CN111290311A - System and method for monitoring effluent data after wastewater treatment - Google Patents
System and method for monitoring effluent data after wastewater treatment Download PDFInfo
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- CN111290311A CN111290311A CN202010093275.XA CN202010093275A CN111290311A CN 111290311 A CN111290311 A CN 111290311A CN 202010093275 A CN202010093275 A CN 202010093275A CN 111290311 A CN111290311 A CN 111290311A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
Abstract
The invention discloses a system and a method for monitoring effluent data after wastewater treatment, wherein the system comprises the following steps: the system comprises a plurality of annular data acquisition devices, a data processing terminal, a gateway, a cloud terminal, a data center display screen for data display, a voice alarm for prompting alarm and an intelligent terminal for subscribing data to the cloud terminal, wherein the annular data acquisition devices are used for acquiring effluent detection data of a wastewater discharge outlet; the data processing terminal is used for receiving the data acquired by the annular data acquisition device, judging whether the acquired data exceed a preset threshold value or not, and sending the analyzed data to the cloud terminal through the gateway, wherein the cloud terminal is respectively in data transmission with the data center display screen, the voice alarm and the intelligent terminal; the invention can ensure the correctness and stability of the sensor for receiving the water quality numerical data, and can inform related personnel of the alarm prompt information more quickly when abnormal conditions occur, thereby effectively improving the efficiency of information transmission.
Description
Technical Field
The invention relates to the technical field of wastewater monitoring, in particular to a system and a method for monitoring effluent data after wastewater treatment.
Background
The pollutant in the emission waste water needs to be detected in real time, if the quality of water numerical value in the pollutant exceeds standard or does not reach standard, not only violates the coal chemical industry water pollutant discharge standard, also can cause certain influence to the environment simultaneously, consequently, the quality of water numerical value that real-time supervision discharged waste water has become an indispensable ring.
In the process of sewage data detection, under the condition that more data need to be collected by the existing detection system, the types of sensors are more in requirement, and due to the limitation of the size of the sensors, part of the sensors can be installed at non-lowest points, so that when the water discharge is less, part of the sensors cannot contact with the discharged sewage, and the data is inaccurate or has no data.
The existing sewage data detection network bottom layer adopts a reliable transmission protocol (such as a TCP protocol and the like), and a packet transmission mode is also used in the network transmission process, so that when an abnormal condition occurs, the system needs to perform five steps of data acquisition, data transmission, cloud analysis, cloud processing and reminding, and the condition of large delay caused by packet data difference can be caused during data exchange of each step, so that the abnormal condition cannot be immediately found and processed.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides the system and the method for monitoring the effluent data after wastewater treatment, which can ensure the correctness and stability of the water quality numerical data received by the sensor, ensure the timeliness of data transmission and the stability of data, reduce delay, inform related personnel of alarm prompt information more quickly when abnormal conditions occur, and effectively improve the efficiency of information transmission.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a monitoring system for effluent data after wastewater treatment, which comprises: the system comprises a plurality of annular data acquisition devices, a data processing terminal, a gateway, a cloud terminal, a data center display screen, a voice alarm and an intelligent terminal;
the annular data acquisition device is connected with the data processing terminal, the data processing terminal is connected with the gateway, the gateway is in data transmission with the cloud terminal, and the cloud terminal is in data transmission with the data center display screen, the voice alarm and the intelligent terminal respectively;
the annular data acquisition device is used for acquiring effluent detection data of the wastewater discharge outlet;
the data processing terminal is used for receiving the data acquired by the annular data acquisition device, judging whether the acquired data exceed a preset threshold value or not, and sending the analyzed data to the cloud terminal through the gateway;
the data center display screen is used for displaying data, the voice alarm is used for prompting to give an alarm, and the intelligent terminal is used for subscribing data to the cloud terminal.
As the preferable technical proposal, the annular data acquisition device is provided with a plurality of groups of sensors which are connected with a data processing terminal,
the sensor comprises a COD sensor, a PH sensor, an ORP sensor, a temperature sensor and an ammonia nitrogen sensor.
