CN112436903A - Test system - Google Patents
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- CN112436903A CN112436903A CN202011278009.0A CN202011278009A CN112436903A CN 112436903 A CN112436903 A CN 112436903A CN 202011278009 A CN202011278009 A CN 202011278009A CN 112436903 A CN112436903 A CN 112436903A
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- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0087—Monitoring; Testing using service channels; using auxiliary channels using auxiliary channels or channel simulators
Abstract
The application provides a test system, this test system includes: the shielding cabinet is used for acquiring real-time data of a test object, and comprises a darkroom for mounting the test object, the test object at least comprises a micro-power unit and a first electric energy meter terminal, and the first electric energy meter terminal is an electric energy meter terminal which communicates through a micro-power wireless communication network; the general cabinet is in communication connection with the shielding cabinet and is used for sending interference signals to the shielding cabinet and acquiring real-time data; and the simulation master station is in communication connection with the universal cabinet and is used for receiving the real-time data and analyzing the real-time data to obtain a test result. The test system improves the accuracy of the test and solves the problem that the test system can not simulate the field environment in the prior art.
Description
Technical Field
The application relates to the field of micro-power wireless communication, in particular to a test system.
Background
With the continuous promotion of power consumption intelligent construction, various wireless communication products are used for metering equipment and intelligent interaction terminals, so that all power users and gateways are comprehensively covered, the online monitoring of a metering device and the real-time acquisition of important information such as user load, electric quantity, voltage and the like are realized, basic data are timely, completely and accurately provided for related systems, support is provided for the analysis and decision of each link of enterprise operation management, and an information basis is provided for realizing intelligent bidirectional interaction service.
At present, the power grid can only realize the detection of a single downlink wireless channel of a local wireless communication system, and is used for realizing the quality detection and performance evaluation of related equipment. The loop link in the local wireless communication system does not have simulation capability, and particularly cannot simulate the field environment, so that the comprehensive evaluation and simulation of the micropower wireless communication cannot be performed in combination with the field. Therefore, there is a need to establish and improve laboratory detection capability and evaluation environment of power, and solve problem analysis and evaluation of micro-power wireless communication channel. In order to meet the requirements of the technology and application of the four-meter centralized meter reading, it is also necessary to establish communication detection and protocol research of the four-meter centralized meter reading in a laboratory based on the field environment of the four-meter centralized meter reading so as to perform comprehensive integrated evaluation and research on the technology and scheme, and improve the detection level and capability of the existing laboratory for the four-meter centralized meter reading.
Unlike a common data communication line, which is originally intended for transmission of power rather than data, for data communication, the channel characteristic is not ideal, and the transmission channel is very unstable, which is characterized by significant noise and severe signal attenuation. Compared with a network cable or an aerial signal with clean and constant characteristics, the power line is connected with a plurality of electric devices, and the electric devices can be plugged in or disconnected at any time, so that the characteristics of the power line are continuously changed. In order to overcome the above problems, a complete evaluation environment is also needed urgently based on the broadband carrier communication technology, so that quantitative and qualitative measurement of the technology and products is realized.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The main objective of the present application is to provide a test system to solve the problem that the test system in the prior art cannot simulate the field environment.
According to an aspect of an embodiment of the present invention, there is provided a test system including: the shielding cabinet is used for acquiring real-time data of a test object, and comprises a darkroom for mounting the test object, the test object at least comprises a micropower unit and a first electric energy meter terminal, and the first electric energy meter terminal is an electric energy meter terminal which communicates through a micropower wireless communication network; the general cabinet is in communication connection with the shielding cabinet and is used for sending an interference signal to the shielding cabinet and acquiring the real-time data; and the simulation master station is in communication connection with the universal cabinet and is used for receiving the real-time data and analyzing the real-time data to obtain a test result.
Optionally, there are a plurality of the darkrooms, and one darkroom is provided with a plurality of the test objects.
