CN110808846B

CN110808846B - Communication method and device with complementary advantages of multi-master communication technology

Info

Publication number: CN110808846B
Application number: CN201910883369.4A
Authority: CN
Inventors: 马卫东; 陈锋; 黄荣超
Original assignee: Guangzhou Kongtian Communication Technology Service Co ltd
Current assignee: Guangzhou Kongtian Communication Technology Service Co ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2022-02-08
Anticipated expiration: 2039-09-18
Also published as: CN110808846A

Abstract

The invention discloses a communication method and a device with complementary advantages of multi-master communication technologies, which relate to the field of communication transmission of the Internet of things and comprise the following steps: initializing a sending sequence and interval list and a latest receiving list; grading the communication means, and dynamically optimizing the sending sequence and interval list; when data to be sent is generated, packaging the data into datagrams; according to the sending sequence and the interval list, sending out the packaged datagram from various communication means in sequence, and waiting for the upper computer to respond; if so, comparing the response datagram with the information of the latest receiving list, if the same data record exists, not executing the action, and returning the corresponding response only in the original way; if there is no identical data record, then an action is performed. The conflict which may occur between the simultaneous working and the simultaneous data receiving and sending of various communication means is realized, and the various communication means work independently without mutual influence; the communication method has the advantages of high speed, high efficiency and low cost.

Description

Communication method and device with complementary advantages of multi-master communication technology

Technical Field

The invention relates to the technical field of communication transmission of the Internet of things, in particular to a communication method and a communication device with complementary advantages of multiple main communication technologies.

Background

In practical application of the internet of things equipment, because the network quality of a mobile communication operator or a telecommunication operator has a great relationship with the number of people using the internet of things equipment, in the occasions such as an unmanned area, an urban and rural intersection area, an underground tunnel, a basement, an underground parking lot and the like, the coverage of a single communication means often cannot meet the actual use requirement, or the communication cost is too high, or the layout cost is high, or the reliability and the stability are poor, so that the actual requirement of the internet of things is difficult to meet; therefore, a communication method in which a plurality of (three or more) communication means are integrated is a necessary trend.

At present, the traditional communication equipment carrying various communication means is designed in a master-slave mode, because the master-slave mode is simpler, only one communication link communicates with an upper computer at any time, the equipment, a base station and the upper computer are one-to-one, data redundancy does not need to be considered, only whether a current channel is effective is concerned, and the usage is as follows: one communication means is used as a main communication means, and other means are used as standby communication means; when the primary communication means is abnormal, the backup communication means is enabled for communication, fail → switch → handshake → communication … … fails again → re-switch → re-handshake → re-communication … …, and the process is repeated.

For more intuitive description, as shown in fig. 9, the active/standby communication systems using 3 communication modes such as LAN, WiFi, GPRS, etc. are generally sorted in order of LAN, WiFi, GPRS, etc., and a communication means is initially selected according to communication cost. When the LAN and the WiFi are intermittent (for example, in the case where the edge is covered by the traditional operator such as an underground garage and an underground tunnel), the scheme of the main-standby communication means includes that the base station device generates a datagram and then transmits the datagram to the upper computer, the response time is obviously seen, the switching of the main-standby communication means increases the response time for switching the communication means one by one, and if the device for sending data needs to pass through one base station, the time difference is expanded to 2 times. If the equipment passes through a plurality of equipment and then passes through the base station, the time difference is doubled after each equipment or base station passes through, and finally the time reaching the upper computer becomes unacceptable.

If the reliability of communication needs to be improved, most of the active and standby communication systems preferentially select general charging GPRS as a main communication means, and if the data volume is large, the generated communication cost is very high, and the intermittent WiFi and LAN free communication means are not sufficiently utilized.

If the communication means of WiFi and LAN can be tested at regular time, when the communication means is effective, the WiFi and LAN are switched to, GPRS is closed, the switching times are more, the switching time is long, and the timeliness is difficult to guarantee.

In summary, the conventional scheme of the active/standby communication method has several disadvantages:

the judgment of failure and network disconnection of a certain communication means needs a long time.

The judgment basis of a certain communication means failure and network disconnection is not clear, which may cause misjudgment, even under the condition that the communication means is not smooth.

In the process of network outage judgment and other communication means restarting, the transmission of emergency information may have a relatively long delay, and data loss may also be caused.

Under the influence of reliability requirements, the communication cost of the main communication means is generally higher, the advantages of the free communication means are not fully utilized, and the overall operation and maintenance cost is high.

The selection of the communication scheme can be adjusted according to the actual use scene, and requires professional technicians and instruments and meters and higher overhaul and maintenance cost; maintenance can result in communication interruptions.

Disclosure of Invention

In order to solve the technical problems, the invention provides a communication method and a device with complementary advantages of multi-master communication technology, which have the advantages of high information reliability, quick transmission, low time delay and low operation and maintenance cost, aiming at the field of communication transmission of the internet of things, and the invention organically integrates various communication means, does not need to be divided into a master communication means and a slave communication means, is on-line and started simultaneously, and is effective simultaneously according to a set rule: according to the method and the device for carrying out communication with an upper computer for multiple times by preferentially selecting a timely and free communication means according to the conditions that the communication cost is from low to high, the communication response time is from short to long, and the communication transmission is from fast to slow.

