WO2013033990A1

WO2013033990A1 - Monitoring method and system and integrated monitoring device for antenna oscillator of base station

Info

Publication number: WO2013033990A1
Application number: PCT/CN2012/073711
Authority: WO
Inventors: 高峰; 何继伟; 朱文涛; 丁勇; 高鹏; 毛纪平; 成院波; 李行政
Original assignee: 中国移动通信集团设计院有限公司; 广东通宇通讯股份有限公司
Priority date: 2011-09-08
Filing date: 2012-04-10
Publication date: 2013-03-14
Also published as: EP2755337A4; EP2755337A1

Abstract

Disclosed are a monitoring method and system and an integrated monitoring device for an antenna oscillator of a base station, which are used to monitor whether an anomaly occurs in the antenna oscillator of the base station. The monitoring method for an antenna oscillator of a base station in the present invention comprises: performing wave detection and analog-to-digital conversion on an obtained transmission signal of the antenna oscillator of the base station, to acquire a digital signal of a direct-current signal of the transmission signal; determining the amplitude of changes of the digital signal in a set time length, and when the amplitude of the changes is greater than a preset amplitude change threshold, determining that an anomaly occurs in the antenna oscillator; otherwise, determining that the antenna oscillator is normal.

Description

Method for monitoring base station antenna oscillator, system and integrated monitoring device The present application claims to be submitted to the Chinese Patent Office on September 8, 2011, application number 201110265386.5, and the invention name is "a monitoring method, system and integration of a base station antenna oscillator" The priority of the Chinese Patent Application for the Monitoring of the Device, the entire contents of which is incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a base station antenna oscillator monitoring method, system, and integrated monitoring device. Background technique

The base station antenna generally adopts a mode of a vibrator array to form an electromagnetic beam having a high gain and satisfying a certain shaping requirement for transmitting a wireless communication signal. At present, base station antennas equipped with more vibrators have gradually become mainstream, especially for Time Division Synchronized Code Division Multiple Access (TD-SCDMA) and Long Term Evolution (LTE) systems. Multiple-input multiple-output (MIMO) antennas not only form an array on the vertical plane of the antenna, but also form a multi-column array in the horizontal plane.

There are many oscillators in the base station array antenna. When one of the antenna oscillators fails to work normally for some reason (for example, short circuit or feed open circuit), the reflection coefficient of the array main port does not deteriorate seriously, and the base station does not emit standing waves. Alarm. However, the array pattern will be significantly affected at this time, such as the lobes are not symmetrical, the side lobes are poorly suppressed, and the gain is reduced.

The prior art provides a standing wave monitoring circuit for monitoring the standing wave ratio of the antenna feeder system of the base station, and outputs a standing wave monitoring circuit of different levels of alarm signals, and a standing wave monitoring method based on the circuit, but the circuit design used by the monitoring method is complicated, and the monitoring object is It is the RF signal at the connection between the antenna feeder and the RF end device. The standing wave condition of the internal vibrator of the base station antenna cannot be detected.

In summary, the prior art only monitors the RF signal between the RF front-end circuit and the antenna feeder port, and gives different levels of alarm signals when the RF signal standing wave is abnormal. However, for large antenna arrays, when the individual vibrators in the antenna have abnormal conditions such as virtual soldering, short circuit, and mechanical structure breakage of the vibrator, the RF signal standing wave connected to the RF front-end circuit of the antenna feeder line does not have obvious abnormality, so it cannot be monitored. The case where the internal oscillator of the antenna array is abnormal. Summary of the invention

Embodiments of the present invention provide a method, a system, and an integrated monitoring device for monitoring a base station antenna oscillator, which are used to monitor whether an antenna of a base station antenna is abnormal.

A method for monitoring a base station antenna element provided by an embodiment of the present invention includes:

Performing detection and analog-to-digital conversion on the acquired transmission signals of the base station antenna elements, respectively, to obtain the transmission signals a digital signal of a direct current signal;

And determining, by the set time length, a variation range of the digital signal. When the variation amplitude is greater than a preset change amplitude threshold, determining that the antenna element is abnormal. Otherwise, determining that the antenna element is normal.

