CN116088392A - Centralized monitoring device for radio frequency switch - Google Patents

Abstract

The invention discloses a centralized monitoring device for a radio frequency switch, and belongs to the technical field of communication systems and industries. The device comprises a chassis, an AC/DC power module, an interface motherboard, a main monitoring unit and a switch monitoring module group, wherein the AC/DC power module, the interface motherboard, the main monitoring unit and the switch monitoring module group are arranged on the chassis; the switch monitoring module group comprises a plurality of independent switch monitoring modules, the switch monitoring modules are in one-to-one correspondence with the radio frequency switches, and one switch monitoring module monitors one external radio frequency switch; the radio frequency switch is a coaxial switch or a waveguide switch; an alternating current power supply connector, a fuse box, an RS485 interface connector and a LAN interface connector are arranged on the rear panel of the case, and a power switch, a liquid crystal display unit, a key unit and a plurality of switch interface connectors are arranged on the front panel of the case. The invention has the characteristics of multiple types and quantity of monitorable switches, strong type and quantity expansibility, general hardware platform, wide temperature environment adaptability, 100% localization rate, autonomous controllability, information safety and stable and reliable performance.

Description

Centralized monitoring device for radio frequency switch

Technical Field

The invention relates to the technical field of communication systems and industries, in particular to a centralized monitoring device for a radio frequency switch.

Background

At present, the function realized by a communication system is more and more, the radio frequency link is more and more complex, a plurality of switches for realizing signal channel switching of various types are required to be configured in the complex radio frequency link, each switching control device in the past can only control a plurality of switches with limited quantity and types, the plurality of switches of various types and control devices thereof are required to be configured in the complex radio frequency link, the linkage control of the plurality of switches is difficult to realize, as the communication system is more and more complex, the complexity and cost requirements of the system can not be met by the prior switching control device, and the environmental adaptability, the 100% localization rate, the autonomous controllability, the information safety and the like of various devices of a project system are required to be met by the prior switching control device.

Disclosure of Invention

In view of the above, the present invention provides a centralized monitoring device for a radio frequency switch. The system is used for switching control and state monitoring of a plurality of switches and various types of switches in a radio frequency link of a complex communication system, can realize linkage control, and has the characteristics of being capable of monitoring a plurality of types and numbers of switches, strong in expansibility of the types and the numbers, universal in hardware platform, wide in temperature environment adaptability, 100% in localization rate, independent and controllable, safe in information and stable and reliable in performance.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a centralized monitoring device of a radio frequency switch comprises a chassis, an AC/DC power module, an interface motherboard, a main monitoring unit and a switch monitoring module group, wherein the AC/DC power module, the interface motherboard, the main monitoring unit and the switch monitoring module group are arranged on the chassis; the switch monitoring module group comprises a plurality of independent switch monitoring modules, the switch monitoring modules are in one-to-one correspondence with the radio frequency switches, and one switch monitoring module monitors one external radio frequency switch; the radio frequency switch is a coaxial switch or a waveguide switch;

the chassis is characterized in that an alternating current power supply connector, a fuse box, an RS485 interface connector and a LAN interface connector are arranged on the rear panel of the chassis, and a power switch, a liquid crystal display unit, a key unit and a plurality of switch interface connectors are arranged on the front panel of the chassis.

Further: the output of the AC/DC power module is connected with a first port of an interface mother board, a second port of the interface mother board is connected with a first port of a main monitoring unit, and a third port of the interface mother board is connected with a first port of a switch monitoring module group;

the AC/DC power module provides direct current power supply for the main monitoring unit and the switch monitoring module group through the interface motherboard, and the interface motherboard provides CAN bus communication channels for the switch monitoring module group and the main monitoring unit, so that power supply of a plurality of independent switch monitoring modules and real-time communication with the main monitoring unit are realized;

the external alternating current 220V power supply A is input to a first port of an alternating current power supply connector to provide alternating current power supply for equipment, a second port of the alternating current power supply connector is electrically connected with a first port of a fuse box, a fuse arranged in the fuse box provides overcurrent protection for the equipment, the second port of the fuse box is electrically connected with a first port of a power switch, the power switch controls the power on and off of the equipment, a second port of the power switch is electrically connected with a first port of an AC/DC power supply module, and the AC/DC power supply module realizes the conversion from alternating current 220V to direct current voltage;

the second port of the main monitoring unit is output to the first port of the liquid crystal display unit, and the liquid crystal display unit is used for displaying the state and parameters of the switch and the equipment in the radio frequency link; the first port of the key unit is output to the third port of the main monitoring unit, the key unit is used for inputting setting parameters and controlling liquid crystal display, the key unit and the liquid crystal display unit provide a man-machine interaction interface, and the man-machine interaction is completed through the cooperation of the key unit and the liquid crystal display unit, so that the monitoring of the switch in the radio frequency signal link is completed;

the fourth port of the main monitoring unit is electrically connected with the first port of the LAN interface connector, the second port of the LAN interface connector is electrically connected with an external computer B through a plug or a network cable corresponding to the connector, and the main monitoring unit is in real-time communication with the computer B, so that the computer B can remotely monitor the switch D in the radio frequency link through the network port;

the fifth port of the main monitoring unit is electrically connected with the first port of the RS485 interface connector, the second port of the RS485 interface connector is electrically connected with an external computer C through a plug corresponding to the connector, and the main monitoring unit is in real-time communication with the computer C, so that the remote monitoring of the computer C on the switch D in the radio frequency link through the serial port is realized.

