CN110868328A - Performance detection system for dual mode communication device - Google Patents

Abstract

An embodiment of the present invention provides a performance detection system for a dual-mode communication device, including: a radio frequency matrix, including at least one splitter and at least one adjustable attenuator, the radio frequency matrix is configured to adjust the at least one adjustable attenuator by adjusting the at least one adjustable attenuator. an attenuator to construct a topology environment; a signal analyzer, connected to the radio frequency matrix, for acquiring signal waveforms from the radio frequency matrix; a signal generator, connected to the radio frequency matrix, for introducing noise into the radio frequency matrix; The shielding box of the central node is connected to the radio frequency matrix through a radio frequency line, and is used to place the equipment to be tested and suppress external interference signals; at least one shielding box of the slave node is connected to the radio frequency matrix through a radio frequency line, and is used to place the equipment to be tested. equipment, and suppress external interference signals. Through the above technical solutions, a simulation environment for power line carrier and micro-power wireless dual-mode communication products can be realized.

Description

Performance testing system for dual-mode communication equipment

technical field

The invention relates to the field of electric power communication, in particular to a performance detection system for power line carrier and micro-power wireless dual-mode communication equipment.

Background technique

As an important part of building a smart grid, the electricity consumption information collection system undertakes the important task of automatic collection and real-time monitoring of electricity consumption information. Selecting a stable, reliable, real-time and safe local communication method is the key to ensuring the safe and stable operation of the system. It affects the reliability and collection success rate of the communication between the concentrator and the collector (electric energy meter).

Power line carrier communication technology can adapt to a variety of business needs. High-speed power line carrier communication can realize 24-hour real-time transmission of massive power consumption information collection data, and obtain various information through functions such as station area identification and phase identification, making big data analysis possible. In addition, high-speed carrier supports the construction of high-speed two-way communication network required for intelligent goals, and strongly supports enterprise power consumption management, energy efficiency management, and smart home interconnection. For electricity sales, based on high-speed carrier waves, power generation and electricity sales companies can obtain important data in a timely manner, and realize the purpose of producing and purchasing according to demand, which will strongly support market-oriented power transactions and promote the healthy development of market-oriented operations.

In the power consumption information collection communication technology, the power line carrier communication technology is generally used at present. The wide application of components and frequency conversion equipment also makes the electromagnetic environment of the power grid more and more complex, resulting in the instability of the communication performance between the smart energy meter and the collection terminal carrier.

Due to the interference and attenuation on the power line, the micro-power wireless technology has its unique advantages. Wireless communication effectively avoids the interference and attenuation on the power line. It is easily interfered by the environment, and the signal is attenuated greatly when penetrating walls and buildings.

With the development of multi-meter centralized reading business requirements such as State Grid Corporation of China, the dual-mode communication technology based on broadband power line carrier (HPLC) communication technology reflects its advantages. The combination of power line carrier and powerless wireless communication is more of a Complementarity, fostering strengths and circumventing weaknesses, and exerting their respective advantages, making the collection performance more reliable.

The production and delivery of any equipment must be tested by various indicators. The dual-mode communication technology also requires the detection of one type of equipment. For the current testing equipment manufacturers, the single-unit testing equipment can only target one type of communication. There is no actual detection equipment for dual-mode communication technology. Some manufacturers claim that they can detect the technical indicators of dual-mode communication, but in reality they only test communication reliability and protocols, and cannot test communication performance. For dual-mode communication, not only the performance of the carrier communication, but also the performance of the wireless communication, as well as the performance indicators and business efficiency when the two communication modes communicate at the same time, must be independently tested.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a performance detection system for dual-mode communication equipment, which can realize the simulation environment of power line carrier and micro-power wireless dual-mode communication products.

In order to achieve the above object, embodiments of the present invention provide a performance detection system for a dual-mode communication device, including:

a radio frequency matrix, including at least one splitter and at least one adjustable attenuator, the radio frequency matrix is used to construct a topology environment by adjusting the at least one adjustable attenuator;

a signal analyzer, connected to the radio frequency matrix, for acquiring signal waveforms from the radio frequency matrix;

a signal generator, connected to the radio frequency matrix, for introducing noise into the radio frequency matrix;

The central node shielding box is connected to the radio frequency matrix through radio frequency lines, used to place the equipment to be tested and suppress external interference signals;

At least one slave node shielding box is connected to the radio frequency matrix through a radio frequency line, and is used for placing the device to be tested and suppressing external interference signals.