A monitoring system for a base station antenna oscillator provided by an embodiment of the present invention includes:

a signal acquisition unit, configured to acquire a transmission signal of a base station antenna element;

An integrated monitoring device, configured to perform detection and analog-to-digital conversion on the acquired transmission signal of the base station antenna element, to obtain a digital signal of the DC signal of the transmission signal; and determine a variation range of the digital signal within a set time length, When the magnitude of the change is greater than a preset threshold of the magnitude of the change, the antenna oscillator is determined to be abnormal. Otherwise, the antenna oscillator is determined to be normal.

An integrated monitoring device provided by an embodiment of the present invention includes:

a logarithmic detector for receiving a transmission signal of a base station antenna element, and performing detection, and outputting a DC signal of a transmission signal of the base station antenna element to an analog-to-digital converter;

An analog-to-digital converter, configured to convert a DC signal of a transmission signal of a base station antenna element into a digital signal, and output the signal to a microcontroller;

a micro controller, configured to determine a magnitude of the change of the digital signal within a set time length, and when the change amplitude is greater than a preset change amplitude threshold, determine that the antenna vibrator is abnormal, otherwise, determine that the antenna vibrator is normal .

Another integrated monitoring device provided by the embodiment of the present invention includes at least one control unit, where each control unit specifically includes:

a switch for selecting a transmission signal of the base station antenna element to be output to the detector;

a detector, configured to receive a transmission signal of the base station antenna element outputted by the switching switch, and perform detection, and output a DC signal of the transmission signal of the base station antenna element to the controller;

a controller, configured to convert a DC signal of a transmission signal of the base station antenna element into a digital signal, and determine a variation amplitude of the digital signal within a set time length, when the variation amplitude is greater than a preset change amplitude threshold value, Determining that the antenna element is abnormal, otherwise, determining that the antenna element is normal.

In the embodiment of the present invention, the acquired transmission signal of the base station antenna element is respectively subjected to detection and analog-to-digital conversion to obtain a digital signal of the DC signal of the transmission signal; and determining a variation range of the digital signal within a set time length, when the variation range is When the threshold is greater than the preset threshold, the antenna oscillator is abnormal. Otherwise, the antenna oscillator is determined to be normal, thus monitoring whether each oscillator in the base station antenna is abnormal. DRAWINGS

1 is a schematic flowchart of a method for monitoring a base station antenna oscillator according to an embodiment of the present invention;

2 is a schematic diagram of setting a radio frequency coupler and a detection port on a 2 x 4 planar antenna array for a base station according to an embodiment of the present invention; 3 is a schematic diagram of setting a radio frequency coupler and a detection port on a 2 x 4 planar antenna array for a base station according to an embodiment of the present invention;

4 is a schematic diagram of a magnetic ring sensor and a detection port disposed on a 2 x 4 planar antenna array of a base station according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a monitoring system for a base station antenna oscillator according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an integrated monitoring device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a control unit disposed on a base station antenna according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a control unit according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a monitoring system connected to a PC according to an embodiment of the present invention; FIG.

FIG. 10 is a circuit diagram of a control unit according to an embodiment of the present invention;

FIG. 11 is a circuit diagram of a MAX2015 according to an embodiment of the present invention;

FIG. 12 is a structural diagram of a controller according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of an integrated monitoring device according to an embodiment of the present invention. detailed description

Embodiments of the present invention provide a method, a system, and an integrated monitoring device for monitoring a base station antenna oscillator, which are used to monitor whether an antenna of a base station antenna is abnormal. The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

Referring to FIG. 1 , a method for monitoring a base station antenna element provided by an embodiment of the present invention includes the following steps: S101: Perform detection and analog-to-digital conversion on a transmitted signal of a base station antenna element, to obtain transmission of a base station antenna element a digital signal of a signal's DC signal;

S102. Determine a variation range of the digital signal within a set time length. When the change amplitude is greater than a preset change amplitude threshold, determine that the antenna oscillator is abnormal. Otherwise, determine that the antenna oscillator is normal.

Specifically, the foregoing method provided by the embodiment of the present invention may be implemented by adding a corresponding device to the antenna of the base station antenna or by adding a corresponding device to the antenna of the base station, which is not specifically limited herein.

