Communication fault monitoring and passive meter reading system and method based on electric meter communication module

Abstract

The invention relates to a communication fault monitoring and passive meter reading system and method based on an electric meter communication module. The method comprises the following steps: step 1, inserting a pin header at an interface of an intelligent electric meter and a communication module, and leading out weak current terminals of the intelligent electric meter and the communication module to an adapter plate; 2, connecting the isolation boosting device 1 to the adapter plate, and supplying power by using an isolation power supply; step 3, switching communication signals RXD and TXD led out from a carrier line communication port to a voltage boosting chip; 4, connecting the boosted communication port to an HPLC carrier communication port and a TTL communication port in parallel; step 5, supplying nominal voltage to the intelligent electric meter, enabling the simulation master station to communicate with the intelligent electric meter, monitoring communication data by a TTL module through a common serial port, and recording the data to a memory; and step 6, performing continuous communication on the carrier module and the TTL module through the communication upper computer, observing a communication result, and performing judgment and data analysis.

Description

Technical Field

[0001] The present invention relates to the technical field of metering equipment communication detection, and more specifically to a communication fault monitoring and passive meter reading system and method based on an electric meter communication module. Background Art

[0002] With the promotion of dual-mode communication technology for smart meters and the increase in the types of communication modules, smart meters have higher and higher demands for the reliability of module communication. Research and development of module communication technology with high reliability and stability has become one of the hot spots in the current research and development of smart meters. However, in actual applications, existing module communication technology often encounters communication instability, interruption and other fault problems, which will affect the real-time reporting of power outages, voltage and current collection and monitoring, and communication module ID management of the meter.

[0003] Most of the current communication fault analysis methods only analyze the product unilaterally, without considering the diagnosis and prediction of module communication faults. For the communication problems between the module and the metering equipment, only performance analysis was performed, while the consideration of its fault analysis and location, as well as the analysis of its stability, were ignored. This makes it impossible to quickly determine the location of the fault, and cross-departmental communication is required to determine the cause of the problem. In the process of solving the problem, the time cost and manpower cost of cross-departmental communication will increase, so that the established test schedule cannot be completed on time, and the overall project schedule may be affected, and even the project may fail, causing irreversible financial losses to the company. In addition, there are no corresponding measurement indicators for the test or analysis results of module communication, and the communication stability and reliability of module communication cannot be guaranteed, which may lead to quality problems in actual applications.

[0004] With the development of science and technology, electric meters are becoming more and more intelligent and complex. Most electric meters are no longer simple metering devices, but multifunctional static instruments that integrate metering, display, communication and other functions. Most of these instruments use 4G / HPLC as the main communication method. In the application process, module communication is prone to design deficiencies, which leads to serious impact from environmental factors, resulting in communication problems such as abnormal real-time reporting of electric meter power-off, interruption of voltage and current acquisition and monitoring, and failure of remote time calibration.

[0005] When testing the communication of smart meter modules, most existing technologies only consider the module itself or the meter itself, and lack research on communication failures that may occur after the meter is connected to the module. For technical research on analyzing module communication failures, the main test method is to send messages to the communication module, while ignoring the module interface communication failures that may occur in actual applications. Therefore, it can only eliminate the problems existing in the module test under theoretical conditions, and cannot accurately locate the actual communication failures. Technical research involving the analysis of module communication port failures also fails to take into account problems such as multi-channel communication failures that may occur during actual applications.

[0006] In view of the actual situation, existing studies have not fully considered the communication failures that may occur during the communication process, and it is difficult to accurately locate whether the communication failure is caused by a module or meter failure.

