CN110677183A

CN110677183A - Fast switching type antenna controller

Info

Publication number: CN110677183A
Application number: CN201911050749.6A
Authority: CN
Inventors: 林青山; 孙龙民; 张宏斌; 石星
Original assignee: Guangzhou Zhongxiang Information Technology Co Ltd
Current assignee: Guangzhou Zhongxiang Information Technology Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-01-10

Abstract

The invention relates to the technical field of communication, and discloses a rapid switching type antenna controller which comprises an AC-DC circuit, a lightning protection circuit, a switching circuit, an MCU circuit, a serial port RS485 circuit, a network interface circuit, a storage battery, a battery charging circuit, a 32-way lightning protection circuit and 32-way antennas, wherein the switching circuit can rapidly realize the switching of the 32-way antennas in a short time under the connection control of the MCU circuit; and the switching circuit is internally provided with a 50 ohm load, so that the switching circuit has a load absorption function, and absorbs the antenna signals which are not accessed, thereby avoiding mutual interference.

Description

Fast switching type antenna controller

Technical Field

The invention relates to the technical field of communication, in particular to a fast switching antenna controller.

Background

In the information society, computer technology is changing our ways of production, life, work and study more and more deeply. How to rapidly switch antennas in a short time when receiving antenna signals and ensure that only one path of antenna signals is accessed in a specific time and signals of other antennas which are not accessed are automatically connected to a load is the technical problem which needs to be solved at present.

Disclosure of Invention

The present invention is directed to a fast switching antenna controller, which can switch between 2-32 antenna signals as required.

In order to achieve the purpose, the invention provides the following technical scheme:

a fast switching type antenna controller comprises an AC-DC circuit, and is characterized by further comprising a lightning protection circuit, a switching circuit, an MCU circuit, a serial port RS485 circuit, a network interface circuit, a storage battery, a battery charging circuit, a 32-way lightning protection circuit and 32-way antennas, wherein each lightning protection circuit is connected with each antenna; the serial port RS485 circuit is electrically connected with the MCU circuit after being connected with the network interface circuit in parallel; the MCU circuit is connected with the control switching circuit, and the switching circuit is electrically connected with the 32-path antenna; the AC-DC circuit is connected with the storage battery through the battery charging circuit.

The switching circuit comprises a single-pole double-throw switch SPDT, a single-pole three-throw switch SP3T, a single-pole four-throw switch SP4T, a single-pole six-throw switch SP6T and a single-pole eight-throw switch SP8T, wherein the single-pole double-throw switch SPDT, the single-pole three-throw switch SP3T, the single-pole four-throw switch SP4T, the single-pole six-throw switch SP6T and the single-pole eight-throw switch SP8T are connected in parallel; the antenna ports of the SPDT, the SP3T, the SP4T, the SP6T and the SP8T are respectively connected with one antenna.

The number of the single-pole three-throw switch SP3T and the number of the single-pole six-throw switch SP6T are two respectively, so that the switching of 32 paths of antennas is realized.

In the invention, the MCU circuit is connected with the switching circuit through A, B, C three control gating terminal pins.

In the invention, the MCU circuit mainly comprises STM32F103RC series single chip microcomputer chips, is communicated with the control module through the serial port RS485 circuit and the network interface circuit, and receives a remote control signal of the control module.

In the invention, the network interface circuit comprises a network interface chip W5500 and RJ45 interfaces.

Compared with the prior art, the invention has the beneficial effects that:

firstly, switching is rapidly realized in less than or equal to 32 paths of antennas in a short time;

secondly, the switching circuit is internally provided with a 50 ohm load, so that the switching circuit has a load absorption function, and absorbs the antenna signals which are not accessed to avoid mutual interference;

each antenna port in the switching circuit is connected with one antenna, and a full-off function can be selected, namely, any path of signal is not gated, and all signals are directly connected to a load;

the system is provided with two interfaces of a serial port RS485 circuit and an RJ45, and can realize local and remote control;

fifthly, a lightning protection circuit is arranged, each path of antenna input has a lightning protection function, and lightning damage of the system is prevented;

and sixthly, the waterproof coating has a rain-proof function, and the shell protection grade IP66 can be applied to outdoor installation.

