CN110896548B - Portable power distribution automation communication signal detector and detection method thereof - Google Patents
Portable power distribution automation communication signal detector and detection method thereof Download PDFInfo
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Abstract
The invention discloses a portable power distribution automation communication signal detector and a detection method thereof, wherein the portable power distribution automation communication signal detector comprises a shell; the shell is internally provided with a serial port communication unit, a microprocessor and a power supply, and is also provided with keys and an LED display; the microprocessor is respectively connected with the serial port communication unit, the LED display, the keys and the power supply; a wireless communication module is arranged in the shell and used as a standard wireless module, and a tested wireless communication module connected with the power distribution terminal is inserted outside the shell through a serial communication unit; the antenna of the standard wireless module and the antenna of the tested wireless communication module are arranged at the same position during detection. The method mainly solves the technical problem of detecting the quality evaluation of the wireless network operation environment and evaluating the performance of the wireless communication module in the operation and maintenance process. The wireless communication system is small in size and easy to carry, is connected with the wireless communication module with the self-communication state detection function, can accurately and comprehensively evaluate the quality of the wireless network operation environment and the quality of the wireless communication module, and improves the operation and maintenance work efficiency.
Description
Technical Field
The invention belongs to the technical field of communication signal detection, and particularly relates to a portable power distribution automation communication signal detector and a detection method thereof.
Background
With the development of power distribution automation in recent years, the number of applications of power distribution terminals is increased, and power supply companies have higher requirements on various operation indexes and requirements on operation and maintenance of the power distribution terminals adopting wireless public network communication.
The wireless public network communication of the distribution automation utilizes the public network of operators (mobile, communication, telecommunication, and the like), a VPN virtual private network is built in the public network, and the communication of a distribution terminal and the communication and the internet of a common user share one network resource. From the running data of the power distribution network in recent years, about 0% -6% of terminals have long offline time, the online rate is lower than 95%, the influence on the overall online rate is large, and about 5% -10% of terminals have frequent offline problems. According to the probability, if 5000 wireless terminals are applied to a certain city, more than 100-300 communication anomalies are seriously affected, and analysis of reasons and elimination of defects are urgently needed. 500 terminals need to make a plan to conduct investigation and defect elimination.
The automation system relies on communication to upload terminal signals and send down the strategy of the master station, and good communication is a necessary premise for normal application of the automation function. The automatic terminal signal is affected by a field environment, a terminal running state, a geographic position, signal strength, a communication mode and other factors, so that an effective and convenient means is needed to detect the terminal signal, and an optimal communication mode is reasonably selected according to a detection result.
None of the prior art has a portable power distribution automation communication signal detector, which can be convenient for operation and maintenance personnel to detect.
Disclosure of Invention
The invention aims to provide a portable power distribution automation communication signal detector and a detection method thereof, so as to solve the technical problems.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a portable power distribution automation communication signal detector comprises a shell; the shell is internally provided with a serial port communication unit, a microprocessor and a power supply, and is also provided with keys and an LED display;
the microprocessor is respectively connected with the serial port communication unit, the LED display, the keys and the power supply;
a wireless communication module is arranged in the shell and used as a standard wireless module, and a tested wireless communication module connected with the power distribution terminal is inserted outside the shell through a serial communication unit; the antenna of the standard wireless module and the antenna of the tested wireless communication module are arranged at the same position during detection.
Further, the microprocessor receives wireless state quantity and analog quantity data from the standard wireless module and the tested wireless communication module through the RS232 communication port.