[0007] Therefore, the present invention focuses on solving the following problems:

[0008] 1. Comprehensively consider the communication failures after the electric energy meter is connected to the module, analyze the failures generated during the communication process, locate the causes of the problems, and propose a reliability calculation method for the module communication reliability to quantify the product reliability; 2. For the communication failures that may occur after the electric energy meter is connected to the module, in order to prevent the problem of data loss caused by external factors during the communication process, the electric energy meter and module data are monitored in real time through a shared serial port to verify whether the communication failure is caused by the electric energy meter or the module, and the data is backed up to realize passive meter reading. Summary of the invention

[0009] In combination with the actual situation, the present invention takes into account the fault diagnosis and prediction of module communication, and proposes a communication fault monitoring and passive meter reading system and method based on the meter communication module in order to timely eliminate hidden dangers and avoid unnecessary losses during the production and research and development process. This method can quickly determine the object of the module communication fault, making up for the module communication fault judgment problem that has not been considered in the prior art. The overall operation is simple and easy, which can save time and cost. At the same time, the test results are combined with the index analysis to ensure the high research and development efficiency and reliability of the product.

[0010] To solve the above problems, the technical solution adopted by the present invention is:

[0011] A communication fault monitoring and passive meter reading method based on an electric meter communication module, the method is based on the communication between an HPLC carrier communication module and a TTL module;

[0012] The method comprises the following steps:

[0013] Step 1: insert a pin header into the interface of the smart meter and the communication module, and lead the weak current terminals of the smart meter and the communication module to the adapter board;

[0014] Step 2, connecting the isolation boost device 1 to the adapter board and supplying power with an isolated power supply;

[0015] Step 3, transferring the communication signals RXD and TXD derived from the carrier line communication port to the voltage boosting chip;

[0016] Step 4, connecting the boosted communication port in parallel to the HPLC carrier communication port and the TTL communication port;

[0017] Step 5, supplying nominal voltage to the smart meter, simulating the master station to communicate with the smart meter, the TTL module monitors the communication data of the communication module through the shared serial port, and records the data into the memory;

[0018] Step 6: Continuously communicate with the communication module and the TTL module through the communication host computer, observe the communication results, and make judgments and data stability analysis.

[0019] When the communication module fails to communicate, after finishing step 6, proceed to step 7 to determine the cause of the communication failure.

[0020] In step 7, perform the following steps:

[0021] Step 7.1, communicate simultaneously with the electric energy meter carrier module communication 1 and TTL communication, record the communication results, and proceed to step 7.2;

[0022] Step 7.2: If simultaneous communication is possible, proceed to step 7.3; if simultaneous communication is not possible, proceed to step 7.4;

[0023] Step 7.3: If simultaneous communication is possible, the communication stability is judged, specifically, the judgment formula of the stability calculation method in step 7.3.1 is used to judge whether the communication reliability is qualified;

[0024] In step 7.3, perform the following steps;

[0025] Step 7.3.1, first, define the total number of TTL communications as T1, and the number of successful communications as N1; define the total number of communications of communication module 1 as T2, and the number of successful communications as N2;

[0026] Then, the TTL communication success rate is σ1=N1 / T1╳100%, and the communication success rate of communication module 1 is σ2=N2 / T2╳100%;

[0027] Among them, the judgment condition of the communication success rate of σ1 and σ2 is whether it is greater than or equal to 99%, and the carrier line communication reliability P = σ1╳σ2 is defined, and the judgment condition is whether it is equal to 100%;

[0028] If the final test result is P=100%, then go to step 11, add the communication module 2 for testing, and so on. If any item of the communication module 2 required is not satisfied, then go to step 10.

[0029] Step 8, test whether communication is possible through the TTL module port alone through the communication host computer;

[0030] If the communication is normal, the communication reliability of the meter is judged. If the communication reliability is qualified, go to step 9; if the communication reliability is unqualified or communication is impossible, the TTL communication in the meter is judged as a communication failure, which is a problem with the carrier line of the meter, and go to step 10.

[0031] Step 9, first, through the communication host computer to return data, determine whether the TTL communication module related to the carrier route is communicating normally. If it can communicate normally, calculate the communication success rate σ1 of the TTL communication module, and determine whether the TTL communication module is required. If the communication success rate does not meet the standard, it is determined that the carrier route communication is unreliable, and go to step 11 for rectification. If the communication success rate meets the standard, it can be determined that the TTL communication module communication is qualified, and go to step 10.