In an embodiment of the present invention, the performance detection system further includes:

a switch connected to the radio frequency matrix, the signal generator, the central node shielding box and the at least one slave node shielding box through a network cable; and

The test host computer is connected to the switch through a network cable, and is used for setting, receiving and processing data for the performance detection of the device to be tested.

In an embodiment of the present invention, the radio frequency matrix includes:

The first 5-branch, the first port of the first 5-branch is used to access the signal generator;

A second 5-branch, the first port of the second 5-branch is used to access the signal generator;

A first communication link, the first communication link includes a plurality of adjustable attenuators and a plurality of 3-branchers that are alternately connected in series, and the plurality of adjustable attenuators are respectively located at two ends of the first communication link. The two adjustable attenuators at the end are respectively connected with the second port of the first 5-branch and the second port of the second 5-branch;

A second communication link, the second communication link includes a plurality of adjustable attenuators and a plurality of 3-branchers connected alternately in series, and two of the plurality of adjustable attenuators are respectively located at both ends of the second communication link two adjustable attenuators are respectively connected to the third port of the first 5-splitter and the third port of the second 5-splitter;

A third communication link, the first communication link includes a plurality of adjustable attenuators and a plurality of 3-branchers connected alternately in series, and two of the plurality of adjustable attenuators are located at both ends of the third communication link, respectively. two adjustable attenuators are respectively connected to the fourth port of the first 5-splitter and the fourth port of the second 5-splitter;

The fifth port of the first 5 tap, the fifth port of the second 5 tap, and the third port of the 3 tap are connected to the central node shielding box and the at least one slave node shielding box.

In an embodiment of the present invention, the third communication link further includes:

a first switch for controlling the on-off between the third communication link and the fourth port of the first 5-branch;

The second switch is used to control the on-off between the third communication link and the fourth port of the second 5-split.

In an embodiment of the present invention, the first communication link includes 4 adjustable attenuators and 3 triple splitters;

In an embodiment of the present invention, the second communication link or the third communication link includes 6 adjustable attenuators and 5 3 taps

In an embodiment of the present invention, the adjustable attenuator is an adjustable programmable attenuator.

In an embodiment of the present invention, the central node shielding box or the slave node shielding box includes:

shielding box;

The power interface set on the shielding box;

The network cable interface set on the shielding box;

The radio frequency line interface set on the shielding box;

an equipment fixture for clamping the device to be tested, the equipment fixture is connected to the power interface and the network cable interface; and

A 3-brancher, the first port of the 3-brancher is connected to the radio frequency line interface, the second port is connected to the equipment fixture, and the third port is connected to the radio frequency antenna.

In an embodiment of the present invention, the power interface includes a power line filter isolation device.

In an embodiment of the present invention, the device fixture includes a virtual electric energy meter tooling board.

Through the above technical solutions, a simulation environment for power line carrier and micro-power wireless dual-mode communication products can be realized. By introducing instruments such as spectrum analyzers and signal generators, it is possible to detect not only the working frequency band and power spectral density of dual-mode communication products, but also the transmission power and stray radiation, as well as the anti-noise performance of communication. The performance detection system can not only detect the one-to-one point-to-point communication performance of the dual-mode module, but also the large-scale networking performance of the dual-mode communication module.

Additional features and advantages of embodiments of the present invention are described in detail in the detailed description section that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the embodiments of the present invention, but do not limit the embodiments of the present invention. In the attached image:

1 shows a block diagram of a performance detection system for a power line carrier and a micropower wireless dual-mode communication device according to an embodiment of the present invention;

FIG. 2 shows a schematic structural diagram of a radio frequency matrix according to an embodiment of the present invention;

FIG. 3 shows a schematic structural diagram of a shielding box according to an embodiment of the present invention;

Figure 4 shows a schematic diagram of the structure of the radio frequency matrix when applying networking and multi-meter testing; and

FIG. 5 shows a schematic diagram of the structure of the radio frequency matrix when the station identification test is applied.

