CN218350732U - Antenna switching device for three channels of transmitter - Google Patents
Antenna switching device for three channels of transmitter Download PDFInfo
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- CN218350732U CN218350732U CN202221548333.4U CN202221548333U CN218350732U CN 218350732 U CN218350732 U CN 218350732U CN 202221548333 U CN202221548333 U CN 202221548333U CN 218350732 U CN218350732 U CN 218350732U
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Abstract
The utility model discloses an antenna switching device for three routes of channels of a transmitter, which comprises a power supply module, an antenna control module, a dummy load control module, an antenna key interlocking control circuit, a dummy load key interlocking control circuit, a transmitter main frame sampling module, a transmitter first standby machine sampling module, a transmitter second standby machine sampling module, a relay mainboard, an antenna and a dummy load; an interlocking control circuit is integrated in the relay mainboard; the interlock control circuit includes an antenna relay set and a dummy load relay set. The utility model discloses relay control adopts the mechanical interlocking mode, and the reliability is high, has automatic/manual switching function, can discern the host and standby machine behavior under automatic mode, switches through the button under the manual mode, need not frequent plug feeder head.
Description
Technical Field
The utility model relates to an antenna switching especially relates to an antenna switching device for transmitter three routes passageway.
Background
For various reasons, a news broadcast station needs to transmit a large number of broadcast tasks with different frequencies, and a transmitter needs to generate signals and transmit the signals through an antenna to complete the transmission task.
The medium wave transmitting station uses 2 to 3 medium wave transmitters for one program, one main transmitter and one spare transmitter or one main transmitter and two spare transmitters, the main transmitter is used for transmitting under normal condition, when the host machine is in failure, the spare transmitter is started, the transmitter is connected with the antenna tower through an antenna feeder line, and meanwhile, a dummy load is connected. When the host computer and the standby computer are switched, the switching of the antenna and the dummy load is completely operated by manpower, the operation is complex and easy to make mistakes, the operation is very inconvenient, and the service life is influenced by frequently plugging and unplugging the feeder line head, so that equipment capable of automatically identifying the working condition of the host computer and the standby computer and automatically switching the antenna is needed, and three paths of antennas and the dummy load are automatically switched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides an antenna auto-change over device for transmitter three routes passageway, and relay control adopts mechanical interlocking mode, and the reliability is high, has automatic/manual switching function, can discern the host and standby machine behavior under automatic mode, switches through the button under the manual mode, need not frequent plug feeder head.
The purpose of the utility model is realized through the following technical scheme: an antenna switching device for three channels of a transmitter comprises a power supply module, an antenna control module, a dummy load control module, an antenna key interlocking control circuit, a dummy load key interlocking control circuit, a transmitter host sampling module, a transmitter first standby machine sampling module, a transmitter second standby machine sampling module, a relay mainboard, an antenna and a dummy load;
an interlocking control circuit is integrated in the relay mainboard; the interlocking control circuit comprises an antenna relay group and a dummy load relay group; the antenna relay group comprises an antenna main machine relay, an antenna first standby machine relay and an antenna second standby machine relay which are interlocked; the dummy load relay group comprises a dummy load host relay, a dummy load first standby relay and a dummy load second standby relay which are interlocked; the antenna host relay and the dummy load host relay are respectively connected with the transmitter host sampling module; the antenna first standby machine relay and the dummy load first standby machine relay are respectively connected with the transmitter first standby machine sampling module; the antenna second standby machine relay and the dummy load second standby machine relay are respectively connected with a transmitter second standby machine sampling module; the second standby antenna relay is also connected with an antenna, and the second standby dummy load relay is also connected with a dummy load;
the output end of the power supply module is respectively connected with the antenna control module and the dummy load control module;
the antenna control module comprises an automatic/manual switching button I, a host machine selection button I, a first standby machine selection button I and a second standby machine selection button I, wherein the input end of the automatic/manual switching button I is connected with the power supply module, and the output end of the automatic/manual switching button I is respectively connected with the host machine selection button I, the first standby machine selection button I, the second standby machine selection button I and an antenna relay group in the interlocking control circuit; the output ends of the first host machine selection button, the first standby machine selection button and the second standby machine selection button are connected with an antenna key interlocking control circuit, and the output end of the antenna key interlocking control circuit is connected with an antenna;
the dummy load control module comprises an automatic/manual switching button II, a host machine selection button II, a first standby machine selection button II and a second standby machine selection button II, the input end of the automatic/manual switching button II is connected with the power supply module, and the output end of the automatic/manual switching button II is respectively connected with the host machine selection button II, the first standby machine selection button II, the second standby machine selection button II and a dummy load relay group in the interlocking control circuit; and the output ends of the host machine selection button II, the first standby machine selection button II and the second standby machine selection button II are connected with the dummy load key interlocking control circuit, and the output end of the dummy load key interlocking control circuit is connected with the dummy load.
