CN115394068A

CN115394068A - Remote control and remote measurement system and data identification method thereof

Info

Publication number: CN115394068A
Application number: CN202110509684.8A
Authority: CN
Inventors: 黄珍珍; 钟杰; 钟森澈
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-09
Filing date: 2021-05-09
Publication date: 2022-11-25

Abstract

The invention relates to a remote control and remote measurement system, and discloses a remote control and remote measurement system and a data identification method thereof. The remote control and remote measurement terminal comprises a microprocessor, a memory, a wireless network module, a collection unit, an output unit, a sensor and output equipment. The data identification method is that when the data collected by the system is transmitted, processed, stored and displayed, the data item contains a data identifier and a data value. And the data identifier comprises a data type number, a data sequence number, a value category number and a value length. The system has the advantages of convenience in installation and debugging, low maintenance cost, networked management and high reliability. The system can be managed in a unified way, the complexity of data transmission, processing, storage and display is reduced, and the universality and the applicability of the system are enhanced.

Description

Remote control and remote measurement system and data identification method thereof

[ technical field ]

The invention relates to a remote control and remote measurement system, in particular to a remote control and remote measurement system based on wireless network communication and a data identification method thereof.

[ background art ]

First, the present situation of the remote telemetry system is briefly described.

The technical key of the remote control and telemetry system is data transmission. In early telemetry and telemetry systems, data transmission was generally based on conventional radio transmission techniques, and data transmission between the telemetry and telemetry terminals and the host was achieved. The conventional radio transmission technology is complex, the wireless transceiving power is limited, remote transmission is difficult to achieve, and the remote control and telemetry function cannot be achieved.

With the development of cellular mobile communication technology, mobile network technologies such as 2G, 3G, 4G, 5G, etc. are emerging and becoming mature and widely used; brings innovative breakthrough for remote control and remote measurement systems and enters the era of remote control and remote measurement. Under the internet access technical condition of 2G, 3G, 4G and 5G wireless communication networks provided by telecommunication, mobile, unicom and other large operators, computers, servers, various types of network equipment and mobile communication equipment arranged around the world can be conveniently accessed into the internet, and a communication foundation is provided for each equipment of a remote control and telemetry system. Although the wireless network technology based on cellular mobile communication is very complex and the equipment investment is expensive, special operators are available for special operation and maintenance, and users can conveniently use internet resources only by accessing.

The remote control and remote measurement system is incorporated into the Internet based on a wireless network, carries out remote communication, and is widely applied to multiple fields of hydrology, rivers, water conservancy, oil fields, agriculture, forest fire prevention, railways, traffic, environmental protection, meteorology and the like.

The remote control and remote measurement system is realized by arranging a plurality of remote control and remote measurement terminals with wireless network communication function in the system, which are called remote terminals for short below; and a server is arranged in the monitoring center or the machine room. The remote terminal is accessed to the Internet through a wireless network to communicate with the server, so that effective data transmission is realized.

The remote terminal is externally connected with various sensors, and the acquired data is processed and then uploaded to the server for processing, storage and display. The server can also send an output instruction to be transmitted to the remote terminal, and the output instruction is processed by the remote terminal and then is connected with the output equipment through the output unit, so that the remote control and remote measurement functions are realized.

The remote control and remote measurement system has the main functions of acquiring data of various sensors by a remote terminal through wireless transmission, uploading the data to a server, and then processing, storing and displaying the data. And the client side can make early warning or alarm for abnormal data or data exceeding the warning line, and can check and process the abnormal data or data in time.

When remote terminal installation and debugging and parameter initial set, for example when setting up server IP domain name, remote terminal address, collection parameter setting etc. need come manual setting through remote terminal's simple and easy keyboard and simple and easy display, complex operation, more can't realize many parameters and set up in batches, it is very inconvenient to use.

The wireless network based on the cellular mobile communication technology has poor stability caused by the influence of regions, weather and the like, and has the phenomena of communication errors and invalidation. So that the communication reliability of the remote control and remote measuring system is not high. Moreover, when the wireless network based on the cellular mobile communication technology is used for accessing the internet, a certain fee is paid to the operator, and the use and maintenance cost is high.

