A digital monitoring system and method for gas pressure regulating cabinet

Abstract

The present application provides a digital monitoring system and method for a gas pressure regulating cabinet. The system includes: a main monitoring unit and multiple sub-monitoring units, the main monitoring unit is arranged at the main monitoring station, and the multiple sub-monitoring units are arranged in sequence at each gas pressure regulating cabinet along the gas pipeline, and each sub-monitoring unit is respectively communicated with the main monitoring unit; the sub-monitoring unit is used to monitor the gas pressure regulating cabinet where it is located, collect monitoring data, and send the monitoring data to the main monitoring unit according to a preset period; the main monitoring unit is used to generate monitoring results based on the monitoring data received from each gas pressure regulating cabinet, and the monitoring results include status information of each gas pressure regulating cabinet. Compared with the existing technology, the present application can monitor the gas pressure regulating cabinet on the gas pipeline in real time at the main monitoring station, without the need for line patrol personnel to check the gas pressure regulating cabinet every day, so once a leak occurs, it can be discovered in the first time, the alarm response is fast, and the power consumption is low.

Description

Technical Field

[0001] The present application relates to the technical field of gas pipeline detection, and in particular to a digital monitoring system and method for a gas pressure regulating cabinet. Background Art

[0002] The gas pressure regulating cabinet (also known as the natural gas pressure regulating cabinet or gas pressure regulating station) is a key equipment in the gas transmission pipeline. The main function of the gas pressure regulating cabinet is to regulate and stabilize the system pressure, control the gas flow of the gas transmission system, and protect the system from excessively high or low outlet pressure.

[0003] There are many devices in the gas pressure regulating cabinet. Most of the gas pressure regulating cabinets use local display instruments and few have remote transmission functions. Therefore, line patrol personnel are required to check the gas pressure regulating cabinet every day to see whether the data displayed by the local instrument is normal. The real-time performance is very poor. Once a gas leak occurs, it cannot be discovered in the first time, causing major safety hazards.

[0004] In recent years, due to leakage of natural gas pipelines downstream of gas pressure regulating cabinets, gas has accumulated in confined spaces, and the gas concentration has continued to increase, eventually encountering open flames or electric sparks to cause explosions, seriously threatening the lives and property safety of the general public. If gas leaks can be discovered in time, the leak points can be quickly repaired, people can be evacuated in time, the confined spaces where gas is accumulated can be opened in time, and the gas can be discharged in time, accidents can be prevented and the lives and property safety of the general public can be protected. Summary of the Invention

[0005] The purpose of this application is to provide a digital monitoring system and method for a gas pressure regulating cabinet.

[0006] The first aspect of the present application provides a digital monitoring system for a gas pressure regulating cabinet, comprising:

[0007] A main monitoring unit and multiple sub-monitoring units, wherein the main monitoring unit is arranged at the main monitoring station, and the multiple sub-monitoring units are sequentially arranged in each gas pressure regulating cabinet along the gas pipeline, and each sub-monitoring unit is respectively communicated with the main monitoring unit;

[0008] The sub-monitoring unit is used to monitor the gas pressure regulating cabinet where it is located, collect monitoring data, and send the monitoring data to the main monitoring unit according to a preset period;

[0009] The main monitoring unit is used to generate a monitoring result based on the monitoring data received from each gas pressure regulating cabinet, and the monitoring result includes status information of each gas pressure regulating cabinet.

[0010] In a possible implementation, in the digital monitoring system for the gas pressure regulating cabinet provided in the embodiment of the present application, the main monitoring unit is further configured to send the monitoring result to the at least one communication terminal.

[0011] In a possible implementation, in the digital monitoring system for the gas pressure regulating cabinet provided in the embodiment of the present application, the sub-monitoring unit includes: a display control module and a plurality of monitoring modules connected to the display control module;

[0012] The display control module is used to collect the monitoring data corresponding to each of the monitoring modules in sequence. If the monitoring data corresponding to the current monitoring module meets the alarm condition but does not meet the filtering condition, an event data is generated and stored in the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds a preset time difference threshold, all the event data in the event buffer are sent to the main monitoring unit together; if the time difference does not exceed the preset time difference threshold, the data collection of the next monitoring module is continued; the preset time difference threshold is the time for the display control module to collect all the monitoring modules once;

[0013] The main monitoring unit is further configured to generate alarm information based on the event data received from each gas pressure regulating cabinet.

