CN113791176A - Method and system for monitoring gas in switch cabinet - Google Patents
Method and system for monitoring gas in switch cabinet Download PDFInfo
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
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- G01R31/1281—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention relates to a method and a system for monitoring gas in a switch cabinet. The system comprises: the gas sensor network nodes are distributed at the positions of the gas concentration to be monitored in the switch cabinet to be monitored; the monitoring substation is positioned in the communication range of the gas sensor network node and is in communication connection with the gas sensor network node; each monitoring substation corresponds to at least one switch cabinet and is in wireless communication with a gas sensor network node in the at least one switch cabinet; and the monitoring center is in communication connection with at least one monitoring substation, and collects and processes the gas concentration information in the corresponding switch cabinet from the monitoring substation. According to the system and the method for monitoring the gas in the switch cabinet, the concentration of the gas generation position can be obtained by arranging the plurality of gas sensor network nodes at the positions of the gas concentration to be monitored in the switch cabinet, and the real conditions of the gas concentrations at different positions are obtained.
Description
Technical Field
The invention relates to the technical field of power device detection, in particular to a method and a system for monitoring gas in a switch cabinet.
Background
A switchgear is an important electrical device on a power distribution network, and includes some disconnectors, busbars, insulators, circuit breakers and some related protection facilities inside the switchgear. If an accident occurs to the switch cabinet, other important equipment can be damaged, and the power failure accident is more likely to be caused.
The main factors influencing the safety of the switchgear cabinet are partial discharges and partial overheating. Partial discharge and local overheating will cause the organic insulating material and the gaseous insulating medium to decompose and to undergo a series of complex chemical reactions with trace amounts of oxygen and moisture inside the device. These decomposition products may corrode conductors and insulation materials inside the equipment, accelerating the degradation process of the insulation materials. If the generation characteristics of the components of the gas decomposition product, such as the component types, concentrations, generation rates and the like, can be detected and analyzed effectively in time, the fault can be solved in time or found in advance, and the fault can be prevented in the bud.
The traditional switch cabinet gas detection technology is that a gas guide pipe is introduced into a ventilation position of a switch cabinet or a cabinet body, gas in the switch cabinet is led out through the guide pipe, and then different detection is carried out on the led gas by using a sensor or other instruments. The disadvantage is firstly that the gas diffuses from a high concentration to a low concentration, the gas which is discharged via the line is not the mean concentration of the gas at the location of the fault or in the switchgear cabinet, and the measured fault gas discharge concentration deviates considerably from the actual fault gas concentration in the switchgear cabinet. Secondly, because the density of each gas is different, the concentration of different types of gases in different places in the switch cabinet is different, and the derived detection can only take the gas in one area, but can not detect most areas. Thirdly, the average value obtained by collecting the derived gas for a plurality of times of concentration has errors, and the actual situation in the switch cabinet cannot be reflected. Fourthly, the traditional detection method cannot obtain the real-time gas concentration in the switch cabinet, cannot judge whether the interior of the switch cabinet is in a fault stage, and is not beneficial to studying and judging the gas concentration trend.
Disclosure of Invention
Therefore, it is necessary to provide a method and a system for monitoring gas in a switch cabinet, aiming at the problems caused by the conventional method of detecting after gas is discharged.
An in-cabinet gas monitoring system, the monitoring system comprising:
the gas sensor network nodes are distributed at the positions of the gas concentration to be monitored in the switch cabinet to be monitored;
the monitoring substation is positioned in the communication range of the gas sensor network node and is in communication connection with the gas sensor network node; each monitoring substation corresponds to at least one switch cabinet and is in wireless communication with a gas sensor network node in the at least one switch cabinet;
and the monitoring center is in communication connection with at least one monitoring substation, and collects and processes the gas concentration information in the corresponding switch cabinet from the monitoring substation.
