TWI815473B - System for self-adaptive reading of smart water meter, method and computer readable medium thererof - Google Patents

Abstract

The present invention is a system for self-adaptive reading of smart water meter and a method thereof. A single water meter communication sub-machine can interface with different numbers of water meters and can automatically adapt to different numbers of water meters and automatically switch meter reading intervals. When an abnormal event occurs in the connected water meter, the water meter communication sub-machine can actively notify a water meter management platform, and receive a downlink commands from the water meter management platform to adjust and update the system parameters of the water meter communication sub-machine itself and operating status of the water meters. Therefore, through the remote update operation method of the present invention, the water meter communication sub-machine can be used repeatedly and has an active alarm function, so that the purpose of reducing the waste of water resources and saving labor costs can be achieved. The present invention also provides a computer-readable medium for executing the method of the present invention.

Description

Adaptive case water meter management system, method and computer-readable medium

The present invention relates to the management and control technology of water meter communication sub-machine, and in particular, to an adaptive case-site water meter management system, method and computer-readable medium.

Countries are currently paying more and more attention to water resources management. How to effectively use and measure water resources is an important issue. Compared with the development of smart meter communication sub-machine, most of the smart water meter communication sub-machine only has power consumption based on consideration. The basic function of transmitting water meter values, and for different areas of independent master meters for single-family households and centralized water meters in buildings, it is often necessary to develop different communication sub-machine and transmission architecture, thus increasing the overall construction cost and production efficiency. Difficulty. Moreover, when the water meter communication sub-machine needs to be transferred or the system parameters need to be updated, personnel need to be dispatched to manually check and disassemble the sub-machine on site for updates. This action can easily cause waterproof problems of the water meter communication sub-machine and increase labor costs.

It can be seen that the above-mentioned conventional technology still has shortcomings. It is not a good designer and needs to be improved urgently. How to provide a control mechanism for water meter communication sub-machine, especially, in addition to In addition to transmitting water meter values, it can also automatically manage and monitor the status of equipment and water meters, while reducing the need for dispatching manpower. This will become a goal that people in this technical field are currently eager to pursue.

In order to solve the above-mentioned problems of the prior art, the present invention discloses an adaptive case water meter management system, which includes: a water meter communication sub-machine, which is connected to at least one water meter and is used to determine the connection through the RS485 communication protocol and the loop question and answer method. The number of water meters and the determination of the meter reading mode are used to analyze the water meter data of the at least one water meter so as to generate an alarm message when an abnormal event occurs in the water meter communication slave or the at least one water meter; and the water meter management platform is Connected to the water meter communication sub-machine to record the water meter data obtained by the water meter communication sub-machine. When receiving an alarm message from the water meter communication sub-machine, an alarm notification is generated to notify the user, and when execution is required During the update operation, a downstream control command is generated to control or update the water meter communication slave or the at least one water meter.

In one embodiment, the water meter communication sub-machine includes: an automatic meter reading module, which is used to perform a cyclic question and answer based on the RS485 identification code to determine the number of connected water meters, and determine the number of connected water meters based on the number of connected water meters. Meter reading mode; the water meter management module is used to record the correlation between each RS485 identification code and the water meter number of the corresponding water meter; the wireless communication module is used to transmit the water meter data; the communication equipment management module is used Store the device number, device key and the downstream control command registered in the water meter management platform to represent the water meter communication slave; and the alarm module is used to generate the alarm message.

In another embodiment, during the initialization phase, the automatic meter reading module reads meters with a preset number, and continuously collects responses from the RS485 identification code to determine the number of connected water meters. .

In another embodiment, when the automatic meter reading module determines that the number of connected water meters is one, it sets the water meter communication slave machine to an independent meter reading mode, and when it determines that the number of connected water meters is plural. , set the water meter communication sub-machine to centralized meter reading mode.

In another embodiment, the alarm module is configured when the continuous occurrence frequency of abnormal events of the water meter communication sub-machine is greater than the first threshold or when the continuous occurrence frequency of abnormal events of the water meter connected to the water meter communication sub-machine is greater than the second threshold. When the critical value is exceeded, this alarm message is generated.