[0014] In one possible implementation, in the digital monitoring system of the above-mentioned gas pressure regulating cabinet provided in the embodiment of the present application, the multiple monitoring modules include at least one pressure monitoring module, at least one differential pressure monitoring module, at least one temperature monitoring module, at least one flow monitoring module, at least one emergency shut-off valve monitoring module, at least one cabinet door switch monitoring module and at least one combustible gas monitoring module.

[0015] In one possible implementation, in the digital monitoring system of the gas pressure regulating cabinet provided in an embodiment of the present application, the multiple monitoring modules are connected to the display control module through a protocol bus interface; the protocol bus interface adopts a 5-core wire design, of which 2 cores are used for power supply, 1 core is used to control communication enable, and 2 cores are used for communication.

[0016] In a possible implementation, in the digital monitoring system for the gas pressure regulating cabinet provided in the embodiment of the present application, the two cores used for communication in the protocol bus interface support RS485 communication and IIC communication respectively.

[0017] In one possible implementation, in the digital monitoring system for the gas pressure regulating cabinet provided in the embodiment of the present application, the main monitoring unit and the multiple sub-monitoring units are communicatively connected via an NBiot module, a 4G module, or a 5G module.

[0018] A second aspect of the present application provides a digital monitoring method for a gas pressure regulating cabinet, which is applied to the digital monitoring system for a gas pressure regulating cabinet according to the first aspect. The method comprises:

[0019] Each sub-monitoring unit monitors the gas pressure regulating cabinet where it is located, collects monitoring data, and sends the monitoring data to the main monitoring unit according to a preset period;

[0020] The main monitoring unit generates a monitoring result according to the received monitoring data from each gas pressure regulating cabinet, and the monitoring result includes status information of each gas pressure regulating cabinet.

[0021] In one possible implementation, the digital monitoring method for a gas pressure regulating cabinet provided in the embodiment of the present application further includes:

[0022] In each sub-monitoring unit, the display control module collects the monitoring data corresponding to each monitoring module in turn;

[0023] If the monitoring data corresponding to the current monitoring module meets the alarm condition but does not meet the filtering condition, an event data is generated and stored in the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds the preset time difference threshold, all event data in the event buffer are sent to the main monitoring unit together; if the time difference does not exceed the preset time difference threshold, the data collection of the next monitoring module is continued; the preset time difference threshold is the time for the display control module to collect all monitoring modules once;

[0024] The main monitoring unit generates alarm information based on the event data received from each gas pressure regulating cabinet.

[0025] In one possible implementation, in the digital monitoring method for the gas pressure regulating cabinet provided in the embodiment of the present application, the display control module sequentially collects monitoring data corresponding to each monitoring module, including:

[0026] The display control module controls the communication enable of the current monitoring module, so that after the current monitoring module detects that the communication is enabled, it cancels the low power consumption mode and enters the collection mode, and stores the collected monitoring data into the cache;

[0027] The display control module sends a read data command to the current monitoring module, so that the current monitoring module sends the cached data to the display control module after receiving the read data command;

[0028] After the display control module stores the received monitoring data, it turns off the communication enable of the current monitoring module, and the current monitoring module enters a low power consumption mode;

[0029] The process continues in this way until the display control module has read all the monitoring modules in the configuration.

[0030] Compared with the prior art, this application has the following beneficial effects:

[0031] The digital monitoring system for gas pressure regulating cabinets provided by the present application includes a main monitoring unit and multiple sub-monitoring units. The main monitoring unit is arranged at the main monitoring station, and the multiple sub-monitoring units are arranged in sequence at each gas pressure regulating cabinet along the gas pipeline, and each sub-monitoring unit is respectively communicated with the main monitoring unit; the sub-monitoring unit is used to monitor the gas pressure regulating cabinet where it is located, collect monitoring data, and send the monitoring data to the main monitoring unit according to a preset period; the main monitoring unit is used to generate monitoring results based on the monitoring data received from each gas pressure regulating cabinet, and the monitoring results include status information of each gas pressure regulating cabinet. Compared with the existing technology, the present application can monitor the gas pressure regulating cabinets on the gas pipeline in real time at the main monitoring station, without the need for line patrol personnel to check the gas pressure regulating cabinets every day. Therefore, once a leak occurs, it can be discovered in the first time, the alarm response is fast, and the power consumption is low, the data transmission volume is small, and the data integrity is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0033] Figure 1 A schematic diagram of a digital monitoring system for a gas pressure regulating cabinet provided by the present application is shown;

