A coupling and decoupling network for composite signal transmission

Abstract

This invention discloses a coupling and separation network for composite signal transmission, relating to the field of composite signal transmission. The coupling and separation network includes: a boost module for boosting an AC drive signal; a drive transmission module for transmitting the boosted AC drive signal and outputting it to a parallel resonant module via a cable; and a parallel resonant module for ensuring that the voltage and current on the coaxial cable are in phase. The boost module is connected to the drive transmission module, which in turn is connected to both the parallel resonant module and the boost module. This coupling and separation network drives three types of signals. Compared with existing technologies, the advantages of this invention are: it avoids the problems of relay mechanical reliability and transient interference caused by switching during composite signal transmission, and it utilizes a transducer-matched inductor to achieve high-voltage, high-power, low-frequency signal filtering, avoiding the size and weight costs associated with additional components.

Description

Technical Field

[0001] This invention relates to the field of composite signal transmission, specifically a coupling and decoupling network for composite signal transmission. Background Technology

[0002] Currently, the coupling and separation network for transmitting composite signals simultaneously—high-voltage, high-power, low-frequency AC drive signals, DC power supply signals, and low-power, high-frequency communication signals—on a single-loop cable is typically implemented using relays. At end I, a coupling transformer couples the DC power supply signal and the low-power, high-frequency communication signal, and then a high-voltage relay isolates the high-voltage, high-power, low-frequency AC drive signal. Control commands are sent to end II via the high-voltage relay after passing through the coupling transformer. At end II, a coupling transformer couples the DC power supply signal and the low-power, high-frequency communication signal, and then a high-voltage relay isolates the high-voltage, high-power, low-frequency AC drive signal. The high-voltage, high-power, low-frequency AC drive signal is applied to the AC load, and the DC power supply signal is applied to the DC load. Acquired data is sent to end I via the high-voltage relay after passing through the coupling transformer.

[0003] Existing technologies use relays to couple and separate composite signal transmissions that simultaneously transmit high-voltage, high-power, low-frequency AC drive signals, DC power supply signals, and low-power, high-frequency communication signals on a single-loop cable. However, the mechanical reliability of relays and transient interference caused during switching are difficult to avoid. In addition, the additional components bring about a cost in terms of size and weight, which requires improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a coupling and decoupling network for composite signal transmission to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A coupling and decoupling network for composite signal transmission, comprising:

[0007] A boost module is used to boost AC drive signals.

[0008] The drive transmission module is used to transmit the boosted AC drive signal and output it to the parallel resonant module via a cable.

[0009] Parallel resonant modules are used to ensure that the voltage and current on a coaxial cable are in phase.

[0010] The boost module is connected to the drive transmission module, and the drive transmission module is connected to the parallel resonant module and the boost module.

[0011] The coupling and decoupling network for the composite signal transmission drives three signals.

[0012] High-voltage, high-power, low-frequency AC drive signal is used to complete AC drive through boost module, drive transmission module, and parallel resonant module;

[0013] The DC power supply signal is used to supply power to the DC load through the drive transmission module and the parallel resonant module;

[0014] Low-power high-frequency communication signals are used to complete high-frequency communication via cables.

[0015] As a further embodiment of the present invention: the boost module includes a transformer H1, the input side of which is connected to an AC source, and the output side of which is connected to a drive transmission module.

[0016] As a further embodiment of the present invention: the drive transmission module includes a capacitor C1, an inductor L1, and an inductor L2. The first end of the capacitor C1 is connected to the boost module, the second end of the capacitor C1 is connected to the first end of the inductor L1, the second end of the inductor L1 is connected to the first end of the first cable, the second end of the first cable is connected to the first end of the inductor L2, and the second end of the inductor L2 is connected to the parallel resonant module.

