CN108540172B - Handheld performance monitoring system and monitoring method for electricity consumption information acquisition system - Google Patents
Handheld performance monitoring system and monitoring method for electricity consumption information acquisition system Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B3/46—Monitoring; Testing
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- H—ELECTRICITY
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Abstract
The invention discloses a hand-held performance monitoring system and a monitoring method for a power consumption information acquisition system, wherein the monitoring system comprises: the device comprises a carrier sampling unit, a switch matrix unit, a receiver unit, a frequency spectrograph and an embedded computer unit, wherein the embedded computer unit is used for receiving and storing vectorized data output by the receiver unit, drawing an eye diagram and a constellation diagram according to the vectorized data, receiving and storing signals output by the frequency spectrograph, and drawing a frequency spectrogram according to the signals output by the frequency spectrograph. The invention also discloses a monitoring method of the handheld performance monitoring system for the electricity consumption information acquisition system. The invention can accurately position the fault reason on site, effectively and accurately realize the drawing of the frequency spectrogram, the eye diagram and the constellation diagram, and accurately realize the performance monitoring, the protocol consistency judgment and the time sequence identification of the communication channel; therefore, the communication fault of the acquisition terminal is conveniently and quickly judged on site in an auxiliary manner.
Description
Technical Field
The invention relates to the technical field of power consumption information monitoring, in particular to a handheld performance monitoring system and a monitoring method for a power consumption information acquisition system.
Background
The power consumption information acquisition system improves the informatization level of power consumption management, saves a large amount of labor force and improves the production efficiency. The electricity consumption information acquisition system mainly comprises a system main station, a public network base station, a concentrator, an acquisition device, an intelligent electric meter and the like. Due to the factors of long construction period, multiple technical standards, openness and time variability of a power grid, lack of an optimal communication technical scheme and the like, the existing power utilization information acquisition system has more communication schemes, namely a wired scheme and a wireless scheme; both dedicated channels and shared channels are available; both baseband and modulated; the long-wave band and the medium-short wave band exist, even if the communication modes are the same, the technical schemes adopted by various manufacturers are different, and various communication modes such as 485, narrow-band carrier, broadband carrier, micropower wireless, carrier/micropower wireless dual-mode, GPRS/CDMA, LTE and the like can be adopted.
The communication mode is an important basis for realizing the functions of the power utilization information acquisition system, and determines the working principle of the power utilization information acquisition system and the effectiveness and reliability of the system, so that the accurate judgment and the timely maintenance of communication faults are of great importance to the power utilization information acquisition system. However, when the existing acquisition terminal device has a communication failure in field operation, because the professional skill level of field maintenance personnel is limited and professional maintenance tools are lacked, it is usually difficult to determine the cause of the failure on the field, and the failure needs to be repaired after being dismantled, and a large amount of time and manpower are consumed. At present, an effective performance monitoring means capable of judging the communication fault of the acquisition terminal in an auxiliary manner on site is lacked in the prior art.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a handheld performance monitoring system and a monitoring method for an electricity consumption information acquisition system, which can accurately locate the fault reason on site, effectively and accurately realize the drawing of a frequency spectrum diagram, an eye diagram and a constellation diagram, and accurately realize the performance monitoring, protocol consistency judgment and time sequence identification of a communication channel; the method can be used for conveniently and quickly judging the communication fault of the acquisition terminal in an auxiliary manner on site.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a power consumption information collection system is with hand-held type performance monitoring system includes:
the carrier sampling unit is used for acquiring signals in a carrier communication frequency band on a power line to be detected;
the switch matrix unit is electrically connected with the carrier sampling unit, an external antenna is further connected to the switch matrix unit, and the switch matrix unit is used for performing alternative switching on the signal acquired by the carrier sampling unit and the signal acquired by the external antenna and outputting the signal to a frequency spectrograph;
the device comprises a receiver unit, a processing unit and a control unit, wherein the receiver unit is used for receiving external communication signals, analyzing and converting the external communication signals into vectorization data and transmitting the vectorization data to an embedded computer unit, and the external communication signals comprise broadband carrier signals and micropower signals; the vectorized data comprises eye diagram and constellation diagram drawing data;
the frequency spectrograph is used for receiving the output signal of the receiving switch matrix unit, processing the signal and transmitting the processed signal to the embedded computer unit;
and the embedded computer unit is used for receiving and storing the vectorized data output by the receiver unit, drawing an eye diagram and a constellation diagram according to the vectorized data, receiving and storing signals output by the frequency spectrograph, and drawing a frequency spectrogram according to the signals output by the frequency spectrograph.
