Frequency override device of civil aviation very high frequency communication system

Abstract

The utility model provides a frequency override device of a civil aviation very high frequency communication system, and relates to the technical field of very high frequency communication. In the frequency override device, a control module is connected with a channel module, and the channel module is connected with at least one very high frequency radio station device; the very high frequency radio station equipment is connected with the override seat unit through a first data transmission path and is connected with the common seat unit through a second data transmission path, and the first data transmission path and the second data transmission path are provided with control switches connected with the control module; and the control module is connected with the control switch, and the control module is used for preventing the first data transmission path from sending data to the very high frequency radio station equipment by using the control switch when receiving the push-to-talk signal transmitted by the push-to-talk end of the override seat unit through the channel module. According to the embodiment of the invention, the call can be quickly preempted by the override seat, the equipment cost is low, the preemption speed is high, and the efficiency is high, so that the safe operation of civil aviation air traffic control is effectively guaranteed.

Description

Technical Field

[0001] This application relates to the field of VHF communication technology, and more specifically, to a frequency over-control device for a civil aviation VHF communication system. Background Technology

[0002] VHF communication used at airports is primarily for two-way voice communication between flight crews and ground controllers during takeoff, landing, or when passing through controlled airspace. VHF air-to-ground communication has become the main means of air-to-ground communication. Within the airport terminal control area, VHF communication can provide communication services such as tower, approach, terminal automatic information services, and flight management. The use of VHF communication equipment at airports is becoming increasingly widespread.

[0003] However, airport VHF communication frequencies are limited, and with the continuous increase in flight takeoffs and landings, there is an urgent need to improve runway operational efficiency. This necessitates that both overriding and regular control positions use the same control frequency. To avoid conflicts and meet emergency handling requirements, an overriding position with higher frequency priority is needed to preempt the communication frequency of a lower-priority regular control position in emergencies to alleviate the situation. However, some overriding and regular control positions do not use the same intercom system, making it impossible to implement frequency overriding at the intercom system level. This means that rapid preemption of communication is not possible, hindering the effective guarantee of safe operation of civil aviation air traffic control. Utility Model Content

[0004] This application provides a frequency over-control device for a civil aviation VHF communication system, which can solve the problem that existing devices cannot quickly preempt calls and are difficult to effectively ensure the safe operation of civil aviation air traffic control.

[0005] To achieve this objective, the embodiments of this application provide the following solutions.

[0006] According to one aspect of the present application, a frequency over-control device for a civil aviation VHF communication system is provided, including a control module and at least one channel module, wherein the control module is connected to the channel module, and the channel module is connected to at least one VHF radio device of the civil aviation VHF communication system.

[0007] The channel module includes a first data transmission path and a second data transmission path. The VHF radio equipment is connected to the super control seat unit through the first data transmission path and to the commonly used seat unit through the second data transmission path. Both the first data transmission path and the second data transmission path are equipped with control switches connected to the control module. Both the super control seat and the commonly used seat are equipped with a press-to-talk terminal.

[0008] The control module is connected to the control switch. When the control module receives the push-to-talk signal transmitted by the push-to-talk terminal of the super control seat unit through the channel module, it uses the control switch to prevent the first data transmission path from sending data to the VHF radio equipment.

[0009] In one possible implementation, the first data transmission path includes a first data receiving path, the second data transmission path includes a second data receiving path, the second end of the first data receiving path is connected to the data receiving end of the super control seat, the second end of the second data receiving path is connected to the data receiving end of the commonly used seat, and the first end of the first data receiving path and the second end of the second data receiving path are both connected to the data receiving end of the VHF radio equipment.

[0010] In one possible implementation, the first data transmission path includes a first data transmission path, the second data transmission path includes a second data transmission path, a first end of the first data transmission path and a first end of the second data transmission path are connected to the data transmission end of the VHF radio equipment, a second end of the first data transmission path is connected to the data transmission end of the super control seat, and a second end of the second data transmission path is connected to the data transmission end of the commonly used seat.

[0011] The control switch includes a data transmission switch, which is disposed in the first data transmission path and the second data transmission path. The control module is connected to the data transmission switch to control the on / off state of the first data transmission path and the second data transmission path.