Preferably, the specific method for acquiring the transmission signal of the base station antenna element in the foregoing step S101 may include the following methods:

1. The transmission signal of each final stage power dividing circuit of the base station is coupled by a radio frequency coupler, wherein each final stage power dividing circuit is connected to two or more vibrators of the same polarization.

That is to say, each final stage power dividing circuit of the base station antenna corresponds to two RF couplers, wherein one RF coupler is used to couple the transmitted signal of one polarized antenna, and the other RF coupler is used to couple out the other pole. The transmitted signal of the antenna, that is, the RF coupler corresponds to each polarized antenna element of the base station antenna.

2. The transmission signal of the second-stage power dividing circuit of the base station antenna (that is, the upper-level power dividing circuit of the last-level power dividing circuit) is coupled by the RF coupler, and each last-stage power dividing circuit corresponds to two RF couplers, wherein , for a RF coupler The other RF coupler is used to couple the transmitted signal of the other polarized antenna connected thereto to the transmission signal of the antenna of the same polarization to which it is connected. At this time, each RF coupler corresponds to more than two antenna elements.

By analogy, the transmission signal of the power dividing circuit of any one of the above stages of the base station antenna (the first stage power dividing circuit is the first stage power dividing circuit) is coupled by the RF coupler, and each of the powers of the level is The sub-circuit corresponds to two RF couplers, wherein one RF coupler is used to couple the transmission signal of the same polarized antenna connected thereto, and the other RF coupler is used to couple the transmission signal of the other polarized antenna connected thereto .

The energy of the power split circuit coupled by the RF coupler can be set according to specific practical application requirements, and usually takes a value between 15 and 25 dB.

Both of the above methods are implemented by setting a radio frequency coupler at a corresponding position inside the base station antenna.

3. The transmission signal of the base station antenna oscillator is induced by the magnetic loop sensor.

A magnetic ring sensor may be installed outside the base station antenna, and a magnetic ring sensor is disposed above each base station antenna radiation element, and the transmission signal of each radiation element is induced by electromagnetic induction of the magnetic ring sensor, thereby The effect of extracting the transmission signal of each vibrator is achieved, and the magnetic ring sensor is externally placed on the base station antenna, and the internal structure of the base station antenna does not need to be changed, and the magnetic ring sensor can be disassembled, which is convenient for reuse to the same base station. Monitoring on the antenna.

Preferably, in the foregoing step S102, monitoring whether the base station antenna element is abnormal according to the preset change amplitude threshold value includes:

When the variation amplitude of the digital signal is greater than the preset change amplitude threshold value within the set time length, it is determined that the antenna oscillator corresponding to the digital signal is abnormal, otherwise, the antenna oscillator corresponding to the digital signal is determined to be normal.

The set time length can be set according to specific practical application requirements, for example: 1 second or 1 minute or 1 hour, etc., and is not limited herein.

And the preset threshold of change amplitude can also be set according to the specific practical application requirements, generally taking 1.5~2dB.

Preferably, in the foregoing method provided by the embodiment of the present invention, after determining that the antenna oscillator corresponding to the digital signal is abnormal, the following process is further included:

Generating an alarm signal corresponding to the antenna element, and transmitting the alarm signal to the control platform through the radio frequency cable, or embedding the alarm signal into the radio frequency emitted by the base station antenna element by using an antenna data interface (AISG, Antenna Interface Standards Group) protocol The signal is sent to the control platform through the RF cable connecting the antenna port and the base station, or the alarm signal is sent to the control platform in a wireless manner.

The above control platform is used for real-time monitoring whether the antenna vibrator is abnormal.

In the embodiment of the present invention, the transmission signal of the power division circuit may be coupled by a radio frequency coupler disposed on the power feeding network of the antenna array, and the transmission signal may be a radio frequency signal or a radio frequency reflection signal, and the detection and digital mode are adopted. The conversion circuit extracts a DC digital signal. When a vibrator in the antenna array is damaged, the impedance matching of the feed network fails, the radio frequency reflection signal on the corresponding power sub-circuit is enhanced, and the DC portion of the extracted reflected signal is correspondingly enhanced. The change of the DC signal strength can determine whether the vibrator is working abnormally, and then comprehensively monitor the working state of the entire antenna array.