The handheld performance monitoring system for the electricity consumption information acquisition system further comprises a modulation and demodulation module, the modulation and demodulation module is connected with the embedded computer unit through a bidirectional data interaction interface, the modulation and demodulation module is used for monitoring messages and data interaction in a channel of a broadband carrier signal or a micropower signal, and the embedded computer unit is further used for carrying out protocol consistency test on communication of the modulation and demodulation module.
And the switch matrix unit is provided with an SMA interface which is used for connecting an external antenna.
The external communication signals may also include one or more of narrowband carrier signals, GPRS/CDMA signals, and radio data transmission station signals.
The handheld performance monitoring system for the power consumption information acquisition system further comprises a power supply unit for supplying power to the embedded computer unit, wherein the power supply unit adopts a high-current direct-current power supply, and the high-current direct-current power supply directly gets power from the power line to be detected.
The carrier sampling unit and the switch matrix unit are connected through a pre-filtering unit.
A monitoring method of a handheld performance monitoring system for a power utilization information acquisition system comprises the following steps:
1) the switch matrix unit receives signals collected from an external antenna and signals collected by the carrier sampling unit from a carrier communication frequency band on the power line to be tested, and outputs the received two signals to the frequency spectrograph after alternative switching;
2) the frequency spectrograph processes the signal output by the switch matrix unit and outputs the processed signal to the embedded computer unit;
3) the receiver unit receives an external communication signal, analyzes and converts the external communication signal into vectorized data and transmits the vectorized data to the embedded computer unit; the external communication signal comprises a broadband carrier signal and a micro-power signal;
4) the embedded computer unit receives and stores the signal output by the frequency spectrograph, performs spectrogram drawing according to the signal output by the frequency spectrograph, and stores data in the spectrogram drawing process; and simultaneously, the embedded computer unit also receives and stores the vectorized data output by the receiver unit, draws an eye diagram and a constellation diagram according to the vectorized data, and stores the drawing process of the eye diagram and the constellation diagram.
And the embedded computer unit in the step 4) also plays back the drawing process of the frequency spectrogram, the eye diagram and the constellation diagram according to the stored drawing process data of the frequency spectrogram, the eye diagram and the constellation diagram.
The handheld performance monitoring system for the electricity consumption information acquisition system in the monitoring method further comprises a modulation and demodulation module connected with the embedded computer unit, and the embedded computer unit in the step 4) further performs protocol consistency test on communication of the modulation and demodulation module.
In the monitoring method, the external communication signal further comprises one or more of a narrow-band carrier signal, a GPRS/CDMA signal and a wireless data transmission station signal.
The invention has the following beneficial effects: the monitoring system can accurately position the fault reason on site, effectively and accurately draw a frequency spectrum graph, an eye graph and a constellation graph, and accurately monitor the performance of a communication channel, judge the protocol consistency and identify the sequence; particularly, communication faults in the aspect of carrier communication which are difficult to discriminate can be positioned, the communication faults of the acquisition terminal can be conveniently and quickly judged in an auxiliary manner on site, and the problem that the faults are difficult to accurately reproduce due to the change of electromagnetic environment factors after equipment is dismantled is solved; high-resolution display of low-dimensional monitoring data can be realized; the system has multiple interface functions, and can realize efficient sharing, ordered processing and compressed storage of monitoring data; compact structure, portable and operation, reduced the professional skill level requirement of field maintenance personnel.