[0032] Step 10: After determining the part to which the problem belongs, make corresponding corrections to the fault. After the corrections are completed, go to step 7 and retest;

[0033] The data returned by the host computer 1 is used to determine whether the communication has failed, that is, whether the carrier module can communicate normally. If it can communicate normally, its communication success rate σ2 is calculated and it is determined whether it meets the requirements. If the communication success rate does not meet the standard, it is determined that the carrier route communication is unreliable, and step 9 is entered for rectification. If the communication success rate meets the standard, it is determined that the communication is qualified, and step 10 is entered.

[0034] Step 11: After the test is passed, the test process is retested again. If the communication is normal and the communication reliability P=100%, and there are no remaining issues, the rectification is successful.

[0035] A communication fault monitoring and passive meter reading system based on an electric meter communication module, the system comprises an isolation boosting device electrically connected to an intelligent electric meter; the isolation boosting device is electrically connected to a communication host computer via a communication module; the communication host computer is electrically connected to a memory for executing the above method.

[0036] The isolation booster device is equipped with an adapter plate;

[0037] The communication host computer serves as a simulated master station;

[0038] The memory includes a memory 1 and a memory 2;

[0039] The communication host computers include host computer 1 and host computer 2;

[0040] The communication module includes communication module 1 and communication module 2;

[0041] The smart meter is electrically connected to the communication module 1 and the communication module 2 through the TXD channel and the RXD channel respectively;

[0042] The communication module 1 includes a carrier module; the communication module 2 includes a TTL communication module;

[0043] The RXD port of the smart meter is connected to the communication module 1, the carrier module, the host computer 1, and the storage 1 through the corresponding isolation booster device;

[0044] The TXD port of the smart meter is connected to the communication module 2, the TTL communication module, the host computer 2, and the storage 2 through the corresponding isolation booster device;

[0045] The communication module interface of the smart meter uses a pin connection;

[0046] The communication signal is led out through the isolation booster device and connected to the TTL communication module and the carrier communication module. Finally, the reading frequency is set on the host computer software of the corresponding communication host computer, and the data is sent sequentially. The TTL communication and the carrier communication are read continuously, and the communication time period is set; if both the TTL communication and the carrier communication can communicate, the communication result is calculated and judged within the set communication time period;

[0047] If the calculated communication reliability P meets the requirements, a retest is performed. If the test is qualified, it means that the communication line is reliable. If the calculated communication reliability P does not meet the requirements or communication is impossible, the cause and rectification are determined based on the TTL communication success rate σ1 and the carrier communication success rate σ2. After the rectification is completed, the test is performed again. If the test is qualified, the test is repeated.

[0048] The present invention aims to solve the problem that the judgment of the cause of module communication failure in the prior art is not comprehensive enough. By reading the data of the carrier module and other modules at the same time, and judging the reliability of the module communication according to the calculation method of the communication reliability, the data support is given intuitively and concisely. In addition, the present invention proposes a communication signal testing method based on a passive meter reading method, which can quickly locate the object causing the communication failure, improve the research and development efficiency and product reliability. At the same time, the present invention supports module replacement and parallelization, can remotely view the monitoring data through the wireless module, and remotely monitor the communication information in real time on the client, which is convenient for the staff to troubleshoot the problem on site. The operation is simple and the test efficiency is high. It can reduce the communication cost, labor cost and time cost with the user, and combine the test results with the index analysis to provide intuitive and accurate results for the detection personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a system structure block diagram of the present invention.

[0050] Figure 2 It is an application logic block diagram of the present invention.

[0051] Figure 3 It is a flow chart of an application example of the present invention.

[0052] Figure 4 It is a diagram illustrating the calculation of communication stability of an application example of the present invention.

[0053] Figure 5 It is a circuit diagram of the carrier route of the present invention.