In one embodiment, the water meter management platform includes: a platform water meter management module, which is used to provide registration of the water meter communication slave, to create and process the water meter communication slave and to interface with the water meter communication slave. The water meter data of all water meters; the water meter data collection module is used to receive the water meter numerical data of all water meters from the water meter communication sub-machine to classify according to the water meter numbers of all water meters; the warning module is used to collect When the alarm message is received, a corresponding alarm notification is generated; and the command (CMD) control module is used to generate the downstream control command to control or update various internal parameters of the water meter communication slave or the at least one water meter.

In another embodiment, the water meter communication sub-machine obtains the water meter data of the at least one water meter and performs analysis to determine whether the number of consecutive failures of any water meter is greater than the third critical value or the number of consecutive failures after successful recording is less than the fourth critical value. At this time, the device number, RS485 identification code and water meter number corresponding to the RS485 identification code of the water meter communication slave are sent to the water meter management platform.

In another embodiment, in addition to the header information (Header) containing the downlink control command code, when used in the water meter communication sub-machine, the downstream control command also includes the reading information used to bring the water meter communication sub-machine into the water meter communication sub-machine. The load information of one of the meter setting parameters, operation setting parameters, and historical data parameters, and when used for the water meter connected to the water meter communication slave, includes all water meter setting parameters and bandwidth used to bring into the interface. Enter the specific water meter number and operation process parameters, and enter the load information of one of the specific RS485 identification code and operation process parameters.

The present invention further discloses an adaptive case water meter management method, which is executed by computer equipment. The method includes the following steps: making the water meter communication sub-machine connected to at least one water meter determine the intermediary through the RS485 communication protocol and the loop question and answer method. The number of connected water meters and the meter reading mode are determined; the water meter communication sub-machine obtains the water meter data of the at least one water meter and analyzes it, so as to generate an alarm message when an abnormal event occurs in the water meter communication sub-machine or the at least one water meter; and Instructs the water meter management platform to generate an alarm notification to notify the user when it receives an alarm message from the water meter communication slave.

In the above method, it further includes generating a downstream control command by the water meter management platform to control or update the water meter communication sub-machine or the at least one water meter.

The invention further discloses a computer-readable medium, which is used in a computing device or a computer and stores instructions to execute the aforementioned adaptive case water meter management method.

In summary, the purpose of the adaptive water meter management system and method in the field of the present invention is to provide a water meter communication sub-machine with an adaptive water meter reading and updating operation mode in the field, using a single water meter communication sub-machine without the need for additional installations. Other equipment only uses RS485 connection to provide an interface for the number of water meters in different areas. The water meter communication sub-machine can automatically switch the meter reading mode of the water meter communication sub-machine according to the environment. When an abnormality occurs in the water meter, it can also proactively report Water meter management platform. In addition, when the water meter communication sub-machine needs to change system parameters or adjust the operating status of the water meter, it can also issue automatic execution instructions from the remote end through the water meter management platform. Therefore, the present invention can effectively reduce equipment costs and labor costs, thereby achieving the maximum Optimize the use of water resources.

1: Adaptive case water meter management system

11:Water meter communication submachine

111:Automated meter reading module

112:Water meter management module

113:Wireless communication module

114: Communication equipment management module

115:Alarm module

12:Water meter management platform

121: Platform water meter management module

122: Water meter data collection module

123:Alert module

124:Command control module

13:Water meter

S301-S303: Steps

Please refer to the detailed description of the present invention and its accompanying drawings to further understand the technical content and its purpose and effects of the present invention. The relevant pictures are:

Figure 1 is a system architecture diagram of the adaptive case water meter management system of the present invention.

FIG. 2 is a system architecture diagram of an adaptive field water meter management system according to an embodiment of the present invention.

Figure 3 is a step diagram of the adaptive water meter management method in the field of the present invention.

Figure 4 is a flow chart of the water meter communication sub-machine adapting according to the present invention.

Figure 5 is a flow chart of the automatic meter reading and updating operation of the water meter communication sub-machine of the present invention.