Drawings
FIG. 1 is a block diagram of the structure of a handheld performance monitoring system of the present invention;
FIG. 2 is a circuit configuration diagram of a carrier sampling unit;
fig. 3 is a circuit configuration diagram of a pre-filter unit;
fig. 4 is a circuit configuration diagram of the power supply unit;
FIG. 5 is a schematic block diagram of an embedded computer unit;
FIG. 6 is a flow chart of a protocol conformance test;
fig. 7 is a flow chart for rendering a frequency spectrum, a constellation or an eye pattern;
fig. 8 is a playback flow chart of a drawing process of a spectrogram, a constellation or an eye pattern;
fig. 9 is a flow chart of master-slave node operation.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
As shown in fig. 1, a handheld performance monitoring system for a power consumption information acquisition system includes a carrier sampling unit, a switch matrix unit, a receiver unit, a spectrometer, an embedded computer unit, and a modem module. The carrier sampling unit is connected with the switch matrix unit through the pre-filter, the receiver unit performs data transmission with the embedded computer unit through the data interface, the embedded computer unit and the spectrometer adopt bidirectional data transmission, the embedded computer unit and the modulation and demodulation module adopt bidirectional data transmission, and for example, the embedded computer unit and the modulation and demodulation module realize bidirectional data transmission through a bidirectional data interaction interface.
The data interface and the data interaction interface both adopt USB ports, so that the transmission speed is high and the reliability is high.
And the carrier sampling unit is used for power frequency isolation and signal acquisition in a carrier communication frequency band on the power line to be detected.
As shown in fig. 2, the circuit of the carrier sampling unit mainly includes a sampling capacitor, a coupling transformer, a power frequency absorption diode, a surge absorption diode and a sampling resistor, and specifically, the sampling capacitor is an MPX capacitor of 0.1uF/450VAC for isolating the power frequency and passing through the radio frequency signal; the coupling transformer selects HR6008821422, which is used for isolating the system suspension from the power line, thus fully ensuring the personal safety of users; the power frequency inductive reactance of a primary coil of the isolation transformer is only about 0.3 ohm, and primary isolation is performed on the power frequency; in order to further reduce the influence of power frequency on subsequent circuits and signal measurement, a second-stage power frequency absorption inductor is added, and power frequency suppression reaches over 140dB through multi-stage suppression so as to effectively reduce power frequency voltage to uV magnitude; the P6KE12CA is a surge absorption diode used for eliminating burst strong radio frequency signals and protecting equipment safety; the signal sampling resistor has a resistance of 50 ohms to provide a standard interface impedance for the test system.
The carrier sampling unit can effectively isolate power frequency and sample signals of the power line to be tested by adopting the circuit.
And the switch matrix unit is electrically connected with the carrier sampling unit, and is also provided with an SMA interface which is connected with an external antenna. And the switch matrix unit is used for switching the signals collected by the carrier sampling unit and the signals collected by the external antenna alternately and then outputting the signals to the frequency spectrograph.
The switch matrix unit can guarantee isolation between two signals and shielding degree of a self channel when the signals collected by the carrier sampling unit and the signals collected by the external antenna are switched in an alternative mode, so that mutual interference between the two signals can be avoided, meanwhile, signal lossless transmission and impedance matching are guaranteed, and the problems of signal reflection, leakage and the like are avoided.
Specifically, factors such as a radio frequency signal frequency band and signal power to be measured need to be considered when the switch matrix unit selects the device, and preferably, the switch matrix unit can select a combination mode of a single-pole double-throw radio frequency coaxial switch to better realize connection between an input signal and test equipment.
The frequency range of the switch matrix unit is: direct current to 20 GHz; the switch is characterized in that the switch is a non-terminated single-pole double-throw switch, and is disconnected before being closed; the isolation is 110 dB-2.25 dB/GHz; the insertion loss is less than 0.2dB +0.025 dB/GHz; the interface adopts an SMA female head; the control voltage is a DC driving voltage of 4.5-32V.
Furthermore, a pre-filter unit is arranged between the carrier sampling unit and the switch matrix unit, and is mainly used for filtering out radio frequency signal components beyond 50K-30M, so that the influence of high-power out-of-band signals on the dynamic range of the receiving circuit is avoided. In addition, a filter circuit in the pre-filter unit is provided with a first-stage 30dB attenuator so that the power of the input signal meets the input power requirement of the power detection circuit.