[0034] Figure 2 A schematic diagram of another digital monitoring system for gas pressure regulating cabinets provided by the present application is shown;

[0035] Figure 3 A schematic diagram of a sub-monitoring unit provided in this application is shown;

[0036] Figure 4 A schematic diagram of a specific digital monitoring system for a gas pressure regulating cabinet provided by the present application is shown;

[0037] Figure 5 A flow chart of a digital monitoring method for a gas pressure regulating cabinet provided by the present application is shown;

[0038] Reference numerals:

[0039] 100. Main monitoring unit; 200. Sub-monitoring unit; 300. Communication terminal; 210. Display control module; 220. Monitoring module; 21. First pressure monitoring module; 22. Second pressure monitoring module; 23. Differential pressure monitoring module; 24. First temperature monitoring module; 25. Second temperature monitoring module; 26. Flow monitoring module; 27. Emergency shut-off valve monitoring module; 28. First cabinet door switch monitoring module; 29. Second cabinet door switch monitoring module; 30. Combustible gas monitoring module. DETAILED DESCRIPTION

[0040] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this application belongs.

[0042] In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0043] Example 1

[0044] Figure 1 A schematic diagram of a digital monitoring system for a gas pressure regulating cabinet provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the monitoring system includes a main monitoring unit 100 and multiple sub-monitoring units 200. The main monitoring unit 100 is arranged in the main monitoring station, and the multiple sub-monitoring units 200 are arranged in sequence in each gas pressure regulating cabinet along the gas pipeline. Each sub-monitoring unit 200 is respectively communicated with the main monitoring unit 100.

[0045] Optionally, the main monitoring unit 100 and the multiple sub-monitoring units 200 can be communicatively connected via an NBiot module, a 4G module, or a 5G module.

[0046] The sub-monitoring unit 200 is used to monitor the gas pressure regulating cabinet where it is located, collect monitoring data, and send the monitoring data to the main monitoring unit according to a preset period; the main monitoring unit 100 is used to generate monitoring results based on the monitoring data received from each gas pressure regulating cabinet, and the monitoring results include status information of each gas pressure regulating cabinet.

[0047] Specifically, the monitoring data of the gas pressure regulating cabinet may include pressure value, differential pressure value, temperature value, flow value, combustible gas concentration value, shut-off valve status, cabinet door switch status, etc.

[0048] In this application, each sub-monitoring unit 200 transmits monitoring data to the main monitoring unit 100 at a preset period. The main monitoring unit 100 determines the status of each gas pressure regulating cabinet based on the monitoring data of each gas pressure regulating cabinet, thereby obtaining status information for each gas pressure regulating cabinet. This eliminates the need for line patrol personnel to check the gas pressure regulating cabinets daily. For example, if one or more of the monitoring data are abnormal, the gas pressure regulating cabinet is judged to be abnormal; if all the monitoring data are normal, the gas pressure regulating cabinet is judged to be normal.

[0049] The preset period refers to the data upload interval, which can be set to 1 hour, for example.

[0050] Please refer to Figure 2 In some embodiments of the present application, the digital monitoring system for gas pressure regulating cabinets may further include at least one communication terminal 300, which is communicatively connected to the main monitoring unit 100 and may be a mobile phone, tablet computer, or PC. The main monitoring unit 100 is further configured to transmit the monitoring results of the sub-monitoring units 200 to the at least one communication terminal 300, that is, to transmit the status information of each gas pressure regulating cabinet to the communication terminal 300, so that the user can view the status information of each gas pressure regulating cabinet on the communication terminal 300 in a timely manner.

[0051] In practical applications, the main monitoring unit can be a server. After receiving the monitoring data uploaded by the sub-monitoring units, the server compares the monitoring data with the system configuration parameter values and issues corresponding alarms, warnings, and reminders based on the system configuration parameter values. The communication terminal displays the alarm content, warning content, reminder content, and sound prompts. At the same time, the server is also responsible for issuing parameter configuration data, including the data collection interval and reporting interval of the sub-monitoring units. The sub-monitoring units receive the parameter configuration data issued by the server and configure themselves accordingly.