The following describes the technical content of the present invention through specific embodiments. Those familiar with the art can easily understand the advantages and effects of the present invention from the content disclosed in this specification. However, the present invention can also be implemented or applied through other different specific implementation forms.

The invention relates to an adaptive meter reading and updating behavior method on a water meter communication sub-machine. When a single sub-machine terminal device is used to connect different numbers of water meters, it analyzes the mode and number of connected water meters through a cyclic question-and-answer meter reading process. And when an event occurs, it will be sent back to the water meter management platform to The system parameters and water meter behavior of the water meter communication slave are controlled through downstream commands from the water meter management platform.

Please refer to Figure 1, which is a system architecture diagram of the adaptive water meter management system of the present invention. The adaptive water meter management system 1 of the present invention includes a water meter communication sub-machine 11 connected to at least one water meter 13. and water meter management platform12.

The water meter communication sub-machine 11 is used to determine the number of connected water meters and determine the meter reading mode through the RS485 communication protocol and the loop question and answer method, so as to analyze the water meter data of at least one water meter 13 in order to facilitate the water meter communication sub-machine 11 and when an abnormal event occurs in the at least one water meter 13, an alarm message is generated. In other words, the water meter communication sub-machine 11 and the water meter 13 are connected and transmit information through the RS485 communication protocol. The water meter communication sub-machine 11 uses a circular question and answer method to determine the number of water meters to be connected to the water meter communication sub-machine 11 and the method to be used. Meter reading mode, and further analyzes the water meter data from the water meter 13 to generate an alarm message when an abnormal event occurs in the water meter communication slave 11 or the connected water meter 13 .

The water meter management platform 12 is connected to the water meter communication sub-machine 11 and is used to record the water meter data obtained by the water meter communication sub-machine 11. When an alarm message from the water meter communication sub-machine 11 is received, an alarm notification is generated to notify When the user needs to perform an update operation, a downward control command is generated to control or update the water meter communication sub-machine 11 or the at least one water meter 13 . In short, the water meter management platform 12 is used to manage the water meter communication sub-machine 11 and the water meter 13. When the water meter management platform 12 receives the alarm message from the water meter communication sub-machine 11, an alarm notification will be generated to notify the user. In addition, if When the water meter communication sub-machine 11 or the water meter 13 needs to perform an update operation, the water meter management platform 12 can generate a downstream control command to control or update the water meter communication sub-machine 11 or the water meter 13 .

In one embodiment, when the water meter communication slave 11 obtains the water meter data of at least one water meter 13, it will analyze it and determine whether to issue an alarm based on it. The rules include that the number of consecutive failures of any water meter 13 is greater than a preset threshold. When the value or the number of consecutive failures after successful recording is less than another preset threshold, the water meter communication slave 11 is caused to transmit the device number, RS485 identification code and water meter number corresponding to the RS485 identification code of the water meter communication slave 11 To the water meter management platform 12, the water meter management platform 12 performs recording and alarm processing, in which the preset threshold value or another preset threshold value can be adjusted according to needs.

In one embodiment, when the water meter management platform 12 generates a downstream control command, in addition to the header information (Header) containing the downstream control command code, the downstream control command is used to control or update the water meter communication submachine. At 11 o'clock, the downstream control command further includes load information used to bring into one of the meter reading setting parameters, operation setting parameters, and historical data parameters of the water meter communication slave 11 . In addition, when the downstream control command is used to control or update the water meter 13 to which the water meter communication slave 11 is connected, the downstream control command includes all the water meter setting parameters used to bring into the connection, the specific water meter number and the Operation process parameters, load information with one of the specific RS485 identification code and operation process parameters. That is to say, as the objects to be controlled by the downstream control instructions are different, the load information carried by them will also be different due to different functions.