Optionally, the test object further includes a collector, a dual-mode unit, a four-meter centralized reading terminal, a PLC unit, and a second electric energy meter terminal, where the dual-mode unit communicates through a micro-power wireless communication network or a broadband carrier, and the second electric energy meter terminal communicates through a broadband carrier.
Optionally, the test system further comprises: the combiner is in communication connection with the darkroom and is used for combining multiple paths of signals corresponding to the multiple kinds of real-time data into one path; and the attenuator is respectively in communication connection with the combiner and the general cabinet and is used for attenuating the corresponding signals of the real-time data.
Optionally, the universal cabinet comprises: a signal source for generating an interference signal; and the concentrator is in communication connection with the attenuator and is used for acquiring the real-time data.
Optionally, the universal cabinet further comprises a chamber, wherein the signal source and the concentrator are placed in the chamber, and the chamber is used for isolating radio waves from the outside.
Optionally, the test system further comprises: and the coupler is respectively in communication connection with the darkroom and the signal source and is used for transmitting the interference signal to the darkroom.
Optionally, the universal cabinet further comprises: the first interface controller is respectively in communication connection with the signal source, the coupler, the attenuator and the concentrator and is used for controlling the connection and disconnection of a channel between the signal source and the coupler and a channel between the attenuator and the concentrator; and the second interface controller is respectively in communication connection with the concentrator and the simulation master station and is used for controlling the on-off of a channel between the concentrator and the simulation master station.
Optionally, the analog master station comprises: the configuration module is in communication connection with the universal cabinet and is used for editing the real-time data into a protocol file, and the protocol file is binary format data; the analysis module is in communication connection with the configuration module and is used for analyzing the protocol file to obtain test data, and the test data is JSON format data; the database module is used for storing evaluation data, and the evaluation data are data required by testing; and the test module is in communication connection with the analysis module and the database module and is used for analyzing according to the test data and the evaluation data to obtain a test result.
Optionally, the test system further comprises: and the display equipment is in communication connection with the simulation master station and is used for displaying the test result.
In the embodiment of the invention, in the test system, the test object is installed in a darkroom of a shielding cabinet, the shielding cabinet collects real-time data of the test object, the universal cabinet sends an interference signal and a micro-power wireless signal to the shielding cabinet and obtains the real-time data, and the simulation master station receives the real-time data and analyzes the real-time data to obtain a test result. The test system sends interference signals to the shielding cabinet through the universal cabinet, influences test objects in the shielding cabinet, simulates various communication environments and interferences of actual field environments, the simulation master station obtains real-time data of the test objects through the universal cabinet and analyzes the real-time data to obtain test results, test accuracy is improved, and the problem that the test system cannot simulate the field environments in the prior art is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a schematic diagram of a test system according to an embodiment of the present application;
fig. 2 shows a schematic diagram of a seven-level routing structure according to an embodiment of the present application.
Wherein the figures include the following reference numerals:
10. shielding the cabinet; 11. a darkroom; 20. a general-purpose cabinet; 21. a signal source; 22. a concentrator; 23. a first interface controller; 24. a second interface controller; 30. simulating a master station; 31. a configuration module; 32. an analysis module; 33. a database module; 34. a test module; 40. a combiner; 50. an attenuator; 60. a coupler; 70. a display device.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As mentioned in the background, the prior art test system cannot simulate a field environment, and in order to solve the above problems, in an exemplary embodiment of the present application, a test system is provided.
According to an embodiment of the present application, a test system is provided.
FIG. 1 is a schematic diagram of a test system according to an embodiment of the present application. As shown in fig. 1, the test system includes:
the shielding cabinet 10 is configured to collect real-time data of a test object, where the shielding cabinet 10 includes a darkroom, the darkroom 11 is configured to install the test object, the test object includes at least a micropower unit and a first electric energy meter terminal, and the first electric energy meter terminal is an electric energy meter terminal that communicates through a micropower wireless communication network;
a universal cabinet 20, communicatively connected to the shielding cabinet 10, configured to send an interference signal to the shielding cabinet 10 and obtain the real-time data;
and the simulation master station 30 is in communication connection with the universal cabinet 20 and is used for receiving the real-time data and analyzing the real-time data to obtain a test result.