As an optimized technical scheme, the annular data acquisition device adopts an arc-shaped structure, the diameter of a water outlet of the annular data acquisition device is gradually reduced along the wastewater discharge direction, and a plurality of acquisition sensors are arranged at the tail end of the water outlet of the annular data acquisition device.
As a preferable technical scheme, the data processing terminal adopts a Stm32 series single chip microcomputer.
As a preferred technical scheme, the gateways are arranged according to monitoring areas, and each gateway individually transmits the collected data of the corresponding monitoring area.
The invention also provides a method for monitoring the effluent data after wastewater treatment, which comprises the following steps:
the annular data acquisition device acquires effluent detection data of the wastewater discharge outlet and sends the effluent detection data to the data processing terminal;
the data processing terminal receives the water outlet detection data, analyzes whether the water outlet detection data exceed a preset threshold value or not, judges that the water outlet detection data exceed the preset threshold value, and sends the water outlet detection data to the gateway after marking; if the water outlet detection data does not exceed the preset threshold, storing the water outlet detection data into a temporary cache, dividing the water outlet detection data into a plurality of data points and then sending the data points to a gateway;
the gateway sends the received effluent detection data to the cloud terminal;
the cloud terminal analyzes whether the water outlet detection data exceeds a preset threshold value or not, if the water outlet detection data exceeds the preset threshold value, the data are immediately issued to a data center display screen and a voice alarm, the data center display screen displays alarm content, and the voice alarm sends alarm prompt information and then stores the alarm prompt information in a database; if the data content does not exceed the preset threshold, the data content is stored in a database, then the data is published, the data content is displayed on a data center display screen, and the intelligent terminal subscribes the data to the cloud terminal.
As a preferred technical solution, if it is determined that the water level exceeds the preset threshold, the water detection data is labeled and then sent to the gateway, and the specific steps are as follows:
and (4) sorting the water outlet detection data into a binary data packet, wherein the data packet is provided with an overrun zone bit, and marking the overrun zone bit when the overrun zone bit is judged to exceed a preset threshold value.
As a preferred technical scheme, the method further comprises a data preprocessing step, and the specific steps are as follows:
the collected effluent detection data are split and sorted according to data types, amplified through an amplifier, converted into digital signals through an analog-to-digital converter and stored in a temporary cache database.
As a preferred technical scheme, the intelligent terminal subscribes data to the cloud terminal by using an internet of things message queue telemetry transmission protocol.
As a preferred technical scheme, the intelligent terminal subscribes data to the cloud terminal, and the method specifically comprises the following steps: the intelligent terminal actively subscribes information data of the cloud terminal, the intelligent terminal and the cloud terminal establish reliable connection, when new data are released at the cloud terminal, the intelligent terminal receives a data packet reminding that the new data exist, and the intelligent terminal accesses the cloud terminal to obtain the new effective data.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) according to the invention, the annular data acquisition device is arranged at the wastewater outlet, the sensor is distributed at the narrowest end of the annular shape, the sensor can be ensured to be contacted with sewage when the water yield is low, and the problem that when the water yield is low, part of the sensor cannot be contacted with the discharged sewage to cause no data or inaccurate data is effectively avoided.
(2) According to the invention, the data processing device for processing the condition of the wastewater pollutants is arranged at the position close to the detection port instead of being transmitted back to the cloud terminal for processing, and when an abnormal condition occurs, the data processing device can immediately inform the cloud terminal and push the data to a worker, so that the delay and the data transmission amount are effectively reduced.
(3) According to the invention, the information transmission gateways are arranged according to the monitoring areas, each area independently transmits data without mutual influence, and when a certain area breaks down, other areas normally transmit data and give an abnormal alarm.
(4) The technical scheme of the sensor group is adopted on the monitoring device, so that the problem of matching of different sensors is solved; and the sensor can be moved out at any time, so that the applicability of the monitoring device and the convenience of maintaining and replacing the sensor are improved.