[0054] Figure 6 It is a diagram illustrating the calculation of communication stability of an application example of the present invention. DETAILED DESCRIPTION

[0055] like Figure 1-6 , the scheme of the embodiment of the present invention is as follows: the meter reading device includes a transfer board; a memory, a communication host computer and / or a communication module are arranged on the transfer board; the communication module includes a communication module 1 and a communication module 2;

[0056] like Figure 1 , the smart meter is electrically connected to the communication module 1 and the communication module 2 through the TXD channel and the RXD channel respectively; the communication module includes the communication module 1 and the communication module 2;

[0057] Communication module 2, data exchange between the smart meter and the corresponding communication host computer;

[0058] Communication host computer is electrically connected to the memory;

[0059] An isolation boost device is electrically connected between the smart meter and the communication module 2;

[0060] The smart meter is electrically connected to an analog master station;

[0061] The isolation boost device may adopt an existing isolation boost module, which is equipped with an isolation power supply and a voltage boost chip electrically connected to the isolation power supply, such as SP401A;

[0062] The memory includes a memory 1 and a memory 2;

[0063] The communication host computers include host computer 1 and host computer 2;

[0064] The communication module 1 includes a carrier module;

[0065] The communication module 2 includes a TTL communication module;

[0066] The RXD port of the smart meter is connected to the communication module 1, the carrier module, the host computer 1, and the storage 1 through the corresponding isolation booster device;

[0067] The TXD port of the smart meter is connected to the communication module 2, the TTL communication module, the host computer 2, and the storage 2 through the corresponding isolation booster device;

[0068] The communication module interface of the smart meter adopts pin connection. The communication signal is led out through the isolation booster device and connected to the TTL communication module and the carrier communication module. Finally, the reading frequency is set to 1s on the host computer software, and data is sent sequentially. The two communication methods are read continuously. The communication time is set to 5 minutes. If both communication methods can communicate, the communication results within this period are calculated. The communication reliability calculation is shown in the following figure. Figure 4 As shown, if the calculated communication reliability P meets the requirements, a retest is performed. If the test is passed, it means that the communication line is reliable. If the calculated communication reliability P does not meet the requirements, the specific cause is determined based on the TTL communication success rate σ1 and the carrier communication success rate σ2, and the relevant R&D personnel are asked to make corrections. If communication is not possible, the above method is used to determine the part to which the communication problem belongs and the part is handed over to the relevant R&D personnel for correction. After the correction is completed, the test is performed again. The logical judgment is as follows: Figure 2 If the test is qualified, a retest is performed in the same way, and the test results are also judged as above.

[0069] Considering the data frame superposition problem that may occur in serial communication, in the specific operation, the tester should try not to send data frames to two host computers at the same time, and the frequency of reading data should not be less than 500ms. The above operation can be easily realized through the host computer, and the test results can be intuitively judged through the data frames returned by the host computer.

[0070] like Figure 1 , 2 First, the interfaces of communication module 1 and communication module 2 are respectively led out to the adapter board, so as to facilitate the RXD, TXD, and GND signals of the smart meter to be connected to the communication module in parallel with its signal transmission line to another communication module, and transfer its communication module to the storage.

[0071] Then the master station is simulated to communicate with the smart meter, and the communication data is recorded through the serial port to realize passive meter reading. At the same time, if a module fails to communicate during the communication process, the specific cause of the failure can be intuitively determined through the reading results.

[0072] Considering that the communication module may have insufficient signal line voltage driving capability when transmitting data, in order to solve this problem, it is necessary to add an isolation booster device on the adapter board to increase the communication signal potential. This can facilitate signal detection while solving the problem that in practical applications, the method may fail to communicate due to voltage reduction caused by one of the lines being turned on.

[0073] As a further introduction, taking the test of two communication modules as an example, a detection example of communication between an HPLC carrier communication module (hereinafter referred to as a carrier module) and a TTL module is adopted, including the following steps:

[0074] Step 1: Insert the pin header at the interface of the smart meter and the communication module, and lead the weak current terminals of the smart meter and the communication module to the adapter board, that is, the signal is directly connected to the outside, which is convenient for transfer and testing;

[0075] Step 2: Connect the isolated boost device 1 and the isolated boost device 2 to the adapter board and power them with an isolated power supply, such as Figure 5 As shown. VCC and SVCC are two isolated power supplies, VCC1 and VCC2 are different voltages derived from the same power supply, and SVCC1 and SVCC2 are the same as above;

