CN219577064U

CN219577064U - Multichannel radio frequency switch switching device

Info

Publication number: CN219577064U
Application number: CN202320228217.2U
Authority: CN
Inventors: 黄卫民
Original assignee: Guangzhou Saiao Automation Technology Co ltd
Current assignee: Guangzhou Saiao Automation Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-08-22
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses a multichannel radio frequency switch switching device, which comprises a power management module, an input/output module, a microcontroller and a network port communication module, wherein the power management module is respectively and electrically connected with the input/output module, the microcontroller and the network port communication module; the input/output module comprises a radio frequency switch chip, a choke inductance input end and a plurality of coax devices, and the coax devices are respectively connected with a plurality of radio frequency interfaces of the multi-channel radio frequency switch chip, so that six-channel polling transmission of radio frequency signals can be realized through mutually switching channels, the problem that the existing radio frequency signal processing device cannot receive the multi-channel radio frequency signals is solved, the wiring is not required to be replaced in the test process, the test operation is convenient, and the single multi-channel radio frequency switch chip is adopted to be respectively connected with the coax devices, so that the cost of electronic components is saved, and the volume of a hardware circuit is reduced.

Description

Multichannel radio frequency switch switching device

Technical Field

The utility model relates to the field of radio frequency signal processing devices, in particular to a multichannel radio frequency switch switching device.

Background

At present, most radio frequency signal processing devices can only receive radio frequency signals in a single channel, when the radio frequency signal processing devices are used for testing multipath radio frequency signals, operators are required to manually replace accessed radio frequency wires, so that the testing process is troublesome in operation, easy to make mistakes and inconvenient to use. Therefore, the existing radio frequency signal processing device also uses a plurality of radio frequency chips and a plurality of amplifiers in a combined way, so that each group of radio frequency chips and amplifiers can receive one radio frequency signal, thereby realizing the receiving of the multi-channel radio frequency signal, but the combination way can cause the large volume and high price of a hardware circuit.

Disclosure of Invention

The present utility model is directed to a multi-channel rf switch switching device, which solves one or more of the above-mentioned problems in the prior art.

To achieve the purpose, the utility model adopts the following technical scheme:

the multi-channel radio frequency switch switching device comprises a power management module, an input/output module, a microcontroller and a network port communication module, wherein the power management module is respectively and electrically connected with the input/output module, the microcontroller and the network port communication module, the network port communication module is electrically connected with the microcontroller, and the network port communication module is used for being in communication connection with external equipment;

the input-output module comprises a radio frequency switch chip, a choke inductance input end, a first coaxial device, a second coaxial device, a third coaxial device, a fourth coaxial device, a fifth coaxial device, a sixth coaxial device and a seventh coaxial device, wherein the choke inductance input end is used for providing choke inductance for the first coaxial device, the second coaxial device, the third coaxial device, the fourth coaxial device, the fifth coaxial device, the sixth coaxial device and the seventh coaxial device; the radio frequency switch chip is provided with a radio frequency public port and a plurality of radio frequency interfaces, the radio frequency interfaces of the radio frequency switch chip are respectively and electrically connected with the first coaxial, the second coaxial, the third coaxial, the fourth coaxial, the fifth coaxial and the seventh coaxial, the sixth coaxial is electrically connected with the radio frequency public port of the radio frequency switch chip, and the control port of the radio frequency switch chip is electrically connected with the microcontroller.

Preferably, the radio frequency switch further comprises a plug connector, wherein the plug connector is electrically connected with a control port of the radio frequency switch chip.

Preferably, the radio frequency switch further comprises an inverter, wherein the input end of the inverter is electrically connected with the plug connector, and the output end of the inverter is electrically connected with the control port of the radio frequency switch chip.

Preferably, the power management module comprises a first conversion circuit and a second conversion circuit, wherein the output end of the first conversion circuit is respectively and electrically connected with the input end of the second conversion circuit and the input end of the choke inductor, and the output end of the second conversion circuit is electrically connected with the radio frequency switch chip, the microcontroller and the network port communication module; the first conversion circuit is used for converting VDD12V input voltage into +5V output voltage, and the second conversion circuit is used for converting +5V input voltage into +3.3V output voltage.

Preferably, the first conversion circuit comprises a first power chip, the second conversion circuit comprises a second power chip, the first power chip is an LM2596-5V chip, and the second power chip is an LM1117 chip.