(5) According to the invention, the intelligent terminal actively subscribes the data of the discharge port instead of pushing the data to the intelligent terminal by the cloud terminal, and the intelligent terminal actively subscribes the data to the cloud terminal, so that the data processing pressure and the pushing pressure of the cloud terminal can be greatly reduced, the bearing capacity of the cloud terminal is effectively improved, the cloud terminal actively pushes the data to the intelligent terminal, when abnormal conditions occur, messages are required to be pushed to the intelligent terminal of a user one by one, and the data sending and processing pressure is extremely high in a short time, so that the system is easy to be unstable.
Drawings
FIG. 1 is a schematic view of a topology of a system for monitoring effluent data after wastewater treatment according to the embodiment;
FIG. 2 is a schematic diagram of the connection between the sensor and the single chip microcomputer according to the present embodiment;
FIG. 3 is a schematic structural diagram of the annular data acquisition device according to the present embodiment;
fig. 4 is a schematic flow chart of preprocessing of the sensor data collected in the embodiment.
The system comprises a 1-annular data acquisition device, a 2-first sensor group, a 3-second sensor group, a 4-third sensor group and a 5-fourth sensor group.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
As shown in fig. 1, the present embodiment provides a system for monitoring effluent data after wastewater treatment, including: the system comprises an annular data acquisition device, a data processing terminal, a 4G gateway, a cloud terminal, a data center display screen, a voice alarm and an intelligent terminal;
as shown in fig. 2, in the embodiment, an annular data acquisition device is arranged at the wastewater outlet and used for collecting the pollutant condition of wastewater at the water outlet, and the annular data acquisition device comprises a COD (chemical oxygen demand) sensor, a PH (hydrogen ion concentration index) sensor, an ORP sensor (oxidation-reduction potential on-line analyzer), a temperature sensor and an ammonia nitrogen sensor, wherein a plurality of sensors are respectively connected with different I-O interfaces of a single chip microcomputer;
as shown in fig. 1, a level signal output by each sensor in the ring data acquisition device is accessed to a data processing terminal, the data processing terminal of this embodiment adopts a Stm32 micro processing chip, every 5 ring data acquisition devices are accessed to a single chip device (data processing terminal), the single chip device performs processing of a data packet, compares data transmitted by the sensor with a preset overrun value, and determines whether the data is overrun, and if the data is overrun, the data (alarm value) is immediately sent to a gateway; if the data are not over-limit, the data are temporarily stored, the data are sent to the gateway once every ten data points, and then the temporary storage area is emptied;
in this embodiment, the sensor is a signal acquisition element, the single chip microcomputer is a data signal reading element, the sensor acquires signals and transmits the signals to the digital chip, the digital chip processes the signals into a signal mode which can be accepted by the single chip microcomputer, finally, the functions of outputting, displaying, storing, sending out an alarm signal and the like are realized through the single chip microcomputer, and the single chip microcomputer executes the processing of the water quality value and the alarm value data.
Each drainage area is provided with a gateway for sending and receiving data, the gateway of the embodiment is preferably a 4G gateway, the cloud terminal is responsible for summarizing a data packet transmitted by each area gateway and displaying the data packet to a large data center screen after being disassembled, the cloud terminal and the gateway adopt a reliable data transmission mode, the data packet is binary data, the binary data is converted into decimal content and then the data of water quality values (values of each sensor) are disassembled in sections, and then releasing the value to subscribed Toppic, and simultaneously displaying an abnormal alarm prompt and sounding a buzzer alarm to an intelligent terminal of a worker if the specified value is exceeded (COD is more than 50mg/L, ammonia nitrogen is more than 5mg/L, pH and is less than 7 or more than 8, and water temperature is more than 32 ℃ or less than 28 ℃), wherein the alarm indicates that the wastewater treatment process is not closed, and the discharge of harmful wastewater is avoided.
