Remote monitoring system for defense city differential station antenna tuner

Abstract

The invention relates to the technical field of antenna tuner remote control, in particular to a defense city differential station antenna tuner remote monitoring and monitoring system which comprises an antenna tuner, and the antenna tuner is additionally provided with the following functional modules: a module 1, a remote control function, a module 2, a module 3, a module 4, a module 5, a module 6 and a module 7, the basic function tuning and the matching control of the antenna tuner are realized; remote alarm monitoring of an antenna tuner mainly means that when a tuning coil reaches the top or the bottom, a real-time alarm signal and an audible and visual alarm are provided and sent to remote monitoring software in real time; the antenna tuner has the advantages that unattended operation of a station can be achieved, remote monitoring and control (impedance conversion tap switching, + / -key adjustment and the like) of the antenna tuner of a differential station can be achieved, complete automatic tuning of the antenna tuner is achieved, and normal work of the station under the all-weather condition is well guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of antenna tuner remote control, in particular to a Fangcheng differential station antenna tuner remote monitoring system. Background Art

[0002] At present, the South China Sea Navigation Support Center has completed the construction of the RBN / DGNSS remote monitoring system project, realizing remote monitoring and control of RBN / DGNSS stations, RBN / DGNSS monitoring station equipment and facilities. The on-duty personnel can fully control the operating status of the RBN / DGNSS station equipment at the RBN / DGNSS jurisdiction center or the sea area center.

[0003] In the long-term operation of the station, it is found that when encountering abnormal weather such as thunderstorms, strong winds, and heavy fog, the parameters of the transmitting antenna will change significantly, the antenna tuner will be detuned, and the incident power of the transmitter will drop or even the transmitter will be replaced or shut down. To solve this problem, it is often necessary for remote duty personnel to arrive at the station site (or assign local personnel) to manually tune or replace the impedance transformer tap in the antenna tuning room, but it is obvious that this is very dangerous to the personal safety of on-site operators on thunderstorm days. At the same time, for stations far away from the duty location, it takes a certain amount of time for remote duty personnel to arrive at the site, which also has a certain impact on the timely recovery of the fault.

[0004] With the completion of the RBN / DGNSS remote monitoring system, unmanned stations are an inevitable trend. Therefore, it is very necessary to remotely monitor and control the differential station antenna tuner (impedance transformation tap switching, "+ / -" key adjustment, etc.), and ultimately realize fully automatic tuning of the antenna tuner itself to ensure the normal operation of the station under all-weather conditions. Summary of the invention

[0005] In order to effectively solve the problems in the background technology and overcome the technical defects in the prior art, the present invention provides the following technical solutions:

[0006] A remote monitoring system for antenna tuners of Fangcheng differential stations, comprising an antenna tuner, wherein the antenna tuner has the following additional functional modules:

[0007] Module 1: Remote control function:

[0008] Including impedance transformation tap switching and motor forward / reverse control ("+ / -" key control), which is the basic function tuning and matching control of the antenna tuner;

[0009] Module 2: Remote alarm monitoring:

[0010] Remote alarm monitoring of antenna tuners mainly refers to providing real-time alarm signals and sound and light alarms when the tuning coil reaches the top or bottom, and sending them to the remote monitoring software in real time;

[0011] Module 3: Remote parameter monitoring:

[0012] Real-time monitoring of antenna tuner parameters such as incident power, reflected power, antenna current and motor voltage, and sending them to remote monitoring software.

[0013] As a preferred technical solution of the present invention, the remote control function can realize remote manual tuning of the antenna tuner on the station integrity PC or the jurisdiction center workstation, that is, the "+ / -" key control of the antenna tuner; it can also realize remote switching control of the antenna tuner impedance transformer taps, that is, the matching function of the antenna tuner.

[0014] As a preferred technical solution of the present invention, the antenna tuner is connected to the maritime intranet switch in the RBN / DGNSS differential station room via an RJ45 network cable, and the monitoring software can be installed on the station integrity monitoring PC of the RBN / DGNSS system, the RBN / DGNSS jurisdiction workstation and the sea area workstation for operation.