[0052] Please refer to Figure 3In some embodiments of the present application, the sub-monitoring unit 200 may include a display control module 210 and multiple monitoring modules 220 connected to the display control module 210. The multiple monitoring modules 220 may include at least one pressure monitoring module, at least one differential pressure monitoring module, at least one temperature monitoring module, at least one flow monitoring module, at least one emergency shut-off valve monitoring module, at least one cabinet door switch monitoring module, and at least one combustible gas monitoring module.

[0053] Specifically, the multiple monitoring modules are connected to the display control module 210 via a protocol bus interface; the protocol bus interface adopts a 5-core design, of which 2 cores are used for power supply, 1 core is used to control communication enable, and 2 cores are used for communication. The 2 cores used for communication in the protocol bus interface support RS485 communication and IIC communication respectively.

[0054] Specifically, the display control module 210 of each sub-monitoring unit 200 is used to power other monitoring modules 220. The display control module 210 uses the internal battery when there is no external power supply. When there is external power supply, the internal battery is not used and the internal battery is not rechargeable. The display control module 210 can read data from other monitoring modules, configure parameters of other monitoring modules, control other monitoring modules to enter power saving mode, and control other monitoring modules to collect monitoring data.

[0055] Each module in the above-mentioned sub-monitoring unit is specially designed for low power consumption. In typical applications, it can be used for more than 3 years without external power supply. When using external power supply, it can be connected to traditional 4-20Ma pressure transmitters, temperature transmitters, differential pressure transmitters, combustible gas transmitters and general transmitters with an output of 4-20Ma.

[0056] The display control module 210 receives a configuration file from the main monitoring unit 100 and configures each monitoring module 220. This configuration file includes the interval and type of data read for each monitoring module, as well as the corresponding low threshold, low alarm enable, low alarm filter conditions, high threshold, high alarm enable, high alarm filter conditions, high-high threshold, high-high alarm enable, and high-high alarm filter conditions. The high-high alarm filter conditions include the continuous masking time (CT) and the continuous masking slope (CK). These filters prevent duplicate alarms, reduce communication times, and lower power consumption.

[0057] The continuous shielding time (CT) indicates that no more alarms are triggered within a certain period of time after an alarm is triggered. The continuous shielding slope (CK) indicates that no more alarms are triggered when the rate of change of the monitored data after an alarm is less than the rate threshold, for example, a temperature change rate of less than 1 degree Celsius per second.

[0058] It is worth mentioning that the display control module 210 can be provided with a large-capacity storage unit, which can store the monitoring data of the latest year and view the historical data through buttons and screen.

[0059] The monitoring module 220 is connected to the display control module 210 through a protocol bus interface. The display control module 210 configures the communication interface through a dial switch. A typical display control module 210 has 16 protocol bus interfaces, which can be expanded to a maximum of 256 protocol bus interfaces. The channels here are also called channels.

[0060] Therefore, the display control module 210 can also be expanded to access other monitoring modules, which only needs to be compatible with the protocol bus interface of this system. There is no need to change the hardware, only software configuration or software upgrade is needed to support it.

[0061] The display control module 210 is used to sequentially collect monitoring data corresponding to each of the monitoring modules. If the monitoring data corresponding to the current monitoring module meets the alarm condition but does not meet the filtering condition, an event data is generated and stored in the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds a preset time difference threshold, all event data in the event buffer are sent to the main monitoring unit 100 together; if the time difference does not exceed the preset time difference threshold, data collection of the next monitoring module is continued; the preset time difference threshold is the time for the display control module to collect data from all monitoring modules once;

[0062] The main monitoring unit 100 is further configured to generate alarm information based on the event data received from each gas pressure regulating cabinet, and then send the alarm information to the communication terminal 300 so that the user can be notified of the alarm information in a timely manner.

[0063] For ease of understanding, Figure 4 A specific schematic diagram of the digital monitoring system for gas pressure regulating cabinet is given, such as Figure 4 As shown, the sub-monitoring unit 200 includes a display control module 210, a first pressure monitoring module 21, a second pressure monitoring module 22, a differential pressure monitoring module 23, a first temperature monitoring module 24, a second temperature monitoring module 25, a flow monitoring module 26, an emergency shut-off valve monitoring module 27, a first cabinet door switch monitoring module 28, a second cabinet door switch monitoring module 29, a combustible gas monitoring module 30, and three communication terminal devices 300.