A portable power distribution automation communication signal detection method comprises the following steps:
1) And (3) processing wireless state information once:
the antenna of the standard wireless module and the tested wireless communication module send the wireless state quantity and the analog quantity to the microprocessor; the microprocessor simulation power distribution terminal respectively establishes a wireless state quantity mapping relation table and a telemetering mapping relation table according to the state quantity and the analog quantity, converts the state quantity of the wireless communication module into event records and statistics through the wireless state quantity mapping relation table, converts analog quantity input into terminal-to-last analog quantity and current day statistics through the telemetering mapping relation table, and displays the received analog quantity data through the LED display in real time;
2) And (3) carrying out secondary processing on wireless state information:
the microprocessor establishes a wireless state anomaly analysis table, determines the current wireless state according to the event record, and analyzes the corresponding anomaly reasons according to the wireless state to realize the rapid positioning of the wireless problem.
Further, the event record in the step 1) is a state quantity marked with a time, and the statistics is data obtained by accumulating the state quantity to be counted.
Furthermore, the step 1) further comprises an alarm process, and when the specific parameter of the analog quantity exceeds the alarm line index, the microprocessor reports an alarm.
Further, the terminal wireless state quantity mapping relation table is as follows:
the terminal telemetering mapping relation table is as follows:
further, the wireless state in the step 2) includes a wireless inquiry abnormal state, a SIM card abnormal state, a wireless communication module self-checking error state, a PPP dialing abnormal state, a wireless server driving closing state, a wireless application no-message state and a communication normal state, each state has a priority, a fault area is determined according to different abnormal events, and the current unique state is analyzed.
Further, the abnormal state is queried wirelessly: carrying out state data inquiry and call on the wireless communication module, if the inquiry response is received, successfully jumping to a default communication normal state, and if the data inquiry fails, jumping all other states to the state; priority level 1, the state is the root state after the device is powered on, all subsequent states are based on the state, and the priority level is highest;
abnormal state of SIM card: if the wireless communication module finds that the SIM of the wireless communication module is missing or abnormal, the wireless communication module sends the SIM abnormality to be 1, and the wireless communication module is transferred to an abnormal state of the SIM card, and if the state of the SIM card is normal, the wireless communication module returns to a normal communication state; priority level 2;
the wireless communication module self-checks the error state: if the self-check of the wireless communication module finds out the self-RAM error and FLASH error, the abnormity of the wireless communication module is 1, the wireless communication module is transferred to the self-check error state of the wireless communication module, and if the self-check of the wireless communication module is normal, the wireless communication module returns to the normal communication state; priority level 2;
PPP dial abnormal state: after the SIM is successfully detected, the operator network cannot be logged in when the SIM arrears, the PPP dialing abnormality is responded, the state is transferred to the PPP dialing abnormality, and if the PPP dialing is normal, the state is returned to the communication normal state; priority level 3;
wireless server driven off state: the heartbeat packet of the front-end processor of the distribution network main station is continuously lost for 5 times and enters, and the distribution network main station is transferred to a wireless server driving closing state; priority level 4;
wireless application no message state: the network distribution master station continuously enters a wireless application non-message state without application message interaction for 5 minutes, and returns to a normal communication state if a service data message exists; priority 5;
communication normal state: the wireless communication device enters the state without any abnormal state, and the wireless communication state is normal, and the priority level is 6.
Further, the method also comprises the following steps:
3) When the communication is normal, carrying out communication delay evaluation to obtain a communication delay score;
4) And judging whether the tested wireless communication module meets the standard or not according to the score of the standard wireless module.
Further, the communication delay score in the step 3) is the minimum value of the communication delay score of the wireless server and the communication delay score of the wireless communication module after scoring the communication delay score;
the wireless server and wireless communication module communication delay scores comprise a wireless signal delay average score and a wireless server network delay mean square error score, wherein the wireless signal delay average score accounts for 70% of the weight, and the wireless server network delay mean square error score accounts for 30% of the weight;
when the wireless signal delay is smaller than or equal to the minimum score average delay S1, the wireless signal delay average score is 100 points, when the wireless signal delay exceeds the maximum score average delay S2, the wireless signal delay average score is 0 point, and if the wireless signal delay is between the minimum score average delay S1 and the maximum score average delay S2, the wireless signal delay average score is scored proportionally;
when the wireless server network delay mean square error is smaller than or equal to the minimum score mean square error delay S3, the wireless server network delay mean square error score is 100 points, when the wireless server network delay mean square error exceeds the maximum score mean square error delay S4, the wireless server and network delay mean square error score is 0 point, and if the wireless server network delay mean square error is between the minimum score mean square error delay S3 and the maximum score mean square error delay S4, the wireless server network delay mean square error score is scored proportionally.