As shown in fig. 3, the filter circuit of the pre-filter unit is a band-pass filter formed by combining a seven-order chebyshev low-pass filter and a seven-order chebyshev high-pass filter, and the chebyshev filter is selected mainly considering the steep transition band, which is beneficial to suppressing out-of-band interference signals. Signals enter from an L14 port, are subjected to seven-order low-pass filtering with the frequency of 35MHz and seven-order high-pass filtering with the frequency of 20KHz, and are subsequently sent to a sampling circuit for processing. The filter circuit can better meet the design requirements on parameters such as out-of-band rejection, in-band fluctuation, insertion loss and the like.
The system comprises a receiver unit, a data processing unit and an embedded computer unit, wherein the receiver unit is used for receiving external communication signals, analyzing and converting the external communication signals into vectorized data and transmitting the vectorized data to the embedded computer unit, and the vectorized data comprises eye diagram and constellation diagram drawing data; the external communication signal comprises a broadband carrier signal, a micro-power signal, a narrow-band carrier signal, a GPRS/CDMA signal and a wireless data transmission radio signal, wherein the wireless data transmission radio signal can adopt a 230M wireless data transmission radio signal.
It can be understood that the receiver unit includes a broadband carrier receiver, a micropower receiver, a narrowband carrier receiver, a GPRS/CDMA receiver, and a wireless data transmission station receiver, and is configured to receive the corresponding communication signal, where each of the receivers may monitor its own channel, simultaneously analyze a channel packet, and send analyzed packet data (including information such as an eye diagram and a constellation diagram of vectorized data) to the embedded computer unit through the data interface unit, and the embedded computer unit processes, displays, and outputs the received packet data, thereby implementing high-resolution display of low-dimensional monitoring data, and implementing analysis and reconstruction of the eye diagram/constellation diagram of vectorized data.
The modulation and demodulation module comprises a modulation and demodulation module with two modes of broadband carrier and micropower and is used for monitoring messages and data interaction in a channel of a broadband carrier signal or a micropower signal, wherein the data interaction means that the modulation and demodulation module demodulates and converts the messages in the channel of the broadband carrier signal or the micropower signal into application layer messages and transmits the application layer messages to the embedded computer unit, and the modulation and demodulation module directly receives the application layer messages directly sent by the embedded computer unit, modulates the application layer messages and sends the application layer messages into the channel of the broadband carrier signal or the micropower signal; the embedded computer unit controls the modulation and demodulation module to carry out the monitoring process, and the monitoring process can finally realize the channel performance monitoring and the equipment performance monitoring and can also realize the protocol consistency judgment and the time sequence identification.
The embedded computer unit can carry out protocol consistency test on the communication of the modulation and demodulation module through the message monitored by the modulation and demodulation module and the condition (data interaction) of sending and receiving the message by the modulation and demodulation module, namely, verify whether the communication of the modulation and demodulation module meets the requirement of a communication protocol, and detect whether the modulation and demodulation module meets the protocol consistency specification according to a DL/T645-2007 protocol and a Q/GDW1376.2-2013 protocol during the test.
The frequency spectrograph is used for receiving the output signal of the switch matrix unit under the control of the embedded computer unit, processing the signal and transmitting the processed signal to the embedded computer unit.
The embedded computer unit is used for receiving and storing the vectorized data output by the receiver unit, drawing and displaying an eye diagram and a constellation diagram according to the vectorized data, receiving and storing signals output by the frequency spectrograph, and drawing and displaying a frequency spectrogram according to the signals output by the frequency spectrograph; the device is also used for storing the drawing process data of the frequency spectrum graph, the eye graph and the constellation graph; the frequency spectrum graph, the eye graph and the constellation graph drawing process is played back according to the stored frequency spectrum graph, eye graph and constellation graph drawing process data;
the embedded computer unit stores the frequency spectrum, eye pattern and constellation diagram data on site and plays back images according to the drawing process data subsequently, so that accurate recording and playback of site conditions are facilitated, the site conditions can be truly reproduced even after technicians leave the site, and accurate judgment of faults is realized.
As shown in fig. 5, the embedded computer unit selects an ARM series chip of the ST company as a main processor, the main processor has few peripheral circuits, a frequency multiplier circuit is integrated inside, the main frequency can reach more than 80M, and an external input clock is 8M, so that the adverse effect of a system clock on a test system can be reduced while the processing speed is increased, and the difficulty in system development is reduced. All control issuing and uploading of a main function control circuit of the embedded computer unit are completed through the USB port, and reliability and high speed are achieved. The embedded computer unit comprises a large number of data transmission ports, and all the ports are isolated through high-speed optical couplers so as to ensure the reliability of data transmission.
