module is further used to store a first connection flag of the transmitting side isolation domain;

[0014] The first logic control module is further used to control the first receiving end to operate in a low power consumption mode when the first connection mark is a transmitting connection mark, and is further used to control the first transmitting end to operate in a low power consumption mode when the first connection mark is a receiving connection mark.

[0015] In one embodiment, the receiving side isolation domain further includes a second power detection module and a second logic control module, the second power detection module is respectively connected to the second logic control module, the second switch and the second antenna, and the second logic control module is respectively connected to the second transmitting end and the second receiving end;

[0016] The second power detection module is used to detect the second power of the second antenna;

[0017] The second power detection module is also used to control the second switching switch to switch to the second receiving end when the second antenna is connected to the second transmitting end through the second switching switch and the second power meets the preset attenuation condition, and connect the second receiving end and the second antenna through the second switching switch to restore the reception of the first signal sent by the transmitting side isolation domain.

[0018] In one embodiment, the second logic control module is further used to store a second connection flag of the receiving side isolation domain;

[0019] The second logic control module is also used to control the second receiving end to run in low power consumption mode when the second connection mark is a transmitting connection mark, and is also used to control the second transmitting end to run in low power consumption mode when the second connection mark is a receiving connection mark.

[0020] In one embodiment, the first logic control module further includes a first interface unit, the first interface unit includes a first data interface, a first clock interface, a first abnormal flag interface and a second abnormal flag interface, the first data interface and the first clock interface are used to receive a first signal of a signal transmitting module connected to the transmitting side isolation domain;

[0021] The first abnormal flag interface and the second abnormal flag interface are used to transmit the reception abnormality signal received by the first receiving end to the signal transmitting module, so as to prompt the signal transmitting module to stop inputting the first signal to the transmitting side isolation domain;

[0022] The second logic control module also includes a second interface unit, which includes a second clock interface, a second data interface, a third abnormal flag interface, and a fourth abnormal flag interface, and the second data interface and the second clock interface are used to send the first signal received by the receiving side isolation domain to the signal receiving module connected to the receiving side isolation domain;

[0023] The third abnormal flag interface and the fourth abnormal flag interface are used to receive a reception abnormality signal from a second isolation control module connected to the reception side isolation domain, and transmit the reception abnormality signal to the second transmitting end, so as to send the reception abnormality signal to the transmitting side isolation domain through the second transmitting end and the second antenna.

[0024] In one embodiment, the transmitting side isolation domain is further used to switch the first antenna to the first transmitting end through the first switching switch when receiving a normal recovery signal sent by the receiving side isolation domain.

[0025] To achieve the above object, an embodiment of the present application provides an antenna coupling isolation method, which is applied to the antenna coupling isolation device as described above. The antenna coupling isolation method includes:

[0026] When it is detected that the first power of the transmitting side isolation domain meets the preset attenuation condition and the first connection mark of the transmitting side isolation domain is a transmitting connection mark, control the first switching switch in the transmitting side isolation domain to switch from the first transmitting end to the first receiving end, so that when the second antenna of the receiving side isolation domain is switched to the second transmitting end, the first antenna is switched to the first receiving end through the first switching switch;

[0027] When the second transmitting end is connected to the second antenna and the first receiving end is connected to the first antenna, the first connection mark in the transmitting side isolation domain is adjusted to the receiving connection mark, and the second connection mark in the receiving side isolation domain is adjusted to the transmitting connection mark.

[0028] In one embodiment, after the step of adjusting the first connection flag in the transmitting side isolation domain to the receiving connection flag and adjusting the second connection flag in the receiving side isolation domain to the transmitting connection flag, the step further includes:

[0029] When the transmitting-side isolation domain receives a normal recovery signal sent by the receiving-side isolation domain, the first switching switch in the transmitting-side isolation domain is controlled to switch from the first receiving end to the first transmitting end, so as to connect the first transmitting end and the first antenna through the first switching switch, and the second switching switch in the receiving-side isolation domain is controlled to switch from the second transmitting end to the second receiving end, so as to connect the second receiving end and the second antenna through the second switching switch;

[0030] When the first transmitting end is connected to the first antenna and the second receiving end is connected to the second antenna, the first connection flag is adjusted to a transmitting connection flag, and the second connection flag is adjusted to a receiving connection flag.

[0031] In addition, to achieve the above-mentioned purpose, an embodiment of the present application further provides a digital isolator, which includes the antenna coupling isolation device as described above.

[0032] In addition, to achieve the above-mentioned purpose, an embodiment of the present application also provides a computer-readable and writable storage medium, on which is stored a program for implementing the antenna coupling isolation method. When the program of the antenna coupling isolation device is executed by a processor, the steps of the antenna coupling isolation method as described above are implemented.

[0033] In addition, to achieve the above-mentioned purpose, an embodiment of the present application also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the antenna coupling isolation method as described above are implemented.

[0034] One or more technical solutions proposed in the embodiments of the present application have at least the following technical effects:

[0035] In the present application, there are a transmitting side isolation domain and a receiving side isolation domain in the antenna coupling isolation device, and the transmitting side isolation domain and the receiving side isolation domain are connected by an isolation fence. Since the transmitting side isolation domain includes a first receiving end, a first transmitting end, a first switching switch and a first antenna, the transmitting side isolation domain supports the first antenna to switch between the first receiving end and the first transmitting end, so that the transmitting side isolation domain can both send and receive signals.

[0036] Since the receiving side isolation domain includes a second receiving end, a second transmitting end, a second switching switch and a second antenna, the receiving side isolation domain supports the second antenna to switch connection between the second receiving end and the second transmitting end, so that the receiving side isolation domain can both receive and send signals.

[0037] Furthermore, in the present application, the transmitting side isolation domain can send a first signal to the receiving side isolation domain, and when the receiving side isolation domain detects a reception abnormality signal, the second antenna is switched to the second transmitting end through a second switching switch, so that the receiving side isolation domain can send the reception abnormality signal to the transmitting side isolation domain; and when the transmitting side isolation domain detects that the second antenna in the receiving side isolation domain is switched to the second transmitting end, the first antenna is switched to the first receiving end through the first switching switch to receive the reception abnormality signal sent by the receiving side isolation domain, and stops sending the first signal to the receiving side isolation domain;

[0038] Thus, the transmitting side isolation domain can send the first signal to the receiving side isolation domain through the first antenna and the second antenna, and the receiving side isolation domain can also send a reception abnormality signal to the transmitting side isolation domain through the first antenna and the second antenna, thereby realizing variable directional transmission between the transmitting side isolation domain and the receiving side isolation domain. That is, in the present application, even if the transmitting side isolation domain only includes the first antenna and the receiving side isolation domain only includes the second antenna, the first antenna and the second antenna can realize bidirectional variable transmission of the signal, thereby solving the problem that a single channel (there is a signal transmission channel between the first antenna and the second antenna) can only perform one-way information transmission. And in the case of reception abnormality in the receiving side isolation domain, the transmitting side isolation domain will also stop sending the first signal to the receiving side isolation domain, thereby avoiding invalid transmission of signals between the transmitting side isolation domain and the receiving side isolation domain, thereby solving the technical problem that the antenna isolation device can only transmit signals in one direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the embodiments of the present application, and together with the description are used to explain the principles of the embodiments of the present application.

[0040] In order to more clearly illustrate the embodiments of the present application 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 This is a schematic diagram of the module structure of an embodiment of the antenna coupling isolation device in the embodiment of the present application;

[0042] Figure 2 This is a schematic diagram of the module structure before and after the signal transmission direction is changed in the antenna coupling isolation device of the embodiment of the present application;

[0043] Figure 3 This is a schematic diagram of the module structure of another embodiment of the antenna coupling isolation device in the embodiment of the present application;

[0044] Figure 4 This is a schematic diagram of the module structure of another embodiment of the antenna coupling isolation device in the embodiment of the present application;

[0045] Figure 5 This is a circuit connection diagram of an embodiment of the antenna coupling isolation device of the present application;

[0046] Figure 6 This is a circuit connection diagram of another example of the antenna coupling isolation device in the embodiment of the present application;

[0047] Figure 7 This is a flow chart of an embodiment of the antenna coupling isolation method in the present application;

[0048] Figure 8 This is a schematic diagram of the changing trends of the first power, the second power, the first connection mark and the second connection mark in the antenna coupling isolation method in an embodiment of the present application.

[0049] Description of Figure Numbers:

[0050] 100, transmitting side isolation domain; 200, receiving side isolation domain; 300, isolation barrier; TX1, first transmitting end; RX1, first receiving end; SW1, first switching switch; ANT1, first antenna; PD1, first power detection module; 110, first logic control module; TX2, second transmitting end; RX2, second receiving end; SW2, second switching switch; ANT2, second antenna; PD2, second power detection module; 210, second logic control module; x1, first end of the first switching switch; x2, second end of the first switching switch; x3, third end of the first switching switch; y1, first end of the second switching switch; y2, second end of the second switching switch; y3, third end of the second switching switch; A1, antenna coupling isolation device with signal transmission direction from the transmitting side isolation domain to the receiving side isolation domain; A2, antenna coupling isolation device with signal transmission direction from the receiving side isolation domain to the transmitting side isolation domain; 400, signal transmitting module; 500, signal receiving module; VDD1, first power interface; RD Y1, first abnormal flag interface; DATA1 (IN+), first data interface; CLK1 (IN-), first clock interface; FLT1, second abnormal flag interface; GND1, first ground interface; LDO1, first voltage stabilizing unit; UVLO1, first protection unit; VDD2, second power interface; RDY2, second abnormal flag interface; DATA2 (OUT+), second data interface; CLK2 (OUT-), second clock interface; FLT2, second abnormal flag interface; GND2, second ground interface; LDO2, second voltage stabilizing unit; UVLO2, second protection unit; C, trigger; Z, buffer; 111, first interface unit; 112, first control unit; 211, second interface unit; 212, second control unit; P1, first power; P2, second power; flag1, first connection flag; flag2, second connection flag; T1, first transmitting antenna; T2, second transmitting antenna; R1, first receiving antenna; R2, second receiving antenna.