[0017] As a further embodiment of the present invention: the parallel resonant module includes a transducer C6, an inductor L3, and a capacitor C7. The first end of the transducer C6 is connected to the first end of the inductor L3 and the drive transmission module. The second end of the transducer C6 is connected to the first end of the capacitor C7 and the first end of the second cable. The second end of the second cable is connected to the boost module. The second end of the inductor L3 is connected to the second end of the capacitor C7.

[0018] As a further aspect of the present invention: when the DC power supply signal is used, the coupling and separation network for the composite signal transmission includes a low-pass filter network N1 and a low-pass filter network N4. The first end of the low-pass filter network N1 is connected to the DC power supply, and the second and third ends of the low-pass filter network N1 are connected to the two ends of the capacitor C1. The first end of the low-pass filter network N4 is connected to the DC power load, and the second and third ends of the low-pass filter network N4 are connected to the two ends of the capacitor C7.

[0019] As a further embodiment of the present invention: for low-power high-frequency communication signals, the coupling and separation network for composite signal transmission includes a high-pass filter network N2 and a high-pass filter network N3. The first end of the high-pass filter network N2 is connected to the first radio frequency communication module, the second end of the high-pass filter network N2 is connected to the first end of the first cable through capacitor C2, the third end of the high-pass filter network N2 is connected to the second end of the second cable through a third capacitor C3, the first end of the high-pass filter network N3 is connected to the second radio frequency communication module, the second end of the high-pass filter network N3 is connected to the second end of the first cable through capacitor C4, and the third end of the high-pass filter network N3 is connected to the first end of the second cable through a fifth capacitor.

[0020] As a further aspect of the present invention: a dipping sonar transmitter and an underwater sub-unit are applied to the coupling and separation network of the composite signal transmission described above. The dipping sonar transmitter and the underwater sub-unit complete AC drive through a high-voltage, high-power, low-frequency AC drive signal; complete DC power supply to the DC load through a DC power supply signal; and complete high-frequency communication through a low-power, high-frequency communication signal.

[0021] Compared with the prior art, the beneficial effects of the present invention are: the present invention avoids the problems of relay mechanical reliability and transient interference caused by switching during composite signal transmission, and uses transducer matching inductor to achieve high voltage, high power, low frequency signal filtering, avoiding the volume and weight costs brought by additional components. Attached Figure Description

[0022] Figure 1 This is a circuit diagram of a coupling and decoupling network for composite signal transmission.

[0023] Figure 2 This is a circuit diagram for a dipping sonar transmitter and its underwater sub-unit application. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1 A coupling and decoupling network for composite signal transmission, comprising:

[0026] A boost module is used to boost AC drive signals.

[0027] The drive transmission module is used to transmit the boosted AC drive signal and output it to the parallel resonant module via a cable.

[0028] Parallel resonant modules are used to ensure that the voltage and current on a coaxial cable are in phase.

[0029] The boost module is connected to the drive transmission module, and the drive transmission module is connected to the parallel resonant module and the boost module.

[0030] The coupling and decoupling network for the composite signal transmission drives three signals.

[0031] High-voltage, high-power, low-frequency AC drive signals are used to complete AC drive through a boost module, drive transmission module, and parallel resonant module.

[0032] The DC power supply signal is used to supply power to the DC load through the drive transmission module and the parallel resonant module;

[0033] Low-power high-frequency communication signals are used to complete high-frequency communication via cables.

[0034] In this embodiment: Please refer to Figure 1 The boost module includes a transformer H1, the input side of which is connected to an AC power source, and the output side of which is connected to a drive transmission module.

[0035] The high-power low-frequency AC drive signal is stepped up by transformer H1 and then output to the drive transmission module.

[0036] In this embodiment: Please refer to Figure 1 The drive transmission module includes a capacitor C1, an inductor L1, and an inductor L2. The first end of the capacitor C1 is connected to the boost module, the second end of the capacitor C1 is connected to the first end of the inductor L1, the second end of the inductor L1 is connected to the first end of the first cable, the second end of the first cable is connected to the first end of the inductor L2, and the second end of the inductor L2 is connected to the parallel resonant module.