The technical scheme of the invention is as follows:

a communication method with complementary advantages of multi-master communication technology is characterized in that: the communication method comprises the following steps:

initializing a sending sequence and interval list and a latest receiving list, presetting the sending sequence and interval list and the latest receiving list, storing a default sending sequence and sending interval, and emptying the latest receiving list;

when data to be transmitted is generated, the data to be transmitted is encapsulated into a datagram, which includes but is not limited to: the data generation time, the data generation sequence number, the data generation equipment number and the data content;

recording the encapsulated datagram;

according to the sending sequence and the interval list, sending out the packaged datagram from various communication means in sequence, and waiting for the upper computer to respond;

the upper computer needs to respond to all the received datagrams, and returns corresponding responses in the original way; to confirm that the communication means is valid and to confirm that the specific data content has been sent to the upper computer;

continuously sending for multiple times, and quitting sending if no response exists;

if so, comparing the response datagram with the information of the latest receiving list, and if the same data record exists, not executing action (referring to executing corresponding operation of the content, such as functions of switch control, data acquisition, working parameter modification and the like) according to the content of the datagram; meanwhile, the upper computer analyzes and processes the data sent by the upper computer, and only returns the response and record processing of the communication means to the repeated information in the original way, but does not execute the action;

if there is no identical data record, performing an action;

recording response data and reporting to a latest receiving list;

finding a communication means sending record corresponding to the response according to the data generation time, the data generation sequence number and the data generation equipment number, and subtracting the sending time of the communication means according to the response time of the response data to obtain the response time of the corresponding communication means;

the communication means are classified, and then the sending sequence and interval list are dynamically optimized: dividing various communication means into three levels of free communication means, general charging communication means and high charging communication means, according to the response time of the communication means responded at this time, promoting the sending sequence of the communication means responded at this time at the respective corresponding level, dynamically generating a preferential sequence for the next datagram to be sent, and updating the sending sequence and the interval list for standby;

the dynamic optimization technical means aims at properly controlling the amount of redundant data, reducing the amount of the redundant data among equipment, a base station, an upper computer and the equipment, the base station and the upper computer on the premise of not influencing the use, and controlling the consumption of bandwidth and the load of the upper computer; the transmission time of the general fee and high fee communication means is shifted backward by the transmission interval, and if the free communication means has completed the information transmission, the general fee and high fee communication means is not needed to be used, and the frequency of use is reduced.

Counting the number of the three levels of communication means without response;

judging whether the next data to be sent is generated;

if the next data to be sent is generated, returning that when the data to be sent is generated, encapsulating the data to be sent into a datagram, wherein the datagram includes but is not limited to: generating data, generating sequence number of the data, generating equipment number of the data and data content;

if the next data to be sent is not generated, judging whether other communication means answer the packaged datagram;

if other communication means have responses, if the responses exist, the response datagram is compared with the information of the latest receiving list, and if the same data record exists, the action step is not executed;

if the other communication means do not answer, returning to judge whether the next data to be sent is generated.

Further:

the free communication means include, but are not limited to: RS232, RS485, CAN, data transmission radio station, special line, power carrier, special wireless communication network, Bluetooth, WiFi, LoRa, ZigBee, 433M and other wireless radio frequency technology communication means;

the general charging communication means includes but is not limited to: GPRS, traditional short message, NB-IoT, 2G, 3G, 4G and 5G communication means;

the high-rate communication means includes but is not limited to: beidou short message and satellite telephone communication means;

the sequence communication means for sending the sequence and the interval list are a free communication means, a general charging communication means and a high charging communication means;

the transmission sequence and interval list transmission sequence communication means is specifically as follows: RS232, RS485, CAN, a data transmission radio station, a special line, a power carrier wave, a special wireless communication network, Bluetooth, WiFi, LoRa, ZigBee, 433M, other wireless radio frequency technologies, GPRS, traditional short messages, NB-IoT, 2G, 3G, 4G, 5G, Beidou short messages and satellite phones; the corresponding transmission interval of the communication means is a relatively fixed value, and is solidified when being shipped according to the use scene:

the time interval of two data sending of each communication means is set to be 0.1-70 seconds, and the time interval of two data sending of each data content is set to be 0.1-70 seconds.

For the same datagram, the time interval of every two free communication means: 0-10 seconds; time interval of every two general charging communication means: 5-25 seconds; time interval of every two high-charging communication means: 8-70 seconds.

Preferably:

after the step of counting the number of times of the three levels of communication means with no response, further comprising the steps of:

judging whether the free communication means have no response;

if no response is made to the free communication means, the transmission interval of the general charging communication means is shortened in proportion, and the shortening value is as follows: 10% multiplied by the number of continuous non-response times of the free communication means, wherein the number of continuous non-response times of the free communication means is not more than 8;

if the free communication means has a response, the transmission interval of the general charging communication means is restored to 100%; meanwhile, the sending interval of the high-charge communication means is recovered to 100 percent;

dynamically updating the sending sequence and the interval list;

continuously judging whether the general charging communication means have no response;

if no response is made by the general charging communication means, the transmission interval of the high charging communication means is shortened proportionally, and the shortening value is as follows: 10% × the number of continuous non-response times of the general charging communication means, the number of continuous non-response times of the general charging communication means is not more than 8 times;

if the general charging communication means has response, the transmission interval of the high charging communication means is recovered to 100%;

and dynamically updating the sending sequence and the interval list.

Preferably:

the method comprises the following steps that according to a sending sequence and an interval list, encapsulated datagrams are sent out in sequence from a plurality of communication means, and after the step of waiting for the response of an upper computer, the method further comprises the following steps:

judging whether the upper computer supports a WIFI communication means for data communication;

if the upper computer does not support WIFI communication means data communication, automatically entering the next communication means LORA for data communication;

if the upper computer supports data communication of the WIFI communication means, sending data from the communication means, and checking whether data communication response of the WIFI communication means and the upper computer is correct or not;

if the response is correct, the data is confirmed to be successfully transmitted by the communication means, and the generation of the next data to be transmitted is waited;

if the response is incorrect, checking whether the response is overtime, and if the response is not overtime, returning to the step of checking whether the data communication response of the WIFI communication means and the upper computer is correct;

when the response is overtime, the failure of sending the data operation data by the communication means is proved, and the next communication means LORA is entered for data communication;

judging whether the upper computer supports an LORA communication means to carry out data communication;

if the upper computer does not support the LORA communication means data communication, the next communication means LAN is automatically entered for data communication;

if the upper computer supports the data communication of the LORA communication means, the data is sent out from the communication means, and whether the data communication response of the LORA communication means and the upper computer is correct or not is checked;