In summary, the present invention provides a water meter reading method and an updated operation method that are adaptive to the scene to achieve the purpose of the present invention. The water meter reading method uses the water meter communication sub-machine 11 and the RS485 identification code (RS485_ID) to read the meter. The mechanism uses a cyclic question and answer method to provide the use of independent fields and centralized fields. It automatically records the number of water meters connected to the water meter communication slave 11, the RS485_ID and the corresponding water meter number, so that every time the meter is read, , can automatically omit unnecessary RS485_ID reading, so it can reduce power consumption, and when the water meter appears abnormal, it can also send out an alarm message immediately.

In addition, the update operation method is to receive downstream control messages at the same time when reporting data to the water meter management platform 12 through the water meter communication sub-machine 11, and update the operation status of the water meter communication sub-machine 11 and the connected water meters in real time, thus providing a water meter management platform. 12 Remotely adjust the use area, meter reading quantity, meter reading interval, upload interval and other functions of the water meter communication sub-machine 11 to achieve the purpose of reducing labor costs and reusing the water meter communication sub-machine 11.

FIG. 2 is a system architecture diagram of an adaptive field water meter management system according to an embodiment of the present invention. As shown in the figure, the adaptive water meter management system 1 of the present invention includes a water meter communication sub-machine 11 for mounting N water meters 13 and a water meter management platform 12 .

The water meter communication sub-machine 11 includes an automatic meter reading module 111, a water meter management module 112, a wireless communication module 113, a communication equipment management module 114 and an alarm module 115. In short, the automatic meter reading module 111 performs a cyclic question and answer based on the RS485 identification code (ID) to determine the number of water meters 13 it is connected to, and determines the water meter communication slave 11 based on the number of water meters 13 it is connected to. In the meter reading mode, the water meter management platform 12 series records the correlation between each RS485 identification code (ID) and the water meter number of the corresponding water meter, so that the corresponding water meter can be known later through each RS485 identification code (ID). The wireless communication module 113 is used to transmit the water meter data of the water meter 13 to the water meter management platform 12. The communication equipment management module 114 is used to store the equipment number registered in the water meter management platform 12 and used to represent the water meter communication slave 11. , the device key and the downstream control command, that is, the communication device management module 114 stores the device number of the water meter communication slave 11 where it is located, the device key used for verification, and the downstream control command from the water meter management platform 12. Finally, The alarm module 115 is used to generate alarm messages to be sent to the water meter management platform 12 .

In one embodiment, during the initialization phase, the automatic meter reading module 111 reads meters with a preset number, and continuously collects responses of RS485 identification codes to determine the number of water meters 13 it is connected to. . In other words, the automatic meter reading module 111 will first preset a number to start meter reading, and then continuously collect responses from the RS485 identification code to determine the number of water meters 13 to interface with the water meter communication slave 11 .

In another embodiment, when the automatic meter reading module 111 determines the number of connected water meters 13, if it is determined that the number of water meters 13 is one, the meter reading mode of the water meter communication sub-machine 11 is set to independent reading. meter mode. On the contrary, if it is determined that the number of water meters 13 is plural, the meter reading mode of the water meter communication slave 11 is set to the centralized meter reading mode.

In addition, the alarm module 115 generates the alarm when the frequency of continuous occurrence of abnormal events in the water meter communication sub-machine 11 is greater than a critical value or when the frequency of continuous occurrence of abnormal events in the water meter 13 connected to the water meter communication sub-machine 11 is greater than another critical value. message.

It can be seen from the above that the water meter communication sub-machine 11 includes five modules. In order to adapt to different field environments, in the initialization stage, the automatic meter reading module 111 of the water meter communication sub-machine will set the number of meter readings to the maximum value M , And start to read the meters one by one through the RS485 identification code (RS485_ID). The water meter management module 112 causes the water meter communication slave 11 to start checking from ID_1 to ID_M , and record all the data of the connected water meters to the water meter management module. 112, the relevant information can be used as the relevant basis for the next meter reading. After the water meter communication sub-machine 11 collects the current data, the relevant data can be transmitted back through the wireless communication module 113. When the water meter communication sub-machine 11 performs a registration action with the water meter management platform 12, the water meter communication sub-machine 11 will The communication device management module 114 will store the device number ( D _id ), device key ( D _key ) and downstream control command (CMD) assigned to the water meter communication slave 11 downstream from the water meter management platform 12, so as to update the slave The module action reduces the registration action for the next upload, and the alarm module 115 actively notifies the water meter management platform 12 of the problem when the water meter communication slave 11 detects an abnormality in itself or an abnormality in the water meter 13 connected to it. with the water meter number to avoid related problems or reduce losses.