In the test system, a test object is installed in a darkroom of a shielding cabinet, the shielding cabinet collects real-time data of the test object, a universal cabinet sends an interference signal and a micro-power wireless signal to the shielding cabinet and obtains the real-time data, and a simulation master station receives the real-time data and analyzes the real-time data to obtain a test result. The test system sends interference signals to the shielding cabinet through the universal cabinet, influences test objects in the shielding cabinet, simulates various communication environments and interferences of actual field environments, the simulation master station obtains real-time data of the test objects through the universal cabinet and analyzes the real-time data to obtain test results, test accuracy is improved, and the problem that the test system cannot simulate the field environments in the prior art is solved.
It should be noted that the functions of the test system include: simulating different district file management and district crosstalk to evaluate node management and node capacity; flexibly constructing routing levels and dynamically demonstrating communication protocol interaction flows among slave nodes of different routing levels to verify an optimal routing path; influence of dynamic attenuation of radio frequency paths, noise (co-frequency interference and adjacent frequency interference) and external interference on a micropower wireless communication link; data analysis, including air protocol analysis, networking beacon time slot analysis and network field intensity analysis; and evaluating the effect of the field intensity threshold in different application scenes, and realizing the configuration of the field intensity threshold aiming at different application scenes, so that the robustness of the communication network is better.
It should be further noted that the test system adopts a standard cabinet for packaging, reasonably setting the flow, optimizing the path and the floor area, so as to realize the high efficiency and optimization of the system, and in addition, by effectively integrating the standardized measuring instrument, the cabinet and the automated evaluation and simulation software, the field micropower wireless communication channel simulation model is applied to the instrument and the device, so as to simulate various communication environments and interferences of the actual field environment, realize more comprehensive simulation and evaluation, and have automatic integration and modularization.
In one embodiment of the present application, there are a plurality of the darkrooms, and one of the darkrooms is provided with a plurality of the test objects. Specifically, the darkroom is divided into two-layer about, can embed two trays to the ammeter is taken as an example, can place or 6 single-phase or three-phase electric energy meters of fixed connection on every tray, and 12 single-phase or three-phase electric energy meters can be placed to a darkroom promptly to realize the batch test, the tray can be drawn outward in a flexible way, and the door of darkroom needs manual opening or closed, is convenient for get and puts.
It should be noted that the darkroom is for establishing a simulated wireless environment, supports various interfaces and auxiliary antennas, so as to realize on-site wireless communication channel simulation, and the interfaces include an RS232 serial port, an RS485 serial port, an RS422 serial port, a plurality of SMA radio frequency interfaces, a 220V strong current interface, a 5V weak current interface, a 12V weak current interface and a 24V weak current interface. Preferably, the shielding cabinet is an electromagnetic wave shielding cabinet, and the darkroom is an electromagnetic wave darkroom.
In an embodiment of the application, the test object further includes a collector, a dual-mode unit, a four-meter centralized reading terminal, a PLC unit, and a second electric energy meter terminal, where the dual-mode unit communicates through a micro-power wireless communication network or a broadband carrier, and the second electric energy meter terminal communicates through the broadband carrier. Specifically, the test system has various test objects, namely, the test system has strong expandability, can be flexibly expanded according to the workload and the project content, can be compatible with four-meter centralized meter reading based on micro-power wireless communication, and can be seamlessly transited to broadband carrier communication through upgrading.