The handheld performance monitoring system also comprises a power supply unit for supplying power to the embedded computer unit, wherein the power supply unit adopts a high-current direct-current power supply which directly gets power from a power line to be tested;
the power supply unit adopts a large-current direct-current power supply and mainly has the main function of providing stable power supply capacity for a large number of precision equipment and circuits in the handheld performance monitoring system, and because the power supply is from a power line to be detected, the power supply circuit of the power supply unit needs to be isolated, a scheme of a linear unit can be adopted, as shown in figure 4, a high-power low-power transformer is adopted at the front stage of the power supply circuit, and a mode of a linear voltage stabilizer and a filter circuit is adopted at the rear stage, so that the high current is ensured while the power supply is not interfered by high-frequency components. Preferably, the heat dissipation part structure of the linear voltage stabilizer is integrated with the heat dissipation air duct of the device, so that the heat dissipation efficiency is improved better, and the stable power supply of the power supply unit is ensured.
A monitoring method of a handheld performance monitoring system for a power utilization information acquisition system comprises the following steps:
1) the switch matrix unit receives signals collected by an external antenna at the SMA interface and signals collected by the carrier sampling unit from a carrier communication frequency band on the power line to be tested, and outputs the received two signals to the frequency spectrograph after alternative switching;
2) the frequency spectrograph processes the signal output by the switch matrix unit and outputs the processed signal to the embedded computer unit;
3) the receiver unit receives an external communication signal, analyzes and converts the external communication signal into vectorized data and transmits the vectorized data to the embedded computer unit;
the external communication signals comprise broadband carrier signals, micro-power signals, narrowband carrier signals, GPRS/CDMA signals and wireless data transmission station signals. The modulation and demodulation unit is used for modulating and demodulating the broadband carrier signal and the micro-power signal.
4) The embedded computer unit receives and stores the signal output by the frequency spectrograph, performs spectrogram drawing and displaying according to the signal output by the frequency spectrograph, and stores data in the spectrogram drawing process; and simultaneously, the embedded computer unit also receives and stores the vectorized data output by the receiver unit, draws and displays the eye diagram and the constellation diagram according to the vectorized data, and stores the drawing process of the eye diagram and the constellation diagram.
Finally, the technician can analyze whether the communication signal is in the fault state according to the frequency spectrum diagram, the eye diagram and the constellation diagram, or directly analyze whether the communication signal is in the fault state according to the frequency spectrum diagram, the eye diagram and the constellation diagram by the embedded computer unit.
And the embedded computer unit in the step 4) plays back the drawing process of the frequency spectrogram, the eye diagram and the constellation diagram according to the stored drawing process data of the frequency spectrogram, the eye diagram and the constellation diagram.
The step 3) can also be carried out before the step 1).
The implementation flow of the rendering of the frequency spectrum diagram, the constellation diagram and the eye diagram is shown in fig. 7.
The embedded computer unit can control the frequency spectrum instrument to set the frequency band, the bandwidth and the like of a signal to be received, control the frequency spectrum instrument to output data through an instruction and display the data; the maximum value of each frequency point under the same frequency band can be recorded and displayed, so that signals can be displayed more intuitively.
The embedded computer unit plays back the drawing process of the frequency spectrogram, the eye diagram and the constellation diagram: the data storage is carried out on the frequency spectrogram, the constellation diagram and the eye diagram, and the data can be stored in a designated folder according to the date when the image is drawn. If data playback is needed, the stored image can be played back at a certain speed only by reading the stored data, regenerating the image, and clicking to start playback, and the specific playback flow is shown in fig. 8.
The embedded computer unit in the step 1) also performs protocol consistency test on the communication of the modulation and demodulation module.