[0012] In one possible implementation, the channel module includes a push-to-talk channel, which is connected to the control module, the push-to-talk terminal of the super control seat, the push-to-talk terminal of the frequently used seat, and the push-to-talk terminal of the VHF radio.

[0013] The control switch includes a push-to-talk control switch, which is disposed in the push-to-talk channel and connected to the control module. The push-to-talk switch is used to disconnect the push-to-talk terminal of the frequently used seat from the push-to-talk terminal of the VHF radio after receiving the over-control command from the control module.

[0014] In one possible implementation, the push-to-talk channel includes a first level conversion circuit, a first audio isolation circuit, a second level conversion circuit, and a second audio isolation circuit. The second terminal of the first level conversion circuit is connected to the push-to-talk terminal of the super control seat, the first terminal of the first level conversion circuit is connected to the second terminal of the first audio isolation circuit, and the first terminal of the first audio isolation circuit is connected to the control module.

[0015] The second terminal of the second level conversion circuit is connected to the press-and-talk terminal of the commonly used seat, the first terminal of the second level conversion circuit is connected to the second terminal of the second audio isolation circuit, and the first terminal of the second audio isolation circuit is connected to the control module.

[0016] In one possible implementation, indicator lights are also included, the number of which is the same as the number of channel modules, and each indicator light corresponds one-to-one with a channel module. The indicator lights are connected to the control module and are used to display the channel module that issues the "press and speak" signal.

[0017] In one possible implementation, a housing is included, in which the control module and the channel module are disposed. A connection port is provided on one side of the housing, and the VHF radio equipment, the over-control seat, and the commonly used seat are connected to the channel module through the connection port.

[0018] In one possible implementation, the port type of the connection port includes an RJ45 port, and the connection port and the indicator light are located on the same side of the housing.

[0019] In one possible implementation, a power module with a first power supply circuit is included. The power module includes a power port located on one side of the housing. The power module receives AC power through the power port. The first power supply circuit is connected to the on-demand terminal to supply power to the on-demand terminal.

[0020] In one possible implementation, the power module includes a backup power port and a power switch, the power switch and the backup power port are located on the same side of the housing, and the power module receives DC power through the backup power port.

[0021] The beneficial effects of the technical solutions provided in this application are:

[0022] The frequency overriding device for the civil aviation VHF communication system provided in this application has a control module connected to a channel module. The channel module is connected to at least one VHF radio device of the civil aviation VHF communication system. The channel module includes a first data transmission path and a second data transmission path. The VHF radio device is connected to the overriding seat unit through the first data transmission path and to the frequently used seat unit through the second data transmission path. Both the first and second data transmission paths are equipped with control switches connected to the control module. Both the overriding seat and the frequently used seat are equipped with push-to-talk terminals. The control module is connected to the control switches and is used to prevent the first data transmission path from sending data to the VHF radio device when it receives a push-to-talk signal transmitted from the push-to-talk terminal of the overriding seat unit through the channel module. The embodiments of this application can achieve rapid preemption of calls by the overriding seat without changing the intercom system of the overriding seat and the frequently used seat. The equipment is low-cost, fast-preemption, and highly efficient, thereby effectively ensuring the safe operation of civil aviation air traffic control. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below.

[0024] Figure 1 A structural diagram of the frequency over-control device for a civil aviation VHF communication system provided in this application embodiment;

[0025] Figure 2 A schematic diagram of the frequency over-control device for a civil aviation VHF communication system provided in this application embodiment;

[0026] Figure 3 A schematic diagram of the connection port of the frequency overriding device of the civil aviation VHF communication system provided in the embodiments of this application;

[0027] Figure 4 A circuit diagram of the voltage conversion circuit provided in the embodiments of this application;

[0028] Figure 5 A circuit diagram of the third data transmission switch provided in the embodiments of this application;

[0029] Figure 6 Partial circuit diagrams of the first and second audio isolation circuits provided in the embodiments of this application;

[0030] Figure 7 A circuit diagram of an optocoupler solid-state relay provided in an embodiment of this application;

[0031] Figure 8 A circuit diagram of the first power supply circuit provided in the embodiments of this application;

[0032] Figure 9 A circuit diagram of an audio isolation transformer provided in an embodiment of this application.