In one embodiment, the gas sensor network node comprises:
the gas sensor is used for detecting gas and converting the gas into an electric signal;
the microprocessor is electrically connected with the gas sensor and converts the electric signal of the gas sensor into gas concentration data;
the wireless communication module is electrically connected with the microprocessor and used for sending the gas concentration data to the monitoring substation;
and the power supply is respectively electrically connected with the gas sensor, the microprocessor and the wireless communication module and is used for providing working voltage for the gas sensor, the microprocessor and the wireless communication module.
In one embodiment, the monitoring substation comprises:
the monitoring mainboard comprises a daughter board interface module; the monitoring mainboard is used for processing and controlling data of the monitoring substation;
and the monitoring daughter board is connected with the daughter board interface module on the monitoring mainboard and is used for communicating with the plurality of gas sensor network nodes.
In one embodiment, the monitoring motherboard further includes:
the main control module is used for storing and processing data;
the communication module is electrically connected with the main control module and comprises at least one of a wifi communication module, an asynchronous communication module and an Ethernet communication module;
and the power supply module is used for supplying power to the main control module, the communication module and the daughter board interface module.
In one embodiment, the gas sensor is a carbon monoxide type sensor or a nitric oxide type sensor.
In one embodiment, the monitoring daughter board and the gas sensor network node communicate with each other by using a Zigbee protocol.
In one embodiment, the monitoring substations and the gas sensor network nodes form a star network therebetween; a plurality of monitoring substations form an ad hoc network therebetween.
In one embodiment, the monitoring center is used for realizing at least one of user login, monitoring parameter setting, gas concentration display, historical data query and early warning functions.
A method for monitoring gas in a switch cabinet is based on the monitoring system and comprises the following steps:
after the system initialization is completed, the gas sensor network node collects gas concentration data in a switch cabinet according to a set period and transmits the gas concentration data to the monitoring substation;
the monitoring substation collects gas concentration data from a plurality of gas sensor network nodes and then sends the collected gas concentration data to the monitoring center;
and the monitoring center outputs a gas concentration monitoring result according to a set rule.
In one embodiment, the monitoring center further performs at least one of the following processes for a command generated by interacting with the monitoring center:
starting or suspending gas concentration collection;
setting monitoring parameters;
and querying historical data.
According to the system and the method for monitoring the gas in the switch cabinet, a plurality of gas sensor network nodes are arranged at the positions of the gas concentration to be monitored in the switch cabinet, and the gas sensor network nodes are in wireless communication with the monitoring substations to transmit the gas concentration data to the monitoring center for storage and processing. The concentration of the gas generation position can be obtained, and the actual situation of obtaining the gas concentrations at different positions is realized. By collecting the gas concentration on a periodic basis, the real-time nature of the data can be substantially guaranteed. The storage and the summarization of the data can be further used for analyzing the gas concentration variation trend.
Drawings
FIG. 1 is a diagram of an embodiment of a system for monitoring gases within a switchgear enclosure;
FIG. 2 is a block diagram of a node of the gas sensor network of FIG. 1;
FIG. 3 is a block diagram of the gas monitoring sub-station shown in FIG. 1
Fig. 4 is a flowchart of a method for monitoring gas in a switch cabinet according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on methods or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Fig. 1 is a structural diagram of a gas monitoring system in a switch cabinet according to an embodiment. The monitoring system comprises a gas sensor network node 100, a monitoring substation 200 and a monitoring center 300. The number of the gas sensor network nodes 100 is plural, and the gas sensor network nodes are distributed at positions of the gas concentration to be monitored in the switch cabinet 900 to be monitored. For example, the gas sensor network node 100 may be located in the center of the top, the center of the bottom, and the center of the surrounding inner walls within the switchgear 900, or other locations where it is easy to monitor the decomposition of the insulating material to generate gas. The monitoring substation 200 is located in the communication range of the gas sensor network node 100 and is in communication connection with the gas sensor network node 100; each monitoring substation 200 corresponds to at least one switch cabinet 900 and wirelessly communicates with a gas sensor network node in the at least one switch cabinet 900. In some embodiments, each switchgear 900 may itself become a monitoring substation 200. The monitoring center 300 is in communication connection with at least one monitoring substation 200, and collects and processes the gas concentration information in the corresponding switch cabinet 900 from the monitoring substation 200. The sink nodes of each monitoring substation 200 are connected to the monitoring gateway through the ethernet, and package data through the monitoring gateway, and transmit the data to the monitoring center 300. The monitoring center 300 may also send data to various terminals, such as a PC terminal or a mobile phone terminal, through a cloud network.