if the response is incorrect, checking whether the response is overtime, and if the response is not overtime, returning to the step of checking whether the data communication response of the LORA communication means and the upper computer is correct;

when the response is overtime, the failure of sending data operation data by the communication means is proved, and the next communication means LAN is entered for data communication;

judging whether the upper computer supports the LAN communication means for data communication;

if the upper computer does not support the data communication of the LAN communication means, the next communication means GPRS is automatically entered for data communication;

if the upper computer supports the data communication of the LAN communication means, the data is sent out from the communication means, and whether the data communication response between the LAN communication means and the upper computer is correct or not is checked;

if the response is incorrect, checking whether the response is overtime, and if the response is not overtime, returning to the step of checking whether the data communication response of the LAN communication means and the upper computer is correct;

and when the response is overtime, the data operation data transmission failure of the LAN communication means is proved, the data communication step of judging whether the upper computer supports the WIFI communication means or not is returned, and the response of the upper computer and the free communication means is repeatedly tried for many times so as to strive for the successful data transmission from the free communication means.

Further, the method comprises the following steps:

judging whether the upper computer supports GPRS communication means to carry out data communication;

if the upper computer does not support GPRS communication means data communication, the next communication means NB-IoT is automatically entered for data communication;

if the upper computer supports GPRS communication means data communication, sending data from the communication means, and checking whether the data communication response between the conventional communication means and the upper computer is correct;

if the response is incorrect, checking whether the response is overtime, and if the response is not overtime, returning to the step of checking whether the data communication response of the GPRS communication means and the upper computer is correct;

when the response is overtime, the failure of sending the data operation data by the communication means is proved, and the next communication means NB-IoT is entered for data communication;

judging whether the upper computer supports an NB-IoT communication means for data communication;

if the upper computer does not support NB-IoT communication means data communication, automatically entering the next communication means Beidou short message for data communication;

if the upper computer supports the NB-IoT communication means data communication, executing the data transmission from the communication means, and checking whether the NB-IoT communication means and the upper computer data communication response is correct;

if the response is incorrect, checking whether the response is overtime, and if the response is not overtime, returning to the step of checking whether the data communication response of the NB-IoT communication means and the upper computer is correct;

when the response is overtime, the failure of sending data operation data by the communication means is proved, and the Beidou short message of the next communication means is used for data communication;

judging whether the upper computer supports the Beidou short message communication means for data communication;

if the upper computer does not support the Beidou short message communication means data communication, waiting for the generation of the next data to be sent;

if the upper computer supports the data communication of the Beidou short message communication means, the data transmission from the communication means is executed, and whether the data communication response of the Beidou short message communication means and the upper computer is correct or not is checked;

if the response is correct, the data is confirmed to be successfully transmitted by the communication means, and then the generation of the next data to be transmitted is waited;

if the response is incorrect, checking whether the response is overtime, and if the response is not overtime, returning to the step of checking whether the data communication response of the Beidou short message communication means and the upper computer is correct;

and when the response is overtime, the communication means fails to send the data operation data, and the next data to be sent is waited to be generated.

The invention also provides a communication device with complementary advantages of the multi-master communication technology, which is characterized in that: the communication device comprises a plurality of base stations which are communicated with an upper computer, and also comprises terminal equipment, wherein the terminal equipment can be communicated with the base stations, the base stations are provided with CPU modules and hardware ports, and the CPU modules are connected with the hardware ports and communicated with the upper computer;

the CPU module also comprises an application layer, a service layer and a data link layer which are connected and communicated with each other;

the hardware port also comprises an interface driving layer which is connected with each hardware port and combines with a data link layer to select a communication means so as to realize the function of receiving and transmitting data by the communication means;

the terminal equipment is used for receiving and transmitting data;

the base station is used for transmitting and receiving data;

the interface driver layer may be used to support applications including, but not limited to: RS232, RS485, CAN, data transmission radio, special line, power carrier, special wireless communication network, Bluetooth, WiFi, LoRa, ZigBee, 433M, other wireless radio frequency technology, GPRS, traditional short message, NB-IoT, 2G, 3G, 4G, 5G, Beidou short message, satellite phone and other communication means;

the application layer is used for connecting user terminal equipment to realize the requirements;

the service layer is used for the user to call the data link layer;

the data link layer is to: initializing a sending sequence and interval list and a latest receiving list, presetting the sending sequence and interval list and the latest receiving list, storing a default sending sequence and sending interval, and emptying the latest receiving list; encapsulating data to be transmitted into datagrams; recording the encapsulated datagram; sending out the encapsulated datagram from various communication means in sequence, and waiting for the upper computer to respond;

comparing the response datagram with the information of the latest receiving list, and if the same data record exists, not executing action;

if there is no identical data record, performing an action;

recording response data and reporting to a latest receiving list;

judging whether the next data to be sent is generated;

judging whether other communication means answer the packaged datagram;

the upper computer is used for:

all the received datagrams are responded, and corresponding responses are returned in the original way; to confirm that the communication means is valid and to confirm that the specific data content has been sent to the upper computer;

the data sent is analyzed and processed, and the communication means response and recording process is returned only for the repeated information, but no action is executed.

Further:

the data link layer is further configured to: judging whether the free communication means responds or not; the transmission interval of the general charging communication means is shortened in proportion; the transmission interval of the general charging communication means is restored to 100%; the transmission interval of the high-rate communication means is recovered to 100%; continuously judging whether the general charging communication means responds or not; the transmission interval of the high-charge communication means is shortened in proportion; the transmission interval of the high-rate communication means is recovered to 100%; and dynamically updating the sending sequence and the interval list.