Detailed ways

The specific embodiments of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

If there are descriptions involving "first", "second", etc. in the embodiments of the present disclosure, the descriptions of "first", "second", etc. are only for the purpose of description, and should not be construed as indicating or implying their relative Importance or implicitly indicates the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of technical solutions does not exist. , is not within the scope of protection required by the present disclosure.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" or the like is meant to be used in conjunction with the described embodiments. A particular feature, structure, material, or characteristic described in a manner or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

With the promotion of HPLC communication, various deepening application requirements follow closely. For the application requirements that could not be realized by narrowband carrier, HPLC can basically realize all the application requirements. In view of the dual-mode technical conditions, it is not only necessary to support multi-meter The centralized copy also supports station area identification, phase identification, and other possible deepening applications. For the current single-performance test solution of the station body detection device, it cannot meet the test of dual-mode communication, so the detection of dual-mode communication technology urgently needs a station body A comprehensive upgrade and replacement. There is an urgent need for a dual-mode table body detection device. In order for the dual-mode communication technology to exert its due technical advantages and solve the existing multi-meter centralized reading problem, the demand for the dual-mode table body is imperative.

For the existing testing equipment, according to the existing technical level, there is no one table-based testing device solution that has universal applicability, so a single testing device cannot meet the dual-mode testing. After the wireless communication or a single HPLC communication technology product is used, in order to test its performance, it is necessary to purchase two kinds of detection devices at the same time, which is undoubtedly a waste of resources, not only increasing the cost of material resources, but also the cost of labor. The realization of the body can effectively solve this problem. The dual-mode body can test the wireless communication as well as the high-speed power line communication and the requirements of the dual-mode communication. It can not only meet the needs of customers, but also save costs for customers and avoid unnecessary waste of resources. Therefore, the research of this project can improve the reliability of the detection equipment of the electricity information collection system, solve the practical problems on the spot, and effectively reduce the unnecessary waste of manpower and material resources, and will produce considerable economic and social benefits.

In view of this, embodiments of the present invention provide a performance detection system for a power line carrier and a micro-power wireless dual-mode communication device. FIG. 1 shows a block diagram of a performance detection system for a power line carrier and a micropower wireless dual-mode communication device according to an embodiment of the present invention. As shown in Figure 1, the performance detection system may include:

A radio frequency (RF) matrix 110 includes at least one splitter (one splitter corresponds to an N-type RF connector) and at least one adjustable attenuator, and the radio frequency matrix 110 is used to construct a topology environment by adjusting the at least one adjustable attenuator;

The signal analyzer 120 is connected to the radio frequency matrix 110, and is used for acquiring the signal waveform from the radio frequency matrix 110;

a signal generator 130, connected to the radio frequency matrix 110, for introducing noise into the radio frequency matrix 110;

The central node shielding box 140 is connected to the radio frequency matrix 110 through a radio frequency line, and is used for placing the equipment to be tested and suppressing external interference signals;

At least one slave node shielding box 150 is connected to the radio frequency matrix 110 through a radio frequency line, and is used for placing the device to be tested and suppressing external interference signals.

In a further embodiment of the present invention, the performance detection system may further include:

The switch 160 is connected to the radio frequency matrix 110, the signal generator 130, the shielding box 140 of the central node and the at least one shielding box 150 of the slave node through a network cable; and

The test host computer 170 is connected to the switch 160 through a network cable, and is used for setting, receiving and processing data for the performance detection of the device to be tested.

Specifically, the signal analyzer 120 may be known to those skilled in the art for measuring signal parameters such as signal distortion degree, modulation degree, spectral purity, frequency stability and intermodulation distortion. It can also be called frequency domain oscilloscope, tracking oscilloscope, analysis oscilloscope, harmonic analyzer, frequency characteristic analyzer or Fourier analyzer. In the embodiment of the present invention, the signal analyzer 120 can display analysis results in an analog or digital manner, and is mainly used for frequency domain analysis of radio frequency and microwave signals, including measuring the power, frequency, distortion, and the like of the signals.

RF matrix 110 may contain multiple N-type RF connectors, and other devices (eg, signal analyzer 120 ) may be connected to the RF matrix through RF lines.

The signal generator 130 may be a device known to those skilled in the art capable of providing electrical signals of various frequencies, waveforms and output levels. In the embodiment of the present invention, the signal generator 130 is used as a signal source to generate white noise, narrowband noise, impulse noise, etc., to simulate a field communication environment and evaluate the communication performance of the device in the actual communication environment.