The invention has the following beneficial effects to the prior art:
wireless communication signal detection and evaluation directly determines the speed and cost of enterprise operation and maintenance management. The data of the on-site wireless environment is monitored, the wireless signal coverage blind area of the distribution network is found in time, the occurrence rate of wireless faults is reduced through the position optimization of the wireless amplifier, the risk that the distribution line breaks down and the master station is unknown is prevented, and the wireless network is operated at the comprehensive optimal degree. The invention can be used for rapidly positioning the on-site wireless fault point after the problem is found, ensuring the automatic safe and stable operation of the power distribution network, reducing the maintenance level of users, and certainly having high practical value and management benefit for the users.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of a portable power distribution automation communication signal detector according to the present invention;
FIG. 2 is a block diagram of a portable power distribution automation communication signal detector according to the present invention;
FIG. 3 is a flow chart of a portable power distribution automation communication signal detection method according to the present invention;
FIG. 4 is a state transition diagram;
fig. 5 is a communication delay evaluation scoring graph.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
The following detailed description is exemplary and is intended to provide further details of the invention. Unless defined otherwise, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
Referring to fig. 1 and 2, the invention provides a portable power distribution automation communication signal detector, which comprises a shell, a serial communication unit, a microprocessor and a power supply, wherein the serial communication unit, the microprocessor and the power supply are fixed in the shell, and keys and an LED display are also arranged on the shell;
the microprocessor is respectively connected with the serial port communication unit, the LED display and the power supply; the invention has small volume and easy portability, is connected with the wireless communication module with the self-communication state detection function, can accurately and comprehensively evaluate the quality of the wireless network operation environment and the quality of the wireless communication module, and improves the operation and maintenance working efficiency.
A wireless communication module is arranged in the shell and used as a standard wireless module, and a tested wireless communication module connected with the power distribution terminal can be inserted into the shell through the serial communication unit. The antenna of the standard wireless module and the antenna of the tested wireless communication module are arranged at the same position during detection so as to carry out comparison monitoring.
The microprocessor of the automatic power distribution communication signal detector receives the wireless state quantity and analog quantity data from the two wireless communication modules through a serial port communication unit (RS 232 communication port), and the detection process further comprises the following steps: an operation network communicated with the wireless communication module and a power distribution master station system connected with the wireless server.
The invention provides a portable power distribution automation communication signal detector communication evaluation method, which specifically comprises the following steps:
1) Processing wireless state information once; the antenna of the standard wireless module and the tested wireless communication module send the wireless state quantity and the analog quantity to the microprocessor; the microprocessor establishes a wireless state quantity mapping relation table and a telemetering mapping relation table, converts the state quantity of an antenna of a standard wireless module and a measured wireless communication module into event records and statistics according to the wireless state quantity mapping relation table, converts analog quantity input into terminal on-the-day analog quantity and on-the-day statistics according to the telemetering mapping relation table, and displays the received analog quantity data through an LED display in real time;
the microprocessor processes the original and periodic state values of the antenna of the standard wireless module and the detected wireless communication module once, and changes the state values of the antenna of the standard wireless module and the detected wireless communication module into meaningful terminal emergency records and statistics for reading, calling and checking by the LED display. The mapping relationship is shown in the following table:
table 1, terminal radio state quantity map table
Table 2, terminal telemetry mapping table
And displaying the received analog quantity data in real time. And reporting the alarm when the index of part of the analog quantity exceeds the alarm line.