Further: the plurality of independent switch monitoring modules are used for monitoring a plurality of independent external switches, 1 switch monitoring module and 1 switch interface connector form 1 switch control assembly, and the external 1 switches are monitored;

the main monitoring unit is communicated with the switch monitoring module through a CAN bus communication channel on the interface motherboard, and monitors a switch connected to the switch interface connector in real time; each set of switch component is fixed on a corresponding L-shaped tray support, a plurality of tray supports are movably connected to the front panel of the case in an array mode, and each tray support can be detached from and pulled out of the front panel; when one of the tray supports is pulled out for integral maintenance, the monitoring of other switches is not affected.

Further: the main monitoring unit comprises a power supply circuit, a man-machine interface circuit, a clock circuit, an MCU circuit, a CAN interface circuit, an RS485 interface circuit and a LAN interface circuit; wherein:

the direct current power output by the AC/DC power supply module is input to a first port of an interface motherboard, a second port of the interface motherboard is output, the whole of the direct current power is denoted by letter E, the direct current power is input to a first port of a power supply circuit, is output to a first port of an MCU circuit through a second port of the direct current power after being subjected to voltage reduction and filtering treatment by the power supply circuit, supplies power to the MCU circuit, and is output to a man-machine interface circuit, a clock circuit, a CAN interface circuit, an RS485 interface circuit and a LAN interface circuit through a third port of the power supply circuit, and the power supply port inputs are not particularly marked any more and are denoted by a set I;

the liquid crystal display unit and the key unit of the device are uniformly represented by a set J, are electrically connected with a first port of a man-machine interface circuit, a second port of the man-machine interface circuit is electrically connected with a second port of an MCU circuit, and the MCU circuit controls and detects the liquid crystal display unit and the key unit through the man-machine interface circuit;

the clock circuit generates a clock signal, and outputs the clock signal to the third port of the MCU circuit through the first port of the clock circuit to provide the clock signal for the MCU circuit;

the fourth port of the MCU circuit is electrically connected with the first port of the LAN interface circuit, the second port of the LAN interface circuit is electrically connected with the external computer H through the LAN interface connector, and the MCU circuit is communicated with the external computer H through the LAN interface circuit, so that the remote monitoring of the equipment and the radio frequency switch by the external computer H is realized;

the fifth port of the MCU circuit is electrically connected with the first port of the RS485 interface circuit, the second port of the RS485 interface circuit is electrically connected with the external computer G through the RS485 interface connector, and the MCU circuit is communicated with the external computer G through the RS485 interface circuit, so that the remote monitoring of the equipment and the radio frequency switch by the external computer G is realized;

the sixth port of the MCU circuit is electrically connected with the first port of the CAN interface circuit, the second port of the CAN interface circuit is electrically connected with the CAN interface connector F, the connector F is electrically connected with the second port of the interface motherboard, the MCU circuit is communicated with the plurality of switch monitoring modules through the CAN bus on the interface motherboard, and thus the main monitoring unit monitors the switches in the radio frequency link through the interface motherboard and the plurality of switch monitoring modules;

the MCU circuit is a core circuit of the main monitoring unit and mainly comprises a clock source circuit, an ARM chip and a peripheral circuit thereof, wherein the clock source circuit generates a clock signal, and the clock signal is input to a clock input pin of the ARM chip to provide a clock for the ARM chip so that software in the ARM chip can run; the first port of the MCU circuit is a 3.3V power supply pin and a grounding pin of the ARM chip, and the power supply pin is input to a corresponding pin of the ARM chip to supply power for the ARM chip after being reduced and filtered by the power supply circuit; the second port of the MCU circuit is a plurality of general input/output pins of the ARM chip, and the switching control and the state monitoring of the switch in the radio frequency link are realized by the local operation of the equipment through the man-machine interface circuit; the third port of the MCU circuit is I of ARM chip ² The C interface is communicated with the clock circuit through a third port of the MCU circuit and receives a clock signal of the clock circuit; the fourth port of the MCU circuit is an Ethernet interface pin of the ARM chip and is electrically connected with the first port of the LAN interface circuit; the fifth port of the MCU circuit is a UART interface pin of the ARM chip and is electrically connected with the first port of the RS485 interface circuit; the sixth port of the MCU circuit is the CAN total of the ARM chipA line interface pin electrically connected with the first port of the CAN interface circuit; the ARM chip is communicated with an external computer through a LAN interface circuit or an RS485 interface circuit, so that the remote switching control and the state monitoring of a switch in a radio frequency signal link are realized by the external computer.