[0033] Labeling Explanation: D2, Second Diode; P1, First Interface; P2, Second Interface; R1, First Resistor; R2, Second Resistor; R3, Third Resistor; R4, Fourth Resistor; R5, Fifth Resistor; R6, Sixth Resistor; R7, Seventh Resistor; Q1, First Transistor; Q2, Second Transistor; D1, First Diode; D3, Third Diode;

[0034] U20, First boost converter chip; U21, Second boost converter chip; C8, Eighth capacitor; C9, Ninth capacitor; C10, Tenth capacitor; C11, Eleventh capacitor; C6, Sixth capacitor; R91, Ninety-first resistor; C5, Fifth capacitor; R90, Ninetieth resistor; C7, Seventh capacitor;

[0035] P9, Ninth Interface; P10, Tenth Interface; D21, Twenty-first Diode; D25, Twenty-fifth Diode; R22, Twenty-second Resistor; T1, Filter; C3, Third Capacitor; C2, Second Capacitor; U19, Switching Regulator; D24, Twenty-fourth Diode; L1, First Inductor; C4, Fourth Capacitor; C1, First Capacitor; D23, Twenty-third Diode; R81, Eighty-first Resistor. Detailed Implementation

[0036] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0037] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the terms “comprising” and “including” as used in embodiments of this application mean that the corresponding feature can be implemented as the presented feature, information, data, step, operation, element, and / or component, but do not exclude implementation as other features, information, data, step, operation, element, component, and / or combinations thereof supported by the art. It should be understood that when we say that an element is “connected” or “coupled” to another element, the one element can be directly connected or coupled to the other element, or it can mean that the one element and the other element establish a connection relationship through an intermediate element. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein indicates at least one of the items defined by the term; for example, “A and / or B” indicates implementation as “A,” or implementation as “A,” or implementation as “A and B.”

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0039] The technical solutions of this utility model and their effects are described below through several exemplary embodiments. It should be noted that the following embodiments can be referenced, borrowed from, or combined with each other. Identical terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0040] The frequency over-control device for civil aviation VHF communication systems provided in this application aims to solve at least one technical problem existing in the prior art.

[0041] This application provides a frequency over-control device for a civil aviation VHF communication system, such as... Figures 1-9 As shown, the frequency overriding device of the civil aviation VHF communication system includes a control module and at least one channel module. The control module is connected to the channel module, and the channel module is connected to at least one VHF radio device of the civil aviation VHF communication system. The channel module includes a first data transmission path and a second data transmission path. The VHF radio device is connected to the overriding seat unit through the first data transmission path and to the regular seat unit through the second data transmission path. Both the first data transmission path and the second data transmission path are equipped with control switches connected to the control module. Both the overriding seat and the regular seat are equipped with push-to-talk (PTT) terminals. The control module is connected to the control switches. When the control module receives a push-to-talk signal transmitted from the push-to-talk terminal of the overriding seat unit through the channel module, the control module uses the control switches to prevent the first data transmission path from sending data to the VHF radio device.

[0042] Optionally, the users corresponding to the super control seat and the regular seats are different. The user of the super control seat has the right to preempt the call. When it is necessary to preempt the call, the user of the super control seat sends a "press to talk" signal to the channel module through the super control seat. The control module cuts off the data transmission from the regular seat to the VHF radio equipment based on this signal.

[0043] Optionally, the over-control position and the frequently used position can be set in different intercom systems, and the over-control position and the frequently used position realize data transmission with VHF radio equipment through the frequency over-control device.

[0044] Optionally, there can be one or more frequently used seats. After the control module does not receive a "press and talk" signal from the over-control seat, it controls one of the frequently used seats to communicate with the VHF radio equipment. Each station has at least one VHF radio device for VHF communication.

[0045] Optionally, there can be one or more channel modules, with the control module connected to each channel module and controlling the operation of the corresponding data transmission channel according to the push-to-talk signals transmitted by these channel modules.

[0046] In one embodiment, the number of channel modules can be four, with each channel module corresponding to a VHF radio station device at a given station. Due to the large number of different radio channels and seat channels involved in the frequency control device, as well as the requirements for high reliability and complex logic, the control module is equipped with an FPGA to control the data transmission of the four channel modules.