The switch 160 may be a data exchange device known to those skilled in the art, may be used for identification based on MAC addresses, and can complete the function of encapsulating and forwarding data packets.

The test upper computer 170 may include a program or software for setting, receiving and processing data for the performance detection of the device under test. Examples of the test host computer 170 may include, for example, a computer, a mobile processing device, a server. The test host computer 170 may include a processor, a memory, a display, and the like.

Examples of processors may include, but are not limited to, general purpose processors, special purpose processors, conventional processors, digital signal processors (DSPs), multiple microprocessors, one or more microprocessors associated with a DSP core, control microcontrollers, application specific integrated circuits (ASIC), field programmable gate array (FPGA) circuits, any other type of integrated circuit (IC), and state machines, among others.

Examples of memory may include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM) ), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic cartridges A tape, disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a processor.

Examples of displays may include, but are not limited to, liquid crystal displays (LCDs), light emitting diode (LED) displays, organic light emitting diode (OLED) displays.

The function of the test host computer 170 will be further described below.

FIG. 2 shows a schematic structural diagram of the radio frequency matrix 110 according to an embodiment of the present invention. As shown in FIG. 2, in an embodiment of the present invention, the radio frequency matrix 110 may include:

the first 5-splitter 112, the first port of the first 5-splitter 112 is used to access the signal generator 130;

The second 5-splitter 114, the first port of the second 5-splitter 114 is used to access the signal generator 130;

The first communication link 115. The first communication link 115 includes a plurality of adjustable attenuators ATT and a plurality of 3-branchers T that are alternately connected in series. The two adjustable attenuators are respectively connected with the second port of the first 5-branch 112 and the second port of the second 5-branch 114;

The second communication link 116, the second communication link 116 includes a plurality of adjustable attenuators and a plurality of 3-branchers connected alternately in series, two of the plurality of adjustable attenuators located at both ends of the second communication link 116 respectively The adjustable attenuator is respectively connected with the third port of the first 5-splitter 112 and the third port of the second 5-splitter 114;

The third communication link 117, the first communication link 115 includes a plurality of adjustable attenuators and a plurality of 3-branchers that are alternately connected in series, and two of the plurality of adjustable attenuators are located at both ends of the third communication link 117, respectively. The adjustable attenuator is respectively connected with the fourth port of the first 5-splitter 112 and the fourth port of the second 5-splitter 114;

The fifth port of the first 5 tap 112 , the fifth port of the second 5 tap 114 , and the third port of the 3 tap are connected to the central node shielding box 140 and at least one slave node shielding box 150 .

Specifically, the splitter may be a device known to those skilled in the art for dividing an input signal into multiple outputs, or conversely synthesizing multiple signals into one output.

As shown in FIG. 2, in a preferred embodiment of the present invention, the first communication link 115 may include 4 adjustable attenuators (ATT 7-10) and 3 3 taps. The second communication link 116 may include 6 adjustable attenuators (ATT 1-6) and 5 3 taps. The third communication link 117 may include 6 adjustable attenuators (ATT 11-16) and 5 3 taps. However, those skilled in the art can understand that any of the first communication link 115 , the second communication link 116 , and the third communication link 117 may include any number of adjustable attenuators and 3-splits. The second communication link 116 and the third communication link 117 may be symmetrically connected with respect to the first communication link 115 . In addition, the 3 taps can also be replaced by other multi-port taps with more than 3 ports, such as 4 taps, 5 taps and so on.

Continuing to refer to FIG. 2 , in the embodiment shown in FIG. 2 , one port of each of the two 5-split taps and the ports of 13 3-split taps can be used to provide 15 ports for connecting 15 shielding boxes (including The central node shielding box 140 and the slave node shielding box 150) (for example, the circles numbered 1 to 15 in the figure). For example, the taps at the same end of the first communication link 115, the second communication link 116, and the third communication link 117 (ie, the taps connected through adjustable attenuators) can be used to access the SNR/NTB test respectively. CCO (Central Coordinator Node), SNR companion CCO and NTB companion CCO. One port of the first 5 tap 112 and one port of the second 5 tap 114 may be used to access the signal generator 130, introducing noise. As seen from FIG. 2 , introducing noise from two channels in a left-right symmetrical manner can make the networking form of the radio frequency matrix 110 more flexible, and can form different topological structures as required.