In the embodiment of the present invention, the transmission signal of each vibrator may be induced by a magnetic ring inductor disposed outside the antenna array, and the transmission signal may be a radio frequency signal or a radio frequency reflection signal, and the DC digital signal is extracted by the detection and digital-to-analog conversion circuit. . When a vibrator in the antenna array is damaged, the radio frequency signal on the radiating element is weakened, and the DC portion of the extracted radio frequency signal is correspondingly weakened. By monitoring the change of the DC signal strength, it can be judged whether the vibrator is working abnormally, and then The entire antenna array is monitored for full operation.

A description of specific embodiments is given below.

The working principle of the technical solution provided by the embodiment of the present invention is described by taking a 2×4 dual-polarized planar array as an example.

The first one is: obtaining a transmission signal of the base station antenna element by means of a radio frequency coupler disposed on the power feeding network of the antenna array and coupling the transmission signal of the power dividing circuit.

For example, Figure 2 shows a common 2 x 4 planar antenna array. The antenna array is divided into 2 columns, each column has 4 vibrators, and each vibrator has 2 cross-feed ports, supporting dual-polarization mode. The antenna has 4 RF ports, which are Port 1, Port 2, Port 3 and Port 4. Ports A through H are detection ports for monitoring base station antenna vibrators in the embodiments of the present invention.

Taking port 1 as an example, the transmission signal input by port 1 passes through the first-stage power dividing circuit (1), and enters the second-stage power dividing circuit, that is, the final-stage power dividing circuit (1) and the final-level power dividing circuit (2). The RF coupler 1 and the RF coupler 2 are placed next to the final stage power dividing circuit (1) and the last stage power dividing circuit (2). The RF signal coupled to RF coupler 1 and RF coupler 2 is transmitted through circuit to Port B and Port A. Port B and Port A are connected by RF cables to the integrated monitoring device at the rear.

For other ports, the same as port 1, see Figure 2, and will not be described here.

For another example, FIG. 3 is also a conventional 2 x 4 planar antenna array. Unlike the above embodiment, the detection ports are increased, and A1 to H2 are detection ports for monitoring the base station antenna elements. Accordingly, the number of RF couplers has also increased. In Fig. 2, the RF coupler is set in units of the final stage power dividing circuit, and in Fig. 3, the RF coupler is set in units of the vibrator.

According to the way of setting the RF coupler and detecting port according to Figure 3, the working condition of each polarized vibrator of each radiating element can be detected. For example, referring to Figure 3, the coupler 1 is used to couple +45 of the radiating element a. The signal of the polarized oscillator is transmitted to the port A1. Therefore, the detection result corresponding to the signal output from the port A1 indicates the operation of the +45° polarizer of the radiating element a.

According to the method of setting the RF coupler and the detecting port according to FIG. 2, the working conditions of the two vibrators of the same polarization corresponding to each final stage power dividing circuit can be detected. For example, referring to FIG. 2, the coupler 1 is used to couple the signals of the +45° polarized vibrators of the radiating elements a and b and transmit them to the port B. Therefore, the detection result of the signal output by the port B indicates the radiation vibration. +45 for elements a and b. The working condition of the polarized oscillator. The second type is: acquiring a transmission signal of the base station antenna vibrator by sensing a transmission signal of each vibrator by a magnetic ring sensor disposed outside the antenna array.

Figure 4 is a conventional 2 x 4 planar antenna array with 2 columns, each with 4 vibrators (&, b, c, d respectively), each with 2 cross feed ports, support Dual polarization mode of operation. In this way, the antenna array has four radio frequency ports, namely antenna port 1, port 2, port 3 and port 4. The ports A to H' are detection ports for monitoring base station antenna elements in the embodiment of the present invention.

The external magnetic ring sensor a to the magnetic ring sensor h are placed above each vibrating element of the base station antenna, and the radio frequency signal is extracted by each magnetic ring sensor above the vibrating element, and the radio frequency signal is transmitted to the corresponding circuit through the circuit. On the port, the port is connected by an RF cable to the integrated monitoring device at the back end.