In an embodiment of the present application, as shown in fig. 1 and fig. 2, the testing system further includes a combiner 40 and an attenuator 50, wherein the combiner 40 is in communication connection with the darkroom 11, and the combiner 40 is configured to combine multiple corresponding signals of multiple types of the real-time data into one path; the attenuator 50 is respectively connected to the combiner 40 and the general cabinet 20 in a communication manner, and the attenuator 50 is configured to attenuate a signal corresponding to the real-time data. Specifically, the attenuator is in communication connection with the darkroom through a combiner, the darkroom collects real-time data to generate corresponding signals, the combiner combines multiple corresponding paths of signals of the real-time data into one path, and then the combined signals are sent to the attenuator to be transmitted to the general cabinet through the attenuator, and the shielding cabinet is in a modular design and is easy to move, maintain and isolate faults.
It should be noted that the attenuator adopts a design mode of a touch screen and a main control board, and simulates the transmission attenuation performance of a wireless signal in an actual environment by setting a proper attenuation value, preferably, the dynamic adjustment range of the attenuator is 6-75 dB, the step is 1dB, the attenuator can be manually adjusted, and can also be remotely adjusted through software, the attenuator is packaged with a protocol analysis unit, the protocol analysis unit is used for collecting and analyzing a communication protocol message and a flow of actual interaction of a micropower wireless communication network in real time, preferably, the working frequency range of the protocol analysis unit is 100 MHz-1000 MHz, and the receiving level range is-102 dBm- +17 dBm.
It should be further noted that the combiner is a two-power splitter/combiner, signals of real-time data collected by two darkrooms are combined into one path through the two-power splitter/combiner, a plurality of two-power splitters/combiners can be used to send multiple paths of signals to the general cabinet, signals sent by the general cabinet can be equally divided into two paths of signals through the two-power splitter/combiner, and a plurality of two-power splitters/combiners can be used to send signals to a plurality of darkrooms respectively, for example, as shown in fig. 2, each concentrator is connected with 7 darkrooms in a straight line connection manner, so as to form a seven-level routing structure.
In one embodiment of the present application, as shown in fig. 1, the universal cabinet includes a signal source 21 and a concentrator 22, the signal source 21 is configured to generate an interference signal; the concentrator 22 is communicatively connected to the attenuator, and the concentrator 22 is configured to obtain the real-time data. Specifically, radio frequency analog interference signals are generated, the interference signals include common-frequency signals, adjacent-frequency signals and field interference signals, the concentrator is in communication connection with the attenuator to acquire the real-time data, and more specifically, the universal cabinet 2 is a 19-inch standard cabinet, and at most, three concentrators or virtual concentrators can be supported to work simultaneously, so that the movement and the fixation are convenient.
The frequency range of the interference signal is 9kHz to 3GHz, the output power is-144 dBm to +26dBm, the modulation and demodulation mode supported by the signal source supports the playback function and the real-time signal generation, the signal source is provided with an external modulation port used for inputting the customized baseband signal, the communication interface of the signal source supports 1000BaseT LAN, USB 2.0 and GPIB SCPI, and the signal source is compatible with cellular, audio and video broadcasting, detection, positioning, tracking and navigation.
In an embodiment of the present application, the universal cabinet further includes a chamber, the signal source and the concentrator are disposed in the chamber, and the chamber is used for isolating radio waves from the outside. Specifically, the chamber is a multifunctional electromagnetic wave chamber, so that radio waves outside the chamber are isolated, and the interference of the radio waves on the signal source and the concentrator is avoided.
It should be noted that a protocol analysis unit is encapsulated in the chamber, and the protocol analysis unit is used for collecting and analyzing the communication protocol messages and flows of the actual interaction of the micropower wireless communication network in real time, preferably, the operating frequency range of the protocol analysis unit is 100 MHz-1000 MHz, and the receiving level range of the protocol analysis unit is-102 dBm- +17 dBm.