Drawings

FIG. 1 is a functional block diagram of the present invention;

FIG. 2 is a block diagram of a SPDT switch;

FIG. 3 is a block diagram of a single pole, triple throw switch SP 3T;

FIG. 4 is a block diagram of a single pole, four throw switch SP 4T;

FIG. 5 is a block diagram of a single pole, six throw switch SP 6T;

FIG. 6 is a block diagram of a single pole eight throw switch SP 8T;

fig. 7 is a circuit diagram of the MCU circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 7, a fast switching antenna controller includes an AC-DC circuit, and is characterized by further including a lightning protection circuit, a switching circuit, an MCU circuit, a serial RS485 circuit, a network interface circuit, a battery charging circuit, a 32-way lightning protection circuit, and 32-way antennas, where each lightning protection circuit is connected to each antenna; the serial port RS485 circuit is electrically connected with the MCU circuit after being connected with the network interface circuit in parallel; the MCU circuit is connected with the control switching circuit, and the switching circuit is electrically connected with the 32-path antenna; the AC-DC circuit is connected with the storage battery through the battery charging circuit.

The switching circuit comprises a single-pole double-throw switch SPDT, a single-pole three-throw switch SP3T, a single-pole four-throw switch SP4T, a single-pole six-throw switch SP6T and a single-pole eight-throw switch SP8T, wherein the single-pole double-throw switch SPDT, the single-pole three-throw switch SP3T, the single-pole four-throw switch SP4T, the single-pole six-throw switch SP6T and the single-pole eight-throw switch SP8T are connected in parallel, and each antenna port is connected with one antenna. The MCU circuit realizes the gating switching of 2-32 paths of antennas by setting high and low level values of pins A, B and C of the control gating end. The switching circuit is internally provided with a 50 ohm load, and the load is mainly used for absorbing and filtering the antenna signals which are not gated, so that the interference of the signals to the controller is reduced.

The AC-DC circuit mainly converts alternating current 220V voltage into direct current 24V voltage through the AC-DC module, converts the direct current 24V voltage into 5VDC and 3.3VDC output through the DC-DC module, supplies power to each chip of the controller, simultaneously supplies charging voltage to the charging circuit through the 24V voltage, and supplies charging voltage to the storage battery through the charging circuit under the condition that no commercial power exists.

The MCU circuit is responsible for communicating with the control module through the serial port RS485 or the network interface according to an agreed protocol, receiving a remote control signal of the control module, and gating the switching circuit according to the remote control signal to realize the switching of the antenna. The MCU circuit is realized by a single chip microcomputer chip of STM32F103RC series.

STM32F103RC series single chip microcomputer uses high performance ARM Cortex-M332 bit RISC kernel, working frequency is 72MHz, built-in high speed memory, flash memory up to 512K bytes and SRAM 64K bytes, abundant enhanced I/O port and peripheral connected to two APB buses. It contains 3 ADCs, 4 universal 16-bit timers and 2 PWM timers, and also contains standard and advanced communication interfaces: how many 2I 2C interfaces, 3 SPI interfaces, 2I 2S interfaces, 1 SDIO interface, 5 USART interfaces, one USB interface, and one CAN interface.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fast switching type antenna controller comprises an AC-DC circuit, and is characterized by further comprising a lightning protection circuit, a switching circuit, an MCU circuit, a serial port RS485 circuit, a network interface circuit, a storage battery, a battery charging circuit, a 32-way lightning protection circuit and 32-way antennas, wherein each lightning protection circuit is connected with each antenna; the serial port RS485 circuit is electrically connected with the MCU circuit after being connected with the network interface circuit in parallel; the MCU circuit is connected with the control switching circuit, and the switching circuit is electrically connected with the 32-path antenna; the AC-DC circuit is connected with the storage battery through the battery charging circuit.

2. The fast switching antenna controller according to claim 1, wherein the switching circuit comprises a single pole double throw switch SPDT, a single pole three throw switch SP3T, a single pole four throw switch SP4T, a single pole six throw switch SP6T, a single pole eight throw switch SP8T, the single pole double throw switch SPDT, the single pole three throw switch SP3T, the single pole four throw switch SP4T, the single pole six throw switch SP6T, the single pole eight throw switch SP8T being connected in parallel; the antenna ports of the SPDT, the SP3T, the SP4T, the SP6T and the SP8T are respectively connected with one antenna.

3. The fast switching antenna controller of claim 1, wherein the MCU circuit is connected to the switching circuit through A, B, C three control gate pins.

4. The fast switching antenna controller according to claim 3, wherein the MCU circuit is mainly composed of a single chip microcomputer chip of STM32F103RC series, and is in communication with the control module through a serial RS485 circuit and a network interface circuit to receive a remote control signal of the control module.

5. The fast switching antenna controller of claim 4, wherein the network interface circuit comprises a W5500, RJ45 interface network interface chip.