The protocol consistency test is mainly used for verifying whether the communication of the modulation and demodulation module meets the requirement of a communication protocol, namely, whether the communication data interaction process of the modulation and demodulation module meets the requirement of the communication protocol is judged according to the condition that the modulation and demodulation module sends and receives messages. The communication specifications are about DL/T645-2007 specification and Q/GDW1376.2-2013 specification. The modem module may be a master module or a slave module, and the master module may be inserted as an auxiliary device when the slave module is tested, and the slave module may be inserted as an auxiliary device when the master module is tested. And when the protocol consistency test is carried out, the identification process, the file synchronization, the meter reading test and the detection of whether the module supports or not are carried out on the master module and the slave module. The embedded computer unit conducts operations such as power-on and power-off and resetting on the master module and the slave module through the communication port, conducts communication with the master module and the slave module through the concentrator communication port and the single-phase meter communication port, and detects whether the master module and the slave module meet the protocol consistency specification according to a DL/T645-2007 protocol and a Q/GDW1376.2-2013 protocol.
As shown in fig. 6, the protocol conformance test includes the following specific steps: inserting a group of master-slave modules into an external modulation interface of an embedded computer unit, and setting test parameters of the master-slave modules, such as communication parameters (baud rate, check bits and the like) of communication channels of the master-slave modules, types of the master-slave modules, addresses of the master-slave modules and the like; then clicking to start testing, the embedded computer unit sends a command to test protocol consistency according to the set testing parameters, and the testing result is displayed for the user to refer and analyze.
The embedded computer unit can also perform master-slave node operation on the modulation and demodulation module, namely, the master-slave node operation is performed on the master-slave module. The operation of the master node and the slave node is mainly to set the working state of the module, such as completing the power-on, reset, address response and the like of the module.
The master-slave node operation comprises two modes of comprehensive meter reading and instruction meter reading. The comprehensive meter reading is a cyclic meter reading mode for similar protocol consistency of the master module and the slave module; the instruction meter reading means that a specific instruction is sent to the master module.
The instruction meter reading needs to be initialized, namely, the module is powered on and reset, a signal is switched to a power line, then a serial port is opened, and an instruction is sent to the main node.
The embedded computer unit also has a virtual table function, and receives the instruction sent by the slave node after the virtual table is started and automatically responds. The embedded computer unit can also carry out automatic meter reading, and is a meter reading mode for automatically sending instructions to the main node according to the input time interval.
As shown in fig. 9, the specific process of the embedded computer unit performing the master-slave node operation on the master-slave module is as follows: firstly, an embedded computer unit configures communication channel parameters of a master module and a slave module, then whether comprehensive meter reading is carried out is judged, if the judgment result is yes, the comprehensive meter reading is started, and the meter reading result is analyzed; if the judgment result is negative, whether automatic meter reading is carried out is judged, if the judgment result is negative, a serial port is opened, an instruction is sent to the main node to start instruction meter reading, the meter reading result is analyzed, if the judgment result is positive, a meter reading time interval is input, an instruction is automatically sent to the main node according to the input time interval to start meter reading, and the meter reading result is analyzed.
Accurate drawing and playback of frequency spectrogram, eye diagram and constellation diagram, performance monitoring of communication channel, protocol consistency judgment, time sequence identification and the like in the process provide a basis for technicians to accurately locate fault reasons on site, so that the technicians can accurately locate the fault reasons according to the operation;
the handheld performance monitoring system can accurately position the fault reason on site, effectively and accurately draw a frequency spectrum graph, an eye graph and a constellation graph, and accurately monitor the performance of a communication channel, judge protocol consistency and identify the sequence; particularly, communication faults in the aspect of carrier communication which are difficult to discriminate can be positioned, the communication faults of the acquisition terminal can be conveniently and quickly judged in an auxiliary manner on site, and the problem that the faults are difficult to accurately reproduce due to the change of electromagnetic environment factors after equipment is dismantled is solved; the invention can also realize the high-resolution display of the low-dimensional monitoring data; the system has multiple interface functions, and can realize the efficient sharing of monitoring data; the sequential processing of the monitoring data and the compressed storage of the monitoring data can be realized; ensuring low-amplitude radiation of the power supply unit; compact structure, portable and operation, reduced the professional skill level requirement of field maintenance personnel.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The utility model provides a power consumption information acquisition system is with hand-held type performance monitoring system which characterized by includes:
the carrier sampling unit is used for acquiring signals in a carrier communication frequency band on a power line to be detected;
the switch matrix unit is electrically connected with the carrier sampling unit, an external antenna is further connected to the switch matrix unit, and the switch matrix unit is used for performing alternative switching on the signal acquired by the carrier sampling unit and the signal acquired by the external antenna and outputting the signal to a frequency spectrograph;
the device comprises a receiver unit, a processing unit and a control unit, wherein the receiver unit is used for receiving external communication signals, analyzing and converting the external communication signals into vectorization data and transmitting the vectorization data to an embedded computer unit, and the external communication signals comprise broadband carrier signals and micropower signals; the vectorized data comprises eye diagram and constellation diagram drawing data;
the frequency spectrograph is used for receiving the output signal of the switch matrix unit, processing the signal and transmitting the processed signal to the embedded computer unit;
and the embedded computer unit is used for receiving and storing the vectorized data output by the receiver unit, drawing an eye diagram and a constellation diagram according to the vectorized data, receiving and storing signals output by the frequency spectrograph, and drawing a frequency spectrogram according to the signals output by the frequency spectrograph.