Further, the method comprises the following steps:

the data link layer is further configured to: judging whether the upper computer supports a WIFI communication means for data communication; checking whether the data communication response of the WIFI communication means and the upper computer is correct or not; switching the next communication means LORA to carry out data communication; judging whether the upper computer supports an LORA communication means to carry out data communication; checking whether the data communication response of the LORA communication means and the upper computer is correct or not; switching the LAN to the next communication means for data communication; judging whether the upper computer supports the LAN communication means for data communication; checking whether the data communication response of the LAN communication means and the upper computer is correct; switching the data transmission radio station of the next communication means to carry out data communication; judging whether the upper computer supports GPRS communication means for data communication; checking whether the GPRS communication means and the upper computer data communication response are correct or not; switching the next communication means, namely, the Beidou short message for data communication; judging whether the upper computer supports the Beidou short message communication means for data communication; checking whether the Beidou short message communication means and the upper computer data communication response are correct or not; waiting for the next data to be sent to be generated.

By adopting the technical scheme, the invention has the beneficial effects that:

1. according to the sending sequence and the interval list, the packaged datagram is sent out from various communication means in sequence, the upper computer waits for response, the upper computer needs to respond to all the received datagram, and returns corresponding response in the original way to determine that the communication means is effective. The method has the advantages that various communication means are organically integrated, the main communication means and the standby communication means are not separated, the on-line communication and the starting are carried out simultaneously, and meanwhile, the effective technical effect is achieved.

2. Comparing the response datagram with the information of the latest receiving list, and if the same data record exists, not executing action; meanwhile, the upper computer analyzes and processes the data sent by the upper computer, and only returns the response and record processing of the communication means to the repeated information in the original way, but does not execute the action; if there is no identical data record, performing an action; the response data report is recorded to the most recently received list. When multiple communication means respond, only one communication means executes action, and for repeated information, the upper computer returns the response of the communication means as it is, but does not execute action, thereby solving the technical problems of repeated redundancy of data transmission and high reliability of information.

3. Finding a communication means sending record corresponding to the response according to the data generation time, the data generation sequence number and the data generation equipment number, and subtracting the sending time of the communication means according to the response time of the response data to obtain the response time of the corresponding communication means; dividing various communication means into three levels of free communication means, general charging communication means and high charging communication means, according to the response time of the communication means responded at this time, promoting the sending sequence of the communication means responded at this time at the respective corresponding level, dynamically generating a preferential sequence for the next datagram to be sent, and updating the sending sequence and the interval list for standby; according to the invention, according to a set rule, according to the communication cost from low to high, the communication response time from short to long and the communication transmission from fast to slow, an immediate and free communication means is preferentially adopted for carrying out data transmission with an upper computer.

4. Judging whether the free communication means have no response; if no response is made to the free communication means, the transmission interval of the general charging communication means is shortened in proportion, and the shortening value is as follows: 10% multiplied by the number of continuous non-response times of the free communication means, wherein the number of continuous non-response times of the free communication means is not more than 8; if the free communication means has a response, the transmission interval of the general charging communication means is restored to 100%; meanwhile, the sending interval of the high-charge communication means is recovered to 100 percent; dynamically updating the sending sequence and the interval list; continuously judging whether the general charging communication means have no response; if no response is made by the general charging communication means, the transmission interval of the high charging communication means is shortened proportionally, and the shortening value is as follows: 10% × the number of continuous non-response times of the general charging communication means, the number of continuous non-response times of the general charging communication means is not more than 8 times; if the general charging communication means has response, the transmission interval of the high charging communication means is recovered to 100%; and dynamically updating the sending sequence and the interval list. The sending time interval of the communication means is reduced by dynamically adjusting the sending time intervals of various communication means, the communication means with effective communication is preferably adopted to communicate with an upper computer by adopting timely and free communication means according to the conditions that the communication cost is from low to high, the communication response time is from short to long, and the communication transmission is from fast to slow, so that the transmission speed is improved, and the communication charge is reduced.

5. Whether the various communication means support communication and whether the response is correct are judged according to the priority sequence of the communication means which is timely, free, general and high in charge, and the proper communication means are selected for data priority transmission, so that the communication method of the invention can ensure that the transmission is timely and quick, the communication charge is low, and the various communication means are organically combined together. For free and quick communication means, single communication means is adopted for multiple sending, the sending success rate is improved, the use frequency of the charging communication means is reduced, and therefore the integral operation and maintenance cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a flow chart of a communication method for complementing the advantages of multiple master communication technologies according to the present invention;

FIG. 2 is a flow chart of the dynamic adjustment of data transmission time interval for three levels of communication means according to the present invention;

FIG. 3 is a block diagram of a communication device with complementary advantages of multiple master communication technologies;

FIG. 4 is a diagram of datagram composition content;

FIG. 5 is a flow chart of a method of communication by a free, general-charge, high-charge communication means in the embodiment;

FIG. 6 is a schematic diagram of a communication device with complementary advantages of multiple master communication technologies according to the present invention;

FIG. 7 is a logic diagram of a single device communicating with an upper computer through a plurality of base stations in the embodiment;

FIG. 8 is a functional hierarchy of a communication device with complementary advantages of multiple primary communication techniques according to the present invention;

fig. 9 is a comparison diagram of advantages and disadvantages of the conventional active/standby communication system and the communication method of the present invention in which advantages of multiple main communication techniques are complemented;

fig. 10 is a partially enlarged view of fig. 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention mainly solves the core problems of multilink, multiple sending and upper computer receiving: multi-link handover problems, data redundancy, data validity identification and handling, efficient interaction, and communication costs.

Host computer in this description: i.e. the data processing center, is a server, a monitoring terminal, etc.

LoRa: long Range Radio, a communication technology that uses a designated Radio band for free. The wireless power transmission system is obviously characterized in that the transmission distance is longer than that of other wireless modes under the same power consumption condition, and the low power consumption and the long distance are both realized; the distance is enlarged by 3-5 times compared with the traditional wireless radio frequency communication under the same power consumption.

LAN, Local Area Network, wired LAN.

Radio modem is also called radio transceiver or radio data module. Refers to a high-performance professional data transmission station realized by means of DSP (digital signal processing) technology and software radio technology.