2) And (3) carrying out secondary processing on wireless state information: the microprocessor establishes a wireless state anomaly analysis table, determines the current wireless state according to the event record in the step 1), and analyzes the corresponding analysis anomaly reasons according to the wireless state to realize the rapid positioning of the wireless problem;
the wireless states are scattered and disordered, the specific reason of the current wireless abnormality needs to be determined from disordered event records, and the main possibility is shown in table 3 by summarizing that the service data of the master station and the terminal cannot be communicated:
table 3, radio state abnormality specific cause table
The data transmitted by the wireless communication module may have various reasons (such as synchronization with CH1 abnormality and PPP dialing abnormality), and the microprocessor selects the most probable reason for reporting through screening. By carrying out secondary processing on the data information transmitted by the wireless communication module, determining a fault area with problems according to different abnormal events, analyzing the unique state of the current wireless communication module, and a state transition diagram is shown in fig. 4. As shown in table 3, the radio states include a radio inquiry abnormal state, a SIM card abnormal state, a radio communication module self-checking error state, a PPP dial abnormal state, a radio server drive off state, a radio application no message state and a communication normal state, each of which has its own priority (priority 1 is the highest priority), and the state transition condition is based on the responsive state data of the radio communication module, and if the corresponding data are simultaneously present, the highest priority state is the current state. The concrete explanation is as follows:
wireless inquiry of abnormal state: carrying out state data inquiry and call on the wireless communication module, if the inquiry response is received, successfully jumping to a default communication normal state, and if the data inquiry fails, jumping all other states to the state; priority level 1, the state is the root state after the device is powered on, and all subsequent states are based on the state, and the priority level is highest.
Abnormal state of SIM card: if the wireless communication module finds that the SIM of the wireless communication module is missing or abnormal, the wireless communication module sends the SIM abnormality to be 1, and the wireless communication module is transferred to an abnormal state of the SIM card, and if the state of the SIM card is normal, the wireless communication module returns to a normal communication state; priority level 2.
The wireless communication module self-checks the error state: if the wireless communication module self-tests to find out the abnormality such as the self-RAM error, the FLASH error and the like, the abnormality of the wireless communication module is 1, the wireless communication module self-tests to the error state, if the wireless communication module self-tests to be normal, the communication state is returned to; priority level 2.
PPP dial abnormal state: after the SIM is successfully detected, the operator network cannot be logged in due to the SIM arrears, the PPP dialing abnormality is responded, the state is transferred to the PPP dialing abnormality, and if the PPP dialing is normal, the state is returned to the communication normal state; priority level 3.
Wireless server driven off state: the heartbeat packet of the front-end processor of the distribution network main station is continuously lost for 5 times and enters, and the distribution network main station is transferred to a wireless server driving closing state; priority level 4.
Wireless application no message state: the network distribution master station continuously enters a wireless application non-message state without application message interaction for 5 minutes, and returns to a normal communication state if a service data message exists; priority level 5.
Communication normal state: the wireless communication device enters the state without any abnormal state, and the wireless communication state is normal, and the priority level is 6.
When a responsive event is encountered, a jump is made to another state. In the telemetering wireless state quantity, each state corresponds to a wireless state value, and the problems are rapidly positioned and displayed in the background and maintenance software.
3) And if the wireless state is not abnormal, evaluating the communication delay to obtain a communication delay score.
The health online assessment is scoring of the communication quality performance index under all normal conditions of the network. The score at the time of communication abnormality is 0. Under the condition of normal communication, the most direct response of the communication is a communication delay value, and the communication delay of the wireless server and the wireless communication module is scored. The communication delay scores include a wireless signal delay average score (reflecting signal average delay) and a wireless server network delay mean square error score (reflecting whether signal delay fluctuation amplitude is large or not and whether the signal is stable or not), wherein the wireless signal delay average score accounts for 70% of the weight, and the wireless server network delay mean square error score accounts for 30% of the weight. The wireless signal delay is smaller than or equal to the minimum score average delay S1 and is 100 points, the exceeding of the maximum score average delay S2 is 0 points, and if the wireless signal delay is between the minimum score average delay S1 and the maximum score average delay S2, the wireless signal delay average score is scored proportionally; and if the wireless server network delay mean square error is smaller than or equal to the minimum score mean square error delay S3 and is 100 points, and exceeds the maximum score mean square error delay S4 and is 0 points, the wireless server network delay mean square error is scored proportionally if the wireless server network delay mean square error is between the minimum score mean square error delay S3 and the maximum score mean square error delay S4. Because the wireless server and the wireless communication module are in a series connection relationship, the total score is the minimum value of the score of each moment. The distribution office uses the data as the data basis for network optimization.