As shown in fig. 3, a first sensor group 2, a second sensor group 3, a third sensor group 4 and a third sensor group 5 are arranged at the tail end of a water outlet of an annular data acquisition device 1, in order to enable all sensors to contact with discharged sewage, the annular data acquisition device 1 adopts a structure of 'front and back arc-shaped' to gradually reduce the diameter of the water outlet so as to ensure that the water quality condition is not missed when the water discharge is very small, the problem of data monitoring accuracy when the water discharge is small is effectively solved by the sensor device with the arc-shaped front big front and back small sensor device and the layout, all the sensors are distributed around pipelines at two sides in front of a final water outlet, namely a final waste water outlet of the annular data acquisition device, output signal lines are converged at the top of the pipelines and are connected into a stm32 single chip microcomputer device, a data acquisition point of the embodiment is positioned at the last gateway before the coal chemical waste water is thoroughly discharged from, rather than carry out data acquisition during certain process among the waste water treatment process, leave this device back waste water and will directly get into natural environment, consequently, the authenticity of data can be guaranteed to this device and guarantee that waste water can not cause the influence to ecological environment.
In the embodiment, a data processing terminal is arranged for every five annular data acquisition devices, the data processing terminal adopts a Stm32 micro-processing chip, each type of sensor is input into a Stm32 chip through a signal conditioning and converting circuit, data processing is carried out, and then the data are sent to a 4G gateway, the data such as ammonia nitrogen amount, pH value and temperature are analyzed, and a conclusion whether the water quality value exceeds the limit is given, wherein the COD value in the water quality value is less than 50mg/L, the ammonia nitrogen content is less than 5mg/L, the pH value is between 7 and 8, the water temperature is between 28 and 32 ℃, and the limit is considered to be exceeded or is less than a set critical value; and simultaneously, sequencing the data, and then sending the data to a gateway, wherein the whole process is to amplify the original analog signal by an amplifier, convert the amplified analog signal into digital signals of a COD value, an ammonia nitrogen value, a PH value and water temperature by an analog-to-digital converter, and transmit the digital signals to a chip.
As shown in fig. 4, the operations before the sensor raw data is accessed into the processing chip are: the microchip preprocesses data, splits the received data according to the data type, mainly checks the condition of the over-limit zone bit, then stores the data in a temporary cache, checks whether the data exceeds the specified limit, and stores the data in the temporary cache, and when the data is collected for ten times, the data including ammonia nitrogen content, PH value and the like of the wastewater is sent to the 4G gateway once every 10 data points and the cache is cleared, and if the data value is higher than the set value, the data point is sent to the gateway immediately.
In this embodiment, each area is provided with a 4G gateway, the 4G gateway is connected with a processing terminal through a serial port, the 4G gateway is responsible for sending all data to a cloud terminal through a 4G network, and the cloud terminal, i.e., a server, receives information and displays the data on a large data center screen; simultaneously, whole data package is binary data when the transmission in the network, data package first order can be set to transfinite zone bit, 0 is normal, 1 is transfinites, if there is the transfinite sign in the data package, then sound the alarm immediately and remind to staff's intelligent terminal propelling movement, the 4G gateway of this embodiment all arranges one at every monitoring area, arrange the information transmission gateway according to monitoring area, every area independently carries out data transmission, each other does not influence, other areas carry out data transfer and unusual warning when certain area breaks down as usual.
Cloud terminal is as the transfer station of data summary sum data, the intelligent management of mainly used stored data and intelligent terminal software, quality of water numerical value information and alarm information that intelligent terminal received in real time can let the staff handle rapidly, realize automatic monitoring and centralized remote management, ensure that discharge waste water accords with the emission requirement, make the effect that reaches the protection environment, when receiving the data message that the 4G gateway sent, cloud terminal reads the transfinite zone bit earlier, if there is not the alarm demand then with data point storage to the database in, if there is the alarm demand, stop all storage work and show alarm information to the large screen immediately and sound voice alarm, to intelligent terminal propelling movement alarm information.
A novel 'subscription-release' internet of things transmission protocol is adopted between the cloud terminal and the intelligent terminal, the cloud terminal serves as a release end, the intelligent terminal subscribes data to the cloud terminal, and when an alarm is required, the pushed alarm information and the current standard exceeding numerical value information are displayed immediately.