[0064] based on Figure 4 The digital monitoring system of the gas pressure regulating cabinet shown in the figure has the following specific monitoring steps:

[0065] S1: Configure the data collection order for the display control module 210. The specific order is: pressure monitoring module 21, pressure monitoring module 22, differential pressure monitoring module 23, temperature monitoring module 24, temperature monitoring module 25, flow monitoring module 26, emergency shut-off valve monitoring module 27, cabinet door switch monitoring module 28, cabinet door switch monitoring module 29, and combustible gas monitoring module 30. Configure the data collection interval for the display control module 210 to be 1 minute and the data upload interval to be 1 hour. At this time, the display control module 210 will collect 60 data and upload them.

[0066] S2: After the configuration is successful, the display control module 210 controls the communication enable of the pressure monitoring module 21. After the pressure monitoring module 21 detects the control enable, it cancels the low power mode and enters the acquisition mode, starts to collect pressure value data, and puts the collected data into the cache. The display control module 210 controls the sending of the read data command. After the pressure monitoring module 21 receives the read data command, it sends the cached data to the display control module 210. After the display control module 210 stores the received data, it turns off the control enable and then compares it with the alarm threshold. If it does not meet the alarm condition, the display control module 210 controls the communication enable of the pressure monitoring module 22. After the pressure monitoring module 22 detects the control enable, it cancels the low power mode and enters the acquisition mode, collects the pressure value data again, and puts the collected data into the cache. The display control module 210 controls the sending of the read data command. According to the command, after receiving the read data command, the pressure monitoring module 22 sends the cached data to the display control module 210. The display control module 210 stores the received data, turns off the control enable, and then compares it with the alarm threshold. If the alarm condition is not met, the display control module 210 continues to collect data from the next monitoring module, and so on until the data of the combustible gas monitoring module 30 is collected. The display control module 210 enters the low power mode and enters the working mode after 1 minute. The display control module 210 first collects the monitoring data of the pressure monitoring module 21, and then collects the monitoring data of the pressure monitoring module 22. After collecting the data of the combustible gas monitoring module 30, it enters the low power mode and enters the working mode after 1 minute. After collecting 60 times, the display control module 210 compresses the monitoring data and uploads it to the main monitoring unit 100. By compressing the cache of the monitoring data, the display control module 210 reduces the amount of data transmission while ensuring the integrity of the monitoring data.

[0067] based on Figure 4 The digital monitoring system of the gas pressure regulating cabinet shown in the figure has another specific monitoring step as follows:

[0068] S10: Configure the data collection sequence for the display control module 210. The specific order is: pressure monitoring module 21, pressure monitoring module 22, differential pressure monitoring module 23, temperature monitoring module 24, temperature monitoring module 25, flow monitoring module 26, emergency shut-off valve monitoring module 27, cabinet door switch monitoring module 28, cabinet door switch monitoring module 29, and combustible gas monitoring module 30. The data collection interval for the display control module 210 is configured to be 1 minute, and the data upload interval is 1 hour. At this time, the display control module 210 will collect 60 data and upload them.

[0069] S2: After successful configuration, the display control module 210 controls the communication enable of the pressure monitoring module 21. After the pressure monitoring module 21 detects the control enable, it cancels the low power consumption mode and enters the acquisition mode to collect pressure value data and put the collected data into the cache. The display control module 210 controls the sending of the read data command. After the pressure monitoring module 2 receives the read data command, it sends the cached data to the display control module 210. If the display control module 210 does not receive the data, it will try to send the read data command again and retry up to 3 times. After the display control module 210 stores the received data, it turns off the control enable and then compares it with the alarm threshold. If it meets the alarm condition, it performs the filtering condition judgment. If the filtering condition is not met, an event data is generated and the event data is put into the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds the preset time difference threshold, when the time difference exceeds the preset time difference threshold T, all events in the event buffer are immediately sent to the main monitoring unit 100. If it does not exceed the set threshold T, the data collection of the next monitoring module continues.