Further: the hardware and the software of the switch monitoring module are the same, and the switch monitoring module comprises a power supply circuit, a CAN interface circuit, an ARM circuit, an address code and a switch monitoring circuit, wherein:

the direct current power supply input to the first port of the interface mother board is output through the third port of the interface mother board, the whole is denoted by letter K, the third port of the interface mother board is electrically connected with the first port of the power circuit, the direct current power supply input to the first port of the power circuit is output to the first port of the CAN interface circuit through the second port after being reduced and filtered by the power circuit, the power is supplied to the CAN interface circuit, the power is output to the ARM circuit, the address coding and the switch monitoring circuit through the third port of the power circuit, the power is supplied to the circuits, the input of the power supply ports is not specially marked any more, and the input of the power supply ports is denoted by a set L;

the second port of the CAN interface circuit is electrically connected with the third port of the interface motherboard, is communicated with the main monitoring unit through a CAN bus channel on the interface motherboard, is electrically connected with the second port of the ARM circuit, realizes the level conversion of the communication interface for the ARM circuit, receives the switch state transmitted by the ARM circuit, and transmits a switch switching instruction transmitted by the main monitoring unit for the ARM circuit;

the first port of the ARM circuit is electrically connected with the second port of the switch monitoring circuit, the first port of the switch monitoring circuit is electrically connected with the switch interface connector, and the control and monitoring of the ARM circuit on the switch are realized through the switch monitoring circuit; the third port of the ARM circuit is electrically connected with the first port of the address coding circuit, the address coding circuit realizes address coding of the switch monitoring modules, address distinguishing of the switch monitoring modules is realized, the address is opposite to the CAN interface communication address on the corresponding switch monitoring module, and therefore the corresponding radio frequency switch CAN be distinguished and monitored by the main monitoring unit according to the CAN communication address.

Further, the third port of the ARM circuit is electrically connected with the first port of the address coding circuit, the address coding circuit realizes address coding of the switch monitoring modules, address distinction of a plurality of independent switch monitoring modules is realized, the address corresponds to a CAN interface communication address on the corresponding switch monitoring module, and thus the main monitoring unit CAN distinguish corresponding radio frequency switches according to the CAN communication address of the switch monitoring module, and the number of controllable switches CAN be increased by adding the switch monitoring modules and the switch interface connectors in the equipment; according to the difference of coaxial switch and waveguide switch monitoring pin, at the corresponding different pin of switch interface connector, the type of external switch can be detected to the switch monitoring circuit according to this.

The beneficial effects generated by adopting the technical scheme are as follows:

1. the invention can be used for switching control and state monitoring of a plurality of switches and various types of switches in a radio frequency link of a complex communication system, and can realize linkage control;

2. the invention has stronger switch type and quantity expansibility, and the quantity of controllable switches can be increased by adding the switch monitoring module component;

3. the invention has high integration degree, low power consumption and small debugging workload, and can normally work at severe environment temperature of minus 40 ℃ to plus 55 ℃;

4. the invention is realized by adopting domestic devices, is completely and independently controllable, and has higher information security.

Drawings

Fig. 1 is a block diagram of the overall principle of the invention.

Fig. 2 is a schematic block diagram of a master monitoring unit of the present invention.

Fig. 3 is a schematic block diagram of a switch monitor module of the present invention.

Detailed Description

The invention will be further described with reference to the drawings and detailed description.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it will be apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The present invention will be described in further detail below with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.

Referring to fig. 1, the whole drawer type chassis of the present invention includes a chassis, an AC/DC power module, an interface motherboard, a main monitoring unit, a plurality of switch monitoring modules, an AC power connector, a fuse box, an RS485 interface connector, a LAN interface connector, a power switch, a liquid crystal display unit, a key unit, and a plurality of switch interface connectors, wherein the AC power connector, the fuse box, the RS485 interface connector, the LAN interface connector are disposed on a rear panel of the chassis, and the power switch, the liquid crystal display unit, the key unit, and the switch interface connectors are disposed on a front panel of the chassis, wherein:

the external alternating current 220V power supply A is input into a first port of an alternating current power supply connector for providing alternating current power supply for the radio frequency switch centralized monitoring equipment, the power supply connector is implemented by adopting a commercial domestic 3-core or 4-core aviation socket, the specific model is not limited, a second port of the power supply connector is electrically connected with a first port of a fuse box, a fuse arranged in the fuse box provides overcurrent protection function for the radio frequency switch centralized monitoring equipment, the fuse box is implemented by adopting a commercial domestic BLX-1 type, the fuse is implemented by adopting a commercial domestic RF1-20-3A/250V type, a second port of the fuse box is electrically connected with the first port of the power switch, the power switch controls the power supply on-off of the radio frequency switch centralized monitoring equipment, the power switch is implemented by adopting a commercial domestic KN1A-202DM sealing lock shaping button switch, the second port of the power switch is electrically connected with the first port of the AC/DC power module, the power module realizes AC/DC conversion, the customized internal device is realized by adopting a full-domestic ZD22075H24S-463 type power supply, the power module converts alternating current 220V into +24V direct current power supply required by the main monitoring unit and the switch monitoring module, the second port of the power module is output to the first port of the interface mother board, the second port of the interface mother board is connected with the first port of the main monitoring unit, the third port of the interface mother board is connected with the first ports of the switch monitoring modules, the AC/DC power module provides direct current power supply for the main monitoring unit and the switch monitoring modules through the interface mother board, and the interface mother board provides CAN bus communication channels for the switch monitoring modules and the main monitoring unit;

the second port of the main monitoring unit is output to the first port of the liquid crystal display unit, the liquid crystal display unit is used for displaying the state and parameters of a switch in a radio frequency link, the liquid crystal display unit is implemented by adopting a customized domestic liquid crystal display module V0017-AH-040, the liquid crystal display unit is arranged on the inner side of the front panel, and the liquid crystal display part is exposed at a window of the front panel; the first port of the key unit is output to the third port of the main monitoring unit, the key unit is used for inputting setting parameters and controlling liquid crystal display, a man-machine interaction interface is provided by the combined use of the key unit and the liquid crystal display unit, the man-machine interaction is completed through the matched use, the monitoring of the switch in the radio frequency signal link is completed in the local operation of the equipment, the key unit is implemented by adopting a domestic metal key switch assembly SCD3-MC-KB6 type and is arranged on the inner side of the front panel, and the key part protrudes out of the front panel through a front panel through hole;

the fourth port of the main monitoring unit is electrically connected with the first port of the LAN interface connector, the second port of the LAN interface connector is electrically connected with an external computer B through a plug or a network cable corresponding to the connector, the main monitoring unit is in real-time communication with the computer B, the remote monitoring of the switch D in the radio frequency link by the computer B is realized, the LAN interface connector is implemented by adopting a commercial YWB120E01S1 type domestic aviation socket, and the LAN interface connector can be accessed through a corresponding aviation plug or can be directly plugged into the network cable plug for use;

the fifth port of the main monitoring unit is electrically connected with the first port of the RS485 interface connector, the second port of the RS485 interface connector is electrically connected with an external computer C through a plug corresponding to the connector, the main monitoring unit is in real-time communication with the computer C, remote monitoring of the switch D in the radio frequency link of the computer C is realized, and the RS485 interface connector is implemented by adopting a commercial YLH20S0809K type domestic connector;

the switch monitoring modules comprise a plurality of independent switch monitoring modules, the switch interface connectors comprise a plurality of independent switch interface connectors, 1 switch monitoring module and 1 switch interface connector form 1 set of switch control assembly, and are connected with and control 1 switch at the position D, and the switch can be a coaxial switch or a waveguide switch. The main monitoring unit is communicated with the switch monitoring modules through CAN bus communication channels on the interface motherboard, and monitors the switch at the D position connected to the switch interface connectors in real time;

referring to fig. 2, the main monitoring unit includes a power supply circuit, a man-machine interface circuit, a clock circuit, an MCU circuit, a CAN interface circuit, an RS485 interface circuit, and a LAN interface circuit; wherein:

the direct current power output by the AC/DC power supply module is input to a first port of an interface motherboard, a second port of the interface motherboard is output, the whole is indicated by letter E, the direct current power is input to the first port of a power supply circuit, is output to the first port of an MCU circuit through the second port after being subjected to voltage reduction and filtering treatment by the power supply circuit, is supplied to the MCU circuit, is output to a man-machine interface circuit, a clock circuit, a CAN interface circuit, an RS485 interface circuit and a LAN interface circuit through a third port of the power supply circuit, is supplied to the circuits, the input of the power supply ports is not particularly marked any more, is indicated by a set I in a unified way, the power supply circuit is implemented by a commercially available domestic voltage reduction chip DIO54270, and the peripheral circuit is implemented by domestic resistors, capacitors and inductors;

the liquid crystal display unit and the key unit of the device are uniformly represented by a set J, are electrically connected with a first port of the man-machine interface circuit, a second port of the man-machine interface circuit is electrically connected with a second port of the MCU circuit, the MCU circuit controls and detects the state indication unit, the liquid crystal display unit and the key unit through the man-machine interface circuit, and the man-machine interface circuit is realized by domestic resistors, capacitors and inductors;