In the embodiment of the present invention, a switch may be connected between the first port of the first 5-splitter 112 and the signal generator 130 for controlling access to the signal generated by the signal generator 130 . A switch may be connected between the first port of the second 5-splitter 114 and the signal generator 130 for controlling access to the signal generated by the signal generator 130 .

In an embodiment of the present invention, the third communication link 117 may further include:

The first switch K1 is used to control the on-off between the third communication link 117 and the fourth port of the first 5-branch 112;

The second switch K2 is used to control the connection between the third communication link 117 and the fourth port of the second 5-branch 114 .

Although only the first switch K1 and the second switch K2 of the third communication link 117 are shown in FIG. 2 , those skilled in the art will understand that the second communication link 116 may also have control and the first 5 branch 112 and/or an on-off switch between the second 5 taps 114 . Likewise, the first communication link 115 may also have a switch that controls on/off with the first 5 tap 112 and/or the second 5 tap 114 .

Examples of switches may include, but are not limited to, mechanical switches (eg, push-button switches, knife switches) and controllable switches (eg, relays, triodes, MOS transistors, IGBTs, etc.). In the case where the switch is a controllable switch, the controllable switch may be controlled by the test host computer 170 .

Adjustable attenuator is an electronic component that provides attenuation, which can be mainly used to adjust the size of the signal in the circuit, improve impedance matching, etc. In embodiments of the present invention, the adjustable attenuator may be an adjustable programmable attenuator. The adjustment step value of the adjustable attenuator can be, for example, 1 dB. The adjustable attenuator can support the attenuation adjustment range of 0-127dB.

Through the radio frequency matrix 110, each node access and level control can be realized, and a star topology and a tree topology can be realized.

FIG. 3 shows a schematic structural diagram of a shielding box according to an embodiment of the present invention. As shown in FIG. 3 , in the embodiment of the present invention, the shielding box 140 of the central node or the shielding box 150 of the slave node may include:

shielding box;

The power interface set on the shielding box;

The network cable interface set on the shielding box;

The radio frequency line interface set on the shielding box;

a device fixture 210 for clamping the device to be tested, and the device fixture 210 is connected to the power interface and the network cable interface; and

The 3-brancher 220, the first port of the 3-brancher 220 is connected with the radio frequency line interface, the second port is connected with the equipment fixture, and the third port is connected with the radio frequency antenna 230.

Specifically, the shielding box can be designed as a low-frequency shielding box, which can realize spatial signal shielding of two communication modes of high-speed carrier 0.7-12MHz signal and micro-power wireless 470-510MHz signal. The shielding box may have an openable and closable door (eg, electric door 250 ) for loading and removing the device under test into the shielding box and removing the device under test from the shielding box.

In embodiments of the present invention, the power interface may include a filter isolation device 240 . For example, filter isolation device 240 may include power line filter isolation devices, such as filter circuits and isolation circuits. The box can not only introduce 220V strong current to solve the problem of broadband carrier zero-crossing detection, but also isolate the external carrier power line conduction and air radiation signals.

In embodiments of the present invention, the equipment fixture may include a virtual energy meter tooling board. The virtual energy meter tooling board may have the same or similar components and structures as the actual energy meter tooling board.

The central node shielding box 140 can be used to place the central node equipment under test. The shielding box can shield the mutual radiation interference from the space, and provide a pure power supply and test environment through the isolated power supply. For example, the shielding box 140 of the central node can be used to load the test equipment of the master node. Each shielding box can be placed with a local communication module of the concentrator, which is isolated from the shielding box of the slave node and the test instrument through the adjustable attenuator. Shield mutual radiation interference from space and provide a pure network environment. Provides a pristine power environment with isolated power supplies.

The slave node shielding box 150 can be used to place the device under test. The shielding room can shield the mutual radiation interference from the space, and provide a pure power supply and test environment through an isolated power supply. For example, the slave node shielding box 150 can be used to load sub-node test equipment, and each shielding box is open to place multiple (eg, 20) sub-node test modules, multiple (eg, 5) dual-mode II collectors, multiple (eg, 4) Water and gas meters, network isolation from the shielding box of the central node and the test instrument through adjustable attenuators, and can shield the mutual radiation interference from the space, providing a pure network environment. Provides a pristine power environment with isolated power supplies.