Secondly, the current situation of the remote control and telemetry system on data reporting, processing, storing and displaying is briefly described.

The remote control and remote measurement system is widely applied, and the types of the collected data are very many. The following is set forth with respect to a remote telemetry system for use in a hydrological system. The remote terminals of the hydrological system are mainly classified into various types of remote terminals such as precipitation, riverways, reservoirs (lakes), gate dams, pump stations, tides, soil moisture, underground water, water quality, water intakes, water outlets and the like according to application environments. The types of data related to monitoring acquisition are: water level, flow speed, rainfall (snow), evaporation, silt, ice, soil moisture, water quality, water temperature, voltage and the like account for more than one hundred. However, for a single remote terminal, the number of external sensors is limited, and the data collected is about ten. Each remote terminal reports the acquired data to the server, and under a normal condition, the number of the data reported by each remote terminal is 5 to 20; however, the data types reported by each remote terminal are different and may be different.

For example, the data reported by a precipitation station type remote terminal include: daily precipitation, 5-minute precipitation, 10-minute precipitation, 30-minute precipitation, power supply voltage, and equipment status;

for example, the remote terminal of the river channel station reports the following data: daily precipitation, 5-minute precipitation, 10-minute precipitation, 30-minute precipitation, flow, water level, flow rate, power supply voltage, and equipment state;

that is, the types of data collected by each type of remote terminal are various, and the types of reported data are naturally also various. The remote terminals of the same type report different types of data due to different external sensors.

The general format of the report reported by the remote terminal is as follows:

message header + data area + message trailer

The message header generally contains information such as a message ID, a message function code, an address of a remote terminal, a message length, etc., and the message trailer generally includes a message end identifier and a check code. The header and trailer forms of each message are similar, and detailed description is omitted.

The following description focuses on the message data area, which is also the key part of data transmission. The data area of the message contains a number of data items, typically an arrangement of a set of collected data items, each corresponding to a data item with a certain meaning. The structure is as follows:

data area format: data item 1+ data item 2+ \8230 ++ data item n

The data items in the data area refer to data items related to data acquisition, such as rainfall, water level, voltage and the like. Each data item in the data area is typically a value of data, i.e., a numerical value. The value in the data item represents what meaning, such as rain or water level value, or other value. It will be unknown from the message-in-structure alone.

This raises a question as to what data is the data item in the data area? How many bytes the length of the data is again? What is the different types of data arranged in order? What does the recipient distinguish between these data?

For example, a certain report message format is:

message head + rain value + water level value + voltage value + wind force value + message tail

Thus, after the receiving party receives the data, the data can be distinguished and processed according to the arrangement mode and the meaning of the data agreed by the two parties. The messages with the same data area format can be processed according to a uniform method. That is, the data item expression mode requires that both the transmitting and receiving parties agree on a corresponding message protocol, so that data transmission and processing can be effectively performed.

However, if the data collected by a remote terminal is different from the above, the report message is also different. For example, the format of a message reported by a remote terminal is as follows:

message header + temperature value + wind speed value + evaporation quantity value + No. 1 pipe flow quantity value + No. 2 pipe flow quantity value + No. 3 pipe flow quantity value + message tail

Clearly, this cannot be handled by the convention above. The solution is to re-agree on another message format for processing.

As more and more various remote terminals access the system in succession, the messaging conventions become more and more diverse and complex.

Another problem is that: some remote terminals may be externally connected to multiple sensors of the same type. For example, a certain remote terminal is externally connected with 5 water level meters, and collects data of the 5 water level meters for reporting. The water level gauges are numbered 1 to 5, respectively. When reporting, the data of water level 1, 2, 8230, 8230and 5 are reported. Therefore, the problem of data sequence numbers of the same data type is also involved, and the conventional reporting and receiving processing mode is more unsuitable.

There is also a problem that, in a hydrological system, when certain data is collected, such as a water level, an abnormality or alarm process is made as to whether it exceeds an upper water level limit or falls below a lower water level limit, and the collected water level is relative, and there is also a basic value problem that: data value = base + acquisition value.