[0051] The purpose, features and advantages of the embodiments of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the embodiments of the present application and are not used to limit the embodiments of the present application.

[0053] In order to better understand the technical solutions of the embodiments of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0054] Digital isolators are devices that transmit digital signals in an electrically isolated state and are widely used in industrial network environments, especially in harsh application environments. Using isolators can eliminate noise caused by ground return, and isolate the manual control interface from the equipment end where high voltage is dangerous, thereby protecting devices (people) on the low-voltage side from being harmed by high voltage.

[0055] In isolator applications, communication between different isolation domains can be achieved by transmitting signals (pulse width modulation signals, serial bit streams, etc.) across the insulation barrier. The current mainstream isolation methods include optocoupler isolation, capacitive coupling isolation, and micro-transformer type magnetic coupling isolation.

[0056] Among them, optocoupler isolation technology is the most mature, but its low speed, high power consumption and easy aging make it less popular in a market with more choices; capacitive isolators are fast and have relatively low power consumption, but they require a larger on-chip area for coupling capacitors and are also most susceptible to common-mode transient interference. In real products, additional overhead is generally required to perform common-mode transient interference suppression (CMTI), which not only increases the difficulty of isolator design, but also increases the cost of isolators; on-chip transformer-type magnetic isolators are faster and have relatively low power consumption than optocouplers, but special processes are required to manufacture micro-transformers, and the process difficulty and manufacturing cost are relatively high.

[0057] In addition, isolation methods also include antenna coupling isolation, which can be used to transmit signals. Compared with optical coupling, antenna coupling has a faster transmission speed. Compared with capacitive coupling and magnetic coupling, the isolation barrier can be made thicker, so it has better isolation.

[0058] However, antenna coupling isolation is usually a one-way transmission between the two sides of the isolator, for example, one-way transmission from the transmitting side to the receiving side. When there is an abnormal situation on the receiving side, such as undervoltage or overcurrent, the transmitting side is not aware of it and continues to send signals to the receiving side, which will cause invalid signal transmission and loss of information, or overheating or damage on the transmitting side, thus affecting the reliability of antenna coupling isolation. It is also easy to affect the reliability of the system where the antenna coupling isolation is located.

[0059] In this regard, the main solution of the embodiment of the present application is: a receiving end and a transmitting end are configured in both the transmitting side isolation domain and the receiving side isolation domain of the antenna coupling isolation coupling device, so that the transmitting side isolation domain can send signals and can receive feedback signals sent by the receiving side isolation domain. For example, the feedback signal is a reception abnormality signal, and also enables the receiving side isolation domain to receive signals and send feedback signals to the transmitting side isolation domain to achieve mutual transmission between the transmitting side isolation domain and the receiving side isolation domain, so that the transmitting side isolation domain obtains the reception abnormality signal detected by the receiving side isolation domain, and then promptly controls the transmitting side isolation domain to promptly stop sending information to the receiving side isolation domain.

[0060] Specifically, in the present embodiment, power detection modules are added to both the transmitting side isolation domain and the receiving side isolation domain, the transmitting side isolation domain includes a first power detection module, and the receiving side isolation domain includes a second power detection module; when the receiving side isolation domain detects a reception abnormality signal, the receiving side isolation domain connects the second antenna to the second transmitting end through a second switching switch, so that the receiving side isolation domain sends a reception abnormality signal to the transmitting side isolation domain. Since the first antenna of the transmitting side isolation domain is also connected to the second transmitting end, when the first antenna and the second antenna are both used to send information, interference will occur between the first antenna and the second antenna, which will cause the first power of the first antenna to attenuate, so the first power detection module can be used. The measuring module detects the first power to detect whether the second antenna in the isolation domain of the receiving side is connected to the second transmitting end; when the attenuation of the first power is detected, it means that the second antenna in the isolation domain of the receiving side is connected to the second transmitting end, which can also indicate that the isolation domain of the receiving side needs to feedback the signal to the isolation domain of the transmitting side, so the isolation domain of the transmitting side needs to switch the first antenna to the second receiving end through the first switching switch to receive the abnormal reception signal sent by the isolation domain of the receiving side, and stop sending the first signal, thereby realizing the variable direction transmission between the isolation domain of the transmitting side and the isolation domain of the receiving side, avoiding the problem that the isolation domain of the transmitting side continues to send signals to the isolation domain of the receiving side, thereby causing invalid signal transmission, etc. In summary, the embodiment of the present application can realize the variable direction transmission between the isolation domain of the transmitting side and the isolation domain of the receiving side through a communication channel (the communication channel refers to the communication signal between the first antenna and the second antenna), without the need to set up a new feedback channel, reducing the cost of the antenna coupling isolation device, and avoiding the crosstalk between the two communication channels, thereby improving the reliability of the antenna coupling isolation device.

[0061] Based on this, the embodiment of the present application provides an antenna coupling isolation device, referring to Figure 1 , the antenna coupling isolation device comprises:

[0062] The antenna coupling isolation device includes a transmitting side isolation domain 100, a receiving side isolation domain 200 and an isolation barrier 300. The transmitting side isolation domain 100 is connected to the receiving side isolation domain 200 through the isolation barrier 300. The transmitting side isolation domain 100 includes: a first transmitting end TX1, a first receiving end TX1, a first switching switch SW1 and a first antenna ANT1. The receiving side isolation domain 200 includes: a second transmitting end TX2, a second receiving end RX2, a second switching switch SW2 and a second antenna ANT2.

[0063] The first transmitting end TX1 is connected to the first antenna ANT1 through the first switching switch SW1, the second receiving end RX2 is connected to the second antenna ANT2 through the second switching switch SW2, and the transmitting side isolation domain 100 is used to send a first signal to the receiving side isolation domain 200;

[0064] The transmitting side isolation domain 100 is further used for switching the first antenna ANT1 to the first receiving end RX1 through the first switching switch SW1 when detecting that the second antenna ANT2 is switched to the second transmitting end TX2, so as to receive the reception abnormality signal sent by the receiving side isolation domain 200, and stop sending the first signal;

[0065] The receiving side isolation domain 200 is also used to switch the second antenna ANT2 to the second transmitting end TX2 through the second switching switch SW2 when a reception abnormality signal is detected, so as to send the reception abnormality signal to the transmitting side isolation domain 100.

[0066] It should be noted that the antenna coupling isolation device is used to isolate the signal transmitting module 400 and the signal receiving module 500. The signal transmitting module 400 is connected to the transmitting side isolation domain 100, and the signal receiving module 500 is connected to the receiving side isolation domain 200. The transmitting side isolation domain 100 is used to send the signal of the signal transmitting module 400 to the receiving side isolation domain 200, so as to send the signal of the signal transmitting module 400 to the receiving side isolation domain 200 through the receiving side isolation domain 200.

[0067] Reference Figure 1 and Figure 2 The first transmitting terminal TX1 is connected to the first terminal of the first switching switch SW1, the first receiving terminal RX1 is connected to the second terminal of the first switching switch SW1, the third terminal of the first switching switch SW1 is connected to the first antenna ANT1, the first switching switch SW1 and the second switching switch SW2 are double-throw switches, the first switching switch SW1 connects the first transmitting terminal TX1 with the first antenna ANT1 by closing the first terminal and the third terminal, and the first switching switch SW1 connects the first receiving terminal RX1 with the first antenna ANT1 by closing the second terminal and the third terminal.

[0068] The second transmitting terminal TX2 is connected to the first end of the second switching switch SW2, the second receiving terminal RX2 is connected to the second end of the second switching switch SW2, and the third end of the second switching switch SW2 is connected to the second antenna ANT2. The second switching switch SW2 connects the second transmitting terminal TX2 to the second antenna ANT2 by closing the first end and the third end, and the second switching switch SW2 connects the second receiving terminal RX2 to the second antenna ANT2 by closing the second end and the third end.

[0069] In this embodiment, when there is no abnormality in the signal receiving module 500 of the receiving side isolation domain 200, the transmission direction between the transmitting side isolation domain 100 and the receiving side isolation domain 200 in the antenna coupling isolation device is: the transmitting side isolation domain 100 sends a signal to the receiving side isolation domain 200, the first end and the third end of the first switching switch SW1 in the transmitting side isolation domain 100 are closed, and the second end and the third end of the second switching switch SW2 in the receiving side isolation domain 200 are closed.

[0070] When the signal receiving module 500 is abnormal, the signal receiving module 500 will send a reception abnormality signal to the receiving side isolation domain 200. When the receiving side isolation domain 200 detects the reception abnormality signal, it will switch the second antenna ANT2 to the second transmitting end TX2 through the second switching switch SW2, that is, close the first end and the third end of the second switching switch SW2 to connect the second antenna ANT2 to the second transmitting end TX2; and when the transmitting side isolation domain 100 detects that the second antenna ANT2 is switched to the second transmitting end TX2, it controls the second end and the third end of the first switching switch SW1 to be closed to connect the first antenna ANT1 to the first receiving end RX1, so that the transmitting side isolation domain 100 can obtain the reception abnormality signal sent by the receiving side isolation domain 200, and at this time, the transmitting side isolation domain 100 will also stop sending the first signal to the receiving side isolation domain 200. Thus, the switching of the transmission direction is realized, and at this time, the transmission direction of the signal in the antenna coupling device is that the receiving side isolation domain 200 transmits the signal to the transmitting side isolation domain 100.

[0071] The first signal refers to a signal that the signal sending module needs to send to the signal receiving module 500 .

[0072] The reception abnormal signal may be an undervoltage abnormal signal and / or an overcurrent abnormal signal. The reception abnormal signal indicates that the signal receiving module 500 corresponding to the receiving side isolation domain 200 has an abnormality. When the reception abnormal signal includes an undervoltage abnormal signal, it indicates that the signal receiving module 500 has an undervoltage abnormality. When the reception abnormal signal includes an overcurrent abnormal signal, it indicates that the signal receiving module 500 has an overcurrent. At this time, the signal receiving module 500 cannot receive the signal normally. Therefore, in the case where the signal receiving module 500 cannot receive the signal normally, the receiving side isolation domain 200 needs to inform the transmitting side isolation domain 100 that the signal receiving module 500 cannot receive the signal normally at present, so that the signal transmitting module 400 stops sending the first signal to the transmitting side isolation domain 100 in time, and the transmitting side isolation domain 100 stops sending the first signal to the receiving side isolation domain 200 in time. Avoid invalid transmission signals.