CAN is a short name of Controller Area Network (CAN), developed by BOSCH company of germany, which is known to develop and produce automotive electronics, and finally becomes an international standard (ISO 11898), which is one of the most widely used field buses internationally.

Other radio frequency (rf) technologies are widely used in various fields, such as: television, radio, radar, ZigBee, automatic identification systems, etc.

The power line carrier is a communication method for performing voice or data transmission using a power line as an information transmission medium, and is a communication format specific to a power system.

A base station: is an interface device for a wireless communication device to access a wireless network and is also a form of radio station. A conventional mobile base station refers to a radio transceiver station for information transfer with a mobile phone terminal through a mobile communication switching center in a certain radio coverage area. The base station described herein is different from a conventional mobile communication base station in a certain degree, and refers to a device that has multiple wireless frequency band access modes, such as LoRa, ZigBee, bluetooth BLE, WiFi, data transfer radio, and the like, and also forwards data through communication modes such as GPRS, NB-IoT, and beidou short message.

Response time: that is, the time interval between the time when the device sends data in a certain communication mode (communication means) and the time when the device receives the host computer information responded by the communication mode.

And executing the action: the operation is to execute the corresponding operation of the content, such as switch control, data collection, and working parameter modification, according to the content of the datagram.

Multiple owners: the present invention is not provided with a standby communication technology, so the main communication modes are described in the present document, that is, the main communication modes coexist.

The BDS is a China Beidou satellite navigation system which is a global satellite navigation system developed by China and is the third mature satellite navigation system after GPS and GLONASS. The BDS has a remarkable characteristic that the BDS supports satellite positioning and also supports Beidou short message RDSS.

SDK, a "software development kit," is generally a collection of development tools provided to software engineers for creating application software for a particular software package, software framework, hardware platform, operating system, etc.; the tool kit is a tool kit which is provided for a third-party service provider and realizes a certain item and certain functions, and is a collection of a series of API libraries.

Example 1: fig. 1 and 4 show a communication method with complementary advantages of multiple master communication technologies, which includes the following steps:

recording the encapsulated datagram;

the technical problems that various communication means are organically integrated, main and standby are not separated, and meanwhile, the on-line and on-line communication is achieved, and meanwhile, the on-line communication is effective are solved.

if so, comparing the response datagram with the information of the latest receiving list, and if the same data record exists, not executing the action; meanwhile, the upper computer analyzes and processes the data sent by the upper computer, and only returns the response and record processing of the communication means to the repeated information in the original way, but does not execute the action;

if there is no identical data record, performing an action;

recording response data and reporting to a latest receiving list;

when multiple communication means respond, only one communication means executes action, and for repeated information, the upper computer returns the response of the communication means as it is, but does not execute action, thereby solving the technical problems of repeated redundancy of data transmission and high reliability of information.

according to the invention, according to a set rule, according to the communication cost from low to high, the communication response time from short to long and the communication transmission from fast to slow, an immediate and free communication means is preferentially adopted for carrying out data transmission with an upper computer.

after the response of the currently processing communication means is processed, whether the other communication means has a response needs to be judged, if the other communication means has a response, the data processing step is returned, namely the processing step is the same as the above, the other communication means becomes the currently processing communication means, and if the other communication means has no response, the data processing step is returned to judge whether the next data to be sent is generated.

Specifically, the method comprises the following steps:

judging whether the next data to be sent is generated;

The above is a processing mode of the communication means currently being processed, and because of a mode in which a plurality of communication means are simultaneously operating, when the current communication means is responding to data processing, other communication means may be receiving response data.

Further:

As shown in fig. 4, "time of generation, sequence number of generation, and device number" are used as key information for identifying repeated and redundant data by the system (including the upper computer) to distinguish the repeated and redundant data and avoid performing multiple operations on the repeated data. The 'generation time' is a UNIX time stamp of the data generation time, and is correspondingly Greenwich mean time, namely, the time from 1 month, 1 day, 0 hour, 0 minute and 0 second in 1970 to the time of the data generation time is automatically synchronized to a time service system such as an upper computer, GPRS, BDS and the like, and the priority sequence is as follows in sequence: the upper computer, the GPRS and the BDS are automatically synchronized to the Greenwich mean time in real time; the 'generation sequence number' is the sequence number generated by the current data report, is used together with 'generation time' and 'equipment number' and is used for identifying repeated data and response data by equipment and an upper computer; the device number is used for distinguishing single communication system devices, each device adopting the communication method has a unique device number, and the device number is solidified before delivery.

The communication method with the complementary advantages of the multi-master communication technology is characterized in that according to the communication cost from low to high, the communication response time from short to long, the communication transmission from high to low and the response speed from high to low, a method of selecting timely and free communication means is preferentially adopted, the currently suitable communication means is dynamically, automatically, sequentially and preferentially selected, the sending time interval is properly set, the consideration and balance of time efficiency and communication cost are solved, and the high cost performance of the operation and maintenance cost of a communication system is realized.

The advantages and disadvantages of the existing main and standby communication systems and the communication method with complementary advantages of the multi-main communication technology are compared:

as shown in fig. 9, compared with the main/standby communication system using 3 communication modes such as LAN, WIFI, GPRS and the like and the communication method with complementary advantages of the multiple main communication technologies, we generally sort the main/standby communication systems in order of LAN, WIFI and GPRS, and perform a primary selection on the communication means according to the communication cost. In this example, when the LAN and the WIFI are intermittent (for example, when the traditional operator covers the edge, such as an underground garage and an underground tunnel), and the same communication means is selected (communication cost), the base station device transmits a datagram to the upper computer after generating a datagram, and receives a time comparison of the response:

obviously, the communication method with the complementary advantages of the multi-master communication technology optimizes the judgment process of the failure of the communication means and the switching of the communication means, and establishes connection with the upper computer through handshaking by a proper communication means, thereby saving a large amount of time.

If the device transmitting the data needs to pass through a base station, the time gap is extended by a factor of 2.