[0070] S3: The display control module 210 controls the communication enable of the pressure monitoring module 22. After the pressure monitoring module 22 detects the control enable, it cancels the low power consumption mode and enters the acquisition mode, collects the pressure value data again, and puts the collected data into the cache. The display control module 210 controls the sending of the read data command. After receiving the read data command, the pressure monitoring module 22 sends the cached data to the display control module 210. After the display control module 210 stores the received data, it turns off the control enable and then compares it with the alarm threshold. If the alarm condition is met, the filtering condition is judged. If the filtering condition is not met, an event data is generated and the event data is put into the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds the preset time difference threshold, when the time difference exceeds the preset time difference threshold T, all events in the event buffer are immediately sent to the main monitoring unit 100. If it does not exceed the set threshold T, the data collection of the next monitoring module continues, and so on until the combustible gas monitoring module 30 is collected. Under normal circumstances, the time for collecting data for a monitoring module will not exceed 200ms. The threshold T is the time for collecting data for all monitoring modules once. There are 10 monitoring modules here, and the threshold T is set to 2 seconds. When the data of all monitoring modules meet the alarm conditions, the display control module 210 may generate 10 event data. The display control module 210 periodically calculates the difference between the time of the first event data in the event buffer and the current time. When the event difference is greater than the threshold T, the time from the first event is about 2 seconds. The display control module 210 sends all event data to the main monitoring unit 100. The main monitoring unit 100 system alarms and notifies the communication terminal 300.

[0071] In this application, the entire monitoring system has relatively low power consumption during data collection and data storage, and the power consumption during data transmission is the highest. At all other times, it is in low-power mode. This method greatly reduces the frequency of data transmission and the working time of the equipment in high power consumption. When the collected data value meets the alarm condition, the system can also respond quickly and send the monitoring data to the main monitoring unit and communication terminal in a timely manner, ensuring the timeliness of the system and increasing the battery life.

[0072] Example 2

[0073] See also Figure 5 The present application provides a digital monitoring method for a gas pressure regulating cabinet, comprising:

[0074] S101: Each sub-monitoring unit monitors the gas pressure regulating cabinet where it is located, collects monitoring data, and sends the monitoring data to the main monitoring unit according to a preset period;

[0075] S102: The main monitoring unit generates a monitoring result according to the received monitoring data from each gas pressure regulating cabinet, where the monitoring result includes status information of each gas pressure regulating cabinet.

[0076] In some embodiments of the present application, the method further comprises:

[0077] In each sub-monitoring unit, the display control module collects the monitoring data corresponding to each monitoring module in turn;

[0078] If the monitoring data corresponding to the current monitoring module meets the alarm condition but does not meet the filtering condition, an event data is generated and stored in the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds the preset time difference threshold, all event data in the event buffer are sent to the main monitoring unit together; if the time difference does not exceed the preset time difference threshold, the data collection of the next monitoring module is continued; the preset time difference threshold is the time for the display control module to collect all monitoring modules once;

[0079] The main monitoring unit generates alarm information based on the event data received from each gas pressure regulating cabinet.

[0080] In some embodiments of the present application, the step of sequentially collecting monitoring data corresponding to each monitoring module by the display control module specifically includes:

[0081] The display control module controls the communication enable of the current monitoring module, so that after the current monitoring module detects that the communication is enabled, it cancels the low power consumption mode and enters the collection mode, and stores the collected monitoring data into the cache;

[0082] The display control module sends a read data command to the current monitoring module, so that the current monitoring module sends the cached data to the display control module after receiving the read data command;

[0083] After the display control module stores the received monitoring data, it turns off the communication enable of the current monitoring module, and the current monitoring module enters a low power consumption mode;

[0084] The process continues in this way until the display control module has read all the monitoring modules in the configuration.

[0085] The digital monitoring method for gas pressure regulating cabinets provided in the embodiment of the present application can perform real-time monitoring of the gas pressure regulating cabinets on the gas pipeline at the main monitoring station, without the need for line patrol personnel to check the gas pressure regulating cabinets every day. Therefore, once a leak occurs, it can be discovered in the first time, the alarm response is fast, and the power consumption is low, the data transmission volume is small, and the data integrity is high.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the present application.