The wireless delay has competition and environmental interference, and compared with the wired network, the wireless network has longer delay and more packet loss rate, and the network quality of the wireless network is necessary to be evaluated. The minimum score average delay S1 is generally in the range of hundreds of milliseconds to seconds, the wireless module is provided with a 2G module and a 3G module, and the GPRS network transmits data with the delay in the range of seconds. In most acquisition and control systems, this delay is within acceptable limits and does not affect use. In most of the time, the average overall delay of GPRS data communication is about 1-2 seconds; the transmission delay of the CDMA network is about 1-2 seconds; for 3G networks, the average delay is around 500 ms. In order to cover these several wireless public network modules, which are mainstream in the market, the preferred embodiment is 500ms; the maximum score average delay S2 is typically an average delay of several hundred milliseconds to several seconds, with 5000ms being preferred in this embodiment. The signal stabilizing range is between 20% and 40% of the range value of the actual measured signal. The minimum score mean square error delay S3 is preferably 200ms; the maximum score mean square error delay S4 is preferably 1000ms.
And determining the quality of the tested wireless communication module by comparing the score difference between the antenna of the standard wireless module and the tested wireless communication module. Because the tested wireless communication modules of different manufacturers and models also have different reactions to the signal intensity, the tested modules and the standard modules are arranged at the same position, and then the signal quality of the communication process of the power distribution terminal and the main station is simulated through the actual detector to score, and the quality of the modules of different manufacturers is identified.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (8)
1. A portable power distribution automation communication signal detection method is characterized by being based on a portable power distribution automation communication signal detector; the portable power distribution automation communication signal detector comprises a shell; the shell is internally provided with a serial port communication unit, a microprocessor and a power supply, and is also provided with keys and an LED display; the microprocessor is respectively connected with the serial port communication unit, the LED display, the keys and the power supply; a wireless communication module is arranged in the shell and used as a standard wireless module, and a tested wireless communication module connected with the power distribution terminal is inserted outside the shell through a serial communication unit; the antenna of the standard wireless module and the antenna of the tested wireless communication module are arranged at the same position during detection; the portable power distribution automation communication signal detection method comprises the following steps:
1) And (3) processing wireless state information once:
the antenna of the standard wireless module and the tested wireless communication module send the wireless state quantity and the analog quantity to the microprocessor; the microprocessor simulation power distribution terminal respectively establishes a wireless state quantity mapping relation table and a telemetering mapping relation table according to the state quantity and the analog quantity, converts the state quantity of the wireless communication module into event records and statistics through the wireless state quantity mapping relation table, converts analog quantity input into terminal-to-last analog quantity and current day statistics through the telemetering mapping relation table, and displays the received analog quantity data through the LED display in real time;
2) And (3) carrying out secondary processing on wireless state information:
the microprocessor establishes a wireless state anomaly analysis table, determines the current wireless state according to the event record, and analyzes the corresponding anomaly reasons according to the wireless state to realize the rapid positioning of the wireless problem.
2. The method for detecting portable power distribution automation communication signals according to claim 1, wherein the event record in the step 1) is a state quantity marked with a time, and the statistics are data obtained by accumulating the state quantity to be counted.