If the device passes through a plurality of devices and then passes through the base station, the time difference is doubled after passing through one device or base station, and if the primary and standby communication systems are adopted, the time of reaching the upper computer finally becomes unacceptable.

In the above example, if the main/standby communication system needs to improve the reliability of communication, a GPRS communication means is preferentially selected in most cases, and the communication cost is much higher than that of a multi-main communication means, so that the intermittent WIFI and LAN are not sufficiently utilized; if the communication means of the WIFI and the LAN are tested to be effective at fixed time, the WIFI and the LAN are switched to when the communication means is effective, the GPRS is closed, the switching times are many, the switching time is long, and the timeliness is difficult to guarantee.

Example 2: fig. 2 shows a three-level communication means data transmission time interval dynamic adjustment method:

judging whether the free communication means have no response;

dynamically updating the sending sequence and the interval list;

and dynamically updating the sending sequence and the interval list.

The time interval of the two Beidou short message sending is set to be 8-70 seconds.

According to the condition of communication charge, the method is divided into three stages: free (a), general charge (B), high charge (C).

RS232, RS485, CAN, data radio stations, special lines, power carrier waves, special wireless communication networks, Bluetooth, WiFi, LoRa, ZigBee, 433M free frequency band communication means, other free radio frequency technologies and the like, and the data radio stations are classified into free levels;

GPRS, traditional short message (sms), NB-IoT, 2G, 3G, 4G, 5G, etc., classified for general charging;

big dipper short message, satellite phone, etc., classify to high charge.

Fig. 2 shows that "the response time of the communication means according to the response at this time is classified into three grades of" free, general charging and high charging ", the transmission sequence of the communication means according to the response at this time is promoted, a priority sequence is dynamically generated for the next datagram to be transmitted, the" list of transmission sequence and interval "is updated, and the control logic is processed once each time response data is received:

when a free communication means in a 'list of transmission sequence and interval' is found and no response is found in the previous communication, the transmission interval of a general charging communication means is shortened in proportion, and the value is as follows: 10% × number of consecutive non-responses by free communication means (8 times at most);

when a free communication means and a general charging communication means in a 'list of transmission sequence and interval' are found and no response is found in the previous communication, the transmission interval of the high charging communication means is shortened in proportion, and the value is as follows: 10% × value of number of consecutive non-responses (up to 8 times) by general charging communication means;

once the general charging communication means responds, the transmission interval of the high charging communication means is recovered to 100%;

when the free communication means responds, the transmission interval of the general fee communication means and the high fee communication means is restored to 100%.

The sending time interval of the communication means is reduced by dynamically adjusting the sending time intervals of various communication means, the communication means with effective communication is preferably adopted to communicate with an upper computer by adopting timely and free communication means according to the conditions that the communication cost is from low to high, the communication response time is from short to long, and the communication transmission is from fast to slow, so that the transmission speed is improved, and the communication charge is reduced.

Example 3: fig. 5 shows a method for communication by free, general-charge, high-charge communication means:

Whether the various communication means support communication and whether the response is correct are judged according to the priority sequence of free, general-charge and high-charge communication means, and the proper communication means is selected for data transmission so as to ensure that the communication method of the invention has the advantages of timely and quick transmission, low communication charge and organically combined various communication means.

If the free communication means does not support communication, whether the communication means such as GPRS, NB-IoT and Beidou short message communication means support communication or not and whether response is correct or not are judged, and proper communication means are selected for data transmission, so that the communication method disclosed by the invention can be ensured to be timely and fast in transmission and low in communication charge, and various communication means are organically combined together.

As shown in fig. 5, for free and fast communication means, WiFi, LAN, etc. (generally, WiFi and LAN are common communication networks, and existing communication networks do not affect the cost of new communication systems or devices connected thereto, so they are considered as free approximately), in the control, as shown in fig. 5, a single communication means is adopted for multiple (for example, a single communication means is used for 2 times) transmission, so that the success rate of transmission is increased, and the frequency of use of charging communication means (2G/3G/4G/5G conventional communication means or beidou short message, etc.) is reduced, thereby reducing the overall operation and maintenance cost.

Example 4: fig. 1, fig. 2, fig. 4 and fig. 5 show that the communication means transmits, responds, receives, processes data, and updates the transmission order and interval list, the latest reception list.

As shown in fig. 1 and 4, each communication means transmits the same data, and each communication means works independently, and the receiver matches and identifies the "generation time", "generation sequence number" and "device number" to reject the repeated and redundant data; after the receiver finishes the processing, the receiver responds by the communication means corresponding to the data source and returns the response in the original way, and the following rules are provided: as shown in fig. 1, the upper computer processes an up-sent datagram, and all the datagrams are responded by using the communication means of the source; when the upper computer needs to actively send data to the equipment, communication means to be used are listed in a mode of being latest, fastest and low-cost, the sending sequence, the interval list and the latest receiving list are updated according to the time sequence for the target equipment of each data and the communication mode of the target equipment and the upper computer, dynamic management is carried out, and the data are sent in sequence dynamically as shown in the flows of the figure 1, the figure 2 and the figure 5 when each data is generated; the upper computer and the equipment need to respond no matter whether the received datagram sent to the upper computer is repeated or not; performing an action with respect to a datagram that is not repeated; and for repeated datagrams, the equipment and the upper computer only execute control actions once. That is, when the upper computer responds, the original path responds reversely, for example, data sent from WiFi, the upper computer sends corresponding IP and PORT through the WiFi, and the original path responds reversely; similarly, the upper computer returns the response data to the initiator through the corresponding communication means. When the upper computer actively transmits data to the communication system, the original path responds in the reverse direction, similarly to the control logic and the sequence transmission of fig. 1, fig. 2 and fig. 5.