[0015] As a preferred technical solution of the present invention, the antenna tuner includes a digital output control module for controlling tap switching of a remote impedance converter of the antenna tuner.

[0016] As a preferred technical solution of the present invention, the antenna tuner includes a digital input / output and an analog measurement module, which is used for remote parameter monitoring of the antenna tuner, namely, real-time monitoring of parameters such as incident power, reflected power, antenna current and motor voltage; remote alarm monitoring and remote control function of motor forward / reverse control ("+ / -" key control).

[0017] As a preferred technical solution of the present invention, the antenna tuner remote monitoring software communicates with the new antenna tuner through the maritime intranet using the TCP / IP protocol to achieve remote impedance transformation tap switching control and remote "+ / -" key tuning control of the antenna tuner; real-time monitoring of remote alarms of the antenna tuner; and real-time monitoring of parameters such as remote incident power, reflected power, antenna current, and motor voltage of the antenna tuner.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the Fangcheng differential station antenna tuner remote monitoring system can realize unmanned operation of the station, remotely monitor and control the antenna tuner of the differential station (impedance transformation tap switching, "+ / -" key adjustment, etc.), and realize fully automatic tuning of the antenna tuner itself, which well ensures the normal operation of the station under all-weather conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a block diagram of the system composition of the present invention.

[0020] Figure 2 The figure is a basic principle block diagram of an antenna tuning and matching device in the prior art.

[0021] Figure 3 This is a block diagram of the new antenna tuning and matching device of the present invention.

[0022] Figure 4 For the present invention Figure 3 Block diagram of the digital output control module in .

[0023] Figure 5 For the present invention Figure 3 Block diagram of the digital input / output and analog measurement modules in.

[0024] Figure 6 The figure is a flow chart of the fully automatic tuning software of the antenna tuner of the present invention.

[0025] Figure 7 It is a schematic diagram of the functional status of the main interface of the software of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 2 As shown, in the prior art, the commonly used antenna types of RBN / DGNSS systems are mainly: T-type antenna and single-tower umbrella antenna. In this working frequency band, the antenna parameters are equivalent to a series circuit of resistance and capacitance, and the resistance is usually very small.

[0028] As a connecting device between the transmitter and the antenna, the antenna tuner plays a key role in ensuring that the transmitter obtains the best matching output.

[0029] Its main functions are:

[0030] (1) Impedance matching: By changing the tap of the matching transformer, the transmitter is provided with the best matching resistance (50 ohms).

[0031] (2) Antenna tuning: The error signal detected by the servo drives the DC motor to tune the reactance component in the antenna input impedance to make it resonant.

[0032] Based on the need to solve the technical problem proposed by the present invention, on the basis of the above prior art, the present invention provides a technical solution: a remote monitoring system for antenna tuners of Fangcheng differential stations, which, on the basis of the antenna tuners completing the basic functions of impedance matching and tuning antennas, requires the following aspects (such as Figure 1 shown):

[0033] 1. Remote control function

[0034] Includes: impedance transformation tap switching and motor forward / reverse control ("+ / -" key control), which is the basic function tuning and matching control of the antenna tuner.

[0035] 2. Remote alarm monitoring

[0036] Remote alarm monitoring of antenna tuners mainly refers to providing real-time alarm signals and sound and light alarms when the tuning coil reaches the top or bottom, and sending them to the remote monitoring software in real time.

[0037] 3. Remote parameter monitoring

[0038] Real-time monitoring of antenna tuner parameters such as incident power, reflected power, antenna current and motor voltage, and sending them to remote monitoring software.

[0039] Specifically, adding remote alarm monitoring and remote parameter monitoring is mainly to ensure that the remote antenna control can be targeted.