[0037] The boosted high-power low-frequency AC drive signal is sequentially output to the parallel resonant module after passing through the DC blocking capacitor C1, the frequency dividing inductor L1, the first cable, and the frequency dividing inductor L2.

[0038] In this embodiment: Please refer to Figure 1 The parallel resonant module includes a transducer C6, an inductor L3, and a capacitor C7. The first end of the transducer C6 is connected to the first end of the inductor L3 and the drive transmission module. The second end of the transducer C6 is connected to the first end of the capacitor C7 and the first end of the second cable. The second end of the second cable is connected to the boost module. The second end of the inductor L3 is connected to the second end of the capacitor C7.

[0039] The input drive signal is applied to transducer C6; the matching inductor L3 and the DC blocking capacitor C7 are connected in series and then in parallel with transducer C6 to form a parallel resonant circuit, so that the voltage and current on the coaxial cable are in phase, thereby completing the high-voltage, high-power, low-frequency AC drive signal.

[0040] In this embodiment: Please refer to Figure 1 When the signal is powered by DC, the coupling and separation network for the composite signal transmission includes a low-pass filter network N1 and a low-pass filter network N4. The first end of the low-pass filter network N1 is connected to the DC power supply, and the second and third ends of the low-pass filter network N1 are connected to the two ends of the capacitor C1. The first end of the low-pass filter network N4 is connected to the DC power load, and the second and third ends of the low-pass filter network N4 are connected to the two ends of the capacitor C7.

[0041] When a DC power supply signal is applied, the DC power supply is applied to both ends of the DC blocking capacitor C1 after passing through the low-pass filter network N1. It is then applied to the DC load circuit after passing through the frequency divider inductor L1, the first cable, the frequency divider inductor L2, the matching inductor L3, and the low-pass filter network N4. The voltage division effect of the matching inductor L3 reduces the low-frequency AC signal voltage across the DC blocking capacitors C1 and C7. Therefore, the low-pass filter networks N1 and N4 can use low-voltage devices.

[0042] In this embodiment: Please refer to Figure 1 In the case of high-frequency communication signals, the coupling and separation network for composite signal transmission includes a high-pass filter network N2 and a high-pass filter network N3. The first end of the high-pass filter network N2 is connected to the first radio frequency communication module. The second end of the high-pass filter network N2 is connected to the first end of the first cable through capacitor C2. The third end of the high-pass filter network N2 is connected to the second end of the second cable through a third capacitor C3. The first end of the high-pass filter network N3 is connected to the second radio frequency communication module. The second end of the high-pass filter network N3 is connected to the second end of the first cable through capacitor C4. The third end of the high-pass filter network N3 is connected to the first end of the second cable through a fifth capacitor.

[0043] The high-frequency communication signal forms a loop on the first cable and the second cable through the frequency division coupling capacitors C2, C3, C4 and C5.

[0044] In this embodiment: Please refer to Figure 2 A dipping sonar transmitter and an underwater sub-unit are used in the coupling and decoupling network for composite signal transmission as described above. The dipping sonar transmitter and the underwater sub-unit complete AC drive through a high-voltage, high-power, low-frequency AC drive signal; complete DC load power supply through a DC power supply signal; and complete high-frequency communication through a low-power, high-frequency communication signal.

[0045] High-voltage, high-power, low-frequency AC drive signal Figure 2 The middle section, from left to right (J46P, J47N, J32P, J31N, J50P, J49N, J51P, J52N), sequentially passes through the boost module, drive transmission module, and parallel resonant module to complete the AC drive.

[0046] DC power supply signal, Figure 2 A 153V voltage is introduced from the upper left side. After processing, it reaches the DC power load at the lower right side via the drive transmission module and the parallel resonant module. The DC power load obtains +100V and -100V supply voltages to operate.