An application of the performance detection system provided by the embodiment of the present invention can be used to detect the radio frequency performance, protocol consistency, station area identification, multiple Whether the mode acquisition and other aspects comply with the relevant communication unit detection specifications, and simulate the actual working environment of the communication unit by simulating multi-level network topology, introducing noise, crosstalk in the station area, etc., so as to detect the networking characteristics of the communication unit, and combine the communication unit. Business functions (such as data copying, event reporting, broadcast time, station area identification, multi-meter collection, etc.) are tested accordingly to achieve full performance detection of the communication unit.

According to technical requirements, the performance testing system can be divided into three major subsystems: network communication simulation testing subsystem, station area identification testing subsystem, and multi-meter acquisition function testing subsystem. The main detection range of each subsystem is as follows:

1. Networking communication simulation test subsystem: By simulating scenarios such as large-scale networking, path attenuation, noise interference, etc., the business application indicators of the communication unit in a typical networking environment are detected: including meter reading success rate statistics, agent change, offline Site, event reporting, broadcast school time information, etc. It can simulate and simulate typical scenario tests, and has the ability to simulate and test multi-layer networking simulation services.

2. Station area identification test subsystem: test for HPLC communication unit station area identification and related functional specifications, simulate different station area scenarios, and support high discrimination of SNR (signal-to-noise power ratio) and NTB (network reference time). Simulation of various scenarios with medium and low discrimination.

3. Multi-meter acquisition function test subsystem: collect data of electricity, water, gas, and heat meters, support dual-mode II acquisition, support arbitrary relay jump control and simulation, and support fusion dual-mode testing. Build a multi-meter acquisition test environment, support the isolation control of communication channels in different frequency bands, and support power line and wireless fusion multi-meter acquisition and communication module testing.

FIG. 4 shows a schematic structural diagram of the radio frequency matrix 110 when networking and multi-meter testing (subsystem 1 and subsystem 3) are applied. As shown in FIG. 4, in both application cases, the first communication link 115, the second communication link 116 and the third communication link 117 are all enabled, a 3-branch at both ends of the second communication link 116 One port of the controller is used to connect the main test CCO (central coordinator node), for example, located in the shield box 140 of the central node. The ports of the other 3 taps and 5 taps can be connected to the device under test in the slave node shielding box 150 . In this application, the signal generator 130 introduces a noise signal through two 5 taps.

FIG. 5 shows a schematic diagram of the structure of the radio frequency matrix 110 when the zone identification test (subsystem 2) is applied. As shown in Figure 5, in this application case, the first communication link 115 and the second communication link 116 are enabled and the third communication link 117 is disabled. For example, the third communication link 117 may be switched off (disabled) by adjusting two adjustable attenuators in the third communication link 117 connected to the first communication link 115 . In this case, there is no need to introduce noise (eg, by switching off the signal generator 130 to introduce noise).

During the networking performance test, the following steps can be included:

1. Each shielded room is placed with the central node under test and the communication module from the slave node;

2. Synchronize the file information such as the address of each slave node in the central node;

3. Query topology information in real time, wait for the networking to be completed and the topology to be stable;

4. Statistics of networking success rate, networking time, networking level, etc.

In the multi-table test process, the following steps can be included:

1. Each shielded room is placed with the central node under test and the communication module from the slave node;

2. Synchronize the file information such as the address of each slave node in the central node, including the electric water, gas and heat meter module;

3. Query topology information in real time, wait for the networking to be completed and the topology to be stable;

4. Statistical networking success rate, networking time-consuming, networking level;

5. Carry out the data reading of the electric water, gas and heat meter (multiple readings are possible), and count the success rate of reading and the time-consuming of reading, etc.

The following steps can be included in the identification test process of the station area:

1. Build an RF matrix star or tree topology environment;

2. Set the value of the RF matrix programmable attenuator;

3. The central node A is powered on and the station area identification is started;

4. Wait for the central node A to complete the networking and query the topology information;

5. The central node B is powered on, and the station area identification is started;

6. Wait for the identification of the station area to be completed, query the topology information, and wait for the topology to be stable;

7. Stop the station area identification and judge the correctness of the station area identification.

The performance detection system provided by the embodiment of the present invention can realize the simulation environment of power line carrier and micro-power wireless dual-mode communication products. By introducing instruments such as spectrum analyzers and signal generators, it is possible to detect not only the working frequency band and power spectral density of dual-mode communication products, but also the transmission power and stray radiation, as well as the anti-noise performance of communication. The performance detection system can not only detect the one-to-one point-to-point communication performance of the dual-mode module, but also the large-scale networking performance of the dual-mode communication module.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware implementation, an entirely software implementation, or an implementation combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Memory may include non-persistent memory in computer readable media, random access memory (RAM) and/or non-volatile memory in the form of, for example, read only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media includes both persistent and non-permanent, removable and non-removable media, and storage of information may be implemented by any method or technology. Information may be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.