[0076] Step 3: Transfer the communication signals RXD and TXD from the carrier line communication port to the voltage boost chip. In addition, all ports of the carrier line communication port are correspondingly connected to the communication module 1;

[0077] Step 4: Connect the boosted communication port in parallel to the carrier line communication port and the TTL communication port, such as Figure 6 As shown;

[0078] Step 5: Supply nominal voltage to the smart meter, communicate with the smart meter through the analog master station of the host computer, and the TTL module monitors the communication data of the communication module through the shared serial port and records the data into the memory;

[0079] Step 6: Use the communication host computer to communicate continuously with the communication module and the TTL module, observe the communication results, and make judgments and data stability analysis.

[0080] The judgment logic of the present invention is as follows: if the communication module fails to communicate under normal circumstances, after completing the above operation steps, step 7 is performed to judge the cause of the communication failure:

[0081] Step 7.1: Perform communication on both the electric energy meter carrier module communication 1 and TTL communication at the same time, record the communication results, and proceed to step 7.2;

[0082] Step 7.2: If simultaneous communication is possible, proceed to step 7.3; if simultaneous communication is not possible, proceed to step 7.4;

[0083] Step 7.3: If communication is possible at the same time, the communication stability is judged. Specifically, the judgment formula of the stability calculation method in step 7.3.1 is used to judge whether the communication reliability is qualified;

[0084] Step 7.3.1, first, define the total number of TTL communications as T1, and the number of successful communications as N1; define the total number of communications of communication module 1 as T2, and the number of successful communications as N2;

[0085] Then, the TTL communication success rate is σ1=N1 / T1╳100%, and the communication success rate of communication module 1 is σ2=N2 / T2╳100%;

[0086] Among them, the judgment condition of the communication success rate of σ1 and σ2 is whether it is greater than or equal to 99%, and the carrier line communication reliability P = σ1╳σ2 is defined, and the judgment condition is whether it is equal to 100%;

[0087] If the final test result is P=100%, go to step 11, and then add other module tests and so on. If any of them is not satisfied, go to step 10;

[0088] Step 8: Test whether communication is possible through the TTL module port through the communication host computer. If the communication is normal, judge its communication reliability. If qualified, proceed to step 9. If unqualified or unable to communicate, it can be judged that the communication failure is a problem with the carrier line of the electric energy meter, and proceed to step 10;

[0089] Step 9: Test the module port for communication through the communication host computer. If the communication is normal, judge its communication reliability. If qualified, go to step 11 and retest. If unqualified or unable to communicate, it can be judged that there is a problem with the module matched with the electric energy meter, and go to step 10;

[0090] Specifically, first, the data returned by the host computer is used to determine whether the TTL communication module related to the carrier route can communicate normally. If it can communicate normally, its communication success rate σ1 is calculated and it is determined whether it is required. If the communication success rate does not meet the standard, it can be determined that the carrier route communication is unreliable, and the process goes to step 11 for rectification. If the communication success rate meets the standard, it can be determined that the communication is qualified, and the process goes to step 10;

[0091] Step 10: After determining the part to which the problem belongs, the R&D personnel responsible for that part will make corresponding rectifications to the fault. After the rectification is completed, proceed to step 7 and retest;

[0092] Specifically, the data returned by the host computer 1 is used to determine whether the communication fails, that is, whether the carrier module can communicate normally. If it can communicate normally, its communication success rate σ2 is calculated, and it is determined whether it is required. If the communication success rate does not meet the standard, it can be determined that the carrier route communication is unreliable, and step 9 is entered for rectification. If the communication success rate meets the standard, it can be determined that the communication is qualified, and step 10 is entered;

[0093] Step 11: If the test is qualified and the module communication has a certain reliability, the test process is retested again. If the communication is normal and the communication reliability P=100%, and there are no remaining problems, the rectification is successful.