Example 5: fig. 3, 5, 6, and 7 illustrate communication logic of the device, the base station, and the upper computer:

the method for carrying out multiple communication with the upper computer is realized in several forms: multiple transmissions by a single communication means, single transmissions by multiple communication means, multiple transmissions by multiple communication means, and combinations thereof; the method adopts a method of optimizing communication means by dynamic optimization, and the specific control logic is as follows: the device in fig. 6 needs to communicate with the upper computer/server through the peripheral base stations 1, 2, 3, and 4, and is effective at the same time, so as to avoid absolute dependence on a certain communication means and improve the reliability of the system, specifically, after obtaining data of the device, a certain base station in fig. 6 determines whether WiFi communication is supported or not, if so, sends out the data from the WiFi communication means and waits for a response of the upper computer, and if a correct response of the upper computer is received, waits for the next data to be generated;

if no response or response error exists, judging whether the response is overtime, if overtime, sending the data out from the LoRa communication means and waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if no response or response error exists, judging whether the response is overtime, if overtime, sending the data out from the LAN communication means, waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if no response or response error exists, judging whether the response is overtime, if overtime, sending the data out from the WiFi communication means, waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if no response or response error exists, judging whether response is overtime, if overtime, sending out the data from the GPRS communication means, waiting for the response of the upper computer, and if correct response of the upper computer is received, waiting for the next data generation;

if no response or response error exists, judging whether the response is overtime, if overtime, sending the data out from the NB-IoT communication means, waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if no response or response error exists, judging whether the response is overtime, if overtime, sending out the data from the Beidou short message communication means, waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if there is no response or a response error, it is determined whether "response time out", and if so, a time out process … … is performed.

And the other 3 base stations independently complete the data transmission by adopting the same method.

Generally, 6 communication means are continuously used to communicate with an upper computer, and the communication is not successful, or equipment or the upper computer fails, and a traditional calculation method comprises the following steps: assuming that the success rate of each communication means is 80%, the corresponding failure rate is 20%, and the probability of simultaneous failure of 6 communication means is: 0.2^6=0.000064, i.e. the power is: 1-0.000064= 99.9936%.

Similarly, the same method and control logic are also adopted for the communication mode between the device and the base station, the device communicates with the upper computer through 4 common modes such as LoRa, bluetooth BLE, ZigBee and data transmission radio station, and the like, through the base station, the situation is more complicated, the combination of fig. 3 and fig. 6, device ← → base station 1 ← → upper computer, 4 combinations are provided between the device and the base station 1, 7 combinations are provided between the base station 1 and the upper computer, and 4 x 7=28 combinations are combined; device ← → base station 2 ← → upper computer, there are 4 combinations between device and base station 2, 7 combinations between base station 2 and upper computer, combine and be 28 combinations too; … …, the more base stations around the equipment, the more the combination, the traditional round of patrol mode, the more complex the switching processing logic of the communication means, the less the controllable the communication time of the single datagram, for the clear description, neglecting the communication mode of the base station and the upper computer temporarily, the equipment communicates with the upper computer through the base station 1, no response is given for a certain time, then automatically communicates with the upper computer through the base station 2 … …, one base station fails to communicate, data is directly forwarded through another base station, the communication failure rate is obviously reduced, namely the system reliability is improved.

As shown in fig. 7, after the device generates data, it is first determined whether the communication of the base station 1 is supported, if so, the data is sent out from the communication means of the base station 1 and waits for the response of the upper computer, and if a correct response of the upper computer is received, the next data generation is waited;

if no response or response error exists, judging whether the response is overtime, if overtime, sending the data out from the communication means of the base station 2 and waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if no response or response error exists, judging whether the response is overtime, if overtime, sending the data out from the communication means of the base station 3 and waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if no response or response error exists, judging whether the response is overtime, if overtime, sending the data out from the communication means of the base station 4 and waiting for the response of the upper computer, and if the correct response of the upper computer is received, waiting for the next data generation;

if there is no response or a response error, it is determined whether to "time out" the response, … …, and so on.

In the example, there is a special case that the device directly communicates with the upper computer through WiFi, LAN, GPRS, NB-IoT, etc., and does not pass through the base station in the middle (the base station itself shown in fig. 3 has functions of communicating, acquiring, and controlling devices), which is the fastest implementation scheme of this example, and is the most effective one.

In particular, in the implementation, the same communication means may appear multiple times and work independently, for example, the WiFi communication means and the LAN communication means may be ports of multiple WiFi communication means and LAN communication means (i.e. multiple WiFi hardware interfaces, or multiple LAN hardware interfaces, or a combination thereof) to transmit data to be transmitted to the upper computer in different transmission methods and paths from different WiFi hotspots and routers, and receive control data of the upper computer at the same time. For example, a certain communication system uses 4 LAN interfaces, simultaneously connects with broadband networks of china telecommunications, china communications, china mobile, great wall broadband, and simultaneously communicates with an upper computer, and preferentially takes the data information and communication mode returned first, so as to realize optimization of communication means by using the index of response speed; meanwhile, the influence of the failure of a router on the whole communication system is reduced to the minimum when the network of a broadband network service provider is disconnected.

Embodiment 6, as shown in fig. 3, 4, 6, 8, and 10, illustrates a communication apparatus with complementary advantages of multiple master communication technologies according to the present invention:

the communication device comprises a plurality of base stations which are communicated with an upper computer, and also comprises terminal equipment, wherein the terminal equipment can be communicated with the base stations, the base stations are provided with CPU modules and hardware ports, and the CPU modules are connected with the hardware ports and communicated with the upper computer;

the terminal equipment is used for receiving and transmitting data;

the base station is used for transmitting and receiving data;

the service layer is used for the user to call the data link layer;

the data link layer is to:

encapsulating data to be transmitted into datagrams; recording the encapsulated datagram;

sending out the encapsulated datagram from various communication means in sequence, and waiting for the upper computer to respond;

if there is no identical data record, performing an action;

recording response data and reporting to a latest receiving list;

judging whether the next data to be sent is generated;

judging whether other communication means answer the packaged datagram;

the upper computer is used for: all the received datagrams are responded, and corresponding responses are returned in the original way; to confirm that the communication means is valid and to confirm that the specific data content has been sent to the upper computer; the data sent is analyzed and processed, and the communication means response and recording process is returned only for the repeated information, but no action is executed.