Based on the same inventive concept, an embodiment of the present invention further provides a monitoring system and an integrated monitoring device for a base station antenna element. The principle of the system and the device for solving the problem is similar to the monitoring method of the foregoing base station antenna element, so the system and For the implementation of the device, refer to the implementation of the method, and the repeated description will not be repeated.

Referring to FIG. 5, a monitoring system for a base station antenna oscillator provided by an embodiment of the present invention includes:

The signal acquisition unit 101 is configured to acquire a transmission signal of the base station antenna element. For example, the transmission signals of the ports A to H in Fig. 2 are uniformly output to the integrated monitoring device 102.

The integrated monitoring device 102 is configured to separately perform detection and analog-to-digital conversion on the acquired transmission signal of the base station antenna element to obtain a digital signal of the DC signal of the transmitted signal; determine the variation range of the digital signal within the set time length, and according to the advance Set the change amplitude threshold to monitor whether the base station antenna vibrator is normal. Specifically, when the change amplitude is greater than the preset change amplitude threshold, determine that the antenna vibrator is abnormal. Otherwise, determine that the antenna vibrator is normal.

The integrated monitoring device 102 can be obtained by integrating an RF power sensor circuit, a RF switching circuit, a microprocessor circuit, a power interface, and a communication interface.

Preferably, the signal acquisition unit 101 may include a radio frequency coupler corresponding to each of the power split circuits of a certain stage of the base station antenna, wherein each of the branches of the power split circuit is respectively placed with a corresponding RF coupler . The above RF coupler is disposed inside the base station antenna.

For example: the signal acquisition unit 101 includes a radio frequency coupler for coupling each final stage power dividing circuit of the base station; or the signal acquisition unit 101 includes a radio frequency coupler for coupling each last stage power dividing circuit of the base station.

Preferably, the signal acquisition unit 101 may also include a magnetic ring sensor for sensing a transmission signal of each base station antenna element. Wherein, the magnetic ring sensor is placed outside the base station antenna.

The integrated monitoring device 102 provided in the embodiment of the present invention may be formed into a separate product in the actual application, or may be integrated into the same product as the signal acquiring unit 101, which is not limited herein.

A structure of the integrated monitoring device 102 provided by the embodiment of the present invention, as shown in FIG. 5, includes:

The log detector 201 is configured to receive a transmission signal of the base station antenna element, and perform detection, and output a DC signal of the radio frequency signal of the base station antenna element to the analog to digital converter 202; The analog-to-digital converter 202 is configured to convert the DC signal of the radio frequency signal of the base station antenna element into a digital signal, and output the signal to the microcontroller 203;

The microcontroller 203 is configured to determine a variation amplitude of the digital signal within a set time length. When the variation amplitude is greater than a preset change amplitude threshold, determine that the antenna oscillator is abnormal. Otherwise, determine that the antenna oscillator is normal.

Preferably, the integrated monitoring device 102 further includes a serial port unit 204, wherein:

The controller 203 is further configured to: after determining that the antenna element is abnormal, generate an alarm signal corresponding to the antenna element, and output the signal to the serial port unit 204;

The serial port unit 204 is configured to convert the alarm signal into a serial signal and send it to the control platform.

The serial port unit 204 can send the alarm signal to the control platform through the radio frequency cable, or send the alarm signal to the control platform wirelessly.

Or, the serial port unit 204 and the control platform further includes an embedding unit 205, wherein the serial port unit 204 is further configured to convert the alarm signal into a serial signal and send the signal to the embedding unit 205;

The embedding unit 205 is configured to embed the serial signal into the radio frequency signal transmitted by the base station antenna element by using an antenna data interface (AISG) protocol, and send the signal to the control platform through an RF cable connecting the antenna port and the base station.

In the specific implementation, the integrated monitoring device 102 further includes a power supply unit 206 for providing power to the controller 203.

The logarithmic detector 201 may be a logarithmic detector of the MAX2015 model; the serial port unit 204 may be a serial port unit of the RS485 model.

In addition, in the above integrated monitoring device 102, the above-described analog-to-digital converter 202 and the microcontroller 203 can be integrated on one chip, for example, the functions of the analog-to-digital converter 202 and the microcontroller 203 are implemented by a chip of the LPC1751 model.