Preferably, the antenna switching device further comprises a first LED indicator lamp, the first LED indicator lamp is connected between the antenna second standby relay and the antenna, the antenna switching device further comprises a second LED indicator lamp, and the second LED indicator lamp is connected between the dummy load second standby relay and the dummy load.
Preferably, the power supply module comprises a220V AC power supply and an AC/DC conversion module, the 220V AC power supply output terminal is connected to the AC/DC conversion module, the AC/DC conversion module converts the power supply into a 24V DC power supply, and the output terminal of the AD/DC conversion module is connected to the antenna control module and the dummy load control module.
The utility model has the advantages that: the utility model can automatically identify the transmitting condition of the transmitter in the automatic mode, automatically switch the antenna or the dummy load to the working transmitter, and also can switch the antenna or the dummy load to the manual mode; the whole control circuit is completely controlled by the interlocking of the relays, is very safe and reliable, does not fear various extreme conditions, and has extremely strong reliability and anti-interference capability.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic diagram of an interlock control circuit;
fig. 3 is a schematic diagram of the antenna/dummy load control module and the antenna/dummy load key interlock control circuit.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following descriptions.
As shown in fig. 1, an antenna switching apparatus for three channels of a transmitter includes a power supply module, an antenna control module, a dummy load control module, an antenna key interlock control circuit, a dummy load key interlock control circuit, a transmitter main unit sampling module, a transmitter first standby unit sampling module, a transmitter second standby unit sampling module, a relay main board, an antenna, and a dummy load;
an interlocking control circuit is integrated in the relay mainboard; the interlocking control circuit comprises an antenna relay group and a dummy load relay group; the antenna relay group comprises an antenna main machine relay, an antenna first standby machine relay and an antenna second standby machine relay which are interlocked; the dummy load relay group comprises a dummy load host relay, a dummy load first standby relay and a dummy load second standby relay which are interlocked; the antenna host relay and the dummy load host relay are respectively connected with the transmitter host sampling module; the antenna first standby relay and the dummy load first standby relay are respectively connected with the transmitter first standby sampling module; the antenna second standby machine relay and the dummy load second standby machine relay are respectively connected with a transmitter second standby machine sampling module; the antenna second standby relay is also connected with the antenna, and the dummy load second standby relay is also connected with the dummy load;
the output end of the power supply module is respectively connected with the antenna control module and the dummy load control module;
the antenna control module comprises an automatic/manual switching button I, a host machine selection button I, a first standby machine selection button I and a second standby machine selection button I, wherein the input end of the automatic/manual switching button I is connected with the power supply module, and the output end of the automatic/manual switching button I is respectively connected with the host machine selection button I, the first standby machine selection button I, the second standby machine selection button I and an antenna relay group in the interlocking control circuit; the output ends of the first host machine selection button, the first standby machine selection button and the second standby machine selection button are all connected with the antenna key interlocking control circuit, and the output end of the antenna key interlocking control circuit is connected with the antenna;
the dummy load control module comprises an automatic/manual switching button II, a host machine selection button II, a first standby machine selection button II and a second standby machine selection button II, the input end of the automatic/manual switching button II is connected with the power supply module, and the output end of the automatic/manual switching button II is respectively connected with the host machine selection button II, the first standby machine selection button II, the second standby machine selection button II and a dummy load relay group in the interlocking control circuit; and the output ends of the host machine selection button II, the first standby machine selection button II and the second standby machine selection button II are connected with the dummy load key interlocking control circuit, and the output end of the dummy load key interlocking control circuit is connected with the dummy load.
The automatic/manual switching button I is used for a user to select an automatic mode or a manual mode, and the power supply module is connected with an antenna relay in the interlocking control circuit in an automatic mode; in the manual mode, the power supply module is communicated with a first host machine selection button, a first standby machine selection button and a second standby machine selection button. The automatic/manual switching button is used for a user to select an automatic mode or a manual mode, and the power supply module is communicated with the dummy load relay group in the interlocking control circuit in the automatic mode; and in the manual mode, the power supply module is communicated with the second host machine selection button, the second first standby machine selection button and the second standby machine selection button. The first automatic/manual switching button and the second automatic/manual switching button are equivalent to the functions of the switch, and the button is pressed or bounced to control the switch to gate different power supply paths.