The upper limit value, the lower limit value, the base value, and the like of each terminal are generally not completely the same, and all values need to be set according to the actual use environment. In summary, how to identify a certain data type (rain or water level), what the sequence number is (water level 1 or water level 3), what the value is (current value or upper limit value, lower limit value, base value), and what the length of the value is (4 bytes or 8 bytes. Thus, the problem is further complicated.

According to different data types, data serial numbers and numerical meanings, the meaning of the data items in the data area is increased in a geometric level. When the remote terminal reports messages and the server receives, analyzes, processes and stores data, the method for solving the problem by means of the conventional appointed message format is obviously useless in the face of huge different data meanings.

Therefore, the remote control and telemetry system can only access a limited number of terminals with the same collected data, and cannot access more remote terminals of various types. When remote terminals with different collected data types need to access the system, only a new message format can be appointed and corresponding program codes are modified, so that the problem can be solved; therefore, the universality, the diversity and the individualization of the system are seriously influenced. Severely limiting the access of more types of remote terminals to the system.

In summary, how to identify so many data types, data serial numbers, data lengths, and data meanings in data transmission, processing, storage, display, etc. in a remote telemetry system is a problem to be solved. Only by solving the data identification problem, the method can be suitable for the access of various remote terminals of different collected data, so that a large amount of data can be uniformly and orderly managed.

[ summary of the invention ]

The invention aims to provide a remote control and remote measurement system which is convenient to install and debug on site, low in maintenance cost, powerful in function and managed in a networking manner.

The invention also aims to solve the technical problem of providing a data identification method of the remote control and telemetry system, which can adapt to the pull-in of various different types of remote control and telemetry terminals and has strong applicability of unified management, processing, storage and display.

In order to solve the technical problems, the invention provides a remote control and telemetry system, which adopts the technical scheme that the remote control and telemetry system comprises a CS server, a data server, a WEB client, a PC client, a mobile client, the Internet and a plurality of remote control and telemetry terminals. The data server is a database server. The CS server is a server based on a client-side and server-side development mode.

And the CS server, the data server, the WEB client and the PC client are connected to the Internet. The mobile client and the remote control and telemetry terminal are connected to the Internet through a wireless network.

The communication connection of the remote control and remote measurement system is as follows: the remote telemetry terminal is connected to the CS server. The mobile client is connected to the CS server. The PC client is connected to the CS server. The CS server is connected to a data server. The WEB server is connected to the data server. The WEB client is connected to the WEB server.

The remote control and remote measurement terminal comprises a microprocessor, a memory, a wireless network communication module, a plurality of acquisition units, a plurality of output units, a plurality of sensors and a plurality of output devices.

The wireless network communication module comprises a WIFI network module and 2G, 3G, 4G and 5G remote wireless network modules based on a cellular mobile communication technology. The wireless network communication module is connected to the microprocessor.

The memory is connected to the microprocessor. And the acquisition unit is connected to the microprocessor. And the output unit is connected to the microprocessor.

The sensor is connected to the acquisition unit. The output device is connected to the output unit.

The remote control and remote measurement terminal can conveniently access the Internet through the wifi network module, so that the network use cost is reduced, and the transmission reliability is improved. And can be when the on-the-spot debugging, connect through wifi network module and mobile client, conveniently realize the on-the-spot debugging.

In order to solve the technical problem, the invention also provides a data identification method of the remote control and telemetry system. The data item includes a data identifier and a data value when the collected data is transmitted, processed, stored, and displayed.

The data identifier comprises a data attribute number, a data sequence number, a data value classification number and a data length;

the data identifier is an array or an integer with a fixed length. The data identifier is typically 4 bytes to 8 bytes in length.

The following is further described in connection with examples of messages transmitted by communications. The message format is as conventional.

Message header + data field + message trailer

Data area format: data item 1+ data item 2+ \8230, 8230 + data item n

Data item format: data identifier + data value

Thus, the message format is:

message header + data identifier 1+ data value 1+ data identifier 2+ data value 2+ \8230 \ 8230 ++ data identifier n + data value n + message tail

I.e., each data item, contains a data identifier and a data value. I.e. the data item adopts the representation method of data identifier + data value.