FIG. 6 shows another structure of an integrated monitoring device 102 according to an embodiment of the present invention. The integrated monitoring device includes: at least one control unit, wherein each control unit can control a column of oscillators in the antenna array, as shown in FIG. 7 Show.

The specific structure of each control unit is shown in Figure 8, including:

a controller, configured to convert a DC signal of a transmission signal of the base station antenna element into a digital signal, and determine a variation amplitude of the digital signal within a set time length, and determine the antenna when the variation amplitude is greater than a preset change amplitude threshold value The vibrator is abnormal. Otherwise, the antenna vibrator is determined to be normal.

Preferably, as shown in FIG. 6, the integrated monitoring device further includes: an adapter connected to each control unit; and a controller, configured to generate an alarm signal corresponding to the antenna element after determining that the antenna element is abnormal And output to the adapter;

The adapter is configured to convert the received alarm signal into a serial signal and send it to the control platform. Preferably, the integrated monitoring device further includes an embedded unit, wherein:

The adapter is further configured to convert the received alarm signal into a serial signal and send the signal to the embedded unit;

The embedded unit is configured to embed the serial signal into the radio frequency signal transmitted by the base station antenna element by using the AISG protocol, and send the signal to the control platform through the RF cable connecting the antenna port and the base station.

Among them, as shown in Figure 9, the adapter is mainly used to realize the transfer from RS485 to RS232. RS485 has small transmission loss, which is convenient for long-distance signal transmission. The RS232 interface is easy to connect with the PC, which is convenient for control.

The specific circuit diagram of the above control unit is shown in FIG. 10. Preferably, the control unit has a plurality of switch switches, and the plurality of switch switches are connected in a cascade manner, and the RF1 and RF2 pins of the switch are respectively used for input. The transmission signal of the antenna of the different base station antennas, the RFC pin of the switch is used to output the transmission signal of the antenna element selected by the switch to the detector or the switch to the next stage.

The detector can be a multi-stage log amp of the MAX2015 model. Its internal structure is shown in Figure 11. It is used to accurately convert the transmitted signal power from 0.1GHz to 3GHz to the corresponding DC voltage. The log amp has excellent dynamic range and accurate temperature performance, including automatic gain control (AGC), transmitter power measurement, and Received Signal Strength Indication (RSSI) in the terminal. The DC voltage is directly converted into digital information by A/D inside the control unit (MCU), and the working condition of the antenna can be known by comparing with the reference value.

The circuit diagram of the controller is shown in Figure 12, in which the A/D conversion is integrated in the controller, which reduces the errors caused by many external factors, such as the accuracy of multiple ICs, resistors, and capacitors. Affect system errors, thereby improving system accuracy.

FIG. 13 shows another specific structure of the integrated monitoring device 102 provided by the embodiment of the present invention. The integrated monitoring device includes: a switch, a logarithmic detector MAX2015, a microcontroller MCU (LPC1751), an RS485 serial port, and a power conversion Circuit. Among them, the power conversion circuit is used for the logarithmic detector MAX2015, the microcontroller MCU

(LPC1751) and RS485 serial port power supply. The switch can select the transmission signal of the base station antenna element to be output to the log detector MAX2015. For example, the signals of the detection ports A to D shown in FIG. 2 can be periodically selected, or

The signals of the detection ports E to H shown in 2 are output to the log detector MAX2015. Of course, the switch can also directly input the signals of the detection ports A to H to the log detector without setting.

The integrated monitoring device uses the LPC1751 low-power chip, which uses the ARM Cortex-M3 V2 version of the 32-bit RISC core, operates at 100MHz, has a built-in high-speed memory and a high-speed 12-bit resolution analog-to-digital converter.

(ADC), working at -40. C to 105. C temperature range. The power conversion circuit has a supply voltage of 2.0V to 3.6V. The chip LPC1751 integrates an RF power sensor circuit, a RF switch circuit, a microprocessor circuit, a power interface, and a communication interface. The control software used in the microprocessor circuit can accurately measure the amount of RF signal change from port A to H and output an alarm signal for monitoring by the communication device.

Among them, a multi-stage logarithmic amplifier MAX2015 can be set, for example, a two-stage logarithmic amplifier can be set.