The connections of the various relays in the interlock control circuit are shown in FIG. 2; the antenna/dummy load control module and the antenna/dummy load key interlock control circuit are shown in fig. 3;
in the present application, the switch is composed of six sets of 4X2 relays (in the relay motherboard) and six sets of vacuum electromagnetic relays (in the antenna key interlock control circuit and the dummy load key interlock control circuit), for a total of 12 sets of relays. The switcher is designed to be fully mechanically interlocked, three channels in the relay mainboard are used for interlocking the output of the antenna, and the three channels are completed by three groups of relays on the relay mainboard. The output of the dummy load is also designed to be fully mechanically interlocked, and the output of the dummy load is interlocked by the three channels and is completed by three groups of relays below the relay board. The automatic and manual control functions are realized by four-position interlocking key switches on the panel.
In the automatic mode, in the three-way switching of the main machine, the standby machine 1 and the standby machine 2, when one of the two ways is started, the corresponding vacuum switch is attracted and connected with the antenna, and the other two ways are blocked. In the process of connecting with the antenna, only the first starter switches on the antenna, and the later starter is connected into the dummy load and also blocks the output of the dummy loads of other two paths. If the host is connected to the antenna when the host is started, the standby machine 1 and the standby machine 2 can not be connected to the antenna, at the moment, the standby machine 1 and the standby machine 2 are started, only the first-started machine is connected to the dummy load, and the others are blocked. That is, the host, the standby 1, and the standby 2, the first boot-up goes to the antenna, the second boot-up goes to the dummy load, and the third boot-up cannot go to the antenna and the dummy load. Since there is only one dummy load, only two of the three transmitters can be operated.
Four-position interlocking key switches are arranged on the panel and are respectively automatic/manual, host, standby 1 and standby 2. In the manual mode, the antenna and the dummy load are operated by two independent manual controls.
In the embodiments of the present application, six 4X2 relays and associated interfaces are illustrated as follows:
TA in the relay mainboard is connected to TA of the button switch through a flat cable, TB in the relay mainboard is connected to TB of the button switch through a flat cable, and a 24V switch power supply is a power supply module in figure 1 and converts 220V commercial power into 24V power supply to supply power to the whole system.
J1 is the 220V/24V binding post of power module, and J1 draws out the 220V24V of power module with the terminal and conveniently maintains the debugging.
And K1-24V, providing an electrical interface for the antenna relay set, and switching whether to provide 24V power supply or not through an antenna control button (an automatic/manual switching button I). Connected to the antenna relay group by the antenna control button in fig. 3
And K2-24V, namely, a power supply interface is provided for the dummy load relay set, and whether a 24V power supply is provided is switched through a dummy load control button (an automatic/manual switching button II). Connected to a dummy load relay group by a dummy load control button in fig. 3
Six 4X2 relays:
A220V starting signal of the transmitter A is connected to a K1 normally closed contact of a spare antenna 2 (K2) to a K2 public end through a J1 access antenna, the K2 public end is connected to the K1 normally closed contact of the spare antenna 1 (K2) to the K1 public end through a PCB (printed circuit board) wire, and then the K1 normally closed contact of the spare antenna 1 (K2) is connected to a main antenna (K1) coil to a220V zero line N through the PCB wire. Transmitter a220V power-on signal second connection path: A220V starting signal of the transmitter is connected to a KA normally closed contact of an antenna main (K1) to a KA common end through a J1, the common end is connected to a K1 normally closed contact of a load backup 2 (K6) to the K1 common end through a PCB wiring, and then the K1 normally closed contact of the load backup 1 (K5) to the K1 common end are connected to a load main (K4) coil to a220V zero line N through the PCB wiring.
A220V starting signal of the transmitter B is connected to a K1 common end of the antenna main (K1) to a K1 normally closed contact of the antenna main (K1) through J1, is connected to a K2 normally closed contact of the antenna standby 2 (K2) through a PCB (printed circuit board) wire, and is connected to a coil of the antenna standby 1 (K2) to a220V zero line N through the PCB wire. Transmitter B220V power-on signal second connection path: A220V starting signal of the transmitter B is connected to a KA normally closed contact of the standby antenna 1 (K2) to a KA public end through the J1, then is connected to a K1 normally open contact of the main load (K4) to a K1 public end through a PCB (printed circuit board) line, the K1 public end is connected to a K2 normally closed contact of the standby load 2 (K6) to a K2 public end through a PCB line, and then is connected to a coil of the standby load 1 (K5) to a220V zero line N through a PCB line.