According to the gas monitoring system in the switch cabinet, the plurality of gas sensor network nodes are arranged at the positions of the gas concentration to be monitored in the switch cabinet, and the gas monitoring system and the monitoring substation are in wireless communication to transmit the gas concentration data to the monitoring center for storage and processing. The concentration of the gas generation position can be obtained, and the actual situation of obtaining the gas concentrations at different positions is realized. By collecting the gas concentration on a periodic basis, the real-time nature of the data can be substantially guaranteed. The storage and the summarization of the data can be further used for analyzing the gas concentration variation trend.
As shown in fig. 2, in one embodiment, the gas sensor network node 100 includes: a gas sensor 102, a microprocessor 104, a wireless communication module 106, and a power supply 108. The gas sensor 102 is used to detect gas and convert it into an electrical signal. The gas sensor 102 may be a carbon monoxide (CO) type sensor or a Nitric Oxide (NO) type sensor. The microprocessor 104 is electrically connected to the gas sensor 102 and converts the electrical signal from the gas sensor 102 into gas concentration data. Since the microprocessor 104 only plays a role in transmission in the gas sensor network node 100, an STM32 motherboard microprocessor with low power consumption and excellent energy saving can be selected. The wireless communication module 106 is electrically connected with the microprocessor 104 and is used for sending the gas concentration data to the monitoring substation 200; the wireless communication module 106 may select a wireless communication product model CC 2530. The CC2530 integrates a single chip microcomputer, an ADC (analog-to-digital conversion) module and a wireless communication module, so that the reliability of the gas sensor network node 100 is greatly improved, and the volume and the quality are reduced. The power supply 108 is electrically connected to the gas sensor 102, the microprocessor 104 and the wireless communication module 106, respectively, and is used for providing an operating voltage for the gas sensor 102, the microprocessor 104 and the wireless communication module 106. Because the cubical switchboard space is limited, need carry out the installation of gas sensor network node 100 simultaneously, so power 108 can select button lithium cell, conveniently installs the power supply to it.
In order to realize the online monitoring of the gas concentration, a T-MAC protocol is selected as an MAC protocol of a wireless sensor network. The T-MAC protocol may divide time into frames, which are fixed in length. The T-MAC protocol defines a timer TA, from which the end time of the listening session is determined. By recording every fixed time (for example, 5 minutes), the concentration of the fault gas in the switch cabinet can be periodically monitored. The routing protocol of the wireless sensor network can select a Direct Diffusion (DD) protocol, and the DD protocol has the greatest characteristic of introducing the concept of network gradient, is used for communication based on data, is a protocol with high energy efficiency, and is suitable for continuous query. By setting up the MAC protocol and the routing protocol, the fault gas concentration data within the switchgear 900 can be transmitted in real time, with low delay and high efficiency.