In addition, the water meter management platform 12 includes a platform water meter management module 121, a water meter data collection module 122, an alarm module 123, and a command (CMD) control module 124. In short, the platform water meter management module 121 is used to provide registration of the water meter communication slave 11, to establish and process the water meter communication slave 11 and the water meter data of all water meters 13 interfaced with the water meter communication slave 11, and to collect water meter data. The module 122 is used to receive the water meter numerical data of all water meters 13 from the water meter communication sub-machine 11, and classify it according to the water meter numbers of all water meters 13. The warning module 123 is used to receive the water meter numerical data from the water meter communication sub-machine 11. When an alarm message is generated, a corresponding alarm notification is generated, and the command control module 124 is used to generate downstream control instructions to control or update various internal parameters of the water meter communication slave 11 or the related water meter 13 .

It can be seen from the above that the water meter management platform 12 includes four modules. Among them, the platform water meter management module 121 is responsible for registering the water meter communication sub-machine 11 with the water meter management platform 12 and assisting in the construction and processing of each water meter communication sub-machine 11. For the mounted water meter data, the water meter data collection module 122 is responsible for classifying the received water meter numerical data according to the different water meter numbers. The warning module 123 is used to notify relevant people through screen reminders or text messages when abnormal water meter events occur. Managers and maintenance personnel perform follow-up processing actions, and the command control module 124 is responsible for controlling related functions of the water meter communication submachine 11 and the water meter 13 through downstream control instructions.

Figure 3 is a step diagram of the adaptive water meter management method in the field of the present invention. As shown in the figure, the adaptive case water meter management method of the present invention can be executed by computer equipment and includes the following steps.

In step S301, the water meter communication slave machine connected to at least one water meter is made to determine the number of connected water meters and determine the meter reading mode through the RS485 communication protocol and the loop question and answer method. This step explains how the water meter communication slave unit exchanges data with the water meter through the RS485 communication protocol, and communicates with the connected water meter through a round-robin question and answer method to determine the number of connected water meters and determine the meter reading mode of the water meter communication slave unit.

In step S302, the water meter communication sub-machine is caused to obtain the water meter data of the at least one water meter and then analyze it, so as to generate an alarm message when an abnormal event occurs in the water meter communication sub-machine or the at least one water meter. This step means that after the water meter communication sub-machine obtains the water meter data of the connected water meters, it can analyze the water meter numerical data of all water meters to generate an alarm when an abnormal event occurs in the water meter communication sub-machine or the water meter it is connected to. message.

In step S303, when the water meter management platform receives the alarm message from the water meter communication slave, an alarm notification is generated to notify the user. This step explains that when the water meter management platform receives the alarm message sent by the water meter communication slave, it will generate an alarm notification and notify the user.

In another embodiment, after step S303, it further includes generating a downstream control instruction by the water meter management platform to control or update the water meter communication sub-machine or the at least one water meter. In other words, when the water meter communication sub-machine or water meter needs to be updated and set up, it can be remotely executed by the water meter management platform. That is, the water meter management platform generates downstream control instructions and transmits them to the water meter communication sub-machine for water meter communication. Control or update of sub-machine or water meter.

During specific implementation, the water meter communication sub-machine includes an automatic meter reading module, a water meter management module, a wireless communication module, a communication equipment management module and an alarm module, while the water meter management platform includes a platform water meter management module, water meter data Collection modules, alert modules, and command (CMD) control modules. The present invention utilizes a single water meter communication sub-machine (water meter related communication equipment) to pass The RS485 identification code (RS485_ID) uses a cyclic question and answer method to record the correlation between the RS485 identification code and the water meter number. After that, the water meter communication sub-function can perform data upload and receive downstream control commands from the water meter management platform to control the water meter communication sub-function. The machine interfaces with the action behavior of the water meter.