A C220V starting signal of the transmitter is connected to a K2 public end to a K2 normally closed contact of the antenna main (K1) through the J1, the K2 normally closed contact is connected to a K2 public end to a K2 normally closed contact of the antenna standby 1 (K2) through a PCB wiring, and then the K2 public end to a220V zero line N through a PCB wiring antenna standby 2 (K2) coil. Transmitter B220V power-on signal second connection path: a C220V starting signal of the transmitter is connected to a KA common end of the antenna standby device 2 (K2) to a KA normally closed contact through a J1 access antenna, the KA normally closed contact is connected to a K2 normally closed contact to a K2 common end of the load standby device 1 (K5) through a PCB (printed circuit board) line, the K2 common end is connected to a K2 normally closed contact to a K2 common end of a load main device (K4) through a PCB line, and the K2 common end is connected to a coil of the load standby device 2 (K6) to a220V zero line N through a PCB line.
Connections between K1-24V K2-24V and six 4X2 relays:
K1-24V are responsible for antenna owner (K1) antenna and are equipped with the power supply that 1 (K2) antenna was equipped with 2 (K2), K1-24V are through K0 public end to K0 normally open contact of antenna owner (K1), K0 normally open contact reconnection to TB interface A2, K1-24V are equipped with K0 public end to K0 normally open contact of 1 (K2) through the antenna, K0 normally open contact reconnection to TB interface B2
K1-24V is connected to a K0 normally open contact through a K0 public end of an antenna backup 2 (K2), and the K0 normally open contact is connected to a TB interface C2
K2-24V are responsible for the load owner (K4) load and are equipped with the power supply that 1 (K5) load was equipped with 2 (K6), K2-24V are through the K0 public end to the K0 normally open contact of load owner (K4), K0 normally open contact reconnection to TA interface A1, K2-24V are through the K0 public end to the K0 normally open contact of load owner (K5), K0 normally open contact reconnection to TA interface B1
K2-24V are connected to a K0 normally open contact through a K0 public end of the load equipment 2 (K6), and the K0 normally open contact is connected to the TA interface C1.
Automatic mode: the antenna output on the panel and key automatic/manual switches (corresponding to KPA and KPB in figure 3) on two sides of the dummy load are all pressed, 24V power supply is respectively connected to interlocking relay power supply ports K1-24 and K2-24V of a relay main board through KPA and KPB, and 24V power supply of the manual key is blocked, all transmitter sampling circuits are all effective at the moment (the interlocking relay power supply ports K1-24 and the 24V power supply of K2-24V are bound with the transmitter sampling circuits, and the 24V effective transmitter sampling circuits of K1-24 and K2-24V are only effective), the switcher works in an automatic state, and the antenna and the dummy load are respectively connected according to the starting sequence.
Manual mode: the antenna output and the key automatic/manual switches (corresponding to KPA and KPB in a schematic diagram) on two sides of the dummy load are all bounced, a 24V power supply in the diagram of the KPA is connected to a first host machine selection button, a first standby machine selection button and a first second standby machine selection button, and a 24V power supply in the diagram of the KPB is connected to a second host machine selection button, a second first standby machine selection button and a second standby machine selection button; and then, the interlocking control circuit of the antenna/dummy load key is selected to be accessed by switching on and switching off six selection buttons, and meanwhile, the power supply ports K1-24 and K2-24V of the interlocking relay power supply of the relay mainboard are switched off, all the transmitter sampling circuits are invalid at the moment, and the switcher works in a manual mode. When the manual operation is carried out, the corresponding key is pressed down, the corresponding channel is correspondingly connected, and the automatic function is invalid. As shown in fig. 3, pressing antenna output side host computer key KP1, 24V power supply is through receiving host computer vacuum relay KQ1 coil port A1 with KP1, and host computer vacuum relay KQ1 coil gets the electricity normally open contact closure, then transmitter a radio frequency output signal a and antenna intercommunication, if pressing antenna output side if like this and being equipped with 1 key, then be equipped with 1 radio frequency output and antenna intercommunication, can select here with according to actual requirement. The resistive load is similar to the keys.