For example, a certain remote terminal is externally connected with 1 rain gauge, 2 water level meters and 1 thermometer; the reported message is as follows:

message header + rainfall identifier + rainfall value + water level 1 identifier + water level 1 value + water level 2 identifier + water level 2 value + temperature identifier + temperature value + message tail

For example, the other terminal is externally connected with 1 flow meter, 1 rain gauge and 1 anemometer; the reported message is as follows:

message header + flow rate identifier + flow rate value + rainfall identifier + rainfall value + wind power identifier + wind power value + message tail

Thus, each data item in the data area of the message includes a data identifier and a data value that identifies the meaning of the data item, so that the meaning of each data value is clear. For each message with different data types and data item numbers, a unified method can be adopted to analyze, process and store the data.

The encoding method of the data identifier is as follows, but is not limited to the byte length of the data identifier and the sequence of each element.

Taking a 4-byte data identifier as an example, table 1 is an example of a data identifier format:

table 1:

byte 1	Byte 2	Byte 3	Byte 4 low order 4 bits	Byte 4 high 4 bits
					Data attribute number low order	High order of data attribute number	Data sequence number	Data value class numbering	Data value length

If the system needs to express more data type meaning, the data identifier can be set to 6 or 8 bytes. A very large data type meaning can be represented.

Data attribute number:

an example data attribute number is identified by 2 bytes for byte 1 and byte 2, which may correspond to 65535 data attributes. As for what data attribute is represented by 0-65535, the corresponding relation between the data attribute number and the data attribute is defined by the system and then stored in the database. The CS server, the WEB server, the PC client, the mobile client and the remote control and remote measurement terminal in the system can be directly or indirectly read from the database.

Example (c): table 2 lists the correspondence between part of the custom data attribute numbers and the data attributes.

Table 2:

data attribute numbering	Data name	Unit	Data format	Decimal point digit
					1	Cross sectional area	Square meter	16 carry system	2
2	Instantaneous air temperature	Degree centigrade	16 carry system	1
					3	Instantaneous water temperature	Degree centigrade	16 carry system	1
31	Daily precipitation	Millimeter	16 carry system	1
					55	Flow rate of flow	Meter per second	16 carry system	3
56	Voltage of	V	16 carry system	2
					57	Water level	Rice made of glutinous rice	16 carry system	3

The meaning of the data value in the data item is clear with the corresponding relation between the data attribute number and the data attribute. In the report message, only one message protocol is required to be stipulated, and the method can adapt to various data types. The processing, saving and displaying are performed similarly.

It should be noted that the correspondence between the data attribute numbers and the data attributes is not a fixed correspondence, but a custom correspondence of the system. As long as the system is defined, there is a correspondence. When a certain data type needs to be added newly, the corresponding relation between the data attribute number and the data attribute is only needed to be added in the system and recorded in a corresponding database, and the corresponding relation between the data attribute number and the data attribute is determined.

Data sequence number:

the data serial number of the example is marked by byte 3, and the serial number is 0-255 in total, and corresponds to the serial number of the similar sensor externally connected with the remote control and telemetry terminal.

Data value classification number:

an exemplary data value class number is identified by the lower half byte of byte 4, i.e., 4 bits, and may represent 16 classes of data values;

example (a): table 3 lists the correspondence between partial data value class numbers and data value classes:

the correspondence between the data value class number and the data value class is not fixed in each system. It is only necessary to unify the rules in the telemetric system.

Data value length:

the data value length is represented by the high nibble of byte 4, i.e. the data value length is 1 to 15 bytes, 0 representing the default 4 bytes.

A data item consists of a data identifier and a data value. With the data identifier, the content represented by the data value is clearly known, including the data type name, unit, decimal point number, data sequence number, category of the data value, and length of the data value.

The reporting of communication transmission, the server receiving, processing, storing, displaying, etc. are further explained below in conjunction with a certain remote terminal. Assume that the remote terminal collects: the power supply voltage is 12.56V, the water level is 9.36 meters, and the flow rate is 3.53 meters/second;

the reporting messages are as follows (example messages are transmitted in 16 systems, and for the sake of intuition, the following are expressed in decimal notation):

message header +56 (voltage identifier) +1256+57 (water level identifier) +9360+55 (flow rate identifier) +3530+ message tail

After receiving the message, the server needs to process and store the message, for example, storing the message in a database.