[0073] For a better understanding of this embodiment, refer to Figure 2 , where A1 refers to a schematic diagram of a signal being sent from the transmitting side isolation domain 100 to the receiving side isolation domain 200, and A2 refers to a schematic diagram of a signal being sent from the receiving side isolation domain 200 to the transmitting side isolation domain 100. It can be considered that A1 is the initial state of the antenna coupling isolation device, and A2 is a schematic diagram of the first switch SW1 and the second switch SW2 being switched when the signal receiving module 500 of the receiving side isolation domain 200 is abnormal. Wherein, x1 is the first end of the first switch SW1, x2 is the second end of the first switch SW1, and x3 is the third end of the first switch SW1; y1 is the first end of the second switch SW2, y2 is the second end of the second switch SW2, and y3 is the third end of the second switch SW2. A1 represents an antenna coupling isolation device in which the signal transmission direction is from the transmitting side isolation domain to the receiving side isolation domain, the first end and the third end of the first switch SW1 are closed, the first antenna ANT1 is connected to the first transmitting end TX1, the second end and the third end of the second switch SW2 are closed, and the second antenna ANT2 is connected to the second receiving end RX2. When an abnormality occurs in the signal receiving module 500, after the first switching switch SW1 and the second switching switch SW2 are switched, A2 indicates an antenna coupling isolation device in which the signal transmission direction is from the receiving side isolation domain to the transmitting side isolation domain, and the second end and the third end of the first switching switch SW1 are closed, so that the first antenna ANT1 is connected to the first receiving end RX1, and the first end and the third end of the second switching switch SW2 are closed, so that the second antenna ANT2 is connected to the second transmitting end TX2.

[0074] There are a transmitting side isolation domain 100 and a receiving side isolation domain 200 in the antenna coupling isolation device. The transmitting side isolation domain 100 and the receiving side isolation domain 200 are connected through an isolation barrier 300. Since the transmitting side isolation domain 100 includes a first receiving end RX1, a first transmitting end TX1, a first switching switch SW1 and a first antenna ANT1, the first antenna ANT1 is supported in the transmitting side isolation domain 100 to switch between the first receiving end RX1 and the first transmitting end TX1, so that the transmitting side isolation domain 100 can both send and receive signals.

[0075] Since the receiving side isolation domain 200 includes a second receiving end RX2, a second transmitting end TX2, a second switching switch SW2 and a second antenna ANT2, the receiving side isolation domain 200 supports the second antenna ANT2 to switch connection between the second receiving end RX2 and the second transmitting end TX2, so that the receiving side isolation domain 200 can both receive signals and send signals.

[0076] Further, in the embodiment of the present application, the transmitting side isolation domain 100 can send a first signal to the receiving side isolation domain 200, and when the receiving side isolation domain 200 detects a reception abnormality signal, the second antenna ANT2 is switched to be connected to the second transmitting end TX2 through the second switching switch SW2, so that the receiving side isolation domain 200 can send the reception abnormality signal to the transmitting side isolation domain 100; and when the transmitting side isolation domain 100 detects that the second antenna ANT2 in the receiving side isolation domain 200 is switched to be connected to the second transmitting end TX2, the first antenna ANT1 is switched to be connected to the second receiving end RX2 through the first switching switch SW1, so as to receive the reception abnormality signal sent by the receiving side isolation domain 200, and stop sending the first signal to the receiving side isolation domain 200;

[0077] Thus, the transmitting side isolation domain 100 can send the first signal to the receiving side isolation domain 200 through the first antenna ANT1 and the second antenna ANT2, and the receiving side isolation domain 200 can also send the reception abnormality signal to the transmitting side isolation domain 100 through the first antenna ANT1 and the second antenna ANT2, so as to realize the variable direction transmission between the transmitting side isolation domain 100 and the receiving side isolation domain 200. That is, in this embodiment, even if the transmitting side isolation domain 100 only includes the first antenna ANT1 and the receiving side isolation domain only includes the second antenna ANT2, the first antenna ANT1 and the second antenna ANT2 can also realize the two-way variable transmission of the signal, so as to solve the problem that the single channel (there is a signal transmission channel between the first antenna ANT1 and the second antenna ANT2) can only perform one-way information transmission. And in the case of reception abnormality in the receiving side isolation domain 200, the transmitting side isolation domain 100 will also stop sending the first signal to the receiving side isolation domain 200, so as to avoid the invalid transmission of the signal between the transmitting side isolation domain 100 and the receiving side isolation domain 200, thereby solving the technical problem that the antenna isolation device can only transmit the signal in one direction.

[0078] Further, see Figure 3 In a feasible embodiment, the transmitting side isolation domain 100 further includes a first power detection module PD1 and a first logic control module 110, wherein the first power detection module PD1 is respectively connected to the first logic control module 110, the first switch SW1 and the first antenna ANT1, and the first logic control module 110 is respectively connected to the first transmitting end TX1 and the first receiving end RX1;

[0079] The first power detection module PD1 is used to detect the first power of the first antenna ANT1;

[0080] The first power detection module PD1 is also used to control the first switching switch SW1 to switch to the first receiving end RX1 when the first antenna ANT1 is connected to the first transmitting end TX1 through the first switching switch SW1 and the first power meets a preset attenuation condition, so as to connect the first receiving end RX1 and the first antenna ANT1 through the first switching switch SW1 when it is detected that the second antenna ANT2 switches to the second transmitting end TX2.

[0081] It should be noted that the first power can be used to describe the ability of the first antenna ANT1 to transmit signals. The larger the first power, the stronger the ability of the first antenna ANT1 to transmit signals. For example, the first power of the first antenna ANT1 can be divided into receiving power and transmitting power. When the first antenna ANT1 is connected to the first receiving end RX1, the first power refers to the receiving power. When the first antenna ANT1 is connected to the first transmitting end TX1, the first power refers to the transmitting power. The power of the antenna will be affected by the environment. For example, when the first antenna ANT1 is connected to the first transmitting end TX1, the first antenna ANT1 transmits signals to the outside. If the second antenna ANT2 also transmits signals to the outside, there is interference between the first antenna ANT1 and the second antenna ANT2, and the first power of the first antenna ANT1 is attenuated.

[0082] When the first power attenuation is detected, it indicates that the transmission state of the second antenna ANT2 of the current receiving side isolation domain 200 is the same as the transmission state of the first antenna ANT1 of the receiving side isolation domain 200. The transmission state refers to the transmission direction of the antenna, and the transmission state can be divided into a transmitting state and a receiving state. Specifically, when the first power attenuation occurs, the second antenna ANT2 and the first antenna ANT1 are both in the transmitting state or both in the receiving state.

[0083] In this embodiment, the preset attenuation condition represents the attenuation of the first power. The preset attenuation condition includes that the first power is less than a preset attenuation threshold. The preset attenuation threshold can be determined based on actual conditions.

[0084] When the first transmitting end TX1 is connected to the first antenna ANT1 and the first power attenuation is detected, the first power detection module PD1 controls the first switching switch SW1 to switch to the first receiving end RX1, that is, the second end and the third end of the first switching switch SW1 are controlled to be closed, so that the first receiving end RX1 is connected to the first antenna ANT1, so that the transmitting side isolation domain 100 can receive the reception abnormality signal sent by the receiving side isolation domain 200, thereby facilitating timely stopping of sending the first signal to the receiving side isolation domain 200.

[0085] In other embodiments, when the first antenna ANT1 is connected to the first transmitting terminal TX1 through the first switching switch SW1, and the first power meets the preset attenuation condition, and when the first power detection module PD1 detects the attenuation of the first power, the first switching switch SW1 may be controlled by the first logic control module 110 to switch and connect to the first receiving terminal RX1. For example, the first logic control module 110 may send a switch disconnection instruction to the first transmitting terminal TX1 to control the disconnection between the first transmitting terminal TX1 and the first antenna ANT1, and may send a switch closing instruction to the first receiving terminal RX1 to control the establishment of a connection between the first receiving terminal RX1 and the first antenna ANT1.

[0086] This embodiment detects the first power to promptly switch the first antenna ANT1 to the first receiving end RX1 to stop sending the first signal to the receiving side isolation domain 200, and promptly receive the reception abnormality signal sent by the receiving side isolation domain 200, so that the signal transmitting end can promptly stop sending the first signal to the transmitting side isolation domain 100.

[0087] Furthermore, in a feasible embodiment, the first logic control module 110 is further used to store a first connection flag flag1 of the transmitting side isolation domain 100;

[0088] The first logic control module 110 is further used to control the first receiving end RX1 to operate in low power consumption mode when the first connection mark is a transmitting connection mark, and is further used to control the first transmitting end TX1 to operate in low power consumption mode when the first connection mark is a receiving connection mark.

[0089] It should be noted that the first connection flag may be expressed as flag1 in the first logic control module 110, and the first connection flag includes a transmission connection flag and a reception connection flag, the transmission connection flag indicates that the first antenna ANT1 is connected to the first transmission end TX1, and the reception connection flag indicates that the first antenna ANT1 is connected to the first reception end RX1. The transmission connection flag of the first antenna ANT1 may be expressed as flag1=1 in the first logic control module 110, and the reception connection flag of the first antenna ANT1 may be expressed as flag1=0 in the first logic control module 110.

[0090] When the first connection state is a transmitting connection mark, it means that the first receiving end RX1 of the transmitting side isolation domain 100 does not need to receive a signal, and the first receiving end RX1 can be controlled to enter a low power consumption mode to reduce the energy consumption of RX1. For example, the first receiving end RX1 can be controlled to enter a dormant state to control the first receiving end RX1 to enter a low power consumption mode, etc., which is not specifically limited in this embodiment. When the first connection state is a receiving connection mark, it means that the first transmitting end TX1 of the transmitting side isolation domain 100 does not need to receive a signal, and the first transmitting end TX1 can be controlled to enter a low power consumption mode to reduce the energy consumption of TX1.