the clock circuit generates a clock signal, outputs the clock signal to a third port of the MCU circuit through a first port of the clock circuit, provides the clock signal for the MCU circuit, is implemented by a commercial domestic device SD2506API-A, provides a clock for a system, and is used for recording log records such as alarms and operations;

the fourth port of the MCU circuit is electrically connected with the first port of the LAN interface circuit, the second port of the LAN interface circuit is electrically connected with the LAN interface connector H, the MCU circuit is communicated with an external computer through the LAN interface circuit, the remote monitoring of the radio frequency switch centralized monitoring equipment and the radio frequency switch by the external computer is realized, the LAN interface circuit is implemented by adopting a commercially available SR8201F type domestic chip, and the peripheral circuit is realized by adopting domestic resistor, capacitor and inductor;

the fifth port of the MCU circuit is electrically connected with the first port of the RS485 interface circuit, the second port of the RS485 interface circuit is electrically connected with the RS485 interface connector G, the MCU circuit is communicated with an external computer through the RS485 interface circuit, the remote monitoring function of the external computer on equipment and a radio frequency switch is realized, the RS485 interface circuit is implemented by adopting a commercial domestic chip JM3096T, and the peripheral circuit is realized by adopting domestic resistors, capacitors and inductors;

the sixth port of the MCU circuit is electrically connected with the first port of the CAN interface circuit, the two ports of the CAN interface circuit are electrically connected with the CAN interface connector F, the CAN interface circuit is implemented by adopting a commercial domestic chip JM3062, the peripheral circuit is realized by adopting domestic resistors, capacitors and inductors, the MCU circuit is communicated with the switch module, the host and the standby machine through the CAN interface circuit, and the states and parameters of the MCU circuit and the switch module and the host are monitored and controlled to realize the link equipment monitoring and the host and standby machine switching of the communication system;

the MCU circuit is a core circuit of the main monitoring unit and mainly comprises a clock source circuit, an ARM chip and a peripheral circuit thereof. The clock source circuit is realized by adopting a commercial domestic crystal oscillator HC-49U/S-8MHz, the ARM chip is a commercial domestic chip GD32F450VKT6, and peripheral circuits of the clock source circuit are realized by adopting domestic resistors, capacitors and inductors. The embedded software programmed in the ARM chip not only completes the centralized monitoring of the radio frequency switch, but also completes the monitoring of the relevant state and parameters of the equipment.

The above-mentioned main monitoring unit embodiment is realized by the following means: all the circuit components in fig. 2 are welded on two sides of a 6-layer printed circuit board with the size of 80 mm multiplied by 90 mm and the thickness of 2 mm, and the printed circuit board is fixed in a radio frequency switch centralized monitoring equipment case through four corner positioning holes, wherein a first port of a power circuit, a first port of a man-machine interface circuit, a second port of a CAN interface circuit, a second port of an RS485 interface circuit and a second port of a LAN interface circuit are all implemented by adopting commercial domestic JL24 sockets, and other ports are electrically connected on the printed circuit board through printed wires.

Referring to fig. 3, the switch monitor module includes a power circuit, a CAN interface circuit, an ARM circuit, an address code, and a switch monitor circuit, wherein:

the direct current power output by the AC/DC power module is output to a third port through a first port of an interface motherboard, is input to a first port of a power circuit of the switch monitoring module, is output to a first port of a CAN interface circuit through a second port after being subjected to voltage reduction and filtering treatment by the power circuit, supplies power to the CAN interface circuit, is output to an ARM circuit, an address coding and switch monitoring circuit through the third port of the power circuit, supplies power to the circuits, and the input of the power supply ports is not particularly marked any more and is uniformly represented by a set L; the power circuit is implemented by adopting a commercial domestic voltage reduction chip DIO54270, and the peripheral circuit is implemented by adopting domestic resistors, capacitors and inductors;

the second port of the CAN interface circuit is electrically connected with the third port of the interface motherboard, is communicated with the main monitoring unit through a CAN bus channel on the interface motherboard, is electrically connected with the second port of the ARM circuit, realizes the level conversion of the communication interface for the ARM circuit, and receives the switch state transmitted by the ARM circuit; the CAN interface circuit is implemented by a commercial domestic chip JM3062, and the peripheral circuit is implemented by domestic resistors, capacitors and inductors.

The ARM circuit is a core circuit of the switch monitoring circuit and mainly comprises a clock source circuit, an ARM chip and a peripheral circuit. The clock source circuit is realized by adopting a commercial domestic crystal oscillator HC-49U/S-8MHz, the ARM chip is a commercial domestic chip GD32E103CBT6, and the peripheral circuits of the clock source circuit are realized by adopting domestic resistors, capacitors and inductors. The embedded software programmed in the ARM chip judges whether encoding is needed according to the detection encoding circuit when the switch monitoring module is electrified, if so, the CAN communication address on the switch monitoring module is encoded, then the embedded software is always communicated with the switch monitoring circuit, the state of the switch is monitored by the switch monitoring circuit, the switch is controlled to be switched, the embedded software is communicated with the CAN interface circuit in real time, and the state of the switch and the received switching instruction of the main monitoring unit are reported.