[0040] The remote antenna tuner consists of Figure 3 As shown in the figure, the digital output control module is M7061D (12-channel digital signal output) Figure 4 As shown, it is used for antenna tuner remote impedance converter tap switching control. The digital input / output and analog measurement module in the figure is M7061D (4 analog inputs, 5 digital signal inputs and 4 digital signal outputs). Figure 5 As shown, it is used for remote parameter monitoring of antenna tuner, i.e. real-time monitoring of incident power, reflected power, antenna current and motor voltage and other parameters; remote alarm monitoring; remote control function of motor forward / reverse control ("+ / -" key control).

[0041] In addition, if Figure 6 As shown in the figure, the antenna tuner remote monitoring software is connected to the maritime intranet switch in the RBN / DGNSS differential station room through the maritime intranet (specifically, the new antenna tuner is connected to the maritime intranet switch in the RBN / DGNSS differential station room through an RJ45 network cable. The monitoring software can be installed on the station integrity monitoring PC of the RBN / DGNSS system, the RBN / DGNSS jurisdiction workstation and the sea area workstation. The software interface and functions are as follows Figure 7As shown in the figure, the TCP / IP protocol is used to communicate with the new antenna tuner to realize remote impedance transformation tap switching control and remote “+ / -” key tuning control of the antenna tuner; real-time monitoring of remote alarms of the antenna tuner; real-time monitoring of parameters such as remote incident power, reflected power, antenna current, and motor voltage of the antenna tuner, etc.

[0042] When using:

[0043] As a connecting device between the transmitter and the antenna, the antenna tuner plays a key role in ensuring that the transmitter obtains the best matching output.

[0044] The transmitting part consists of a transmitter, an antenna tuner and an antenna.

[0045] The function of the transmitter is to amplify the differential correction data (after MSK modulation) from the GPS reference receiver, and then provide antenna radiation through the antenna tuning matcher after amplification.

[0046] The purpose of an antenna tuner is to:

[0047] Impedance matching----The transmitter output and antenna input impedance are optimally matched (50 ohms).

[0048] Tuned antenna--Tuning the reactance component in the antenna input impedance to make it resonant.

[0049] The transmitting antenna is an important part of the transmitting system. It converts the signal current fed by the transmitter into electromagnetic waves and radiates them into space. The electromagnetic waves propagating in space carry the differential correction information and radio beacon signals generated by the GPS reference receiver of the transmitting station, providing high-precision radio navigation and positioning for users in the coverage area.

[0050] For Fangcheng differential stations where antenna parameters vary greatly, the original antenna tuner is modified (by adding a monitoring unit) and supplemented with video surveillance and lighting (when conditions in the antenna tuner room permit).

[0051] The newly added monitoring unit includes A / D conversion, digital input and output control, etc. The external interface protocol is TCP / IP. It is connected to the maritime intranet switch in the RBN / DGNSS room via a network cable.

[0052] Any computer connected to the maritime intranet can install the antenna tuner remote monitoring software to achieve remote tuning control of the new antenna tuner, switching of impedance converter taps and real-time monitoring of antenna tuner parameters.

[0053] The local switching function of the impedance converter tap in the original antenna tuner is retained, and the newly added remote "automatic switching and + / - key control" is used to achieve a two-choice control. The default switching state is remote automatic switching mode, and it is converted to local switching mode when manual operation is required.

[0054] The automatic switching module adopts industrial standard products with RS485 interface. It can also be easily connected to the existing machine room environmental system, and the newly added software can be more easily integrated with the existing RBN / DGNSS remote monitoring system.

[0055] Since the antenna tuner impedance transformation tap switching and tuning are remotely controlled, in order to improve the monitoring effect of the antenna tuner panel indicator lights and meters, a high-definition digital camera is added to the machine room. This can effectively cooperate with the RBN / DGNSS remote monitoring system to control and monitor the antenna tuner and achieve targeted results.

[0056] A network digital camera is used, which has a simple external interface (1 network cable and a pair of power supplies), which facilitates the laying of lines between the differential station room and the antenna tuning room.