[0091] In this embodiment, in the antenna coupling device, the initial value of the first connection flag of the transmitting side isolation domain 100 is flag1=1, that is, the initial first connection flag is a transmitting connection flag. The transmitting side isolation domain 100 can determine whether the first antenna ANT1 is connected to the first receiving end RX1 or the first transmitting end TX1 through the first connection flag. Therefore, when the first power detection module PD1 detects the first power attenuation, the closed state of the first switching switch SW1 can be adjusted based on the first connection mark; for example, in the case of the first power attenuation, if the first connection mark is a transmitting connection mark, it means that the first antenna ANT1 is connected to the first transmitting terminal TX1 before the first power attenuation, and at this time, the closed state of the first switching switch SW1 can be adjusted to the second end and the third end of the first switching switch SW1 are closed, so that the first antenna ANT1 is connected to the first receiving terminal RX1 through the first switching switch SW1; if in the case of the first power attenuation, if the first connection mark is a receiving connection mark, it means that the first antenna ANT1 is connected to the first receiving terminal RX1 before the first power attenuation, and at this time, the closed state of the first switching switch SW1 can be adjusted to the first end and the third end are closed, so that the first antenna ANT1 is connected to the first transmitting terminal TX1 through the first switching switch SW1.

[0092] Further, see Figure 3 In a feasible embodiment, the receiving side isolation domain 200 further includes a second power detection module PD2 and a second logic control module 210, wherein the second power detection module PD2 is respectively connected to the second logic control module 210, the second switch SW2 and the second antenna ANT2, and the second logic control module 210 is respectively connected to the second transmitting end TX2 and the second receiving end RX2;

[0093] The second power detection module PD2 is used to detect the second power of the second antenna ANT2;

[0094] The second power detection module PD2 is also used to control the second switching switch SW2 to switch to the second receiving end RX2 when the second antenna ANT2 is connected to the second transmitting end TX2 through the second switching switch SW2 and the second power meets the preset attenuation condition, and connect the second receiving end RX2 and the second antenna ANT2 through the second switching switch SW2 to restore the reception of the first signal sent by the transmitting side isolation domain 100.

[0095] It should be noted that the second power can be used to describe the ability of the second antenna ANT2 to transmit signals. The larger the second power, the stronger the ability of the second antenna ANT2 to transmit signals. For example, the second power of the second antenna ANT2 can be divided into receiving power and transmitting power. When the second antenna ANT2 is connected to the second receiving end RX2, the second power refers to the receiving power. When the second antenna ANT2 is connected to the second transmitting end TX2, the second power refers to the transmitting power. The power of the antenna will be affected by the environment. For example, when the second antenna ANT2 is connected to the second receiving end RX2, and the first antenna ANT1 is also connected to the first receiving end RX1, the second antenna ANT2 is receiving signals and the first antenna ANT1 is receiving signals. Then there is interference between the second antenna ANT2 and the first antenna ANT1, and the second power of the second antenna ANT2 is attenuated.

[0096] When the second power attenuation is detected, it indicates that the transmission state of the second antenna ANT2 of the current receiving side isolation domain 200 is the same as the transmission state of the first antenna ANT1 of the transmitting side isolation domain 100. The transmission state refers to the transmission direction of the antenna, and the transmission state can be divided into a transmitting state and a receiving state. Specifically, when the second power attenuation occurs, the second antenna ANT2 and the first antenna ANT1 are both in the transmitting state or both in the receiving state.

[0097] The preset attenuation condition may also represent the attenuation of the second power. The preset attenuation condition includes that the second power is less than a preset attenuation threshold. The preset attenuation threshold may be determined based on actual conditions.

[0098] When the second transmitting end TX2 is connected to the second antenna ANT2 and the second power attenuation is detected, the second power detection module PD2 controls the second switching switch SW2 to switch and connect to the second receiving end RX2, that is, the second end and the third end of the second switching switch SW2 are controlled to be closed, so that the second receiving end RX2 is connected to the second antenna ANT2, so that the receiving side isolation domain 200 can receive the reception abnormality signal sent by the transmitting side isolation domain 100, and then when the signal receiving module 500 of the receiving side isolation domain 200 returns to normal, the first signal sent by the transmitting side isolation domain 100 is restored to receive.

[0099] In other embodiments, when the second antenna ANT2 is connected to the second transmitting end TX2 through the second switching switch SW2 and the second power satisfies the preset attenuation condition, the second switching switch SW2 may also be controlled by the second logic control module 210 to switch and connect to the second receiving end RX2. For example, the second logic control module 210 may send a switch disconnection instruction to the second transmitting end TX2 to control the disconnection between the second transmitting end TX2 and the second antenna ANT2, and may send a switch closing instruction to the second receiving end RX2 to control the establishment of a connection between the second receiving end RX2 and the second antenna ANT2.

[0100] This embodiment detects the second power to timely switch the second antenna ANT2 to the second receiving end RX2 and promptly restore the first signal received by the transmitting side isolation domain 100, so that normal communication between the transmitting side isolation domain 100 and the receiving side isolation domain 200 can be restored.

[0101] Further, in a feasible embodiment, the second logic control module 210 is further used to store a second connection flag of the receiving side isolation domain 200;

[0102] The second logic control module 210 is further used to control the second receiving end RX2 to operate in low power consumption mode when the second connection mark is a transmitting connection mark, and is further used to control the second transmitting end TX2 to operate in low power consumption mode when the second connection mark is a receiving connection mark.

[0103] It should be noted that the second connection flag may be expressed as flag2 in the second logic control module 210, the transmission connection flag indicates that the second antenna ANT2 is connected to the second transmitting end TX2, and the reception connection flag indicates that the second antenna ANT2 is connected to the second receiving end RX2. The transmission connection flag of the second antenna ANT2 may be expressed as flag2=1 in the second logic control module 210, and the reception connection flag of the second antenna ANT2 may be expressed as flag2=0 in the second logic control module 210.

[0104] When the second connection mark is a transmission connection mark, it means that the second receiving end RX2 of the receiving side isolation domain 200 does not need to receive a signal, and the second receiving end RX2 can be controlled to enter a low power consumption mode to reduce the energy consumption of RX2. When the second connection mark is a reception connection mark, the second transmitting end TX2 can also be controlled to enter a low power consumption mode to reduce the energy consumption of TX2. For example, the second receiving end RX2 can be controlled to enter a sleep mark to control the second receiving end RX2 to enter a low power consumption mode, etc., which is not specifically limited in this embodiment.

[0105] In this embodiment, in the antenna coupling device, the initial value of the second connection flag of the receiving side isolation domain 200 is flag2=0, that is, the initial second connection flag is represented as the receiving connection flag, and the receiving side isolation domain 200 can determine whether the second antenna ANT2 is connected to the second receiving end RX2 or the second transmitting end TX2 through the second connection flag. Therefore, when the second power detection module PD2 detects the second power attenuation, the closing mark of the second switching switch SW2 can be adjusted based on the second connection mark; for example, in the case of the second power attenuation, if the second connection mark represented by the second connection mark is a transmitting end connection mark, it means that before the second power attenuation, the second antenna ANT2 is connected to the second transmitting end TX2, and at this time, the closing mark of the second switching switch SW2 can be adjusted to the second end and the third end of the second switching switch SW2 are closed, so that the second antenna ANT2 is connected to the second receiving end RX2 through the second switching switch SW2; if in the case of the second power attenuation, if the second connection mark represented by the second connection mark is a receiving end connection mark, it means that before the second power attenuation, the second antenna ANT2 is connected to the second receiving end RX2, and at this time, the closing mark of the second switching switch SW2 can be adjusted to the first end and the third end are closed, so that the second antenna ANT2 is connected to the second transmitting end TX2 through the second switching switch SW2.

[0106] Furthermore, in a feasible embodiment, the transmitting side isolation domain 100 is also used to switch the first antenna ANT1 to the first transmitting end TX1 through the first switching switch SW1 when receiving a normal recovery signal sent by the receiving side isolation domain 200.

[0107] It should be noted that when the signal receiving module 500 of the receiving side isolation domain 200 returns to normal, the signal receiving module 500 can send a return to normal signal to the receiving side isolation domain 200, and the receiving side isolation domain 200 then sends a return to normal signal to the transmitting side isolation domain 100. When the receiving side isolation domain 200 receives the return to normal signal, the receiving side isolation domain will switch the first antenna ANT1 to the first transmitting terminal TX1 through the first switching switch SW1, that is, control the first end and the third end of the first switching switch SW1 to be closed, so that the first transmitting terminal TX1 is connected to the first antenna ANT1. Thereby, the transmitting side isolation domain 100 resumes transmission, so as to be able to send the first signal to the receiving side isolation domain 200.

[0108] Further, see Figure 4 and Figure 5In a feasible embodiment, the first logic control module 110 further includes a first interface unit 112, the first interface unit 112 includes a first data interface, a first clock interface, a first abnormal flag interface RDY1 and a second abnormal flag interface FLT1, the first data interface and the first clock interface are used to receive the first signal of the signal transmission module 400 connected to the transmitting side isolation domain 100;

[0109] The first abnormal flag interface RDY1 and the second abnormal flag interface FLT1 are used to transmit the reception abnormality signal received by the second receiving end RX2 to the signal transmission module 400, so as to prompt the signal transmission module 400 to stop inputting the first signal to the transmitting side isolation domain 100;

[0110] The second logic control module 210 also includes a second interface unit 212, which includes a second clock interface, a second data interface, a third abnormal flag interface RDY2 and a fourth abnormal flag interface FLT2, and the second data interface and the second clock interface are used to send the first signal received by the receiving side isolation domain 200 to the signal receiving module 500 connected to the receiving side isolation domain 200;

[0111] The third abnormal flag interface RDY2 and the fourth abnormal flag interface FLT2 are used to receive the reception abnormality signal of the second isolation control module connected to the reception side isolation domain 200, and transmit the reception abnormality signal to the second transmitting terminal TX2, so as to send the reception abnormality signal to the transmitting side isolation domain 100 through the second transmitting terminal TX2 and the second antenna ANT2.