MAX2015, a logarithmic amplifier MAX2015 for letters on port A, port B, port C, and port D output The number is detected; another logarithmic amplifier, the MAX2015, is used to detect the signals output by Port E, Port F, Port G, and Port H.

Each logarithmic amplifier MAX2015 converts the RF signal from a power divider circuit in the 0.1GHz to 3GHz frequency range to a corresponding DC signal. The log amp has a large dynamic range and precise temperature performance. The MAX2015 also operates in controller mode, which measures, compares, and controls the output power of the variable gain amplifier as part of a fully integrated automatic gain control (AGC) loop. The log amp has a wider measurement range and higher accuracy than the diode-based controller, at -40. C to +85. C has excellent temperature stability over the entire working range.

In the embodiment of the present invention, when one or two of the two vibrators below the right column antenna of FIG. 2 are all damaged and cannot work normally, the impedance matching of the feed network fails, and the power split circuit composed of the two vibrators The RF reflected signal will be enhanced, and the DC portion of the extracted RF reflected signal will be correspondingly enhanced. By monitoring the change of the DC signal strength, it can be judged whether the vibrator is working abnormally.

The RF signal outputted through the A port is detected, rectified, and analog-digital converted, and then transmitted to the control platform through a wired (communication cable through the antenna port according to the AISG protocol) or wirelessly, and can be monitored through the display device of the control platform. The working state of the antenna vibrator enables remote monitoring. In the embodiment of the present invention, regarding the terminal O B, the port C, the port D, the port E, the port F, the port G, and the port H, the measurement and monitoring principle is the same as the above principle for the port A. Therefore, the embodiment of the present invention can monitor the working condition of the antenna vibrator corresponding to each port.

It can be seen that the integrated monitoring device provided by the embodiment of the present invention has the following features:

Small in size, it can be integrated in the base station antenna feed network part or externally placed on the base station antenna. It can monitor the base station antenna in the network in real time without changing the internal structure of the antenna, and is detachable, which is convenient for the same antenna. Measurement

High measurement accuracy;

The return loss (ie, standing wave ratio) of the antenna specific power dividing circuit can be measured online, and the alarm signal is output; it is convenient to use.

In summary, the monitoring system for the antenna of the base station antenna provided by the embodiment of the present invention is coupled with the RF reflection signal by the RF coupler disposed at the power split circuit of the array antenna power split circuit, or by the magnetic loop sensor external to the array antenna. The RF signal of the output oscillator is connected to the coupled signal outputted by the RF coupler or the sensing signal outputted by the magnetic loop sensor to the logarithmic detector and the digital-to-analog converter, and the DC signal corresponding to the RF signal is output; the output DC signal is processed by the micro-processing The device monitors and changes its changes in real time to reflect the change of the RF signal of the array antenna oscillator; the obvious change of the DC signal is monitored by the microprocessor and connected to the display device, and the alarm signal in this state is directly given by the display device.

The technical solution provided by the embodiment of the present invention is not limited to the monitoring applied to the 2 x 4 dual-polarized planar array, and can also be applied to the monitoring of all array antennas including two or more antenna elements, including the TD-SCDMA smart antenna. ,

Antennas and other base station antennas in the LTE system.

Compared with the prior art, the technical solution provided by the embodiment of the present invention has a simple structure, is low in cost, and is convenient for batch produce. At the same time, the technical solution provided by the embodiment of the present invention can directly detect the abnormal transmission signal of the array antenna vibrator, and thus can accurately determine the abnormality of the antenna operation caused by the damage of the individual vibrator. However, the existing base station standing wave alarm technical solution has limited judgment capability, and the individual vibrators are damaged, and the standing wave of the main port of the antenna does not change much, so the alarm signal is not given, but the parameters such as the antenna pattern may be significantly different.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. A system that implements the functions specified in a block or blocks of a flow or a flow and/or a block diagram of a flowchart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a set mode, such that instructions stored in the computer readable memory produce an article of manufacture including an instruction system. The instruction system implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

A method for monitoring a base station antenna oscillator, characterized in that it comprises:

Performing detection and analog-to-digital conversion on the acquired transmission signals of the base station antenna elements to obtain a digital signal of the DC signal of the transmission signal;

Determining a change amplitude value of the digital signal within a set time length, and determining that the antenna element is abnormal when the change amplitude value is greater than a preset change amplitude threshold value; otherwise, determining that the antenna element is normal.