In a manual state, all the main machines and the standby machines fail to start up, sampling and control are disabled, selection from the antenna to the resistance load is controlled by an operator, and common conduction is avoided in the using process. The manual mode is generally used only for service and special cases.
When the auto key is depressed, key 1 will turn off the 24V manual voltage, all manual overrides. When any key of the main machine, the standby machine 1 and the standby machine 2 is pressed, the keys 1 bounce to communicate 24V manual voltage, and output is controlled correspondingly. In the non-manual required state, please press automatically/manually.
An interlock circuit: in an automatic mode, when a starting signal of a transmitter A arrives, the starting signal of the transmitter A passes through a normally closed contact K1 in an antenna backup 2 relay K3-an antenna backup 1 relay K1-a normally closed contact K1 in the antenna backup 1 relay K2-a coil of the antenna main relay K1 to a220V zero line, the coil of the antenna main relay K1 is electrified, a K0 normally open contact in the antenna main relay K1 is closed at the moment, 24V power supply of the K1-24V is transmitted to a coil port A1 of a host vacuum relay KQ1 through the A1, the coil of the host vacuum relay KQ1 is electrified to be closed, a radio frequency output signal a of the transmitter A is communicated with an antenna, the coil of the antenna main relay K1 is electrified, the normally closed contact in the antenna main relay K1 is changed from normally closed to open, the starting signal of the KA transmitter A cannot pass through the coil of the K1 normally closed contact of the antenna backup 2 relay K6-the normally closed contact-load backup 1K 5 relay K1 to obtain a pseudo-output power signal of the transmitting relay K4A, and the transmitting signal of the transmitting relay A cannot be output to the pseudo-A2 relay. Namely, the interlocking of the antenna output and the corresponding dummy load output is realized (the same principle of interlocking the antenna output and the dummy load output when the transmitter B is started up and the transmitter C is started up),
if when a starting signal of a transmitter B arrives, because the coil of the antenna main relay K1 is electrified at the moment, the normally closed K1 contact of the antenna main relay K1 is changed into off, the starting signal of the transmitter B cannot be transmitted to a220V zero line through the K1 normally closed contact of the antenna main relay K1, the K2 normally closed contact of the antenna standby 2 relay K3 and the coil of the antenna standby 1 relay K3 (at the moment, the coil of the antenna standby 1 relay cannot obtain 24V power supply of a B2 port where the starting signal of the transmitter B cannot be output KQ2, and the audio power signal B of the transmitter B cannot be output to the antenna). A starting signal of a transmitter B can only pass through a KA normally closed contact of an antenna backup relay K2-a K1 normally closed contact of a load main relay K4-a K2 normally closed contact of a load backup relay K6-a coil of a load backup relay K5 to a220V zero line, the coil of the load backup relay K5 is electrified, a K0 normally open contact of the load backup relay K5 is closed, a 24V control signal is output to the transmitter B2, a KQ5 relay coil is electrified, and a KQ5 normally open contact is closed to output an audio power signal B of the transmitter B to a dummy load. (the mutual blocking between the starting signal of the transmitter A and the starting signal of the transmitter B is realized by blocking the path from the transmitter A to the antenna firstly and from the transmitter B to the antenna firstly, and then starting the transmitter B to access the dummy load, and the mutual interlocking of the other two starting signals is the same)
If when a starting signal of a transmitter C arrives, because the coil of the antenna main relay K1 and the coil of the load backup relay K5 are electrified at the moment, the K2 normally closed contact of the antenna main relay K1 and the K2 normally closed contact of the load backup relay K5 are both closed and disconnected, at the moment, the starting signal of the transmitter C cannot reach the zero line of 220V through the K2 normally closed contact of the antenna main relay K1, the K2 normally closed contact of the antenna backup relay K2, the coil of the antenna backup relay K3 and the zero line of 220V, and cannot reach the zero line of 220V through the KA normally closed contact of the antenna backup relay K3, the K2 normally closed contact of the load backup relay K5, the K2 normally closed contact of the load backup relay K4, the coil of the load backup relay K6 and the zero line of 220V. When the starting signal of the transmitter A and the starting signal of the transmitter B come successively, the paths from the starting signal of the transmitter C to the antenna and the dummy load are all blocked, namely, the third starter can not reach the antenna and the dummy load
Through the interlocking circuit, the host, the standby machine 1 and the standby machine 2, the first boot machine arrives at the antenna, the second boot machine arrives at the dummy load, and the third boot machine can not arrive at the antenna and the dummy load.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. An antenna switching apparatus for three channels of a transmitter, comprising: the device comprises a power supply module, an antenna control module, a dummy load control module, an antenna key interlocking control circuit, a dummy load key interlocking control circuit, a transmitter host sampling module, a transmitter first standby machine sampling module, a transmitter second standby machine sampling module, a relay mainboard, an antenna and a dummy load;