[0094] Among them, according to the meter standard Q / GDW 10354, its communication requirements are based on the DL / T 698.45 protocol, and its reporting / confirmation data interaction protocol describes that if no confirmation is received within the agreed timeout period, the reporting / confirmation can be initiated again. And in GB / T 17215.211, under the influence of some EMC, according to its Class B acceptance criteria, temporary reduction or loss of function or performance is allowed, the fixed reliability judgment standard is whether it is greater than or equal to 99%, and the final reliability judgment standard is whether it is equal to 100%.

[0095] The above method can realize the detection function of the meter communication module, the communication failure module and the TTL module communicate at the same time, if one of them fails to communicate, the result can be passed, and it can be judged concisely and intuitively whether it is a problem with the carrier line or a problem with the module and the meter not matching. At the same time, it is equivalent to stress testing the communication interface to ensure the reliability of data communication. The module communication detection function and passive meter reading function are realized.

[0096] In addition, since the communication port is connected in parallel to the communication interface, theoretically, as long as the signal output voltage is sufficient, the corresponding module can be wirelessly expanded to perform the test method proposed by the present invention, and the judgment formula proposed by the present invention can also be matched to its extended test accordingly. For the tester, the operation is simple and the judgment is convenient, and the above operation can be easily realized.

[0097] The present invention adopts a serial communication mode and realizes a passive meter reading function by sharing a data communication port, that is, the module communication information is obtained by monitoring and storing the module communication data.

[0098] The present invention can quickly locate the object that causes communication failure. The method simultaneously reads the data of the carrier module and other modules, and provides data support according to the calculation method of communication reliability to judge the reliability of module communication. The present invention belongs to the technical field of metering equipment communication detection, and more specifically relates to a smart meter module communication problem detection and passive meter reading system.

[0099] The present invention is fully described for a clearer disclosure, and the prior art is not listed one by one.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents; it is obvious for those skilled in the art to combine multiple technical solutions of the present invention. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims

1. A communication fault monitoring and passive meter reading method based on an electric meter communication module, characterized in that: The method is based on the communication between the HPLC carrier communication module and the TTL module; The method comprises the following steps: Step 1: insert a pin header into the interface of the smart meter and the communication module, and lead the weak current terminals of the smart meter and the communication module to the adapter board; Step 2, connecting the isolation boost device 1 to the adapter board and supplying power with an isolated power supply; Step 3, transferring the communication signals RXD and TXD derived from the carrier line communication port to the voltage boosting chip; Step 4, connecting the boosted communication port in parallel to the HPLC carrier communication port and the TTL communication port; Step 5, supplying nominal voltage to the smart meter, simulating the master station to communicate with the smart meter, the TTL module monitors the communication data of the communication module through the shared serial port, and records the data into the memory; Step 6: Continuously communicate with the communication module and the TTL module through the communication host computer, observe the communication results, and make judgments and data stability analysis.

2. The method for monitoring communication failures and passive meter reading based on an electric meter communication module according to claim 1, characterized in that: When the communication module fails to communicate, after finishing step 6, proceed to step 7 to determine the cause of the communication failure.

3. The method for monitoring communication failures and passive meter reading based on the electric meter communication module according to claim 2 is characterized in that: In step 7, perform the following steps: Step 7.1, perform communication on the electric energy meter communication module and TTL communication at the same time, record the communication results, and proceed to step 7.2; Step 7.2: If simultaneous communication is possible, proceed to step 7.3; if simultaneous communication is not possible, proceed to step 7.4; Step 7.3, if simultaneous communication is possible, the communication stability is judged, specifically by using the judgment formula of the stability calculation method in step 7.3.1 to judge whether the communication reliability is qualified.

4. The method for monitoring communication failures and passive meter reading based on an electric meter communication module according to claim 1, characterized in that: In step 7.3, perform the following steps; Step 7.3.1, first, define the total number of TTL communications as T1, and the number of successful communications as N1; define the total number of communications of communication module 1 as T2, and the number of successful communications as N2; Then, the TTL communication success rate is σ1=N1 / T1╳100%, and the communication success rate of communication module 1 is σ2=N2 / T2╳100%; Among them, the judgment condition of the communication success rate of σ1 and σ2 is whether it is greater than or equal to 99%, and the carrier line communication reliability P = σ1╳σ2 is defined, and the judgment condition is whether it is equal to 100%; If the final test result is P=100%, then go to step 11, add communication module 2 for testing, and so on. If any of the required modules is not satisfied, then go to step 10.