2. The system according to claim 1, further comprising a modem module, wherein the modem module is connected to the embedded computer unit via a bidirectional data interaction interface, the modem module is configured to monitor messages and data interactions in a channel of a broadband carrier signal or a micropower signal, and the embedded computer unit is further configured to perform a protocol conformance test on communications of the modem module.
3. The system of claim 1, wherein the switch matrix unit is provided with an SMA interface, and the SMA interface is used for connecting an external antenna.
4. The system of claim 1, wherein the external communication signal further comprises one or more of a narrowband carrier signal, a GPRS/CDMA signal, and a radio signal.
5. The system according to claim 1, further comprising a power supply unit for supplying power to the embedded computer unit, wherein the power supply unit employs a high-current dc power supply, and the high-current dc power supply directly obtains power from the power line to be tested.
6. The system according to claim 1, wherein the carrier sampling unit and the switch matrix unit are connected via a pre-filter unit.
7. A monitoring method of a handheld performance monitoring system for a power utilization information acquisition system is characterized by comprising the following steps:
1) the switch matrix unit receives signals collected from an external antenna and signals collected by the carrier sampling unit from a carrier communication frequency band on the power line to be tested, and outputs the received two signals to the frequency spectrograph after alternative switching;
2) the frequency spectrograph processes the signal output by the switch matrix unit and outputs the processed signal to the embedded computer unit;
3) the receiver unit receives an external communication signal, analyzes and converts the external communication signal into vectorized data and transmits the vectorized data to the embedded computer unit; the external communication signal comprises a broadband carrier signal and a micro-power signal;
4) the embedded computer unit receives and stores the signal output by the frequency spectrograph, performs spectrogram drawing according to the signal output by the frequency spectrograph, and stores data in the spectrogram drawing process; and simultaneously, the embedded computer unit also receives and stores the vectorized data output by the receiver unit, draws an eye diagram and a constellation diagram according to the vectorized data, and stores the drawing process of the eye diagram and the constellation diagram.
8. The monitoring method of the handheld performance monitoring system for the electricity information collection system according to claim 7, wherein the embedded computer unit in step 4) further plays back the rendering process of the frequency spectrum map, the eye map and the constellation map according to the stored rendering process data of the frequency spectrum map, the eye map and the constellation map.
9. The monitoring method of the handheld performance monitoring system for the electricity consumption information collection system according to claim 7, wherein the handheld performance monitoring system for the electricity consumption information collection system further comprises a modem module connected to the embedded computer unit, and the embedded computer unit in step 4) further performs a protocol consistency test on communication of the modem module.
10. The method as claimed in claim 7, wherein the external communication signal further comprises one or more of a narrowband carrier signal, a GPRS/CDMA signal and a wireless data transmission radio signal.
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| CN201810196092.3A CN108540172B (en) | 2018-03-09 | 2018-03-09 | Handheld performance monitoring system and monitoring method for electricity consumption information acquisition system |
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| CN201810196092.3A CN108540172B (en) | 2018-03-09 | 2018-03-09 | Handheld performance monitoring system and monitoring method for electricity consumption information acquisition system |
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| CN108540172B true CN108540172B (en) | 2021-09-17 |
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