an interlocking control circuit is integrated in the relay mainboard; the interlocking control circuit comprises an antenna relay group and a dummy load relay group; the antenna relay group comprises an antenna main machine relay, an antenna first standby machine relay and an antenna second standby machine relay which are interlocked; the dummy load relay group comprises a dummy load host relay, a dummy load first standby relay and a dummy load second standby relay which are interlocked; the antenna host relay and the dummy load host relay are respectively connected with the transmitter host sampling module; the antenna first standby relay and the dummy load first standby relay are respectively connected with the transmitter first standby sampling module; the antenna second standby machine relay and the dummy load second standby machine relay are respectively connected with a transmitter second standby machine sampling module; the antenna second standby relay is also connected with the antenna, and the dummy load second standby relay is also connected with the dummy load;
the output end of the power supply module is respectively connected with the antenna control module and the dummy load control module;
the antenna control module comprises an automatic/manual switching button I, a host machine selection button I, a first standby machine selection button I and a second standby machine selection button I, wherein the input end of the automatic/manual switching button I is connected with the power supply module, and the output end of the automatic/manual switching button I is respectively connected with the host machine selection button I, the first standby machine selection button I, the second standby machine selection button I and an antenna relay group in the interlocking control circuit; the output ends of the first host machine selection button, the first standby machine selection button and the second standby machine selection button are all connected with the antenna key interlocking control circuit, and the output end of the antenna key interlocking control circuit is connected with the antenna;
the dummy load control module comprises an automatic/manual switching button II, a host machine selection button II, a first standby machine selection button II and a second standby machine selection button II, the input end of the automatic/manual switching button II is connected with the power supply module, and the output end of the automatic/manual switching button II is respectively connected with the host machine selection button II, the first standby machine selection button II, the second standby machine selection button II and a dummy load relay group in the interlocking control circuit; and the output ends of the host machine selection button II, the first standby machine selection button II and the second standby machine selection button II are connected with the dummy load key interlocking control circuit, and the output end of the dummy load key interlocking control circuit is connected with the dummy load.
2. The antenna switching apparatus for a transmitter three-way path according to claim 1, wherein: the antenna switching device further comprises a first LED indicating lamp, and the first LED indicating lamp is connected between the antenna second standby relay and the antenna.
3. The antenna switching apparatus for a transmitter three-way path according to claim 1, wherein: the antenna switching device further comprises a second LED indicator light, and the second LED indicator light is connected between the dummy load second standby relay and the dummy load.
4. The antenna switching apparatus for a transmitter three-way path according to claim 1, wherein: the power supply module comprises a220V AC power supply and an AC/DC conversion module, wherein the 220V AC power supply output end is connected with the AC/DC conversion module, the AC/DC conversion module converts the power supply into a 24V DC power supply, and the output end of the AC/DC conversion module is connected with the antenna control module and the dummy load control module.
5. The antenna switching apparatus for a transmitter three-way path according to claim 1, wherein: the automatic/manual switching button I is used for a user to select an automatic mode or a manual mode, and the power supply module is connected with an antenna relay in the interlocking control circuit in an automatic mode; and in the manual mode, the power supply module is communicated with the first host machine selection button, the first standby machine selection button and the second standby machine selection button.
6. The antenna switching apparatus for a transmitter three-way path according to claim 1, wherein: the automatic/manual switching button is used for a user to select an automatic mode or a manual mode, and the power supply module is communicated with the dummy load relay group in the interlocking control circuit in the automatic mode; and in the manual mode, the power supply module is communicated with the second host machine selection button, the second first standby machine selection button and the second standby machine selection button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221548333.4U CN218350732U (en) | 2022-06-20 | 2022-06-20 | Antenna switching device for three channels of transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221548333.4U CN218350732U (en) | 2022-06-20 | 2022-06-20 | Antenna switching device for three channels of transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218350732U true CN218350732U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221548333.4U Active CN218350732U (en) | 2022-06-20 | 2022-06-20 | Antenna switching device for three channels of transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218350732U (en) |
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2022
- 2022-06-20 CN CN202221548333.4U patent/CN218350732U/en active Active
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