The first port of the ARM circuit is electrically connected with the second port of the switch monitoring circuit, the first port of the switch monitoring circuit is electrically connected with the switch interface connector, and the control and monitoring of the ARM circuit on the switch are realized through the switch monitoring circuit; the switch monitoring circuit is implemented through a commercially available field effect transistor BLM4435, a triode PT23T3904 and a triode PT23T3906, and realizes state monitoring and switching control of a switch.

The third port of the ARM circuit is electrically connected with the first port of the address coding circuit, the address coding circuit realizes address coding of the switch monitoring modules, address distinguishing of the switch monitoring modules is realized, the address is opposite to the CAN interface communication address on the corresponding switch monitoring module, and therefore the corresponding radio frequency switch CAN be distinguished and monitored by the main monitoring unit according to the CAN communication address. The address coding circuit is mainly realized by a commercial double-row contact pin 201S-2X 5PG and a resistor, one side of the double-row contact pin is grounded, the other side of the double-row contact pin is connected with a +3.3V power supply through the resistor to be pulled up, the pull-up end of the contact pin is a detection end and is connected to a general IO port of an ARM chip, when equipment is powered on, the ARM circuit detects that the address coding circuit is +3.3V, the switch monitoring circuit does not need address coding, and otherwise, the switch monitoring circuit is subjected to address coding.

The embodiment of the switch monitoring module is realized by the following steps: all the circuit components in fig. 3 are welded on two sides of a 4-layer printed circuit board with the size of 30 mm multiplied by 70 mm and the thickness of 2 mm, the printed circuit board is fixed on an L-shaped tray support through four corner positioning holes, a switch interface connector is also fixed on the support, the tray support is integrally fixed on a front panel of a case, and the tray support is integrally detachable and extractable from the front panel, so that the front panel of the case is provided with a plurality of tray supports integrally, and the normal operation of other switch monitoring modules is not influenced when one tray support is integrally extracted for maintenance. The first port of the power supply circuit and the second port of the CAN interface circuit share one socket, and the power supply circuit and the second port of the CAN interface circuit are implemented by adopting a commercially available domestic JL24 socket and are connected with a third port of the interface motherboard through a commercially available JL24 type cable assembly; the first port of the switch monitoring circuit is also implemented by a commercially available domestic JL24 type socket, the switch interface connector is implemented by a commercially available domestic YLH20S1013K type connector, the switch interface connector and the domestic YLH20S1013K type connector are connected through a commercially available JL24 type cable, and other ports are electrically connected on the printed circuit board through a printed wiring.

The above-described interface motherboard embodiment is implemented as follows: as shown in fig. 1, the interface motherboard provides power supply and CAN bus communication channels for the main monitoring unit and the plurality of independent switch monitoring modules, is a 4-layer printed circuit board with the size of 320 mm×100 mm and the thickness of 2 mm, the ports are electrically connected on the printed circuit board through printed wires, the first port, the second port and the third port of the interface motherboard are implemented by using commercially available domestic JL24 type sockets, and are connected with the AC/DC power module, the main monitoring unit and the plurality of independent switch monitoring modules by using commercially available JL24 type plug and strip cables, and the interface motherboard is vertically fixed inside the chassis.

In a word, the invention has the characteristics of multiple types and quantity of monitorable switches, strong type and quantity expansibility, general hardware platform, wide temperature environment adaptability, 100% localization rate, autonomous controllability, information safety and stable and reliable performance.

The foregoing description of the specific embodiments of the present patent is merely illustrative of the present invention as set forth for the person of ordinary skill in the art to understand the present patent and is not intended to suggest that the scope of the present patent disclosure is limited to only these examples. Any omission, modification, replacement, improvement, etc. of the above embodiments should be included in the protection scope of the present invention.

Claims (6)

1. A centralized monitoring device of a radio frequency switch comprises a chassis, an AC/DC power module, an interface motherboard, a main monitoring unit and a switch monitoring module group, wherein the AC/DC power module, the interface motherboard, the main monitoring unit and the switch monitoring module group are arranged on the chassis; the method is characterized in that: the switch monitoring module group comprises a plurality of independent switch monitoring modules, the switch monitoring modules are in one-to-one correspondence with the radio frequency switches, and one switch monitoring module monitors one external radio frequency switch; the radio frequency switch is a coaxial switch or a waveguide switch;

the chassis is characterized in that an alternating current power supply connector, a fuse box, an RS485 interface connector and a LAN interface connector are arranged on the rear panel of the chassis, and a power switch, a liquid crystal display unit, a key unit and a plurality of switch interface connectors are arranged on the front panel of the chassis.