[0047] Optionally, the first data transmission path includes a first data receiving path, and the second data transmission path includes a second data receiving path. The second end of the first data receiving path is connected to the data receiving end of the super control seat, and the second end of the second data receiving path is connected to the data receiving end of the commonly used seat. Both the first end of the first data receiving path and the second end of the second data receiving path are connected to the data receiving end of the VHF radio equipment.

[0048] In one embodiment, such as Figure 2 As shown, the signal transmitted by the data receiver is a differential signal, and the symbols of the two ports of the data receiver are RX+ and RX-.

[0049] Optionally, to control the data reception of the over-the-counter and frequently used seats, the control switch may include a first data receiving switch and a second data receiving switch. The control module is connected to the first and second data receiving switches respectively. The first terminal of the first data receiving switch is connected to the first terminal of the first data receiving path and the first terminal of the second data receiving path, and the second terminal of the first data receiving switch is connected to the data receiving terminal of the VHF radio equipment. The second terminal of the second data receiving switch is connected to the data receiving terminal of the over-the-counter seat, and the first terminal of the second data receiving switch is connected to the second terminal of the first data receiving switch and the data receiving terminal of the VHF radio equipment. When a "push-to-talk" signal is received from the over-the-counter seat, the control module can control the second data receiving switch to close and the first data receiving switch to open. The signal received by the VHF radio equipment is transmitted to the over-the-counter seat through the second data receiving switch, and then to the frequently used seats. When the over-the-counter seat does not issue a "push-to-talk" signal, the second data receiving switch opens and the first data receiving switch closes, and the VHF radio equipment transmits signals to the over-the-counter seat and the frequently used seats through the first and second data receiving paths.

[0050] In one embodiment, such as Figure 7As shown, the first data receiving switch can be SSR18 or SSR19, and the second data receiving switch can be K2. Furthermore, both the first and second data receiving switches can be solid-state relays.

[0051] Specifically, the solid-state relay can be an optocoupler solid-state relay as shown in the figure. The control module controls the transmission of signal GRP1DEV PTT through signal GRP1SUP CTRL, and controls the transmission of signal GRP1NOR PTT and signal GRP1DEV PTT through signal GRP1NOR CTRL. At the same time, depending on the logic requirements, it controls the on / off or switching of the voice signal.

[0052] Optionally, the first data transmission path includes a first data transmission path, and the second data transmission path includes a second data transmission path. The first end of the first data transmission path and the first end of the second data transmission path are connected to the data transmission end of the VHF radio equipment. The second end of the first data transmission path is connected to the data transmission end of the control seat, and the second end of the second data transmission path is connected to the data transmission end of the frequently used seat. The control switch includes a data transmission switch, which is disposed in the first data transmission path and the second data transmission path. The control module is connected to the data transmission switch to control the on / off state of the first data transmission path and the second data transmission path.

[0053] Optionally, the data transmission switch includes a first data transmission switch and a second data transmission switch. The first data transmission switch is disposed in a first data transmission path, and the second data transmission switch is disposed in a second data transmission path. Both the first and second data transmission switches can be solid-state relays. The first terminal of the first data transmission switch and the first terminal of the second data transmission switch are connected to the data transmission terminal of the VHF radio equipment. The second terminal of the first data transmission switch is connected to the data transmission terminal of the overriding position, and the second terminal of the second data transmission switch is connected to the data transmission terminal of the commonly used position.

[0054] In one embodiment, the signals transmitted by the over-control seat and the commonly used seat through the data transmitter can be differential signals, the first data transmission switch can be SSR14 and SSR15, and the second data transmission switch can be SSR12 and SSR13.

[0055] Optionally, a third data transmission switch may also be included. The first terminal of the third data transmission switch is connected to the data transmission terminal of the VHF radio equipment, and the second terminal is connected to the second terminal of the second data transmission switch and the data transmission terminal of the frequently used seats. The control module is connected to the first, second, and third data transmission switches respectively, and controls the data transmission of the control seats and frequently used seats through the first, second, and third data transmission switches.