In this embodiment, the COD value in the water quality numerical value after the coal chemical industry waste water treatment is less than 50mg/L, the content of ammonia nitrogen is less than 5mg/L, the PH value is between 7-8, the water temperature is between 28-32 ℃, monitoring equipment can give an alarm once the water quality numerical value exceeds standard, the data calculation and judgment function that the pollutant exceeds the limit is in the data processing device which is very close to the monitoring device, the function of processing data is placed at the place which is very close to the monitoring point, instead of processing and judging after the data is returned to the cloud terminal, the timeliness of data transmission and the stability of data can be guaranteed, delay is reduced, and alarm prompt information can be informed to relevant personnel more quickly when abnormal conditions occur, and the efficiency of information transmission is effectively improved.
The method comprises the steps that original level data of a sensor in the monitoring equipment are amplified and reformed by an amplifier and are converted into water quality numerical values and alarm numerical value data output signals corresponding to the original level data according to a certain rule, the analog signals are amplified by an integrated operational amplifier F007 model, the amplified analog signals are converted into digital signals by an integral A/D converter, the water quality numerical values or the alarm numerical value data output signals are transmitted to a field control column or device by matching with a network cable transmission channel on the basis of a 4G existing wireless network, and the data output signals are transmitted to an intelligent terminal set by a system in real time by the device.
The transmission process part adopts a message protocol based on a publish/subscribe paradigm under an ISO standard (ISO/IEC PRF 20922). It works on the TCP/IP suite and is a publish/subscribe messaging protocol designed for remote devices with poor hardware performance and in poor network conditions. MQTT is a client-server based message publish/subscribe transport protocol. The data transmission between the intelligent terminal and the cloud terminal adopts an internet of things message queue telemetering transmission protocol, the intelligent terminal actively subscribes information data of the cloud terminal, the intelligent terminal and the cloud terminal are reliably connected, when new data are released at the cloud terminal, the intelligent terminal can receive a tiny data packet to prompt that new data exist, then the intelligent terminal accesses the cloud terminal to obtain new effective data, and the data content comprises wastewater content data such as ammonia nitrogen content and PH value.
In this embodiment, the intelligent terminal may adopt an intelligent operation terminal such as a mobile phone, a tablet, a computer, and the like.
The embodiment also provides a method for monitoring the effluent data after wastewater treatment, which comprises the following steps:
s1: a plurality of sensor groups in the data processing terminal collect data such as wastewater pollutants and the like, and then the data are transmitted to the nearby data processing terminal by using a transmission cable;
s2: after receiving data, the data processing terminal firstly analyzes and detects whether the data exceeds the limit, if so, marks a data packet zone bit, wherein the data packet is a string of binary data, the 1 st bit is an over-limit zone bit, the 2 nd to 10 th bits are area zone bit, the 10 th to 20 th bits are ammonia nitrogen content, and the like; then immediately sending the data to the 4G gateway; if the data is not over-limit, storing the data into a temporary cache, and sending the data to the gateway once every ten data points;
s3: after receiving the data, the gateway sends a data packet to the cloud terminal through a 4G network provided by an operator;
s4: the cloud terminal receives and processes, and firstly, the overrun flag bit is checked; if the data exceeds the limit, the data is immediately issued to a data center display screen and a voice alarm, the voice alarm sends out alarm prompt information and then stores the alarm prompt information in a database, and the data center display screen displays alarm content; if the data content does not exceed the limit, storing the data into a database, then publishing the data, displaying the data content on a data center display screen, and subscribing the data from the intelligent terminal to the cloud terminal;
the above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A monitoring system for effluent data after wastewater treatment, comprising: the system comprises a plurality of annular data acquisition devices, a data processing terminal, a gateway, a cloud terminal, a data center display screen, a voice alarm and an intelligent terminal;
the annular data acquisition device is connected with the data processing terminal, the data processing terminal is connected with the gateway, the gateway is in data transmission with the cloud terminal, and the cloud terminal is in data transmission with the data center display screen, the voice alarm and the intelligent terminal respectively;
the annular data acquisition device is used for acquiring effluent detection data of the wastewater discharge outlet;
the data processing terminal is used for receiving the data acquired by the annular data acquisition device, judging whether the acquired data exceed a preset threshold value or not, and sending the analyzed data to the cloud terminal through the gateway;
the data center display screen is used for displaying data, the voice alarm is used for prompting to give an alarm, and the intelligent terminal is used for subscribing data to the cloud terminal.