[0112] It should be noted that you can refer to Figure 4 , the receiving side isolation domain 200 is connected to the signal receiving module 500, and the transmitting side isolation domain 100 is connected to the signal transmitting module 400. The reception abnormality refers to the abnormality of the signal receiving module 500. When the signal receiving module 500 is abnormal, a reception abnormality signal will be generated and sent to the signal receiving module 500. When the signal receiving module 500, the signal transmitting module 400 and the antenna coupling isolation device are normal, the signal transmitting module 400 can send the first signal to the receiving side isolation domain 200 through the transmitting side isolation domain 100, and the receiving side isolation domain 200 sends the first signal to the signal receiving module 500. The antenna coupling isolation device includes the receiving side isolation domain 200, the transmitting side isolation domain 100 and the isolation fence 300. The signal transmitting module 400 and the signal receiving module 500 are respectively connected to the antenna coupling isolation device.

[0113] It should also be noted that, referring to Figure 5The first logic control module 110 may be a logic control chip, etc. The first logic control module 110 includes a first interface unit 112 and may also include a first control unit 111. The first interface unit 112 includes multiple interfaces of the first logic control module 110. The signal transmission module 400 is connected to the first logic control module 110 through the first interface unit 112, so that the signal transmission module 400 is connected to the transmission side isolation domain 100. The first data interface and the first clock interface are used to receive the first signal sent by the signal transmission module 400. The first data interface is the interface corresponding to the DATA pin in the first logic control module 110, and the first clock interface is the interface corresponding to the CLK pin in the first logic control module 110. That is, the first data interface is Figure 5 The first clock interface is DATA1 (IN+) shown in Figure 5 CLK1 (IN-) shown in . The first data interface DATA1 (IN+) and the first clock interface CLK1 (IN-) are configured as input interfaces of the first logic control module 110, so that there is no need to add additional input interfaces to the first logic control module 110, which can reduce the number of pins in the first logic control module 110, thereby reducing the packaging cost of the antenna coupling isolation device. Since the number of pins determines the cost and difficulty of packaging the antenna coupling isolation device, minimizing the number of pins during circuit design can reduce the cost of the antenna coupling isolation device and reduce the design difficulty.

[0114] The first control unit 111 is used to transmit the first signal input by the first clock interface and the first data interface to the first transmitting end TX1, etc. The first control unit 111 is also used to store the first connection flag. For example, the first control unit 111 may also include an NVM (Non-Volatile Memory) subunit, and the first connection flag is stored in the NVM subunit.

[0115] The received abnormal signal may include an undervoltage abnormal signal and an overcurrent abnormal signal, wherein the first abnormal flag interface RDY1 may transmit the undervoltage abnormal signal received by the first receiving end RX1 to the signal transmitting module 400, to prompt the signal receiving module 500 that there is an undervoltage abnormality, and the signal transmitting module 400 needs to stop sending the first signal; the second abnormal flag interface FLT1 may transmit the overcurrent and other abnormal signals received by the first receiving end RX1 to the signal transmitting module 400, to prompt the signal receiving module 500 that there is an overcurrent abnormality, and the signal transmitting module 400 needs to stop sending the first signal. In other embodiments, the first abnormal flag interface RDY1 may also represent the ready state of the transmitting side isolation domain 100, so that after the transmitting side isolation domain 100 is ready, the signal transmitting module 400 may send the first signal to the receiving side isolation domain 200 through the transmitting side isolation domain 100; the ready state is used to describe whether the transmitting side isolation domain 100 can currently communicate normally. When the transmitting side isolation domain 100 can currently communicate normally, it means that the transmitting side isolation domain 100 is ready and can communicate.

[0116] The first interface unit 112 further includes a first power interface VDD1 and a first ground interface GND1, so as to provide power for the transmitter side isolation domain 100. The first interface unit 112 is symmetrical with the second interface unit 212, the first interface unit 112 includes 6 pins, the second interface unit 212 also includes 6 pins, and the second interface unit 212 also includes a second power interface VDD2 and a second ground interface GND2.

[0117] The interfaces of the first interface unit 112 and the second interface unit 212 are consistent at the hardware level, that is, the first interface unit 112 and the second interface unit 212 both include a power supply interface and a ground interface, and the functions implemented by the first data interface, the first clock interface, the first exception flag interface and the second exception flag interface in the first interface unit 112 can be obtained by configuring the interface of the logic control chip where the first interface unit 112 is located (for example, inputting interface input configuration information into the logic control chip, etc., the interface input configuration information includes configuring the first data interface and the first clock interface as input functions, configuring the first exception flag interface RDY1 and the second exception flag interface FLT1 to be used for transmitting the reception exception signal received by the second receiving end RX2 to the signal transmission module 400, etc.). The functions implemented by the second clock interface, the second data interface, the third exception flag interface and the fourth exception flag interface in the second interface unit 212 can be obtained by configuring the interface of the logic control chip where the second interface unit 212 is located (for example, inputting interface output configuration information into the logic control chip, etc., receiving the configuration information includes configuring the second data interface and the second clock interface as output functions, configuring the third exception flag interface RDY2 and the fourth exception flag interface FLT2 to receive a reception exception signal of the second isolation control module connected to the receiving side isolation domain 200, and transmitting the reception exception signal to the second transmitting end TX2, etc.). Therefore, in this embodiment, for the same logic control chip, each interface in the logic control chip can be configured as a first interface unit or a second interface unit (for example, if configuration information is input to the input interface of the logic control chip, then each interface of the logic control chip can be configured as a first interface unit, and if configuration information is output to the input interface of the logic control chip, then each interface of the logic control chip can be configured as a second interface unit), thereby realizing the reuse of the logic control chip, thereby reducing the design cost of the transmission side isolation domain and the interface side isolation domain, and there is no need to design a chip for the transmission side isolation domain or the reception side isolation domain separately. The packaging cost of the antenna coupling isolation device can be reduced, and the design difficulty of the antenna coupling isolation device can also be reduced.

[0118] The second logic control module 210 may be a logic control chip, etc. The second logic control module 210 includes a second interface unit 212 and may also include a second control unit 211. The second interface unit 212 includes multiple interfaces of the second logic control module 210. The signal receiving module 500 is connected to the second logic control module 210 through the second interface unit 212, so that the signal receiving module 500 is connected to the receiving side isolation domain 200. The second data interface and the second clock interface are used to send a first signal to the signal receiving module 500. The second data interface is the DATA pin in the second logic control module 210, and the second clock interface is the CLK pin in the second logic control module 210. That is, the first data interface is Figure 5 The first clock interface is DATA2 (OUT+) shown in Figure 5 CLK2 (OUT-) shown in . The first data interface DATA2 (OUT+) and the first clock interface CLK2 (OUT-). The second data interface and the second clock interface are configured as input interfaces of the second logic control module 210, so that there is no need to add additional input interfaces to the second logic control module 210, which can reduce the number of pins in the second logic control module 210, thereby reducing the packaging cost of the antenna coupling isolation device. The second control unit 211 is used to output the first signal received by the second receiving end RX2 to the signal receiving module 500 through the second clock interface and the second data interface. The second control unit 211 is also used to store a second connection flag. For example, the second control unit 211 can also include an NVM subunit, and the second connection flag is stored in the NVM subunit.

[0119] The third abnormal flag interface RDY2 can transmit the undervoltage abnormal signal sent by the signal receiving module 500 to the second transmitting terminal TX2, and send it to the transmitting side isolation domain 100 through the second transmitting terminal TX2. The fourth abnormal flag interface FLT2 can transmit the overcurrent abnormal signal sent by the signal receiving module 500 to the second transmitting terminal TX2, and send it to the transmitting side isolation domain 100 through the second transmitting terminal TX2. In other embodiments, the third abnormal flag interface RDY2 can also represent the ready state of the receiving side isolation domain 200, so that after the receiving side isolation domain 200 is ready, the signal receiving module 500 can receive the first signal of the transmitting side isolation domain 100 through the receiving side isolation domain 200; the ready state can be used to describe whether the receiving side isolation domain 200 can currently communicate normally. When the receiving side isolation domain 200 can currently communicate normally, it means that the receiving side isolation domain 200 is ready and can communicate.

[0120] Reference Figure 5 , Figure 5This is a schematic diagram of the internal circuit connection of the antenna coupling isolation device. The transmitting side isolation domain 100 also includes a first protection unit UVLO1 and a first voltage stabilizing unit LDO1. The first protection unit UVLO1 is used to protect the first control unit 111 to ensure that the first control unit 111 will not work when the input voltage is lower than a preset safety threshold. The first voltage stabilizing unit LDO1 is used to provide a stable voltage for the first control unit 111.

[0121] The receiving side isolation domain 200 also includes a second protection unit UVLO2 and a second voltage stabilizing unit LDO2. The second protection unit UVLO2 is used to protect the second control unit 211 to ensure that the second control unit 211 will not work when the input voltage is lower than a preset safety threshold. The second voltage stabilizing unit LDO2 is used to provide a stable voltage for the second control unit 211.

[0122] Moreover, this embodiment can also be applied to a magnetic coupling isolation device, that is, single-channel variable-direction signal transmission can also be realized in the magnetic coupling isolation device. For example, the difference between the magnetic coupling isolation device and the antenna coupling isolation device is that the magnetic coupling isolation device realizes signal reception and transmission through a magnetic coupling coil, and the antenna coupling isolation device realizes signal reception and transmission through an antenna. The method of realizing single-channel variable-direction transmission in the magnetic coupling isolation device is the same as that of the antenna coupling isolation device, which will not be elaborated here. For example, the magnetic coupling isolation device can also be divided into a magnetic coupling transmitting side isolation domain and a magnetic coupling receiving side isolation domain. The magnetic coupling coil in the magnetic coupling transmitting side isolation domain is connected to the first switching switch, and the magnetic coupling coil in the magnetic coupling receiving side isolation domain is connected to the second switching switch. When the magnetic coupling receiving side isolation domain detects an abnormal reception signal, the magnetic coupling coil of the magnetic coupling receiving side isolation domain can also be switched from the second receiving end to the second transmitting end. At this time, the power change of the magnetic coupling coil in the magnetic coupling transmitting side isolation domain can be detected, such as attenuation, and then the magnetic coupling coil in the magnetic coupling transmitting side isolation domain will also be switched from the first transmitting end to the first receiving end to realize the change of signal transmission direction.