Specifically, the automatic meter reading module can use the RS485_ID loop question and answer method to determine the number of connected water meters, and can automatically switch to different meter reading modes according to the number of water meters. The water meter management module records the RS485_ID and water meter number. Correlation and event analysis of each water meter data. The wireless communication module provides communication between the water meter communication slave and the water meter management platform. The communication equipment management module receives the CMD control instructions from the water meter management platform to control Or update the internal parameters of the water meter communication sub-machine and the connected water meter, and the alarm module sends an alarm message when abnormal events occur between the water meter communication sub-machine and the connected water meter.

In one embodiment, during the initialization phase, the automatic meter reading module reads meters with the original set number, and learns and determines the number of water meters by continuously collecting RS485_ID responses. After that, the automatic meter reading module reads the water meters according to the number of water meters. To determine the meter reading mode, when the number of water meters is one, the water meter communication sub-machine is set to the independent meter reading mode. On the contrary, the water meter communication sub-machine operates in the centralized meter reading mode, so that it can be used in different situations. need.

Regarding the aforementioned event analysis of water meter data, certain fixed features include reporting the water meter communication slave number to the back-end water meter management platform for recording, matching the RS485 identification code with the water meter number, and identifying the RS485 The code and water meter number are reported to the back-end water meter management platform for recording. When the number of consecutive failures of the RS485 identification code is greater than a critical value or the number of consecutive failures after the RS485 identification code is successfully recorded is less than another threshold, it indicates an abnormal event.

Regarding the aforementioned downstream control instructions, certain fixed features including header information (Header) must be included in the downstream control instruction code. In addition, when the downstream control command is for the water meter communication sub-machine, the remaining characteristic values must include at least one of the following: load information is brought into the water meter communication sub-machine to read the meter setting parameters, load information is brought into the water meter communication sub-machine operation setting parameters, and The load information is brought into the historical data parameters of the water meter communication slave; when the downstream control command is for the connected water meter, the remaining characteristic values must include at least one of the following: the load information is brought into all the connected water meter setting parameters, the load information is brought into Enter the specific water meter number and operation process parameters and load information into the specific RS485 identification code (RS485_ID) number and operation process parameters.

In addition, regarding the aforementioned abnormal events between the water meter communication sub-machine and the connected water meter, the alarm module must include at least one of the following when sending an alarm notification: the frequency of continuous occurrence of abnormal events in the water meter communication sub-machine must be greater than a critical value and the connected water meter must The frequency of continuous occurrence of abnormal events must be greater than another threshold value. Among them, abnormal events include, for example: the cumulative number of days when the water meter communication sub-machine has insufficient power is greater than the critical value, the water meter communication sub-machine and the connected water meter have no response greater than the critical value, or the connected water meter itself has internal memory. Establish relevant alarm messages such as continuous accumulation of alarm days.

Figure 4 is a flow chart of the water meter communication sub-machine adapting according to the present invention. Because the installation site environment and the number of water meters are uncontrollable factors, in order to comply with each environment, the water meter communication sub-machine will initialize the parameters after starting execution. The maximum number of meter readings is M. The actual number is N. Each RS485_ID will be read in sequence. ( I _n ) for confirmation, the successful initialization response of each ID setting is S , the maximum number of failed initializations for a single ID is I _n F _max , the interval time for a single meter reading inquiry is T _period , and the maximum value of M waiting seconds is T _max , the calculation process is as follows.

First calculate the maximum number of waiting seconds for a single time, using the following formula (1):

Among them, the parameter C _pt is the maximum number of waiting times for each interval.

In the initialization phase, when the table reading waiting time exceeds the maximum T _max , the number of failures I _n F will be accumulated. When it is greater than I _n F _max , this ID will be skipped the next time the meter is read to reduce power consumption. Judgment formula (2 )as follows:

Among them, the parameter R _pass is the RS485_ID omitted in the meter reading stage.