2. The system for monitoring the effluent data after wastewater treatment according to claim 1, wherein the annular data acquisition device is provided with a plurality of groups of sensors, the sensors are connected with a data processing terminal, and the sensors comprise a COD sensor, a PH sensor, an ORP sensor, a temperature sensor and an ammonia nitrogen sensor.
3. The system for monitoring the effluent data after wastewater treatment according to claim 1 or 2, wherein the annular data acquisition device adopts an arc-shaped structure, the diameter of the water outlet of the annular data acquisition device is gradually reduced along the wastewater discharge direction, and a plurality of acquisition sensors are arranged at the tail end of the water outlet of the annular data acquisition device.
4. The system for monitoring the effluent data after wastewater treatment as claimed in claim 1, wherein the data processing terminal adopts a Stm32 series single chip microcomputer.
5. The system for monitoring effluent data from wastewater treatment according to claim 1, wherein said gateways are arranged according to monitoring area, each gateway individually transmitting collected data of the monitoring area.
6. A method for monitoring effluent data after wastewater treatment is characterized by comprising the following steps:
the annular data acquisition device acquires effluent detection data of the wastewater discharge outlet and sends the effluent detection data to the data processing terminal;
the data processing terminal receives the water outlet detection data, analyzes whether the water outlet detection data exceed a preset threshold value or not, judges that the water outlet detection data exceed the preset threshold value, and sends the water outlet detection data to the gateway after marking; if the water outlet detection data does not exceed the preset threshold, storing the water outlet detection data into a temporary cache, dividing the water outlet detection data into a plurality of data points and then sending the data points to a gateway;
the gateway sends the received effluent detection data to the cloud terminal;
the cloud terminal analyzes whether the water outlet detection data exceeds a preset threshold value or not, if the water outlet detection data exceeds the preset threshold value, the data are immediately issued to a data center display screen and a voice alarm, the data center display screen displays alarm content, and the voice alarm sends alarm prompt information and then stores the alarm prompt information in a database; if the data content does not exceed the preset threshold, the data content is stored in a database, then the data is published, the data content is displayed on a data center display screen, and the intelligent terminal subscribes the data to the cloud terminal.
7. The method for monitoring the effluent data after the wastewater treatment according to claim 6, wherein if the effluent detection data exceeds the preset threshold, the effluent detection data is labeled and then sent to the gateway, and the method comprises the following specific steps:
and (4) sorting the water outlet detection data into a binary data packet, wherein the data packet is provided with an overrun zone bit, and marking the overrun zone bit when the overrun zone bit is judged to exceed a preset threshold value.
8. The method for monitoring the effluent data after wastewater treatment according to claim 6, further comprising a data preprocessing step, specifically comprising the steps of:
the collected effluent detection data are split and sorted according to data types, amplified through an amplifier, converted into digital signals through an analog-to-digital converter and stored in a temporary cache database.
9. The method for monitoring the effluent data after wastewater treatment according to claim 6, wherein the intelligent terminal subscribes data to the cloud terminal by using an internet of things message queue telemetry transmission protocol.
10. The method for monitoring the effluent data after wastewater treatment according to claim 6 or 9, wherein the intelligent terminal subscribes data to the cloud terminal, and the method comprises the following specific steps: the intelligent terminal actively subscribes information data of the cloud terminal, the intelligent terminal and the cloud terminal establish reliable connection, when new data are released at the cloud terminal, the intelligent terminal receives a data packet reminding that the new data exist, and the intelligent terminal accesses the cloud terminal to obtain the new effective data.
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