5. The method for monitoring communication failures and passive meter reading based on the electric meter communication module according to claim 4 is characterized in that: Step 8, test whether communication is possible through the TTL module port alone through the communication host computer; If the communication is normal, the communication reliability of the meter is judged. If the communication reliability is qualified, go to step 9; if the communication reliability is unqualified or communication is impossible, the TTL communication in the meter is judged as a communication failure, which is a problem with the carrier line of the meter, and go to step 10.

6. The method for monitoring communication failures and passive meter reading based on the electric meter communication module according to claim 5 is characterized in that: Step 9, first, through the communication host computer to return data, determine whether the TTL communication module related to the carrier route is communicating normally. If it can communicate normally, calculate the communication success rate σ1 of the TTL communication module, and determine whether the TTL communication module is required. If the communication success rate does not meet the standard, it is determined that the carrier route communication is unreliable, and go to step 11 for rectification. If the communication success rate meets the standard, it can be determined that the TTL communication module communication is qualified, and go to step 10.

7. The method for monitoring communication failures and passive meter reading based on the electric meter communication module according to claim 6 is characterized in that: Step 10: After determining the part to which the problem belongs, make corresponding corrections to the fault. After the corrections are completed, go to step 7 and retest; The data returned by the host computer 1 is used to determine whether the communication has failed, that is, whether the carrier module can communicate normally. If it can communicate normally, its communication success rate σ2 is calculated and it is determined whether it meets the requirements. If the communication success rate does not meet the standard, it is determined that the carrier route communication is unreliable, and step 9 is entered for rectification. If the communication success rate meets the standard, it is determined that the communication is qualified, and step 10 is entered.

8. The method for monitoring communication failures and passive meter reading based on the electric meter communication module according to claim 7 is characterized in that: Step 11: After the test is passed, the test process is retested again. If the communication is normal and the communication reliability P=100%, and there are no remaining issues, the rectification is successful.

9. A communication fault monitoring and passive meter reading system based on an electric meter communication module, characterized in that: The system includes an isolation booster device electrically connected to the smart meter; The isolation boosting device is electrically connected to a communication host computer via a communication module; the communication host computer is electrically connected to a memory for executing the method described in claim 1.

10. The communication fault monitoring and passive meter reading system based on the electric meter communication module according to claim 9 is characterized in that: The isolation booster device is equipped with an adapter plate; The communication host computer serves as a simulated master station; The memory includes a memory 1 and a memory 2; The communication host computers include host computer 1 and host computer 2; The communication module includes communication module 1 and communication module 2; The smart meter is electrically connected to the communication module 1 and the communication module 2 through the TXD channel and the RXD channel respectively; The communication module 1 includes a carrier module; the communication module 2 includes a TTL communication module; The RXD port of the smart meter is connected to the communication module 1, the carrier module, the host computer 1, and the storage 1 through the corresponding isolation booster device; The TXD port of the smart meter is connected to the communication module 2, the TTL communication module, the host computer 2, and the storage 2 through the corresponding isolation booster device; The communication module interface of the smart meter uses a pin connection; The communication signal is led out through the isolation booster device and connected to the TTL communication module and the carrier communication module. Finally, the reading frequency is set on the host computer software of the corresponding communication host computer, and the data is sent sequentially. The TTL communication and the carrier communication are read continuously, and the communication time period is set; if both the TTL communication and the carrier communication can communicate, the communication result is calculated and judged within the set communication time period; If the calculated communication reliability P meets the requirements, a retest is performed. If the test is qualified, it means that the communication line is reliable. If the calculated communication reliability P does not meet the requirements or communication is impossible, the cause and rectification are determined based on the TTL communication success rate σ1 and the carrier communication success rate σ2. After the rectification is completed, the test is performed again; if the test is qualified, the test is repeated.

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