2. The radio frequency switch centralized monitoring device of claim 1, wherein: the output of the AC/DC power module is connected with a first port of an interface mother board, a second port of the interface mother board is connected with a first port of a main monitoring unit, and a third port of the interface mother board is connected with a first port of a switch monitoring module group;

the AC/DC power module provides direct current power supply for the main monitoring unit and the switch monitoring module group through the interface motherboard, and the interface motherboard provides CAN bus communication channels for the switch monitoring module group and the main monitoring unit, so that power supply of a plurality of independent switch monitoring modules and real-time communication with the main monitoring unit are realized;

the external alternating current 220V power supply A is input to a first port of an alternating current power supply connector to provide alternating current power supply for equipment, a second port of the alternating current power supply connector is electrically connected with a first port of a fuse box, a fuse arranged in the fuse box provides overcurrent protection for the equipment, the second port of the fuse box is electrically connected with a first port of a power switch, the power switch controls the power on and off of the equipment, a second port of the power switch is electrically connected with a first port of an AC/DC power supply module, and the AC/DC power supply module realizes the conversion from alternating current 220V to direct current voltage;

the second port of the main monitoring unit is output to the first port of the liquid crystal display unit, and the liquid crystal display unit is used for displaying the state and parameters of the switch and the equipment in the radio frequency link; the first port of the key unit is output to the third port of the main monitoring unit, the key unit is used for inputting setting parameters and controlling liquid crystal display, the key unit and the liquid crystal display unit provide a man-machine interaction interface, and the man-machine interaction is completed through the cooperation of the key unit and the liquid crystal display unit, so that the monitoring of the switch in the radio frequency signal link is completed;

the fourth port of the main monitoring unit is electrically connected with the first port of the LAN interface connector, the second port of the LAN interface connector is electrically connected with an external computer B through a plug or a network cable corresponding to the connector, and the main monitoring unit is in real-time communication with the computer B, so that the computer B can remotely monitor the switch D in the radio frequency link through the network port;

the fifth port of the main monitoring unit is electrically connected with the first port of the RS485 interface connector, the second port of the RS485 interface connector is electrically connected with an external computer C through a plug corresponding to the connector, and the main monitoring unit is in real-time communication with the computer C, so that the remote monitoring of the computer C on the switch D in the radio frequency link through the serial port is realized.

3. The radio frequency switch centralized monitoring device of claim 1, wherein: the plurality of independent switch monitoring modules are used for monitoring a plurality of independent external switches, 1 switch monitoring module and 1 switch interface connector form 1 switch control assembly, and the external 1 switches are monitored;

the main monitoring unit is communicated with the switch monitoring module through a CAN bus communication channel on the interface motherboard, and monitors a switch connected to the switch interface connector in real time; each set of switch component is fixed on a corresponding L-shaped tray support, a plurality of tray supports are movably connected to the front panel of the case in an array mode, and each tray support can be detached from and pulled out of the front panel; when one of the tray supports is pulled out for integral maintenance, the monitoring of other switches is not affected.

4. The radio frequency switch centralized monitoring device of claim 1, wherein: the main monitoring unit comprises a power supply circuit, a man-machine interface circuit, a clock circuit, an MCU circuit, a CAN interface circuit, an RS485 interface circuit and a LAN interface circuit; wherein:

the direct current power output by the AC/DC power supply module is input to a first port of an interface motherboard, a second port of the interface motherboard is output, the whole of the direct current power is denoted by letter E, the direct current power is input to a first port of a power supply circuit, is output to a first port of an MCU circuit through a second port of the direct current power after being subjected to voltage reduction and filtering treatment by the power supply circuit, supplies power to the MCU circuit, and is output to a man-machine interface circuit, a clock circuit, a CAN interface circuit, an RS485 interface circuit and a LAN interface circuit through a third port of the power supply circuit, and the power supply port inputs are not particularly marked any more and are denoted by a set I;

the liquid crystal display unit and the key unit of the device are uniformly represented by a set J, are electrically connected with a first port of a man-machine interface circuit, a second port of the man-machine interface circuit is electrically connected with a second port of an MCU circuit, and the MCU circuit controls and detects the liquid crystal display unit and the key unit through the man-machine interface circuit;

the clock circuit generates a clock signal, and outputs the clock signal to the third port of the MCU circuit through the first port of the clock circuit to provide the clock signal for the MCU circuit;

the fourth port of the MCU circuit is electrically connected with the first port of the LAN interface circuit, the second port of the LAN interface circuit is electrically connected with the external computer H through the LAN interface connector, and the MCU circuit is communicated with the external computer H through the LAN interface circuit, so that the remote monitoring of the equipment and the radio frequency switch by the external computer H is realized;