[0057] If conditions permit, an additional lighting fixture can be added to the antenna tuning room to facilitate remote viewing of the antenna tuning panel indications when visibility is poor.

[0058] The lighting can be turned on and off remotely by software.

[0059] The software includes the following modules: local / remote impedance transformation tap switching control, + / - key tuning control, real-time monitoring of antenna tuning parameters, video monitoring, and local antenna tuning fully automatic tuning software, etc.

[0060] Software operating environment: It can be run on the existing station RBN / DGNSS integrity monitoring PC, jurisdiction or sea area workstation.

[0061] like Figure 6 The software process of the fully automatic tuning of the antenna tuner shown in the figure logs into the station environmental monitoring system to obtain the measurement data (incident power Pt, reflected power Pr and antenna current AntC). First, it is judged whether it exceeds the limit according to the Pt and Pr threshold values. If it exceeds the limit, the tap is first changed upward by 1 gear. According to the comprehensive judgment effect, it is decided to continue to shift gears or shift gears in the opposite direction.

[0062] The method for remote tuning and matching of the antenna tuner of the Fangcheng differential station in the present invention is also suitable for other differential stations. In addition, combined with the existing real-time monitoring data (incident power, reflected power, antenna current, etc.), the fully automatic tuning and matching function of the local antenna tuner can be further realized, making it a truly fully automatic antenna tuner that works independently around the clock.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote monitoring system for antenna tuners of Fangcheng differential stations, comprising an antenna tuner, wherein the antenna tuner has the following additional functional modules: Module 1: Remote control function: Including impedance transformation tap switching and motor forward / reverse control ("+ / -" key control), which is the basic function tuning and matching control of the antenna tuner; Module 2: Remote alarm monitoring: Remote alarm monitoring of antenna tuners mainly refers to providing real-time alarm signals and sound and light alarms when the tuning coil reaches the top or bottom, and sending them to the remote monitoring software in real time; Module 3: Remote parameter monitoring: Real-time monitoring of antenna tuner parameters such as incident power, reflected power, antenna current and motor voltage, and sending them to remote monitoring software.

2. The Fangcheng differential station antenna tuner remote monitoring system according to claim 1 is characterized in that: The remote control function can realize remote manual tuning of the antenna tuner on the station integrity PC or the jurisdiction center workstation, that is, the "+ / -" key control of the antenna tuner; it can also realize remote switching control of the antenna tuner impedance converter tap, that is, the matching function of the antenna tuner.

3. The Fangcheng differential station antenna tuner remote monitoring system according to claim 1 is characterized in that: The antenna tuner is connected to the maritime intranet switch in the RBN / DGNSS differential station room via an RJ45 network cable, and the monitoring software can be installed on the station integrity monitoring PC of the RBN / DGNSS system, the RBN / DGNSS jurisdiction workstation and the sea area workstation for operation.

4. The Fangcheng differential station antenna tuner remote monitoring system according to claim 1 is characterized in that: The antenna tuner comprises a digital output control module for controlling tap switching of a remote impedance transformer of the antenna tuner.

5. The Fangcheng differential station antenna tuner remote monitoring system according to claim 1 is characterized in that: The antenna tuner includes a digital input / output and analog measurement module, which is used for remote parameter monitoring of the antenna tuner, namely real-time monitoring of parameters such as incident power, reflected power, antenna current and motor voltage; remote alarm monitoring and remote control function of motor forward / reverse control ("+ / -" key control).

6. The Fangcheng differential station antenna tuner remote monitoring system according to claim 1 is characterized in that: The antenna tuner remote monitoring software communicates with the new antenna tuner through the maritime intranet using the TCP / IP protocol to achieve remote impedance transformation tap switching control and remote "+ / -" key tuning control of the antenna tuner; real-time monitoring of remote alarms of the antenna tuner; and real-time monitoring of parameters such as remote incident power, reflected power, antenna current, and motor voltage of the antenna tuner.

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