Preferably, the radio frequency switch chip is a PE42562 radio frequency chip.

Preferably, the microcontroller is an M483SGCAE chip.

Preferably, the network port communication module comprises a transceiver and a communication interface, the transceiver is respectively electrically connected with the communication interface and the microcontroller, and the transceiver adopts a MAX3232 transceiver.

Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts a single multi-channel radio frequency switch chip to be respectively connected with the plurality of coax devices, and a plurality of amplifiers are not needed to be additionally arranged, so that the number of electronic components is reduced, the cost of the electronic components is saved, and the volume of a hardware circuit is reduced.

Drawings

The present utility model is further illustrated by the accompanying drawings, which are not to be construed as limiting the utility model in any way.

FIG. 1 is a schematic circuit diagram of an input/output module according to one embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of a microcontroller according to one embodiment of the present utility model;

FIG. 3 is a schematic circuit diagram of a power management module according to one embodiment of the present utility model;

fig. 4 is a schematic circuit diagram of a network port communication module according to an embodiment of the utility model.

Detailed Description

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

The multi-channel radio frequency switch switching device comprises a power management module, an input/output module, a microcontroller U3 and a network port communication module, wherein the power management module is respectively and electrically connected with the input/output module, the microcontroller U3 and the network port communication module, the network port communication module is electrically connected with the microcontroller U3, and the network port communication module is used for being in communication connection with external equipment; the power management module is used for providing power for the input/output module, the microcontroller U3 and the network port communication module; the input/output module is used for being connected with the radio frequency equipment, and the terminal of input/output module adopts electric isolation from the collection volume in the environment or to the environment output volume.

Referring to fig. 1 and 2, the input/output module includes a radio frequency switch chip U7, a choke inductance input terminal, a first coaxial device RF1, a second coaxial device RF2, a third coaxial device RF3, a fourth coaxial device RF4, a fifth coaxial device RF5, a sixth coaxial device RF6, and a seventh coaxial device RF7, where the choke inductance input terminal is configured to provide a choke inductance for the first coaxial device RF1, the second coaxial device RF2, the third coaxial device RF3, the fourth coaxial device RF4, the fifth coaxial device RF5, the sixth coaxial device RF6, and the seventh coaxial device RF 7; the radio frequency switch chip U7 is provided with a radio frequency public port and a plurality of radio frequency interfaces, the radio frequency interfaces of the radio frequency switch chip U7 are respectively and electrically connected with the first coaxial RF1, the second coaxial RF2, the third coaxial RF3, the fourth coaxial RF4, the fifth coaxial RF5 and the seventh coaxial RF7, the sixth coaxial RF6 is electrically connected with the radio frequency public port of the radio frequency switch chip U7, and the control port of the radio frequency switch chip U7 is electrically connected with the microcontroller.

The first coaxial RF1, the second coaxial RF2, the third coaxial RF3, the fourth coaxial RF4, the fifth coaxial RF5 and the seventh coaxial RF7 are respectively connected with a plurality of radio frequency interfaces of the radio frequency switch chip U7, and the sixth coaxial RF6 is connected with a radio frequency common port of the radio frequency switch chip U7, so that six-channel polling transmission radio frequency signals can be realized through mutually switching channels, the problem that the existing radio frequency signal processing device cannot receive multi-channel radio frequency signals is solved, the test process does not need to change wiring, the test operation is convenient, the single multi-channel radio frequency switch chip is respectively connected with a plurality of coax, a plurality of amplifiers are not needed to be additionally arranged, the number of electronic components is reduced, the cost of the electronic components is saved, and the size of a hardware circuit is also reduced.

Preferably, the radio frequency switch chip also comprises a plug connector J2, and the plug connector J2 is electrically connected with the control port of the radio frequency switch chip U7. Therefore, the plug connector J2 is used for being connected with the IO port of the external device, for example, when the embodiment is applied to a laboratory for testing radio frequency signals by using a spectrometer, the plug connector J2 is connected with the IO port of the spectrometer, and therefore the external device receives radio frequency signals output by the radio frequency switch chip U7.

Preferably, the device further comprises an inverter U4, wherein the input end of the inverter U4 is electrically connected with the plug connector J2, and the output end of the inverter is electrically connected with the control port of the radio frequency switch chip U7. The inverter U4 adopts an SN74HC04DR inverter, and thus, in this embodiment, the inverter U4 is connected to the IO port of the external device and the control port of the radio frequency switch chip U7, so as to play a role in avoiding interference signal crosstalk.