It should be noted that, in order to further reduce the interference of external radio waves to the test, the cell is required to suppress radio signals with frequencies below 3.0GHz by more than 70dB, and the design is made with reference to the relevant technical parameters of the standard radio commission, and the radio frequency coupling device used in the application occasion of the radio frequency-related characteristics should be selected to match the radio frequency parameters of the tested communication unit. The main technical parameters of the chamber are as follows: the isolation frequency of cell reaches 3.0GHz, all communication ports, radio frequency port and the power port of cell should adopt the EMI wave filter, the shielding door of the multi-functional electric wave cell of cell should adopt step motor closed mode, can not adopt pneumatic mode, make the cell have the suppression more than 70dB to the radio signal of frequency below 3.0GHz, the cell has absorbing material, and wave-absorbing performance is greater than 20dB, the cell should be less than 30dB to the coupling loss between radiation source and the communication module of being surveyed, the change volume is no more than 2 dB.
In an embodiment of the present application, as shown in fig. 1, the testing system further includes a coupler 60, and the coupler 60 is respectively connected in communication with the darkroom 11 and the signal source 21, and is configured to transmit the interference signal to the darkroom 11. Specifically, the coupler is a radio frequency coupler, the signal source is connected with the darkroom through the radio frequency coupler to form a noise link, the input end of the radio frequency coupler is connected with a noise channel and a micropower wireless channel of the signal source, the output end of the radio frequency coupler is connected with the darkroom, and the radio frequency coupler transmits the interference signal to the darkroom to influence a test object in the darkroom.
In an embodiment of the present application, as shown in fig. 1, the universal cabinet 20 further includes a first interface controller 23 and a second interface controller 24, where the first interface controller 23 is respectively connected to the signal source 21, the coupler 60, the attenuator 50, and the concentrator 22 in a communication manner, and the first interface controller 23 is configured to control on/off of a channel between the signal source 21 and the coupler 60 and a channel between the attenuator 50 and the concentrator 22; the second interface controller 24 is communicatively connected to the concentrator 22 and the analog master station 30, respectively, and the second interface controller 24 is configured to control on/off of a channel between the concentrator 22 and the analog master station 30. Specifically, the universal cabinet centrally manages the connection and disconnection of channels between the devices through the first interface controller and the second interface controller, and reduces the probability of communication faults.
In an embodiment of the present application, as shown in fig. 1, the simulation master station 30 includes a configuration module 31, an analysis module 32, a database module 33, and a test module 34, where the configuration module 31 is in communication connection with the universal cabinet 20, the configuration module 31 is configured to edit the real-time data into a protocol file, and the protocol file is binary format data; the parsing module 32 is in communication connection with the configuration module 31, and the parsing module 32 is configured to parse the protocol file to obtain test data, where the test data is JSON format data; the database module 33 is used for storing evaluation data, and the evaluation data is data required by the test; the test module 34 is in communication with the analysis module 32 and the database module 33, and the test module 34 is configured to analyze the test data and the evaluation data to obtain a test result. Specifically, the simulation master station is an industrial computer, the database module is mainly added with a MYSQL interface for storing data, the test module comprises a memory and a processor, the memory stores a test program, and the processor executes the test program to analyze the test data and the evaluation data to obtain a test result.
The simulation master station further comprises a UI interface for displaying, wherein the UI interface mainly comprises an instrument parameter configuration module, an interface display module, a main interface module, a log module, a recording module and the like, the instrument parameter configuration mainly realizes the setting of a signal source, the display interface mainly comprises a logo icon, a main menu and a calendar window, the test main interface mainly realizes the addition and modification of a test scheme, a test item, test statistics and the like, the test log mainly comprises a test data display part and a control console, the test data display mainly displays a test result, and the control console prints and displays the whole test process; and the control recording module displays the test date, time and number.