[0056] In one embodiment, such as Figure 5 As shown, the third data transmission switch can be K1, and it is a solid-state relay. The operating voltage of the third data transmission switch is 5V. It can be a contact-type relay with an operating voltage of 5V, and it includes an electromagnet. The switch is opened and closed by controlling the on / off state of the electromagnet. To prevent damage to the relay, a second diode D2 is also included. The anode of the second diode D2 is grounded, and its cathode is connected to the operating voltage output terminal of the relay.

[0057] Optionally, the control switch may further include a first switch, with a first terminal connected to the first terminal of a first data transmitting switch and a first terminal of a second data transmitting switch, and a second terminal connected to the data receiving terminal of a frequently used seat. Specifically, the first switch may be SSR26 or SSR27.

[0058] Optionally, the channel module includes a push-to-talk channel, which is connected to the control module, the push-to-talk terminal of the over-control position, the push-to-talk terminal of the frequently used position, and the push-to-talk terminal of the VHF radio; the control switch includes a push-to-talk control switch, which is set in the push-to-talk channel and connected to the control module, and is used to disconnect the push-to-talk terminal of the frequently used position from the push-to-talk terminal of the VHF radio after receiving the over-control command from the control module.

[0059] Optionally, the push-to-talk control switch includes a first push-to-talk switch, a second push-to-talk switch, and a third push-to-talk switch. The first terminals of the first, second, and third push-to-talk switches are connected to the push-to-talk terminal of the VHF radio equipment. The second terminals of the first and third push-to-talk switches are connected to the push-to-talk terminal of the frequently used seats. The second terminal of the second push-to-talk terminal is connected to the push-to-talk terminal of the over-control seat. When the control module receives a push-to-talk signal from the over-control seat, it can control the first and third push-to-talk switches to open and the second push-to-talk switch to close to allow the over-control seat to be preempted. After the over-control seat preemption ends, it can control the first or third push-to-talk switch to close to end the preemption of the over-control seat.

[0060] In one embodiment, the first push-to-talk switch, the second push-to-talk switch, and the third push-to-talk switch can all be solid-state relays. The first push-to-talk switch can be K3, the second push-to-talk switch can be SSR14, and the third push-to-talk switch can be SSR15.

[0061] Optionally, the push-to-talk path includes a first level conversion circuit, a first audio isolation circuit, a second level conversion circuit, and a second audio isolation circuit. The second terminal of the first level conversion circuit is connected to the push-to-talk terminal of the control seat, the first terminal of the first level conversion circuit is connected to the second terminal of the first audio isolation circuit, and the first terminal of the first audio isolation circuit is connected to the control module. The second terminal of the second level conversion circuit is connected to the push-to-talk terminal of the frequently used seat, the first terminal of the second level conversion circuit is connected to the second terminal of the second audio isolation circuit, and the first terminal of the second audio isolation circuit is connected to the control module. Voltage isolation and impedance matching are achieved through the first and second audio isolation circuits, thereby protecting the push-to-talk path. The first and second audio isolation circuits are used to achieve audio isolation, and therefore can be applied in impedance matching of input stage, output stage, and interstage coupling. Since the audio circuits of intercom systems and VHF radio equipment are quite sophisticated, the frequency controller does not involve audio amplification or other processing circuits, but only logic switching functions to reduce voice distortion and delay.

[0062] In one embodiment, the circuits of the first audio isolation circuit and the second audio isolation circuit are as follows: Figure 6 As shown, the first and second audio isolation circuits include a first interface P1, a second interface P2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first transistor Q1, a second transistor Q2, a first diode D1, and a third diode D3. A -48V DC signal is transmitted through the first interface P1 and the second interface P2. GRP4 SUP PTT is the push-to-talk signal from the super control position, and GRP4 NOR PTT is the push-to-talk signal from the frequently used position. The first transistor Q1 and the second transistor Q2 generate the GRP4 SUP PTT FPGA signal and the GRP4 NOR PTT FPGA signal, which are then transmitted to the FPGA of the control module.

[0063] Audio isolation transformers can also be installed in both the first and second data transmission paths. These transformers convert the balanced two-wire signal transmitted by the VHF radio into an unbalanced single-wire signal, or convert the unbalanced single-wire signal transmitted by the control or regular control positions into a balanced two-wire signal. Specifically, the audio isolation transformer T2 is installed in the first data receiving path. Figure 9 As shown, the balanced two-wire signal (DEVRX1+ / DEV RX1-) transmitted by the VHF radio equipment is converted into an unbalanced single-wire signal (DEV RX1) after being converted by the audio isolation transformer.