As shown in fig. 3, in one embodiment, the monitoring substation 200 includes a monitoring motherboard 202 and a monitoring daughter board 204. The monitor motherboard 202 includes a daughter board interface module 206; the monitoring mainboard 202 is used for processing and controlling data of the monitoring substation; the monitor daughter board 204 interfaces with a daughter board interface module 206 on the monitor motherboard for communication with the plurality of gas sensor network nodes 100. The monitoring motherboard 202 further includes a main control module 208 for storing and processing data. Wherein, a Microprocessor (MCU) can be adopted to process data and a storage module is adopted to store data. The MCU is used as an embedded chip, and can realize that the working current and the working voltage (3A, 5V) are relatively small under the condition of certain processing capacity (such as 400 MHz). The storage module can comprise a random access memory such as SDRAM and a nonvolatile memory such as Flash, and the storage capacity is determined according to the requirements of processing, transmission and storage. In the application, the requirement of real-time monitoring can be met by using 128MB of the random access memory and 32M of the nonvolatile memory. The monitoring main board 202 further includes a communication module electrically connected to the main control module 208, and the communication module includes at least one of a wifi communication module 210, an asynchronous communication module 212, and an ethernet communication module 214, so that the monitoring substation 200 can meet at least one communication requirement. The power module 216 is used to supply power to the main control module 208, the communication module, and the daughter board interface module 206.
In one embodiment, the monitoring daughter board 202 communicates with the gas sensor network node 100 using the Zigbee protocol. The Zigbee equipment cost and the energy consumption cost are both low, the bandwidth can reach 250kbit/s, scalar data transmission in a small-range network can be effectively met, and the method is very suitable for the transmission of wireless sensor data.
In one of the embodiments, the monitoring substations 200 form a star network with the gas sensor network nodes 100; a plurality of monitoring substations 200 form an ad hoc network therebetween. The monitoring substation 200 serves as a central node of the star network, and the gas sensor network nodes 100 serve as branch nodes of the star network, so that the monitoring substation 200 can collect and summarize gas concentration data acquired by at least one gas sensor network node 100. A plurality of monitoring substations 200 form an ad hoc network therebetween. The distributed control and centerless network structure can maintain the residual communication capability after a part of the communication network is damaged, and has strong robustness and survivability. As a distributed network, a mobile ad hoc network is an autonomous, multi-hop network, and the entire network has no fixed infrastructure and can provide intercommunication between terminals without utilizing or inconveniently utilizing existing network infrastructure (e.g., base stations, APs). Due to the limited transmission power and wireless coverage of the terminals, two terminals at a longer distance must perform packet forwarding by means of other nodes if communication is to be performed, so that a wireless multi-hop network is formed between the nodes. The mobile terminals in the network have routing and packet forwarding functions and can form any network topology through wireless connection. The mobile ad hoc network can be used as a single network to independently work, and can also be accessed to the existing network in the form of an end subnet, such as an Internet network and a cellular network.
In one embodiment, the monitoring center 300 is configured to perform at least one of user login, monitoring parameter setting, gas concentration display, historical data query, and early warning functions. After the user login can realize user identity authentication, corresponding functions and permissions are provided. The monitoring parameter setting comprises the steps of completely initializing system data and displaying initial various gas concentrations; setting an acquisition period; the type, position, number, etc. of opening and closing of the sensors are set. The collected data can be named by time and stored in a fixed folder, so that the data can be called conveniently. For the early warning function, by starting the fault diagnosis program, the gas sensor network node 100 starts to collect the gas concentration of the switch cabinet 900, transmits the data to the monitoring center 300 through the wireless sensor network (via the monitoring substation 200), and logically judges the data according to the preset rule. If the concentration exceeds a preset threshold value, alarming and recording alarming time, fault gas type, fault gas concentration and the like, prompting by adopting a mode of automatically popping up a warning interface and the like, displaying which type of gas exceeds the standard, and simultaneously giving an alarm to monitoring personnel to remind the switch cabinet that an abnormal phenomenon exists in the switch cabinet.