It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed, or which are inherent to such a process, method, article of manufacture, or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture or apparatus that includes the element.

The above are merely embodiments of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims (10)

1. A performance detection system for a dual mode communication device, comprising:

a radio frequency matrix comprising at least one splitter and at least one adjustable attenuator, the radio frequency matrix being used to construct a topological environment by adjusting the at least one adjustable attenuator;

the signal analyzer is connected with the radio frequency matrix and is used for acquiring signal waveforms from the radio frequency matrix;

the signal generator is connected with the radio frequency matrix and is used for introducing noise to the radio frequency matrix;

the central node shielding box is connected with the radio frequency matrix through a radio frequency line and used for placing equipment to be tested and inhibiting external interference signals;

and the at least one slave node shielding box is connected with the radio frequency matrix through a radio frequency line and used for placing equipment to be tested and inhibiting external interference signals.

2. The performance testing system of claim 1, further comprising:

the switch is connected with the radio frequency matrix, the signal generator, the central node shielding box and the at least one slave node shielding box through network cables; and

and the test upper computer is connected with the switch through a network cable and is used for setting, receiving and processing data aiming at the performance detection of the equipment to be tested.

3. The performance detection system of claim 1, wherein the radio frequency matrix comprises:

a first 5-branch device, wherein a first port of the first 5-branch device is used for accessing the signal generator;

the first port of the second 5-branch device is used for accessing the signal generator;

a first communication link, wherein the first communication link comprises a plurality of adjustable attenuators and a plurality of 3 splitters which are alternately connected in series, and two adjustable attenuators which are respectively positioned at two ends of the first communication link are respectively connected with the second port of the first 5 splitters and the second port of the second 5 splitters;

a second communication link, where the second communication link includes a plurality of adjustable attenuators and a plurality of 3 splitters that are alternately connected in series, and two adjustable attenuators, which are located at two ends of the second communication link, of the plurality of adjustable attenuators are respectively connected to the third port of the first 5 splitters and the third port of the second 5 splitters;

a third communication link, wherein the first communication link includes a plurality of adjustable attenuators and a plurality of 3 splitters which are alternately connected in series, and two adjustable attenuators, which are respectively located at two ends of the third communication link, of the plurality of adjustable attenuators are respectively connected with the fourth port of the first 5 splitters and the fourth port of the second 5 splitters;

the fifth port of the first 5-branch, the fifth port of the second 5-branch, and the third port of the 3-branch are connected to the central node shield box and the at least one slave node shield box.

4. The performance detection system of claim 3, wherein the third communication link further comprises:

the first switch is used for controlling the connection and disconnection between the third communication link and the fourth port of the first 5-branch device;

and the second switch is used for controlling the connection and disconnection between the third communication link and the fourth port of the second 5-branch device.

5. The performance detection system of claim 3, wherein the first communication link comprises 4 adjustable attenuators and 3 splitters.

6. The performance detection system of claim 3, wherein the second communication link or the third communication link comprises 6 adjustable attenuators and 5 3 splitters.

7. The performance detection system of claim 1, wherein the adjustable attenuator is an adjustable programmable attenuator.

8. The performance testing system of claim 1, wherein said central node shielding cage or said slave node shielding cages comprise:

a shielding box;

the power interface is arranged on the shielding box;

the network cable interface is arranged on the shielding box;

a radio frequency line interface arranged on the shielding box;

the equipment clamp is used for clamping equipment to be tested and is connected with the power interface and the network cable interface; and

and a first port of the 3-branch device is connected with the radio frequency line interface, a second port of the 3-branch device is connected with the equipment clamp, and a third port of the 3-branch device is connected with the radio frequency antenna.

9. The performance detection system of claim 8, wherein the power interface comprises a power line filter isolation device.

10. The performance testing system of claim 8, wherein the equipment fixture comprises a virtual power meter tooling plate.

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