[0123] Reference Figure 5 The transmitting side isolation domain 100 also includes a trigger C and a buffer Z, and the receiving side isolation domain 200 also includes a trigger C and a buffer Z; the buffer is used to enhance the output driving capability, and the trigger is used to ensure the reliability of the input.

[0124] Reference Figure 5In the transmitter side isolation domain 100, the first terminal and the third terminal of the first switch SW1 are closed, so that the first transmitter terminal TX1 is connected to the first antenna ANT1. When the first transmitter terminal TX1 is connected to the first antenna ANT1, the first transmitter terminal TX1 and the trigger start running, while the buffer and the first receiving terminal RX1 do not need to start running. Therefore, in this case, the buffer and the first receiving terminal RX1 in the transmitter side isolation domain 100 are displayed in gray. Figure 5 The gray component indicates that the component does not need to be started and operated at present. In the receiving side isolation domain 200, the second end and the third end of the second switch SW2 are closed, so that the second receiving end RX2 is connected to the second antenna ANT2. When the second receiving end RX2 is connected to the second antenna ANT2, the second receiving end RX2 and the buffer are started and operated, while the trigger, the second protection unit and the second transmitting end TX2 in the receiving side isolation domain 200 do not need to be started and operated. Therefore, in this case, the trigger, the second protection unit and the second transmitting end TX2 in the transmitting side isolation domain 100 are displayed in gray.

[0125] In other embodiments, when the first receiving end RX1 in the transmitting side isolation domain 100 is connected to the first antenna ANT1, the trigger and the first transmitting end TX1 will not start running, and the buffer and the first receiving end RX1 will start running in the transmitting side isolation domain 100. When the second receiving end RX2 in the receiving side isolation domain 200 is connected to the second antenna ANT2, the trigger and the second receiving end RX2 will not start running in the receiving side isolation domain 200, and the buffer and the second receiving end RX2 will start running.

[0126] Reference Figure 5 , Figure 5 The first power detection module PD1 shown can also be connected to the first receiving end RX1 and the first transmitting end TX1. In other embodiments, the first receiving end RX1 and the first transmitting end TX1 can also be controlled separately by the first power detection module PD1. For example, after the first power detection module PD1 detects the first power attenuation and the first switching switch SW1 is switched, when the first antenna ANT1 is connected to the first receiving end RX1, the first power detection module PD1 can control the first transmitting end TX1 to enter the low power consumption mode, and can also control the first receiving end RX1 to start operation, etc.

[0127] Figure 5The second power detection module PD2 shown can also be connected to the second receiving end RX2 and the second transmitting end TX2. In other embodiments, the second receiving end RX2 and the second transmitting end TX2 can also be controlled by the second power detection module PD2. For example, after the second power detection module PD2 detects the second power attenuation and the second switching switch SW2 is switched, the second antenna ANT2 is connected to the second transmitting end TX2. The second power detection module PD2 can control the second receiving end RX2 to enter the low power consumption mode, and can also control the second transmitting end TX2 to start running. Figure 5 The direction of the arrow indicates the direction of signal transmission.

[0128] In this embodiment, the first antenna ANT1 and the second antenna ANT2 are both single-group antennas, that is, there is only one group of antennas in the transmitting side isolation domain 100, and there is only one group of antennas in the receiving side isolation domain 200. This avoids the problem of poor signal transmission caused by crosstalk between multiple groups of antennas. For example, you can refer to Figure 5 and Figure 6 ,contrast Figure 5 and Figure 6 , Figure 6 This is the circuit connection diagram when there are two sets of antennas in the same isolation domain. Figure 5 FIG. 1 is a schematic diagram of the circuit connection of the transmitting side isolation domain 100 and the receiving side isolation domain 200 in this embodiment. Figure 6 In the transmitting side isolation domain 100, there are two groups of antennas, namely, a first transmitting antenna T1 and a first receiving antenna R1. The first transmitting antenna T1 is connected to the first transmitting end TX1, and the first receiving antenna R1 is connected to the first receiving end RX1. There are also two groups of antennas, namely, a second transmitting antenna T2 and a second receiving antenna R2, in the receiving side isolation domain 200. The second transmitting antenna T2 is connected to the second transmitting end TX2, and the second receiving antenna R2 is connected to the second receiving end RX2. Figure 6 The signal is sent from the transmitting side isolation domain 100 to the receiving side isolation domain 200. When the signal receiving module 500 of the receiving side isolation domain 200 is abnormal, the receiving side isolation domain 200 will send a reception abnormality signal to the transmitting side isolation domain 100. Figure 6 There are two sets of antennas in the transmitting side isolation domain 100 and the receiving side isolation domain 200. T1 in the transmitting side isolation domain 100 will generate crosstalk with T2, and R2 will generate crosstalk with R1, thereby affecting the accuracy of signal transmission and reducing the accuracy of signal transmission. Figure 6 Each isolation domain in the system uses two sets of antennas, which is equivalent to two signal transmission channels between the isolation domain on the transmitting side and the isolation domain on the receiving side. Figure 6 The isolation device shown in increases the cost of signal transmission. Figure 5 , Figure 5The transmitting side isolation domain 100 and the receiving side isolation domain 200 each have only one group of antennas. Initially, the first antenna ANT1 is connected to the first transmitting terminal TX1, and the second antenna ANT2 is connected to the second receiving terminal RX2, so that the transmitting side isolation domain 100 and the receiving side isolation domain 200 can communicate normally. When the receiving side isolation domain 200 wants to transmit a signal to the transmitting side isolation domain 100, the second antenna ANT2 can be connected to the second transmitting terminal TX2, so that interference is generated between the first antenna ANT1 and the second antenna ANT2, and the first power of the first antenna ANT1 is attenuated. When the transmitting side isolation domain 100 detects the first power attenuation, it can connect the first antenna ANT1 to the first receiving terminal RX1, so that the receiving side isolation domain 200 transmits a signal to the transmitting side isolation domain 100. This ensures the accuracy of signal transmission. Therefore, this embodiment adopts Figure 5 The antenna coupling isolation device shown realizes signal transmission, which can ensure accurate transmission of the signal. In this embodiment, only one set of antennas (first antenna and second antenna) is needed, thereby ensuring accurate transmission of the signal at a low cost.

[0129] The present application also provides an antenna coupling isolation method, which is applied to the above-mentioned antenna coupling isolation device. Please refer to Figure 7 , and combined Figures 1 to 6 The antenna coupling isolation method includes steps S10 to S20:

[0130] Step S10, when it is detected that the first power of the transmitting side isolation domain meets the preset attenuation condition and the first connection mark of the transmitting side isolation domain is a transmitting connection mark, control the first switching switch in the transmitting side isolation domain to switch from the first transmitting end to the first receiving end, so that when the second antenna of the receiving side isolation domain is switched to the second transmitting end, the first antenna is switched to the first receiving end through the first switching switch;

[0131] It should be noted that, in this embodiment, for the sake of convenience, the initial signal transmission direction in the antenna coupling isolation device is that the transmitting side isolation domain sends a signal to the receiving side isolation domain. Therefore, in the antenna coupling isolation device, the initial connection state of the first antenna and the second antenna is: the first antenna is connected to the first transmitting end, the second antenna is connected to the second receiving end, the first connection state in the transmitting side isolation domain is the transmitting connection state, and the second connection state in the receiving side isolation domain is the receiving connection state, for example, flag1=1, flag2=0.

[0132] When there is an abnormality in the signal receiving module of the isolation domain on the receiving side, the isolation domain on the receiving side will detect the abnormal reception signal. For example, the isolation domain on the receiving side can detect whether there is a level jump in the first abnormal flag interface and the second abnormal flag interface, etc. When it is detected that there is a level jump in the first flag interface and / or the second abnormal flag interface, it is determined that the isolation domain on the receiving side has detected the abnormal reception signal. At this time, the isolation domain on the receiving side will control the first end and the third end of the second switching switch to close to connect the second antenna and the second transmitting end.

[0133] Since the first antenna is also connected to the first transmitting end at this time, interference will occur between the first antenna and the second antenna, causing the first power of the first antenna to attenuate. Therefore, the first power of the first antenna detected by the transmitting side isolation domain can be obtained to detect whether the second transmitting end in the receiving side isolation domain is connected to the second antenna, so as to determine whether there is an abnormality in the signal receiving end corresponding to the receiving side isolation domain. When the second antenna in the receiving side isolation domain is connected to the second transmitting end, it means that the receiving side isolation domain needs to send a signal to the transmitting side isolation domain, indicating that there may be an abnormality in the signal receiving end.

[0134] Exemplarily, the first power detected by the first power detection module is acquired, and the first power detection module can detect the first power of the first antenna in real time.

[0135] It should be noted that when the first power does not meet the preset attenuation condition, it means that the first power is not attenuated and the second antenna is not yet connected to the second transmitting end. When the first power meets the preset attenuation condition, it means that the first power is attenuated and the second transmitting end is connected to the second antenna.

[0136] Exemplarily, when the first power is attenuated and the first connection mark is a transmission connection mark, the second end and the third end of the first switching switch are controlled to be closed, so that the second receiving end is connected to the first antenna, so that the transmitting side isolation domain can receive the reception abnormality signal sent by the receiving side isolation domain. In order to stop sending the first signal to the receiving side isolation domain in time. When the first connection mark is a transmission connection mark, it means that the transmitting side isolation domain is currently connected to the first transmitting end by the first antenna. At this time, when the first power attenuation is detected, it means that the first antenna needs to be switched to connect to the first receiving end.

[0137] Step S20, when the second transmitting end is connected to the second antenna and the first receiving end is connected to the first antenna, the first connection mark in the transmitting side isolation domain is adjusted to the receiving connection mark, and the second connection mark in the receiving side isolation domain is adjusted to the transmitting connection mark.