Above-mentioned gaseous monitoring system in cubical switchboard does not just can carry out the detection of trouble gas concentration with gaseous derivation in the cubical switchboard, has reduced the error nature that detects. Through the gas concentration detection to different positions in the cubical switchboard, further reduce the error that brings because of detecting. The detection of gas concentration in a plurality of switch cabinets can be simultaneously transmitted and detected, so that the one-to-one monitoring difficulty is reduced, and the management is convenient. The gas concentration of the switch cabinet can be monitored in real time, the manual work for sampling and checking the gas in the cabinet is not needed, and the waste of human resources is reduced. The mobile device can be used for carrying out detailed checking on the gas concentration curve at a long distance, and can be compared with historical concentrations, and important judgment is made through changes of gas concentration trends and comparison of threshold values.
Based on the monitoring system, an embodiment of a method for monitoring gas in a switch cabinet is also provided, as shown in fig. 4, the method may include the following steps:
s402: after the system initialization is completed, the gas sensor network node collects gas concentration data in the switch cabinet according to a set period and transmits the gas concentration data to the monitoring substation. System initialization may include establishing connections of the gas sensor network nodes 100 and the monitoring substations 200, the monitoring substations 200 forming a self-organizing network, initializing all data to be monitored, and so on.
S404: and the monitoring substation collects the gas concentration data from the plurality of gas sensor network nodes and then sends the collected gas concentration data to the monitoring center. The monitoring substation 200 collects the acquired gas concentration data of the gas sensor network nodes according to a set period, transmits the data to a remote gateway through a self-organizing network, and packs the data through the gateway and then sends the data to the monitoring center 300. The monitoring center 300 may also send data to a PC side or a mobile phone side through a cloud network.
S406: and the monitoring center outputs a gas concentration monitoring result according to a set rule. The monitoring center 300 is used for realizing at least one of the functions of user login, monitoring parameter setting, gas concentration display, historical data query and early warning.
In one embodiment, the monitoring center 300 performs at least one of the following processes for a command generated by interacting with the monitoring center: starting or suspending gas concentration collection; setting monitoring parameters; and querying historical data.
Specifically, the monitoring center 300 also provides corresponding interfaces, such as a login interface, a parameter setting interface, a data display interface, an early warning interface, a historical data query interface, and the like, when implementing corresponding functions. When using the functions of the monitoring center 300, for example, a login interface is popped up first, and four areas, namely a parameter setting interface, a data display interface, an early warning interface and a historical data query interface, are displayed after an account password is input.
Before the switch cabinet 900 works, a parameter setting interface is clicked, system data are completely initialized, and initial various gas concentrations are displayed.
In a normal state, the monitoring personnel interacting with the monitoring center 300, for example, clicking a pause button of the data display page to collect the gas concentration, will generate a corresponding instruction for controlling the gas sensor network node 100 to stop collecting the gas concentration, thereby stopping collecting the gas concentration. Clicking the exit button also generates a corresponding instruction to control the gas sensor network node 100 to stop collecting, thereby stopping collecting and storing data, and then returning to the system initial interface.
Monitoring personnel can start a fault diagnosis program, a monitoring system starts to collect the gas concentration of the switch cabinet 900, data are transmitted to a monitoring center through a wireless sensor network, and logic judgment is carried out on the data through preset rules, so that various fault detection and alarm are realized. For example, if the concentration exceeds a preset threshold, the system will alarm and record the alarm time, fault gas type, and fault gas concentration. And interactive prompt can be performed, for example, an alarm interface is automatically popped up, which type of gas exceeds the standard in concentration is displayed, and meanwhile, an alarm is given to monitoring personnel to remind the switch cabinet that an abnormal phenomenon exists.
The monitoring personnel can also click a historical data query interface to generate a query instruction, so that historical data can be obtained through query. Historical data files may be named in the format of time of acquisition (xx months xx days xx hours xx minutes xx seconds). Big data analysis can be carried out according to historical data, the trend of fault gas concentration is researched and judged, and the occurrence of faults in the switch cabinet is prevented.
In one embodiment, when the gas sensor network node 100 detects an abnormal event, it may generate an alarm packet with a high priority in time and upload the alarm packet to the monitoring center 300, and each intermediate node needs to perform priority processing and forwarding on the alarm packet.