After each ID is skipped, the actual number of connected water meters will decrease successively, and the final number of actual reading meters is f _{( N )} , which means that formula (3) is as follows:

In the initialization phase, if the response I _n is successfully received, it will be placed in the read success area R _success ={ I _n ,....I _{max -1} }. At this time, the water meter management module will record I _n and the corresponding water meter. The table number WM _id represents formula (4) as follows:

Among them, the parameter P _S is the pool corresponding to the RS485_ID and the corresponding water meter number, M is the maximum value set for the number of reading meters, R _type is the water meter reading type, Independent is an independent water meter, and Centralized is a centralized water meter.

During normal meter reading, if the RS485_ID( I _n ) placed in the success area does not respond, the RS485_ID( I _n ) is different from the corresponding meter number, the battery is too low, or other different events, the water meter communication sub-machine will report the time and event that occurred. With the corresponding water meter number, the alarm message is returned to the water meter management platform. The alarm message string tag link is as follows:

Single water meter mark

OAM,N,E _time E _type E _value , SN

Multiple water meter markings

OAM,NE _time E _type E _value E _time E _type E _time E _type E _value ... , SN

Among them, the parameter OAM is the alarm upload message, N means there are N groups of messages underneath, E _time is the event time, E _type is the event type (no response or abnormal meter number, etc.), E _value is the event water meter number, and SN is a string. end symbol.

Figure 5 is a flow chart of the automatic meter reading and updating operation of the water meter communication sub-machine of the present invention. As shown in the figure, when the water meter communication sub-machine needs to change the field, replace the water meter, or modify the meter reading interval, change the upload time and other related system parameters, when the water meter communication sub-machine actively uploads the water meter numerical data every day, it will automatically Ask the command control module whether there is a new CMD control command. The control message string tag link is as follows:

CMD _ID ,L,P.V...,SN

Among them, the parameter CMD _id represents the downstream control command, id =0 means that all water meters under the water meter communication slave machine will uniformly change parameters, id =[1,2,..., M ] means that this parameter can only be changed for specific water meters. , L represents the length of the subsequent PV message, PV is the parameter rule (including system parameters for the water meter communication slave itself and related parameter control instructions for the connected water meter), SN is the end of the string symbol.

To sum up, the purpose of the present invention is to use an algorithm to automatically adapt to the number of different water meters and automatically convert the meter reading range when reading data from different numbers of water meters on a single water meter communication sub-machine through RS485. Among them, when the connected water meters When an abnormal event occurs, the water meter communication sub-machine can actively notify the water meter management platform and receive remote commands from the water meter management platform to update the system parameters of the water meter communication sub-machine itself and the operating status of the connected water meter. In addition, the present invention can be used in one-to-one independent water meters and one-to-many centralized building household water meters through a water meter communication sub-machine. It can also be used to remotely update the operation method to enable the water meter communication sub-machine. It can be used repeatedly, and when an abnormal event occurs on the water meter, it will proactively alert and provide the event time, event type and event water meter number to the water meter management platform to facilitate immediate dispatch of personnel for processing, thereby reducing water waste and saving labor costs. purpose.

Based on the fact that most of the current domestic and foreign technologies are mainly focused on the mechanical or electronic water meter body or the back-end information platform, the present invention provides a meter reading process and update operation method focusing on the water meter communication sub-machine, which has the following advantages.

First, the present invention uses a single water meter communication sub-machine and uses RS485_ID and loop question and answer methods to analyze the mode and quantity of connected water meters, so as to meet the needs of different usage environments such as independent single-family meters and centralized household meters in buildings.

Secondly, when the water meter communication sub-machine actively communicates with the platform, the present invention brings in a variety of parameters during downlink to control the usage status of the water meter communication sub-machine and its connected water meter, so as to reduce the labor cost of maintenance and operation and improve the reuse of the communication sub-machine. Rate.

The above detailed description is a specific description of one possible embodiment of the present invention. However, this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the technical spirit of the present invention shall be included in within the scope of the patent in this case.