Claims

1. A digital monitoring system for a gas pressure regulating cabinet, characterized in that: include: A main monitoring unit and multiple sub-monitoring units, wherein the main monitoring unit is arranged at the main monitoring station, and the multiple sub-monitoring units are sequentially arranged in each gas pressure regulating cabinet along the gas pipeline, and each sub-monitoring unit is respectively communicated with the main monitoring unit; The sub-monitoring unit is used to monitor the gas pressure regulating cabinet where it is located, collect monitoring data, and send the monitoring data to the main monitoring unit according to a preset period; the sub-monitoring unit specifically includes: a display control module and multiple monitoring modules connected to the display control module; The multiple monitoring modules include at least one pressure monitoring module, at least one differential pressure monitoring module, at least one temperature monitoring module, at least one flow monitoring module, at least one emergency shut-off valve monitoring module, at least one cabinet door switch monitoring module and at least one combustible gas monitoring module; The display control module is used to collect the monitoring data corresponding to each of the monitoring modules in sequence. If the monitoring data corresponding to the current monitoring module meets the alarm condition but does not meet the filtering condition, an event data is generated and stored in the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds a preset time difference threshold, all the event data in the event buffer are sent to the main monitoring unit together; if the time difference does not exceed the preset time difference threshold, the data collection of the next monitoring module is continued; the preset time difference threshold is the time for the display control module to collect all the monitoring modules once; The main monitoring unit is used to generate monitoring results based on the monitoring data received from each gas pressure regulating cabinet, and the monitoring results include status information of each gas pressure regulating cabinet; the main monitoring unit is also used to generate alarm information based on the event data received from each gas pressure regulating cabinet.

2. The digital monitoring system for gas pressure regulating cabinet according to claim 1 is characterized in that: The system further comprises at least one communication terminal; The main monitoring unit is further configured to send the monitoring result to the at least one communication terminal.

3. The digital monitoring system for gas pressure regulating cabinet according to claim 1 is characterized in that: The multiple monitoring modules are connected to the display control module via a protocol bus interface; the protocol bus interface adopts a 5-core wire design, wherein 2 cores are used for power supply, 1 core is used for controlling communication enable, and 2 cores are used for communication.

4. The digital monitoring system for gas pressure regulating cabinet according to claim 3 is characterized in that: The two cores used for communication in the protocol bus interface support RS485 communication and IIC communication respectively.

5. The digital monitoring system for gas pressure regulating cabinet according to claim 1 is characterized in that: The main monitoring unit and the multiple sub-monitoring units are communicatively connected via an NBiot module, a 4G module or a 5G module.

6. A digital monitoring method for a gas pressure regulating cabinet, characterized in that: Applied to the digital monitoring system for a gas pressure regulating cabinet according to any one of claims 1 to 5, the method comprises: Each sub-monitoring unit monitors the gas pressure regulating cabinet where it is located, collects monitoring data, and sends the monitoring data to the main monitoring unit according to a preset period; The main monitoring unit generates a monitoring result based on the monitoring data received from each gas pressure regulating cabinet, wherein the monitoring result includes status information of each gas pressure regulating cabinet; In each sub-monitoring unit, the display control module sequentially collects monitoring data corresponding to each monitoring module; each monitoring module includes at least one pressure monitoring module, at least one differential pressure monitoring module, at least one temperature monitoring module, at least one flow monitoring module, at least one emergency shut-off valve monitoring module, at least one cabinet door switch monitoring module and at least one combustible gas monitoring module; If the monitoring data corresponding to the current monitoring module meets the alarm condition but does not meet the filtering condition, an event data is generated and stored in the event buffer. The difference between the storage time of the first event data in the event buffer and the current time is calculated. When the time difference exceeds the preset time difference threshold, all event data in the event buffer are sent to the main monitoring unit together; if the time difference does not exceed the preset time difference threshold, the data collection of the next monitoring module is continued; the preset time difference threshold is the time for the display control module to collect all monitoring modules once; The main monitoring unit generates alarm information based on the event data received from each gas pressure regulating cabinet.

7. The digital monitoring method for a gas pressure regulating cabinet according to claim 6, characterized in that: The display control module collects monitoring data corresponding to each monitoring module in sequence, including: The display control module controls the communication enable of the current monitoring module, so that after the current monitoring module detects that the communication is enabled, it cancels the low power consumption mode and enters the collection mode, and stores the collected monitoring data into the cache; The display control module sends a read data command to the current monitoring module, so that the current monitoring module sends the cached data to the display control module after receiving the read data command; After the display control module stores the received monitoring data, it turns off the communication enable of the current monitoring module, and the current monitoring module enters a low power consumption mode; The process continues in this way until the display control module has read all the monitoring modules in the configuration.

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