[0138] It should be noted that, since the first connection flag is stored in the first logic control module and the second connection flag is stored in the second logic control module, when the connection state of the first antenna and the connection state of the second antenna change, the first connection flag and the second connection flag also need to be adjusted to ensure the accuracy of the first connection flag and the second connection flag. The first connection flag and the second connection flag are adjusted only after the first switching switch is switched and the second switching switch is switched. Thus, the accuracy of the first connection flag and the second connection flag is ensured.

[0139] Since the moment when the first switching switch is completed is different from the moment when the second switching switch is completed, in this embodiment, the second switching switch is switched first. After the second switching switch is switched, the second antenna is connected to the second transmitting end. At this time, the second connection mark cannot be adjusted, because the second antenna is connected to the second transmitting end, and the first antenna is also connected to the first transmitting end. At this time, the first power and the second power of the first antenna will both be attenuated; and in the case of the second power attenuation, the second connection state of the second antenna will be adjusted to the opposite state of the second connection mark, that is, in the case of the second power attenuation, when the second connection mark is the transmission connection mark, the second antenna will be connected to the second receiving end, and when the second connection mark is the reception connection mark, the second antenna will be connected to the second transmitting end. However, since the second switching switch has completed the switching, so that the second antenna is connected to the second transmitting end, if the second connection mark is adjusted when the power is still attenuated, it may cause the second antenna to be connected to the second receiving end again; when the first switching switch and the second switching switch are both switched, there will be no interference between the first antenna and the second antenna, and thus no power attenuation will occur, so the first connection mark and the second connection mark can be adjusted after the first switching switch and the second switching switch are both switched. Ensure the accuracy of the switching connection between the first antenna and the second antenna.

[0140] Exemplarily, when the second transmitting end is connected to the second antenna and the first receiving end is connected to the first antenna, the first connection flag is adjusted to the receiving connection flag, and the second connection flag is adjusted to the transmitting connection flag. In other embodiments, a preset delay can be determined, and the first connection flag and the second connection flag are adjusted after the preset delay when the second switching switch starts switching. The preset delay can be determined based on actual conditions, but within the preset delay, it is necessary to ensure that both the first switching switch and the second switching switch complete the switching.

[0141] For a better understanding of this embodiment, refer to Figure 8 , Figure 8This is a schematic diagram of the change of the first power and the first connection mark, as well as the schematic diagram of the change of the second power and the second connection mark in this embodiment. When there is no signal transmission between the transmitting side isolation domain and the receiving side isolation domain, the first power is represented by Poff, and the second power is represented by Poff, and Poff is represented by 0. When the signal transmission between the transmitting side isolation domain and the receiving side isolation domain is normal (no power attenuation), the first power is represented by Pon, and the second power is also represented by Pon; when there is interference between the first antenna and the second antenna between the transmitting side isolation domain and the receiving side isolation domain, the first power is represented by Psw, and the second power is represented by Psw, and Psw is attenuated relative to Pon. Refer to Figure 8 , Figure 8 In the example, flag1 is at a relatively high level, which is indicated as flag1=1. At this time, the first antenna is connected to the first transmitting end. Flag1 is at a relatively low level, which is indicated as flag1=0. At this time, the first antenna is connected to the first receiving end. Flag2 is at a relatively high level, which is indicated as flag2=1. At this time, the second antenna is connected to the second transmitting end. Flag2 is at a relatively low level, which is indicated as flag2=0. At this time, the second antenna is connected to the second receiving end. Figure 8 It can be seen that when there is no signal transmission in the antenna coupling isolation device, the first power P1 and the second power P2 are both Poff, both are 0. After the signal transmission of the antenna coupling isolation device is turned on, the first antenna is connected to the first transmitting end, and the second antenna is connected to the second receiving end. At this time, the first connection flag flag1=1, and the second connection flag flag2=0. When the receiving side isolation domain detects that an abnormal signal is received, the second antenna of the receiving side isolation domain is connected to the second receiving end. At this time, the second power P1 is attenuated, and the first power P2 is also attenuated. For example Figure 8 As shown in , the second power P1 changes from black to red. The change from black to red indicates that the second antenna is switched from being connected to the second receiving end to being connected to the second transmitting end. However, since the first antenna in the isolation domain of the transmitting side has not switched the connection mode at this time, flag2 has not been modified at this time. When the first power P1 is restored from Psw to Pon, it indicates that the first antenna is switched from being connected to the first transmitting end to being connected to the first receiving end, so that there is no crosstalk between the first antenna and the second antenna, and it also indicates that the first switching switch has completed the switching, as shown in FIG. Figure 8 When the color of the first power P1 changes from black to red, it means that the first antenna has also completed the switching, so at this time, the connection between the first antenna and the second antenna has completed the switching (which is also equivalent to the first switching switch and the second switching switch completing the switching), so the first connection flag flag1 and the second connection flag flag2 can be adjusted, and flag1 is adjusted to flag1=0, and flag2 is adjusted to flag2=1, thereby completing the switching of the signal transmission direction. The accuracy of the signal transmission direction switching is guaranteed. Figure 8The ellipsis “...” shown in the figure indicates that there may be one or more waveforms, etc., and this embodiment does not impose any specific limitation on this.

[0142] Furthermore, in a feasible embodiment, after step S20, steps S21 and S22 are also included:

[0143] Step S21, when the transmitting side isolation domain receives the normal recovery signal sent by the receiving side isolation domain, controlling the first switching switch in the transmitting side isolation domain to switch from the first receiving end to the first transmitting end, so as to connect the first transmitting end and the first antenna through the first switching switch, and controlling the second switching switch in the receiving side isolation domain to switch from the second transmitting end to the second receiving end, so as to connect the second receiving end and the second antenna through the second switching switch;

[0144] It should be noted that when the signal receiving module of the receiving side isolation domain returns to normal, the signal receiving module can send a normal recovery signal to the receiving side isolation domain, and the normal recovery signal indicates that the signal receiving module can receive signals normally. The receiving side isolation domain can send the normal recovery signal to the transmitting side isolation domain, and the transmitting side isolation domain can send the normal recovery signal to the signal transmitting module, thereby prompting the signal transmitting module to send the first signal normally.

[0145] The transmitting side isolation domain can feed back the normal recovery signal to the signal transmitting module through the first abnormal flag interface and the second abnormal flag interface, and the signal receiving module can send the normal recovery signal to the receiving side isolation domain through the third abnormal flag interface and the fourth abnormal flag interface. For example, when the received abnormal signal includes an undervoltage abnormal signal, the transmitting side isolation domain can feed back the normal recovery signal to the signal transmitting module through the first abnormal flag interface, and the signal receiving module can send the normal recovery signal to the receiving side isolation domain through the third abnormal flag interface; when the received abnormal signal includes an overcurrent signal, the transmitting side isolation domain can feed back the normal recovery signal to the signal transmitting module through the second abnormal flag interface, and the signal receiving module can send the normal recovery signal to the receiving side isolation domain through the fourth abnormal flag interface.

[0146] When the transmitting side isolation domain receives the normal return signal sent by the receiving side isolation domain, it means that the transmitting side isolation domain can resume sending the first signal to the receiving side isolation domain, so it is necessary to connect the first antenna and the first transmitting end through the first switching switch, and connect the second antenna and the second transmitting end through the second switching switch.

[0147] As an example, when the transmitting side isolation domain receives a normal recovery signal, in the transmitting side isolation domain, the first receiving end can be controlled by the first logic control module to disconnect the first switching switch, and the first transmitting end and the third end of the first switching switch can be controlled to be closed, so that the first antenna is connected to the first transmitting end, and the receiving side isolation domain can also control the second transmitting end to be disconnected from the second switching switch through the second logic control module after sending the normal recovery signal to the transmitting side isolation domain, and control the second receiving end and the third end of the second switching switch to be closed, so that the second receiving end is connected to the second antenna.

[0148] As another example, when the transmitting side isolation domain receives a normal recovery signal, in the transmitting side isolation domain, the first logic control module can be used to control the first receiving end to disconnect the first switching switch, and control the first transmitting end and the third end of the first switching switch to be closed, so that the first antenna is connected to the first transmitting end; and the second antenna of the receiving side isolation domain is also connected to the second transmitting end, so the second antenna and the first antenna generate crosstalk, and the second power of the second antenna is attenuated, so the second power detection module in the receiving side isolation domain can detect the second power attenuation, and since the second connection mark is a transmitting connection mark, the second switching switch in the receiving side isolation domain can be controlled to switch from the second transmitting end to the second receiving end, so as to connect the second receiving end and the second antenna through the second switching switch.

[0149] In addition, in other embodiments, after the receiving side isolation domain sends a normal recovery signal to the transmitting side isolation domain, the second logic control module controls the second transmitting end to disconnect from the second switching switch, and controls the second receiving end to close with the third end of the second switching switch, so that the second receiving end is connected to the second antenna; at this time, the first antenna in the transmitting side isolation domain is also connected to the first receiving end, the second antenna and the first antenna generate crosstalk, and the first power of the first antenna will also attenuate, so the first power detection module in the receiving side isolation domain can detect the first power attenuation, and since the first connection mark is a receiving connection mark, the first switching switch in the transmitting side isolation domain can be controlled to switch from the first receiving end to the first transmitting end, so as to connect the first transmitting end and the first antenna through the first switching switch.

[0150] Step S22: When the first transmitting end is connected to the first antenna and the second receiving end is connected to the second antenna, the first connection flag is adjusted to a transmitting connection flag and the second connection flag is adjusted to a receiving connection flag.

[0151] It should be noted that, since the first connection flag is stored in the first logic control module and the second connection flag is stored in the second logic control module, when the connection state of the first antenna and the connection state of the second antenna change, the first connection flag and the second connection flag also need to be adjusted to ensure the accuracy of the first connection flag and the second connection flag. The first connection flag and the second connection flag are adjusted only after the first switching switch is switched and the second switching switch is switched. This ensures the accuracy of the first connection flag and the second connection flag. It is also convenient to ensure the accuracy of the connection between the first antenna and the second antenna.