[0047] High-frequency communication signals, Figure 2 A radio frequency communication module is introduced at the SMA and SMAGND points in the lower middle section, and the signal is transmitted to another radio frequency communication module via the first cable and the second cable.

[0048] The working principle of this invention is as follows: When driving high-voltage, high-power, low-frequency AC signals, the presence of high-pass filter networks N2 and N3 and low-pass filter networks N1 and N4 does not affect the operation of other signals.

[0049] In the case of DC power supply signals, capacitors C1, C2, C3, C4, C5, C7 and transducer C6 (which includes internal capacitors) allow AC to pass while blocking DC, so they do not affect the operation of other signals.

[0050] When high-frequency communication signals are used, the frequency divider inductors L1 and L2 prevent high-frequency signals from reaching the circuits containing high-voltage, high-power, low-frequency AC drive signals and current supply signals, thus not affecting the operation of other signals.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coupling and decoupling network for composite signal transmission, characterized in that: The coupling and decoupling network for this composite signal transmission includes: A boost module is used to boost AC drive signals. The drive transmission module is used to transmit the boosted AC drive signal and output it to the parallel resonant module via a cable. Parallel resonant modules are used to ensure that the voltage and current on a coaxial cable are in phase. The boost module is connected to the drive transmission module, and the drive transmission module is connected to the parallel resonant module and the boost module. The coupling and decoupling network for the composite signal transmission drives three signals. High-voltage, high-power, low-frequency AC drive signal is used to complete AC drive through boost module, drive transmission module, and parallel resonant module; The DC power supply signal is used to supply power to the DC load through the drive transmission module and the parallel resonant module; Low-power high-frequency communication signals are used to complete high-frequency communication via cables; The drive transmission module includes a capacitor C1, an inductor L1, and an inductor L2. The first end of the capacitor C1 is connected to the boost module, the second end of the capacitor C1 is connected to the first end of the inductor L1, the second end of the inductor L1 is connected to the first end of the first cable, the second end of the first cable is connected to the first end of the inductor L2, and the second end of the inductor L2 is connected to the parallel resonant module. The parallel resonant module includes a transducer C6, an inductor L3, and a capacitor C7. The first end of the transducer C6 is connected to the first end of the inductor L3 and the drive transmission module. The second end of the transducer C6 is connected to the first end of the capacitor C7 and the first end of the second cable. The second end of the second cable is connected to the boost module. The second end of the inductor L3 is connected to the second end of the capacitor C7.

2. The coupling and decoupling network for composite signal transmission according to claim 1, characterized in that, The boost module includes transformer H1, with the input side of transformer H1 connected to an AC source and the output side of transformer H1 connected to a drive transmission module.

3. The coupling and decoupling network for composite signal transmission according to claim 1, characterized in that, When a DC power supply signal is used, the coupling and separation network for the composite signal transmission includes a low-pass filter network N1 and a low-pass filter network N4. The first end of the low-pass filter network N1 is connected to the DC power supply, and the second and third ends of the low-pass filter network N1 are connected to the two ends of capacitor C1. The first end of the low-pass filter network N4 is connected to the DC power load, and the second and third ends of the low-pass filter network N4 are connected to the two ends of capacitor C7.

4. The coupling and decoupling network for composite signal transmission according to claim 1, characterized in that, When transmitting low-power, high-frequency communication signals, the coupling and decoupling network for the composite signal transmission includes a high-pass filter network N2 and a high-pass filter network N3. The first end of the high-pass filter network N2 is connected to the first radio frequency communication module. The second end of the high-pass filter network N2 is connected to the first end of the first cable through a capacitor C2. The third end of the high-pass filter network N2 is connected to the second end of the second cable through a third capacitor C3. The first end of the high-pass filter network N3 is connected to the second radio frequency communication module. The second end of the high-pass filter network N3 is connected to the second end of the first cable through a capacitor C4. The third end of the high-pass filter network N3 is connected to the first end of the second cable through a fifth capacitor.

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