[0064] Optionally, the frequency control device also includes indicator lights, the number of which is the same as the number of channel modules, and each indicator light corresponds to a channel module. The indicator lights are connected to the control module and are used to display the channel module that issues the "press and speak" signal.

[0065] In one embodiment, there are four channel modules, including super control seats 1, 2, 3 and 4, and commonly used seats 1, 2, 3 and 4. Each channel module corresponds to an indicator light, which can emit red, yellow and green signals to indicate the object triggered by the PTT (Press and Say). The specific working logic of the indicator light display and PTT trigger is shown in Table 1.

[0066] Table 1

[0067]

[0068] Optionally, the frequency overclocking device also includes a housing, with the control module and channel module housed inside the housing. A connection port is provided on one side of the housing, through which VHF radio equipment, overclocking positions, and regular positions are connected to the channel module.

[0069] In one embodiment, the port type of the connection port includes an RJ45 port, and the connection port and the indicator light are located on the same side of the housing. Specifically, as shown... Figure 3 As shown, there are four channel modules, each corresponding to three connection ports. These three connection ports include ports for connecting to VHF radio equipment (represented as station 1, station 2, station 3, and station 4 in the diagram), ports for connecting to the super control station (represented as super control station 1, super control station 2, super control station 3, and super control station 4 in the diagram), and ports for connecting to the regular stations (represented as regular station 1, regular station 2, regular station 3, and regular station 4 in the diagram).

[0070] Optionally, the frequency control device includes a power module with a first power supply circuit. The power module includes a power port located on one side of the housing. The power module receives AC power through the power port. The first power supply circuit is connected to the push-to-talk terminal to supply power to the push-to-talk terminal.

[0071] In one embodiment, the first power supply circuit provides -48V DC power to the push-to-talk terminal, and the first power supply circuit may also be equipped with a DIP switch. When a push-to-talk terminal connected to the first power supply circuit is in a floating or high-impedance state, the DIP switch corresponding to the push-to-talk terminal is set to the "ON" state (indicating that it is working), and the first power supply circuit supplies power to the push-to-talk terminal. If the seat corresponding to the push-to-talk terminal is not equipped with an intercom device (such as a walkie-talkie), the DIP switch corresponding to the push-to-talk terminal can be set to the "OFF" state (not working), and the first power supply circuit does not supply power to the push-to-talk terminal.

[0072] Specifically, such as Figure 8 As shown, the first power supply circuit includes a first boost chip U20, a second boost chip U21, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a sixth capacitor C6, a ninety-first resistor R91, a fifth capacitor C5, a ninetieth resistor R90, and a seventh capacitor C7. The ground terminal of the first boost chip U20 is connected to the first terminal of the eighth capacitor C8, the first terminal of the ninth capacitor C9, and the first power supply terminal of the power module. The second terminal of the eighth capacitor C8 is connected to the second terminal of the ninth capacitor C9, the voltage input terminal of the first boost chip U20, and the second power supply terminal of the power module. The first voltage output terminal of the first boost chip U20 is connected to the first terminal of the ninetieth resistor R90, the first terminal of the ninety-first resistor R91, the second voltage output terminal of the second boost chip U21, and the first terminal of the sixth capacitor C6. The second terminal of the sixth capacitor C6 is connected to the sampling terminal of the second boost chip U21. The first voltage output terminal of the second boost converter chip U21 is grounded and connected to the second terminal of the ninety-first resistor R91. The first terminal of the tenth capacitor C10 is connected to the first terminal of the eleventh capacitor C11 and the ground terminal of the second boost converter chip U21. The second terminal of the tenth capacitor C10 is connected to the second terminal of the eleventh capacitor C11 and the voltage input terminal of the second boost converter chip U21. The sampling terminal of the first boost converter chip U20 is connected to the second terminal of the fifth capacitor C5. The first terminal of the fifth capacitor C5 is connected to the second voltage output terminal of the first boost converter chip U20, the second terminal of the ninetyth resistor R90, and the first terminal of the seventh capacitor C7. The second terminal of the seventh capacitor C7 is grounded. The first power supply circuit outputs -48V DC power through the first terminal of the fifth capacitor C5.