According to the principle that the data item includes data identifier and data Value, a data table is established in the data base, and the data table includes several IDs for storing data identifiers, ID1 and ID2, 8230, IDn, and Value for storing data Value, value1 and Value2, 8230, value N. ID1 represents data identifier 1 and Value1 represents data 1. The data identifiers and data values correspond one-to-one, and so on.

According to the report message, the record in the data table is stored as follows: IP1=56, value1=1256, id2=57, value2=9360, id3=55, value3=3530. Other portions of the database record that do not have actual data are filled with 0 s. This allows a good storage.

The data display follows:

reading the stored record from the data table of the database to obtain: ID1=56, value1=1256, id2=57, value2=9360, id3=55, value3=3530, and the other ID 0 is no actual data and is not processed.

From byte 1 and byte 2 of the data identifier ID1=56, the data attribute number 56 can be calculated. According to the customized data attribute number and data attribute corresponding relationship of example table 2, the data attribute corresponding to 56 is: data name: the voltage, unit is V, and the decimal point is 2 bits. Value1=1256 then the display can be processed as: voltage =12.56V. Similarly, ID2=57 and Value2=9360 are shown as: water level =9.36 meters. ID3=55 and Value3=3530 show: flow rate =3.53 m/s.

By analogy, all data reporting, data transmission, message processing, storage and display can be based on the data identification method to process various types of data uniformly. Therefore, the system can conveniently access various different terminals for collecting data. The problem of transmission and compatibility of various types of data is solved, and the transmission, processing, storage and display of various types of data can be processed by a unified method.

[ description of the drawings ]

The invention is described in further detail below with reference to the drawings and the detailed description.

FIG. 1 is a schematic block diagram of a remote telemetry system according to an embodiment of the present invention.

Fig. 2 is a communication connection block diagram of a remote telemetry system according to an embodiment of the invention.

FIG. 3 is a functional block diagram of a remote telemetry terminal according to an embodiment of the present invention.

Fig. 4 is a block diagram of field debugging communication connection of the remote control and telemetry terminal according to the embodiment of the invention.

[ detailed description of the invention ]

Fig. 1 shows a schematic block diagram of a remote telemetry system according to an embodiment of the present invention. A remote control and remote measurement system comprises a CS server, a data server, a WEB client, a PC client, a mobile client, the Internet and a plurality of remote control and remote measurement terminals. And the CS server, the data server, the WEB client and the PC client are connected to the Internet. The remote control and remote measurement terminal and the mobile client are connected to the Internet through a wireless network. The access of the internet provides a basis for two-party communication and multi-party communication for each device connected to the internet.

Fig. 2 shows a communication connection block diagram of a remote control and telemetry system according to an embodiment of the present invention. The communication connection relationship of a remote control and telemetry system is as follows: the remote control and remote measurement terminal is connected with the CS server through a wireless network, and the mobile client is connected with the CS server and the data server through the wireless network. The PC client is connected with the CS server and the data server. The CS server is connected with the data server. The WEB client is connected with the data server. The WEB client is connected with the WEB server. And data communication between the two parties is realized through communication connection.

The CS server is communicated with a remote control and telemetry terminal, a PC client and a mobile client which are in communication connection with the CS server by adopting a C/S structure connected with TCP and UDP.

The WEB server and the WEB client communicated with the WEB server form a B/S structure, namely a communication mode of a browser/server structure. The processed data is viewed on a WEB client, namely a browser.

The functional block diagram 3 of the remote control and telemetry terminal according to the embodiment of the invention is shown. The remote control and telemetry terminal comprises a microprocessor, a memory, a WIFI wireless network module, a remote wireless communication network module, a plurality of acquisition units, a plurality of output units, a plurality of sensors and a plurality of output devices.

The microprocessor is connected with the acquisition unit. The acquisition unit is connected with the sensor and acquires data to the microprocessor. The microprocessor processes the data and transmits the processed data to the CS server. And the data of the sensor is transmitted to the CS server and processed and stored.

The memory is connected with the microprocessor and used for storing programs and data.