[0152] Since the time when the first switching switch is completed may be different from the time when the second switching switch is completed, if the first connection flag and / or the second connection flag are adjusted only after the first switching switch is switched or the second switching switch is switched, it may cause the first switching switch to switch repeatedly for multiple times, and it may also cause the second switching switch to switch repeatedly for multiple times, and invalid switching may occur. For example, before the first switching switch is switched, the second end and the third end are closed, that is, the first receiving end is connected to the first antenna. When the first switching switch is switched twice, that is, the first switch is switched to the first end and the third end are closed, and the second switch is switched to the second end and the third end are closed, so that after the first switching switch is switched, it returns to the state before the switching, which leads to invalid switching.

[0153] Exemplarily, when the first transmitting end is connected to the first antenna and the second receiving end is connected to the second antenna, the first connection flag is adjusted to the transmitting connection flag, and the second connection flag is adjusted to the receiving connection flag. In other embodiments, a preset delay can be determined, and the first connection flag and the second connection flag are adjusted after the preset delay when the second switching switch or the first switching switch starts switching. The preset delay can be determined based on actual conditions, but at the end of the preset delay, it is also necessary to ensure that both the first switching switch and the second switching switch have completed switching. This ensures the accuracy of the connection between the first antenna and the second antenna.

[0154] The digital isolator provided in the embodiment of the present application adopts the antenna coupling isolation device in the above embodiment, aiming to solve the technical problem that the antenna isolation device can only transmit signals in one direction. Compared with the prior art, the beneficial effects of the digital isolator provided in the embodiment of the present application are the same as the beneficial effects of the antenna coupling isolation device provided in the above embodiment, and the other technical features in the digital isolator are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0155] The above are only preferred embodiments of the embodiments of the present application, and are not intended to limit the patent scope of the embodiments of the present application. Any equivalent structure or equivalent process transformation made using the description and drawings of the embodiments of the present application, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the embodiments of the present application.

Claims

1. An antenna coupling isolation device, characterized in that: The antenna coupling isolation device comprises a transmitting side isolation domain, a receiving side isolation domain and an isolation fence, wherein the transmitting side isolation domain is connected to the receiving side isolation domain through the isolation fence, the transmitting side isolation domain comprises: a first transmitting end, a first receiving end, a first switching switch and a first antenna, and the receiving side isolation domain comprises: a second transmitting end, a second receiving end, a second switching switch and a second antenna; The first transmitting end is connected to the first antenna through the first switching switch, the second receiving end is connected to the second antenna through the second switching switch, and the transmitting side isolation domain is used to send a first signal to the receiving side isolation domain; The transmitting side isolation domain is further used to switch the first antenna to the first receiving end through the first switching switch when detecting that the second antenna is switched to the second transmitting end, so as to receive the reception abnormality signal sent by the receiving side isolation domain and stop sending the first signal; The receiving side isolation domain is further used to switch the second antenna to the second transmitting end through the second switching switch when a reception abnormality signal is detected, so as to send the reception abnormality signal to the transmitting side isolation domain; In the case of the first power attenuation, if the first connection mark is a transmission connection mark, the first switch is adjusted so that the second end and the third end of the first switch are closed, so that the first antenna is connected to the first receiving end through the first switch; In the case of the first power attenuation, if the first connection mark is a receiving connection mark, the closed state of the first switch is adjusted to close the first end and the third end, so that the first antenna is connected to the first transmitting end through the first switch; In the case of the second power attenuation, if the second connection mark is a transmission connection mark, the second switch is adjusted so that the second end and the third end of the second switch are closed, so that the second antenna is connected to the second receiving end through the second switch; If the second power is attenuated, if the second connection mark is a receiving connection mark, the second switch is adjusted so that the first end and the third end of the second switch are closed, so that the second antenna is connected to the second transmitting end through the second switch; When the first transmitting end is connected to the first antenna and the second receiving end is connected to the second antenna, the first connection flag is adjusted to a transmitting connection flag and the second connection flag is adjusted to a receiving connection flag; When the second transmitting end is connected to the second antenna and the first receiving end is connected to the first antenna, the first connection mark in the transmitting side isolation domain is adjusted to the receiving connection mark, and the second connection mark in the receiving side isolation domain is adjusted to the transmitting connection mark.

2. The antenna coupling isolation device according to claim 1, characterized in that: The transmitting side isolation domain further includes a first power detection module and a first logic control module, the first power detection module is respectively connected to the first logic control module, the first switch and the first antenna, and the first logic control module is respectively connected to the first transmitting end and the first receiving end; The first power detection module is used to detect the first power of the first antenna; The first power detection module is also used to control the first switching switch to switch to the first receiving end when the first antenna is connected to the first transmitting end through the first switching switch and the first power meets the preset attenuation condition, so as to connect the first receiving end and the first antenna through the first switching switch when it is detected that the second antenna is switched to the second transmitting end.

3. The antenna coupling isolation device according to claim 2, characterized in that: The first logic control module is also used to store a first connection flag of the transmitting side isolation domain; The first logic control module is further used to control the first receiving end to operate in a low power consumption mode when the first connection mark is a transmitting connection mark, and is further used to control the first transmitting end to operate in a low power consumption mode when the first connection mark is a receiving connection mark.

4. The antenna coupling isolation device according to claim 1, characterized in that: The receiving side isolation domain further includes a second power detection module and a second logic control module, the second power detection module is respectively connected to the second logic control module, the second switch and the second antenna, and the second logic control module is respectively connected to the second transmitting end and the second receiving end; The second power detection module is used to detect the second power of the second antenna; The second power detection module is also used to control the second switching switch to switch to the second receiving end when the second antenna is connected to the second transmitting end through the second switching switch and the second power meets the preset attenuation condition, and connect the second receiving end and the second antenna through the second switching switch to restore the reception of the first signal sent by the transmitting side isolation domain.

5. The antenna coupling isolation device according to claim 4, characterized in that: The second logic control module is also used to store a second connection flag of the receiving side isolation domain; The second logic control module is also used to control the second receiving end to run in low power consumption mode when the second connection mark is a transmitting connection mark, and is also used to control the second transmitting end to run in low power consumption mode when the second connection mark is a receiving connection mark.

6. The antenna coupling isolation device according to any one of claims 1 to 5, characterized in that: The first logic control module also includes a first interface unit, the first interface unit includes a first data interface, a first clock interface, a first abnormal flag interface and a second abnormal flag interface, the first data interface and the first clock interface are used to receive a first signal of the signal transmitting module connected to the transmitting side isolation domain; The first abnormal flag interface and the second abnormal flag interface are used to transmit the reception abnormality signal received by the first receiving end to the signal transmitting module, so as to prompt the signal transmitting module to stop inputting the first signal to the transmitting side isolation domain; The second logic control module also includes a second interface unit, which includes a second clock interface, a second data interface, a third abnormal flag interface, and a fourth abnormal flag interface, and the second data interface and the second clock interface are used to send the first signal received by the receiving side isolation domain to the signal receiving module connected to the receiving side isolation domain; The third abnormal flag interface and the fourth abnormal flag interface are used to receive a reception abnormality signal from a second isolation control module connected to the reception side isolation domain, and transmit the reception abnormality signal to the second transmitting end, so as to send the reception abnormality signal to the transmitting side isolation domain through the second transmitting end and the second antenna.

7. The antenna coupling isolation device according to claim 1, characterized in that: The transmitting side isolation domain is also used to switch the first antenna to the first transmitting end through the first switching switch when receiving a normal recovery signal sent by the receiving side isolation domain.

8. An antenna coupling isolation method, characterized in that: Applied to the antenna coupling isolation device according to any one of claims 1 to 7, the method comprising: When it is detected that the first power of the transmitting side isolation domain meets the preset attenuation condition and the first connection mark of the transmitting side isolation domain is a transmitting connection mark, control the first switching switch in the transmitting side isolation domain to switch from the first transmitting end to the first receiving end, so that when the second antenna of the receiving side isolation domain is switched to the second transmitting end, the first antenna is switched to the first receiving end through the first switching switch; When the second transmitting end is connected to the second antenna and the first receiving end is connected to the first antenna, the first connection mark in the transmitting side isolation domain is adjusted to a receiving connection mark, and the second connection mark in the receiving side isolation domain is adjusted to a transmitting connection mark; In the case of the first power attenuation, if the first connection mark is a receiving connection mark, the closed state of the first switch is adjusted to close the first end and the third end, so that the first antenna is connected to the first transmitting end through the first switch; In the case of the second power attenuation, if the second connection mark is a transmission connection mark, the second switch is adjusted so that the second end and the third end of the second switch are closed, so that the second antenna is connected to the second receiving end through the second switch; If the second power is attenuated, if the second connection mark is a receiving connection mark, the second switch is adjusted so that the first end and the third end of the second switch are closed, so that the second antenna is connected to the second transmitting end through the second switch; When the first transmitting end is connected to the first antenna and the second receiving end is connected to the second antenna, the first connection flag is adjusted to a transmitting connection flag, and the second connection flag is adjusted to a receiving connection flag.

9. The antenna coupling isolation method according to claim 8, characterized in that: After the step of adjusting the first connection flag in the transmitting side isolation domain to the receiving connection flag and adjusting the second connection flag in the receiving side isolation domain to the transmitting connection flag, the method further includes: When the transmitting-side isolation domain receives a normal recovery signal sent by the receiving-side isolation domain, the first switching switch in the transmitting-side isolation domain is controlled to switch from the first receiving end to the first transmitting end, so as to connect the first transmitting end and the first antenna through the first switching switch, and the second switching switch in the receiving-side isolation domain is controlled to switch from the second transmitting end to the second receiving end, so as to connect the second receiving end and the second antenna through the second switching switch; When the first transmitting end is connected to the first antenna and the second receiving end is connected to the second antenna, the first connection flag is adjusted to a transmitting connection flag, and the second connection flag is adjusted to a receiving connection flag.

10. A digital isolator, characterized in that: The digital isolator comprises the antenna coupling isolation device according to any one of claims 1 to 7.

Images