In one embodiment, during the unmanned monitoring period, each gas sensor network node 100 periodically uploads a common data packet (i.e., collected monitoring data) to the monitoring substation 200, and the monitoring substation completes aggregation and cache processing and then transmits the data to the monitoring center 300 for storage, processing and analysis of the monitoring data. The monitoring center 300 may also be responsible for scheduling the uploading time of each monitoring substation 200 in a polling manner, so that the problem of network congestion can be effectively avoided. Each monitoring substation 200 adopts a time and event wake-up mechanism, and can keep a sleep state in the upload period interval of other monitoring substations 200 to save electric quantity.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A system for monitoring gas in a switch cabinet, the system comprising:
the gas sensor network nodes are distributed at the positions of the gas concentration to be monitored in the switch cabinet to be monitored;
the monitoring substation is positioned in the communication range of the gas sensor network node and is in communication connection with the gas sensor network node; each monitoring substation corresponds to at least one switch cabinet and is in wireless communication with a gas sensor network node in the at least one switch cabinet;
and the monitoring center is in communication connection with at least one monitoring substation, and collects and processes the gas concentration information in the corresponding switch cabinet from the monitoring substation.
2. The in-cabinet gas monitoring system of claim 1, wherein the gas sensor network node comprises:
the gas sensor is used for detecting gas and converting the gas into an electric signal;
the microprocessor is electrically connected with the gas sensor and converts the electric signal of the gas sensor into gas concentration data;
the wireless communication module is electrically connected with the microprocessor and used for sending the gas concentration data to the monitoring substation;
and the power supply is respectively electrically connected with the gas sensor, the microprocessor and the wireless communication module and is used for providing working voltage for the gas sensor, the microprocessor and the wireless communication module.
3. The in-switchgear gas monitoring system of claim 1, wherein said monitoring substation comprises:
the monitoring mainboard comprises a daughter board interface module; the monitoring mainboard is used for processing and controlling data of the monitoring substation;
and the monitoring daughter board is connected with the daughter board interface module on the monitoring mainboard and is used for communicating with the plurality of gas sensor network nodes.
4. The in-cabinet gas monitoring system of claim 3, wherein the monitoring motherboard further comprises:
the main control module is used for storing and processing data;
the communication module is electrically connected with the main control module and comprises at least one of a wifi communication module, an asynchronous communication module and an Ethernet communication module;
and the power supply module is used for supplying power to the main control module, the communication module and the daughter board interface module.
5. The in-cabinet gas monitoring system of claim 2, wherein the gas sensor is a carbon monoxide type sensor or a nitrogen monoxide type sensor.
6. The system of claim 3, wherein the monitoring daughter board communicates with the gas sensor network nodes using the Zigbee protocol.
7. The in-switch-cabinet gas monitoring system of claim 1, wherein a star network is formed between the monitoring substation and the gas sensor network nodes; a plurality of monitoring substations form an ad hoc network therebetween.
8. The system for monitoring gases within a switchgear panel as claimed in claim 1, wherein the monitoring center is configured to perform at least one of user login, monitoring parameter setting, gas concentration display, historical data query, and pre-warning functions.
9. A method for monitoring gas in a switch cabinet, which is based on the monitoring system of any one of claims 1 to 8, and comprises the following steps:
after the system initialization is completed, the gas sensor network node collects gas concentration data in a switch cabinet according to a set period and transmits the gas concentration data to the monitoring substation;
the monitoring substation collects gas concentration data from a plurality of gas sensor network nodes and then sends the collected gas concentration data to the monitoring center;
and the monitoring center outputs a gas concentration monitoring result according to a set rule.
10. The method according to claim 9, wherein the monitoring center further performs at least one of the following processes for commands generated by interaction with the monitoring center:
starting or suspending gas concentration collection;
setting monitoring parameters;
and querying historical data.
Priority Applications (1)
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