The remote wireless network module is a 2G, 3G, 4G or 5G wireless network module and is connected with the microprocessor. The microprocessor is accessed to the Internet through the remote wireless network module, and transmits the acquired data to the CS server.

The output unit is connected with the microprocessor and is externally connected with output equipment. Control of external devices such as relays, power supplies, water pumps, valves, etc. is provided.

And the WIFI network module is connected to the microprocessor. And providing WIFI network functions. WIFI router equipment for accessing the internet can be set within an effective range of a WIFI signal of a remote terminal. Therefore, the microprocessor can be connected with the WIFI router to be merged into the Internet through the WIFI network module and is communicated with the CS server. By not accessing the remote wireless network, the cost of paying the network operator can be reduced. When the WIFI line is abnormal, the WIFI line can be accessed to the Internet through the remote wireless network module. Therefore, the reliability of system communication is improved by the double network lines. And maintenance cost can be saved.

In the embodiment of the invention, a connection block diagram for field debugging communication of the remote control and remote measurement terminal is shown in fig. 4, and the remote control and remote measurement terminal is in communication connection with a mobile client through a WIFI network to realize communication between the remote control and remote measurement terminal and the mobile client. Thereby facilitating field debugging and batch setting. And the field debugging difficulty is reduced.

In the implementation of the invention, the remote control and telemetry terminal is designed and produced according to the principle of the schematic block diagram of the remote control and telemetry terminal and the connection relation and the principle of each module in the embodiment of the invention shown in fig. 3.

Referring to fig. 2, a communication connection block diagram of a remote telemetry system and its principles are shown in an embodiment of the invention. And designing and developing software, and matching with corresponding computer hardware to form a CS server, a data server, a WEB server, a PC client and a mobile client.

During data communication, data reporting, data downlink, processing, storage and display, the method is designed according to the method that data items all contain data identifiers and data values, and the corresponding relation between data attribute numbers and data attributes is customized in the system. And storing the data in a database for other intelligent devices to read and use. The corresponding relationship between the data value classification number and the data value classification can be customized or agreed. The collected data types related to the system are defined with the corresponding relation between the data attribute numbers and the data attributes, otherwise, the system cannot determine the data attribute attributes corresponding to the data attribute numbers and can only process the data according to illegal data.

Therefore, the problems of reporting, processing, storing and displaying of various data types are well solved. The system has the advantages of completing the function of unified management of the system and improving the universality and adaptability of the system.

Thus, the present invention is well practiced.

Claims

1. A remote control and remote measurement system comprises a CS server, a data server, a WEB client, a PC client, a mobile client, the Internet and a plurality of remote control and remote measurement terminals. The data server is a database server. The CS server is a server based on a client-side and server-side development mode.

2. The system according to claim 1, wherein the CS server, the data server, the WEB client, and the PC client are connected to the Internet. The mobile client and the remote control and telemetry terminal are accessed to the Internet through a wireless network.

3. A remote telemetry system as claimed in claim 1, wherein the communication link of the system is: the remote telemetry terminal is connected to the CS server. The mobile client is connected to the CS server. The PC client is connected to the CS server. The CS server is connected to the data server. The WEB server is connected to the data server. The WEB client is connected to the WEB server.

4. The remote telemetry terminal of claim 1, comprising a microprocessor, a memory, a wireless network module, a plurality of acquisition units, a plurality of output units, a plurality of sensors, a plurality of output devices. The wireless network module comprises a WIFI network module and a remote wireless network module based on a cellular mobile communication technology.

5. The remote telemetry terminal of claim 1, wherein the sensor is coupled to the acquisition unit. And the output equipment is connected to the output unit.

6. A data identification method of a remote control and telemetry system is characterized in that: when the system transmits, processes, stores and displays data related to acquisition, the data item of the system comprises a data identifier and a data value. The data identifier comprises a data attribute number, a data sequence number, a data value classification number and a data length.

7. The method of claim 6, wherein the step of identifying the data comprises the steps of: the data identifier is an array or integer of fixed byte length.

8. The method of claim 6, wherein the step of identifying the data comprises: the system self-defines the corresponding relation between the data attribute number and the data attribute and stores the data attribute number and the data attribute in the data server. The system self-defines or appoints the corresponding relation between the data value classification number and the data value classification.