the fifth port of the MCU circuit is electrically connected with the first port of the RS485 interface circuit, the second port of the RS485 interface circuit is electrically connected with the external computer G through the RS485 interface connector, and the MCU circuit is communicated with the external computer G through the RS485 interface circuit, so that the remote monitoring of the equipment and the radio frequency switch by the external computer G is realized;

the sixth port of the MCU circuit is electrically connected with the first port of the CAN interface circuit, the second port of the CAN interface circuit is electrically connected with the CAN interface connector F, the connector F is electrically connected with the second port of the interface motherboard, the MCU circuit is communicated with the plurality of switch monitoring modules through the CAN bus on the interface motherboard, and thus the main monitoring unit monitors the switches in the radio frequency link through the interface motherboard and the plurality of switch monitoring modules;

the MCU circuit is a core circuit of the main monitoring unit and mainly comprises a clock source circuit, an ARM chip and a peripheral circuit thereof, wherein the clock source circuit generates a clock signal, and the clock signal is input to a clock input pin of the ARM chip to provide a clock for the ARM chip so that software in the ARM chip can run; the first port of the MCU circuit is each 3.3V power supply pin and grounding pin of the ARM chip, and the power supply is reduced and filtered by the power supply circuit and then input to the corresponding pin of the ARM chip to supply power for the ARM chipThe method comprises the steps of carrying out a first treatment on the surface of the The second port of the MCU circuit is a plurality of general input/output pins of the ARM chip, and the switching control and the state monitoring of the switch in the radio frequency link are realized by the local operation of the equipment through the man-machine interface circuit; the third port of the MCU circuit is I of ARM chip ² The C interface is communicated with the clock circuit through a third port of the MCU circuit and receives a clock signal of the clock circuit; the fourth port of the MCU circuit is an Ethernet interface pin of the ARM chip and is electrically connected with the first port of the LAN interface circuit; the fifth port of the MCU circuit is a UART interface pin of the ARM chip and is electrically connected with the first port of the RS485 interface circuit; the sixth port of the MCU circuit is a CAN bus interface pin of the ARM chip and is electrically connected with the first port of the CAN interface circuit; the ARM chip is communicated with an external computer through a LAN interface circuit or an RS485 interface circuit, so that the remote switching control and the state monitoring of a switch in a radio frequency signal link are realized by the external computer.

5. The radio frequency switch centralized monitoring device of claim 1, wherein: the hardware and the software of the switch monitoring module are the same, and the switch monitoring module comprises a power supply circuit, a CAN interface circuit, an ARM circuit, an address code and a switch monitoring circuit, wherein:

the direct current power supply input to the first port of the interface mother board is output through the third port of the interface mother board, the whole is denoted by letter K, the third port of the interface mother board is electrically connected with the first port of the power circuit, the direct current power supply input to the first port of the power circuit is output to the first port of the CAN interface circuit through the second port after being reduced and filtered by the power circuit, the power is supplied to the CAN interface circuit, the power is output to the ARM circuit, the address coding and the switch monitoring circuit through the third port of the power circuit, the power is supplied to the circuits, the input of the power supply ports is not specially marked any more, and the input of the power supply ports is denoted by a set L;

the second port of the CAN interface circuit is electrically connected with the third port of the interface motherboard, is communicated with the main monitoring unit through a CAN bus channel on the interface motherboard, is electrically connected with the second port of the ARM circuit, realizes the level conversion of the communication interface for the ARM circuit, receives the switch state transmitted by the ARM circuit, and transmits a switch switching instruction transmitted by the main monitoring unit for the ARM circuit;

the first port of the ARM circuit is electrically connected with the second port of the switch monitoring circuit, the first port of the switch monitoring circuit is electrically connected with the switch interface connector, and the control and monitoring of the ARM circuit on the switch are realized through the switch monitoring circuit; the third port of the ARM circuit is electrically connected with the first port of the address coding circuit, the address coding circuit realizes address coding of the switch monitoring modules, address distinguishing of the switch monitoring modules is realized, the address is opposite to the CAN interface communication address on the corresponding switch monitoring module, and therefore the corresponding radio frequency switch CAN be distinguished and monitored by the main monitoring unit according to the CAN communication address.

6. The radio frequency switch centralized monitoring device of claim 1, wherein: the third port of the ARM circuit is electrically connected with the first port of the address coding circuit, the address coding circuit realizes the address coding of the switch monitoring modules, the address distinction of a plurality of independent switch monitoring modules is realized, the address corresponds to the CAN interface communication address on the corresponding switch monitoring module, the corresponding radio frequency switch CAN be distinguished by the main monitoring unit according to the CAN communication address of the switch monitoring module, and the number of controllable switches CAN be increased by adding the switch monitoring module and the switch interface connector in the equipment; according to the difference of coaxial switch and waveguide switch monitoring pin, at the corresponding different pin of switch interface connector, the type of external switch can be detected to the switch monitoring circuit according to this.

Images