1: Adaptive case water meter management system

11:Water meter communication submachine

12:Water meter management platform

13:Water meter

Claims (10)

An adaptive case water meter management system includes: The water meter communication slave is connected to at least one water meter and is used to determine the number of connected water meters and determine the meter reading mode through the RS485 communication protocol and the loop question and answer method, so as to analyze the water meter data of the at least one water meter for analysis. When an abnormal event occurs in the water meter communication slave or at least one water meter, an alarm message is generated; and The water meter management platform is connected to the water meter communication sub-machine and is used to record the water meter data obtained by the water meter communication sub-machine. When receiving an alarm message from the water meter communication sub-machine, an alarm notification is generated to notify the user. , and when it is necessary to perform an update operation, generate a downward control instruction to control or update the water meter communication slave or the at least one water meter. The adaptive water meter management system in the field as described in claim 1, wherein the water meter communication sub-machine includes: The automatic meter reading module is used to perform cyclic question and answer based on the RS485 identification code to determine the number of connected water meters, and determine the meter reading mode based on the number of connected water meters; The water meter management module is used to record the correlation between each RS485 identification code and the water meter number of the corresponding water meter; The wireless communication module is used to transmit the water meter data; The communication equipment management module is used to store the equipment number, equipment key and the downstream control command registered in the water meter management platform and used to represent the water meter communication sub-machine; and The alarm module is used to generate the alarm message. The adaptive water meter management system in the field as described in request item 2, wherein the automatic meter reading module reads meters with a preset number during the initialization phase and continuously collects responses from the RS485 identification code. , based on which the number of connected water meters can be determined. The adaptive case water meter management system as described in claim 2, wherein the alarm module is when the frequency of abnormal events of the water meter communication sub-machine is greater than the first critical value or when the water meter communication sub-machine is connected to This alarm message is generated when the frequency of continuous occurrence of abnormal events on the water meter is greater than the second threshold. The adaptive case water meter management system as described in claim 1, wherein the water meter management platform includes: The platform water meter management module is used to provide registration of the water meter communication sub-machine to establish and process the water meter data of the water meter communication sub-machine and all water meters connected to the water meter communication sub-machine; The water meter data collection module is used to receive the water meter numerical data of all water meters from the water meter communication sub-machine to classify all water meters according to their water meter numbers; The warning module is used to generate corresponding warning notifications when receiving the warning message; and The command control module is used to generate the downstream control command to control or update various internal parameters of the water meter communication slave or the at least one water meter. The adaptive case-site water meter management system as described in claim 1, wherein the water meter communication sub-machine obtains the water meter data of at least one water meter and analyzes it to detect when the number of consecutive failures of any water meter is greater than the third critical value or When the number of consecutive failures after successful recording is less than the fourth threshold, the device number, RS485 identification code, and water meter number corresponding to the RS485 identification code of the water meter communication slave are sent to the water meter management platform. The adaptive water meter management system in the field as described in request item 1, wherein, in addition to the meter header information containing the downlink control command code, the downstream control command also includes, when used for the water meter communication sub-machine, the Enter the load information of one of the meter reading setting parameters, operation setting parameters, and historical data parameters of the water meter communication slave unit, and when used for the water meter to which the water meter communication slave unit is connected, including the method used to bring in the intervention Receive all water meter setting parameters, enter a specific water meter number and operation process parameters, and enter the load information of one of the specific RS485 identification code and operation process parameters. An adaptive case-site water meter management method is executed by computer equipment. The method includes the following steps: Let the water meter communication slave connected to at least one water meter determine the number of connected water meters and determine the meter reading mode through the RS485 communication protocol and the loop question and answer method; Cause the water meter communication sub-machine to obtain the water meter data of the at least one water meter and analyze it, so as to generate an alarm message when an abnormal event occurs in the water meter communication sub-machine or the at least one water meter; and Instructs the water meter management platform to generate an alarm notification to notify the user when it receives an alarm message from the water meter communication slave. The adaptive field water meter management method described in claim 8 further includes generating a downstream control command from the water meter management platform to control or update the water meter communication sub-machine or the at least one water meter. A computer-readable medium, used in a computing device or a computer, stores instructions to execute the adaptive on-site water meter management method described in any one of claims 8 to 9.

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