[0073] Optionally, the power module includes a backup power port and a power switch. The power switch and the backup power port are located on the same side of the housing. The power module receives DC power through the backup power port.

[0074] In one embodiment, the device receives 220V, 50Hz AC power through the power port and 12V DC power through the backup power port. When there is no AC power input at the power port, the frequency control device can operate using the DC power transmitted from the backup power port.

[0075] Specifically, the power module also includes voltage conversion circuits, such as... Figure 4 As shown, the voltage conversion circuit is connected to the backup power port and includes a ninth interface P9, a tenth interface P10, a twenty-first diode D21, a twenty-fifth diode D25, a twenty-second resistor R22, a filter T1, a third capacitor C3, a second capacitor C2, a switching regulator U19, a twenty-fourth diode D24, a first inductor L1, a fourth capacitor C4, a first capacitor C1, a twenty-third diode D23, and an eighty-first resistor R81. The ninth interface P9 and the tenth interface P10 are connected to the backup power interface. The 12V DC power transmitted from the backup power interface is converted by the voltage conversion circuit to output 5V DC power, which is then supplied to other electronic components of the frequency control device to power them.

[0076] The frequency control device of this application will be further explained below through the working process of the frequency control device.

[0077] In one embodiment, there are four channel modules. When a user in the over-control position presses the microphone PTT, the over-control position sends a "push-to-talk" signal. The control module then disconnects the commonly used channel from the over-control position, establishing communication between the over-control position and the VHF radio equipment. When the over-control position preempts a channel, voice is also transmitted to the commonly used user, establishing an internal communication loop within the frequency controller. After the over-control position releases the microphone PTT, normal communication resumes for the commonly used user. The over-control user and the commonly used user share the receiving channel. If the frequency controller loses power or has no power output, the commonly used user maintains normal transmission and reception, but the over-control position cannot communicate, and the over-control function fails. The frequency controller illuminates the corresponding indicator light based on the channel preemption status. The connection between the VHF radio equipment and the user's position uses a four-wire E&M connection with a standard RJ45 connector.

[0078] In this embodiment of the civil aviation VHF communication system, the frequency overriding device has a control module connected to a channel module. The channel module is connected to at least one VHF radio device of the civil aviation VHF communication system. The channel module includes a first data transmission path and a second data transmission path. The VHF radio device is connected to the overriding seat unit through the first data transmission path and to the frequently used seat unit through the second data transmission path. Both the first and second data transmission paths are equipped with control switches connected to the control module. Both the overriding seat and the frequently used seat are equipped with push-to-talk terminals. The control module is connected to the control switches and is used to prevent the first data transmission path from sending data to the VHF radio device when it receives a push-to-talk signal transmitted from the push-to-talk terminal of the overriding seat unit through the channel module. This embodiment of the application can achieve rapid preemption of calls by the overriding seat without changing the intercom system of the overriding seat and the frequently used seat. The equipment cost is low, the preemption speed is fast, and the efficiency is high, thereby effectively ensuring the safe operation of civil aviation air traffic control.

[0079] The terms "first," "second," "third," "fourth," "1," "2," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than that shown in the figures or text.

[0080] It should be understood that although arrows indicate various operation steps in the flowcharts of this application's embodiments, the order in which these steps are implemented is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of this application's embodiments, the implementation steps in each flowchart can be executed in other orders as required. Furthermore, some or all steps in each flowchart, based on the actual implementation scenario, may include multiple sub-steps or multiple stages. Some or all of these sub-steps or stages can be executed at the same time, and each sub-step or stage can also be executed at different times. In scenarios where execution times differ, the execution order of these sub-steps or stages can be flexibly configured according to requirements, and this application's embodiments do not limit this.

[0081] The above description is only an optional implementation method for some implementation scenarios of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application without departing from the technical concept of this application also fall within the protection scope of the embodiments of this application.