The method according to claim 1, wherein the method for acquiring a transmission signal of the base station antenna element comprises:

Transmitting a transmission signal of a final stage power dividing circuit of the base station through a radio frequency coupler, wherein each last stage power dividing circuit is connected to two or more vibrators of the same polarization; or

Transmitting, by the RF coupler, a transmission signal of the second-stage power dividing circuit of the base station, wherein each last-stage power dividing circuit is connected to two or more vibrators of the same polarization; or

The transmission signal of the base station antenna element is induced by the magnetic ring sensor.

The method according to claim 1 or 2, wherein after determining that the antenna element is abnormal, the method further comprises:

An alarm signal corresponding to the antenna element is generated, and the alarm signal is sent to the control platform.

The method according to claim 3, wherein the sending the alarm signal to the control platform comprises:

Sending the alarm signal to the control platform via the RF cable; or

天线Using the antenna data interface, the AISG protocol embeds the alarm signal into the RF signal transmitted by the base station antenna oscillator, and sends it to the control platform through the RF cable connecting the antenna port and the base station; or

The alarm signal is sent to the control platform wirelessly.

5. A monitoring system for a base station antenna oscillator, characterized in that:

The system according to claim 5, wherein the signal acquisition unit comprises a radio frequency coupler for coupling each final stage power dividing circuit of the base station, wherein each last stage power dividing circuit is connected to two Or two or more vibrators of the same polarization.

7. The system according to claim 5, wherein the signal acquisition unit comprises a coupling base Each time the RF coupler of the final stage power dividing circuit is stationed, each of the last stage power dividing circuits connects two or more vibrators of the same polarization.

8. The system according to claim 5, wherein the signal acquisition unit comprises a magnetic ring sensor for sensing a transmission signal of each base station antenna element.

The system according to any one of claims 5 to 8, wherein the integrated monitoring device comprises: a logarithmic detector for receiving a transmission signal of a base station antenna element, and performing detection, outputting a base station antenna element The DC signal of the transmitted signal to the analog to digital converter;

The system according to any one of claims 5 to 8, wherein the integrated monitoring device comprises at least one control unit, wherein each of the control units specifically comprises:

11. An integrated monitoring device, comprising:

The device according to claim 11, further comprising a serial port unit, wherein: the 4 controller is further configured to generate an alarm signal corresponding to the antenna element after determining that the antenna element is abnormal And output to the serial unit;

The serial port unit is configured to convert the alarm signal into a serial signal and send the signal to the control platform.

The device according to claim 12, further comprising an embedding unit, wherein: the serial port unit is further configured to convert the alarm signal into a serial signal and then send the signal to the embedded unit; , for using the antenna data interface AISG protocol to embed the serial signal into the base station antenna oscillator The radio frequency signal is transmitted to the control platform through an RF cable connecting the antenna port and the base station.

An integrated monitoring device, comprising: at least one control unit, wherein each control unit specifically comprises:

The device according to claim 14, wherein the control unit comprises a plurality of switch switches, and the plurality of switch switches are connected in a cascade manner, and the RF1 and RF2 pins of the switch are respectively used for inputting differently. The transmission signal of the base station antenna element, the RFC pin of the switch is used to output the transmission signal of the antenna element selected by the switching switch to the detector or the next-stage switching switch.

The device according to claim 14, further comprising an adapter connected to each of the control units, wherein

The controller is further configured to: after determining that the antenna element is abnormal, generate an alarm signal corresponding to the antenna element, and output the signal to the adapter;

The adapter is configured to convert the received alarm signal into a serial signal and send the signal to the control platform.

17. The device according to claim 16, further comprising an embedding unit:

The adapter is further configured to convert the received alarm signal into a serial signal and send the signal to the embedded unit; the embedded unit is configured to embed the serial signal into the base station antenna oscillator by using an antenna data interface AISG protocol The RF signal is sent to the control platform through an RF cable connecting the antenna port and the base station.