Preferably, referring to fig. 3, the power management module includes a first conversion circuit and a second conversion circuit, the output end of the first conversion circuit is electrically connected with the input end of the second conversion circuit and the input end of the choke inductor, and the output end of the second conversion circuit is electrically connected with the radio frequency switch chip U7, the microcontroller U3 and the network port communication module. The first conversion circuit is used for converting VDD12V input voltage into +5V output voltage, thereby providing +5V voltage for the input end of the second conversion circuit and the input end of the choke inductance; the second conversion circuit is used for converting +5V input voltage into +3.3V output voltage, so as to provide +3.3V working voltage for the radio frequency switch chip U7, the microcontroller U3 and the network port communication module. The first conversion circuit comprises a first power supply chip U12, the second conversion circuit comprises a second power supply chip U1, the first power supply chip U12 is an LM2596-5V chip, and the second power supply chip U1 is an LM1117 chip.

Preferably, the radio frequency switch chip U7 is a PE42562 radio frequency chip. The radio frequency chip can receive six paths of radio frequency signals, so that the cost of electronic components is greatly reduced. The microcontroller U3 is an M483SGCAE chip. Referring to fig. 4, the network port communication module includes a transceiver and a communication interface, the transceiver is electrically connected with the communication interface and the microcontroller U3, and the transceiver U2 adopts a MAX3232 transceiver. Therefore, the network port communication module can enable the microcontroller U3 to control the radio frequency switch chip U7 to switch channels by receiving a command issued by the PC end upper computer, so that six-channel polling transmission of radio frequency signals is realized.

The embodiment can be used for detecting ETC transaction signal equipment, and the first, second, third, fourth and fifth coax RF1, RF2, RF3, RF4, RF5 provided by the embodiment are respectively connected with five paths of radio frequency signals to be detected in the ETC transaction signal equipment, so that the upper computer can be used for controlling channel switching, and the five paths of radio frequency signals can be measured in a polling manner.

The embodiment can also be used for testing radio frequency signals in a laboratory by using a frequency spectrograph, a plurality of coax devices provided by the embodiment are respectively connected with a plurality of objects to be tested, and the switching signals of an upper computer are received by using a network port communication module, so that the objects to be tested can be measured in a polling mode and recorded, and the problems that the operation is complex and errors are easy to occur due to the fact that the radio frequency lines need to be manually replaced when the objects to be tested are more or the retest is needed in the existing laboratory are solved.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. The multichannel radio frequency switch switching device is characterized by comprising a power management module, an input/output module, a microcontroller and a network port communication module, wherein the power management module is respectively and electrically connected with the input/output module, the microcontroller and the network port communication module, the network port communication module is electrically connected with the microcontroller, and the network port communication module is used for being in communication connection with external equipment;

2. The multi-channel rf switch-over device of claim 1, further comprising a plug connector electrically connected to a control port of the rf switch chip.

3. The multi-channel rf switch-over device of claim 2, further comprising an inverter having an input electrically connected to the plug and the output electrically connected to the control port of the rf switch chip.

4. The multi-channel rf switch-over device of claim 1, wherein the power management module comprises a first switching circuit and a second switching circuit, the output end of the first switching circuit is electrically connected with the input end of the second switching circuit and the choke inductance input end, respectively, and the output end of the second switching circuit is electrically connected with the rf switch chip, the microcontroller and the network port communication module; the first conversion circuit is used for converting VDD12V input voltage into +5V output voltage, and the second conversion circuit is used for converting +5V input voltage into +3.3V output voltage.

5. The multi-channel rf switch-over device of claim 4, wherein the first switching circuit comprises a first power chip and the second switching circuit comprises a second power chip, the first power chip being an LM2596-5V chip and the second power chip being an LM1117 chip.

6. The multi-channel rf switch of claim 1 wherein the rf switch chip is a PE42562 rf chip.

7. The multi-channel rf switch-over device of claim 1, wherein the microcontroller is an M483SGCAE chip.

8. The multi-channel rf switch-over device of claim 1, wherein the portal communication module includes a transceiver and a communication interface, the transceiver is electrically connected to the communication interface and the microcontroller, respectively, and the transceiver is a MAX3232 transceiver.