Claims

1. A frequency over-control device for a civil aviation VHF communication system, characterized in that, It includes a control module and at least one channel module, wherein the control module is connected to the channel module, and the channel module is connected to at least one VHF radio device of the civil aviation VHF communication system. The channel module includes a first data transmission path and a second data transmission path. The VHF radio equipment is connected to the super control seat unit through the first data transmission path and to the commonly used seat unit through the second data transmission path. Both the first data transmission path and the second data transmission path are equipped with control switches connected to the control module. Both the super control seat and the commonly used seat are equipped with a press-to-talk terminal. The control module is connected to the control switch. When the control module receives the push-to-talk signal transmitted by the push-to-talk terminal of the super control seat unit through the channel module, it uses the control switch to prevent the first data transmission path from sending data to the VHF radio equipment.

2. The frequency over-control device for a civil aviation VHF communication system according to claim 1, characterized in that, The first data transmission path includes a first data receiving path, and the second data transmission path includes a second data receiving path. The second end of the first data receiving path is connected to the data receiving end of the super control seat, and the second end of the second data receiving path is connected to the data receiving end of the commonly used seat. The first end of the first data receiving path and the second end of the second data receiving path are both connected to the data receiving end of the VHF radio equipment.

3. The frequency over-control device for a civil aviation VHF communication system according to claim 1, characterized in that, The first data transmission path includes a first data transmission path, and the second data transmission path includes a second data transmission path. The first end of the first data transmission path and the first end of the second data transmission path are connected to the data transmission end of the VHF radio equipment. The second end of the first data transmission path is connected to the data transmission end of the super control seat, and the second end of the second data transmission path is connected to the data transmission end of the commonly used seat. The control switch includes a data transmission switch, which is disposed in the first data transmission path and the second data transmission path. The control module is connected to the data transmission switch to control the on / off state of the first data transmission path and the second data transmission path.

4. The frequency over-control device for a civil aviation VHF communication system according to claim 1, characterized in that, The channel module includes a push-to-talk channel, which is connected to the control module, the push-to-talk terminal of the super control seat, the push-to-talk terminal of the frequently used seat, and the push-to-talk terminal of the VHF radio. The control switch includes a push-to-talk control switch, which is disposed in the push-to-talk channel and connected to the control module. The push-to-talk switch is used to disconnect the push-to-talk terminal of the frequently used seat from the push-to-talk terminal of the VHF radio after receiving the over-control command from the control module.

5. The frequency over-control device for a civil aviation VHF communication system according to claim 4, characterized in that, The press-to-talk channel includes a first level conversion circuit, a first audio isolation circuit, a second level conversion circuit, and a second audio isolation circuit. The second terminal of the first level conversion circuit is connected to the press-to-talk terminal of the super control seat. The first terminal of the first level conversion circuit is connected to the second terminal of the first audio isolation circuit. The first terminal of the first audio isolation circuit is connected to the control module. The second terminal of the second level conversion circuit is connected to the press-and-talk terminal of the commonly used seat, the first terminal of the second level conversion circuit is connected to the second terminal of the second audio isolation circuit, and the first terminal of the second audio isolation circuit is connected to the control module.

6. The frequency over-control device for a civil aviation VHF communication system according to claim 1, characterized in that, It also includes indicator lights, the number of which is the same as the number of channel modules, and each indicator light corresponds one-to-one with a channel module. The indicator lights are connected to the control module and are used to display the channel module that issues the "press and speak" signal.

7. The frequency over-control device for a civil aviation VHF communication system according to claim 6, characterized in that, The device includes a housing, and the control module and the channel module are disposed within the housing. A connection port is provided on one side of the housing, and the VHF radio equipment, the super control seat, and the commonly used seat are connected to the channel module through the connection port.

8. The frequency over-control device for a civil aviation VHF communication system according to claim 7, characterized in that, The connection port includes an RJ45 port, and the connection port and the indicator light are located on the same side of the housing.

9. The frequency over-control device for a civil aviation VHF communication system according to claim 7, characterized in that, The device includes a power module with a first power supply circuit. The power module includes a power port located on one side of the housing. The power module receives AC power through the power port. The first power supply circuit is connected to the on-demand terminal to supply power to the on-demand terminal.

10. The frequency over-control device for a civil aviation VHF communication system according to claim 9, characterized in that, The power module includes a backup power port and a power switch. The power switch, the backup power port, and the power port are located on the same side of the housing. The power module receives DC power through the backup power port.

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