In an embodiment of the present application, as shown in fig. 1, the test system further includes a display device 70, the display device 70 is in communication connection with the simulation master station 30, the display device 70 is configured to display the test result, so that a tester can conveniently check the test result, and the test system further includes a distribution box, and the distribution box supplies power to the shielding cabinet, the general cabinet, the simulation master station, and the display device.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
in the test system, the test object is installed in a darkroom of a shielding cabinet, the shielding cabinet collects real-time data of the test object, the universal cabinet sends interference signals and micropower wireless signals to the shielding cabinet and acquires the real-time data, and the simulation master station receives the real-time data and analyzes the real-time data to obtain a test result. The test system sends interference signals to the shielding cabinet through the universal cabinet, influences test objects in the shielding cabinet, simulates various communication environments and interferences of actual field environments, the simulation master station obtains real-time data of the test objects through the universal cabinet and analyzes the real-time data to obtain test results, test accuracy is improved, and the problem that the test system cannot simulate the field environments in the prior art is solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A test system, comprising:
the shielding cabinet is used for acquiring real-time data of a test object, and comprises a darkroom for mounting the test object, the test object at least comprises a micropower unit and a first electric energy meter terminal, and the first electric energy meter terminal is an electric energy meter terminal which communicates through a micropower wireless communication network;
the general cabinet is in communication connection with the shielding cabinet and is used for sending an interference signal to the shielding cabinet and acquiring the real-time data;
and the simulation master station is in communication connection with the universal cabinet and is used for receiving the real-time data and analyzing the real-time data to obtain a test result.
2. The system of claim 1, wherein there are a plurality of said dark rooms, and one of said dark rooms houses a plurality of said test objects.
3. The system of claim 1, wherein the test object further comprises a collector, a dual-mode unit, a four-meter centralized reading terminal, a PLC unit, and a second electric energy meter terminal, wherein the dual-mode unit is communicated through a micro-power wireless communication network or a broadband carrier, and the second electric energy meter terminal is communicated through a broadband carrier.
4. The system of claim 1, wherein the test system further comprises:
the combiner is in communication connection with the darkroom and is used for combining multiple paths of signals corresponding to the multiple kinds of real-time data into one path;
and the attenuator is respectively in communication connection with the combiner and the general cabinet and is used for attenuating the corresponding signals of the real-time data.
5. The system of claim 4, wherein the common cabinet comprises:
a signal source for generating an interference signal;
and the concentrator is in communication connection with the attenuator and is used for acquiring the real-time data.
6. The system of claim 5, wherein the common cabinet further comprises a chamber, the signal source and the concentrator being disposed in the chamber, the chamber being configured to isolate external radio waves.
7. The system of claim 5, wherein the test system further comprises:
and the coupler is respectively in communication connection with the darkroom and the signal source and is used for transmitting the interference signal to the darkroom.
8. The system of claim 7, wherein the common cabinet further comprises:
the first interface controller is respectively in communication connection with the signal source, the coupler, the attenuator and the concentrator and is used for controlling the connection and disconnection of a channel between the signal source and the coupler and a channel between the attenuator and the concentrator;
and the second interface controller is respectively in communication connection with the concentrator and the simulation master station and is used for controlling the on-off of a channel between the concentrator and the simulation master station.
9. The system of claim 1, wherein the analog master station comprises:
the configuration module is in communication connection with the universal cabinet and is used for editing the real-time data into a protocol file, and the protocol file is binary format data;
the analysis module is in communication connection with the configuration module and is used for analyzing the protocol file to obtain test data, and the test data is JSON format data;
the database module is used for storing evaluation data, and the evaluation data are data required by testing;
and the test module is in communication connection with the analysis module and the database module and is used for analyzing according to the test data and the evaluation data to obtain a test result.
10. The system of claim 1, wherein the test system further comprises:
and the display equipment is in communication connection with the simulation master station and is used for displaying the test result.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113825158A (en) * | 2021-08-31 | 2021-12-21 | 国网江苏省电力有限公司泰州供电分公司 | Power grid wireless communication debugging system |
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