3. The method for detecting a portable power distribution automation communication signal according to claim 1, wherein the terminal wireless state quantity mapping relation table is:
the terminal telemetering mapping relation table is as follows:
4. the method according to claim 1, wherein the wireless state in the step 2) includes a wireless inquiry abnormal state, a SIM card abnormal state, a wireless communication module self-checking error state, a PPP dialing abnormal state, a wireless server driving off state, a wireless application no-message state and a communication normal state, each state has a respective priority, a fault area is determined according to different abnormal events, and a current unique state is analyzed.
5. The method for detecting a portable power distribution automation communication signal in accordance with claim 4, wherein the abnormal state is wirelessly queried: carrying out state data inquiry and call on the wireless communication module, if the inquiry response is received, successfully jumping to a default communication normal state, and if the data inquiry fails, jumping all other states to the state; priority level 1, the state is the root state after the device is powered on, all subsequent states are based on the state, and the priority level is highest;
abnormal state of SIM card: if the wireless communication module finds that the SIM of the wireless communication module is missing or abnormal, the wireless communication module sends the SIM abnormality to be 1, and the wireless communication module is transferred to an abnormal state of the SIM card, and if the state of the SIM card is normal, the wireless communication module returns to a normal communication state; priority level 2;
the wireless communication module self-checks the error state: if the self-check of the wireless communication module finds out the self-RAM error and FLASH error, the abnormity of the wireless communication module is 1, the wireless communication module is transferred to the self-check error state of the wireless communication module, and if the self-check of the wireless communication module is normal, the wireless communication module returns to the normal communication state; priority level 2;
PPP dial abnormal state: after the SIM is successfully detected, the operator network cannot be logged in when the SIM arrears, the PPP dialing abnormality is responded, the state is transferred to the PPP dialing abnormality, and if the PPP dialing is normal, the state is returned to the communication normal state; priority level 3;
wireless server driven off state: the heartbeat packet of the front-end processor of the distribution network main station is continuously lost for 5 times and enters, and the distribution network main station is transferred to a wireless server driving closing state; priority level 4;
wireless application no message state: the network distribution master station continuously enters a wireless application non-message state without application message interaction for 5 minutes, and returns to a normal communication state if a service data message exists; priority 5;
communication normal state: the wireless communication device enters the state without any abnormal state, and the wireless communication state is normal, and the priority level is 6.
6. The portable power distribution automation communication signal detection method of claim 1, further comprising the steps of:
3) When the communication is normal, carrying out communication delay evaluation to obtain a communication delay score;
4) And judging whether the tested wireless communication module meets the standard or not according to the score of the standard wireless module.
7. The method for detecting a communication signal of a portable power distribution automation system according to claim 6, wherein the communication delay score in the step 3) is a minimum value obtained after scoring the communication delay of the wireless server and the wireless communication module;
the wireless server and wireless communication module communication delay scores comprise a wireless signal delay average score and a wireless server network delay mean square error score, wherein the wireless signal delay average score accounts for 70% of the weight, and the wireless server network delay mean square error score accounts for 30% of the weight;
when the wireless signal delay is smaller than or equal to the minimum score average delay S1, the wireless signal delay average score is 100 points, when the wireless signal delay exceeds the maximum score average delay S2, the wireless signal delay average score is 0 point, and if the wireless signal delay is between the minimum score average delay S1 and the maximum score average delay S2, the wireless signal delay average score is scored proportionally;
when the wireless server network delay mean square error is smaller than or equal to the minimum score mean square error delay S3, the wireless server network delay mean square error score is 100 points, when the wireless server network delay mean square error exceeds the maximum score mean square error delay S4, the wireless server and network delay mean square error score is 0 point, and if the wireless server network delay mean square error is between the minimum score mean square error delay S3 and the maximum score mean square error delay S4, the wireless server network delay mean square error score is scored proportionally.
8. The method for detecting a portable power distribution automation communication signal according to claim 1, wherein the microprocessor receives the wireless state quantity and analog quantity data from the standard wireless module and the measured wireless communication module through the RS232 communication port.
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