Further:

the data link layer is further configured to: judging whether the free communication means responds or not; the transmission interval of the general charging communication means is shortened in proportion;

the transmission interval of the general charging communication means is restored to 100%; the transmission interval of the high-rate communication means is recovered to 100%; continuously judging whether the general charging communication means responds or not; the transmission interval of the high-charge communication means is shortened in proportion; the transmission interval of the high-rate communication means is recovered to 100%; and dynamically updating the sending sequence and the interval list.

Further, the method comprises the following steps:

The expansion of the CPU module in fig. 3, as shown in fig. 8, is divided into: an application layer, a service layer, a data link layer and an interface driving layer; the application layer provides an interface for applications that communicate and the underlying network for message transport. The service layer mainly aims at the operation of specific problems and processes data service logic. A data link layer (SDK) for encapsulating data to be exchanged into frames, performing encryption processing, managing and optimizing various communication means to obtain a better transmission sequence; decapsulating the received data, and removing repeated data, redundant data, and expired data; identifying and recording different communication means, and when the response is needed, the original path responds reversely; control the transmission sequence and rhythm of various communication means, process the priority sequence of a certain communication means, process exception, restart the communication link, etc. The driving layer mainly aims at a CPU and a peripheral interface hardware circuit and drives corresponding communication means to work, namely a driving method layer of a plurality of communication means. The data link layer encapsulates the "communication means optimization method for data transmission" in fig. 5, and provides the encapsulated data to the service layer, the application layer, and the interface driver layer in an SDK manner.

In particular, the CPU processing portion in fig. 3 is expanded, and the data link layer is also responsible for solving the timing control of the interface driving layer, so as to ensure that no conflict occurs between hardware interfaces. As shown in fig. 3. The data link layer obtains the operating states of various communication means according to the content shown in fig. 3, provides basic information, and provides decision-making data for the method; the performance of the communication system is optimized, and the cost performance of the operation and maintenance of the communication system is improved.

By adopting the communication method and the device with complementary advantages of the multi-master communication technology, the possible conflict between simultaneous working and simultaneous data receiving and sending of various communication means is solved, and the various communication means work independently without mutual influence; the method has the beneficial effects of synergy, high efficiency, high reliability, rapidness and low cost for the whole communication system; the beneficial effects of lower cost are more obvious in equipment systems which travel to and fro in the traditional mobile communication coverage area, the traditional mobile communication blind area and the available WiFi coverage area for a long time. Meanwhile, the method does not need to distinguish the use scenes, and reduces the requirements on professional technical ability of system users and system implementers.

After the implementation of the invention, the following beneficial effects additionally appear: for maintenance and overhaul, whether a certain base station works or not does not need to be concerned, a new base station is directly arranged, and then an abnormal base station is dismounted, so that data exchange between equipment and an upper computer is not influenced, communication is not interrupted, maintenance is not needed, and professional technicians are not needed; for a system with high reliability requirement, a communication base station can be properly and directly added near equipment, so that the reliability of the system is directly improved, and the method is simple and efficient.

The embodiment is a special case for dynamically switching communication means and optimizing communication means by aiming at a plurality of commonly used communication means such as a WiFi communication module, a LoRa communication module, a LAN Ethernet communication module, a data transmission radio station module, other wireless radio frequency technology modules, a 2G/3G/4G/5G conventional communication system module, a Beidou short message communication module and the like.

The above description is only a preferred and exemplary embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents, omissions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A communication method with complementary advantages of multi-master communication technology is characterized in that: the communication method comprises the following steps:

recording the encapsulated datagram;

the upper computer needs to respond to all the received datagrams, and returns corresponding responses in the original way; to confirm that the communication means is valid and to confirm that the specific datagram contents have been sent to the upper computer;

if there is no identical data record, performing an action;

recording response data and reporting to a latest receiving list;

judging whether the next data to be sent is generated;

2. The multi-master communication technology advantage-complementary communication method of claim 1, wherein:

the time interval of two times of data transmission of each communication means is set to be 0.1-70 seconds, and the time interval of two times of transmission of each data content is set to be 0.1-70 seconds;

3. The multi-master communication technology advantage-complementary communication method of claim 2, wherein: after the step of counting the number of times of the three levels of communication means with no response, further comprising the steps of:

judging whether the free communication means have no response;

dynamically updating the sending sequence and the interval list;

and dynamically updating the sending sequence and the interval list.

4. The multi-master communication technology advantage-complementary communication method of claim 2, wherein: the method comprises the following steps that according to a sending sequence and an interval list, encapsulated datagrams are sent out in sequence from a plurality of communication means, and after the step of waiting for the response of an upper computer, the method further comprises the following steps:

5. The multi-master communication technology advantage-complementary communication method of claim 4, wherein: after the step of proving that the LAN communication means fails to transmit the data operation data when the response time-out occurs, the method further comprises the following steps:

6. A communication device with complementary advantages of multiple master communication technologies, comprising: the communication device comprises a plurality of base stations which are communicated with an upper computer, and also comprises terminal equipment, wherein the terminal equipment can be communicated with the base stations, the base stations are provided with CPU modules and hardware ports, and the CPU modules are connected with the hardware ports and communicated with the upper computer;

the terminal equipment is used for receiving and transmitting data;

the base station is used for transmitting and receiving data;

the service layer is used for the user to call the data link layer;

the data link layer is to: initializing a sending sequence and interval list and a latest receiving list, presetting the sending sequence and interval list and the latest receiving list, storing a default sending sequence and sending interval, and emptying the latest receiving list; encapsulating data to be transmitted into datagrams; recording the encapsulated datagram; sending out the encapsulated datagram from various communication means in sequence, and waiting for the upper computer to respond; comparing the response datagram with the information of the latest receiving list, and if the same data record exists, not executing action; if there is no identical data record, performing an action; recording response data and reporting to a latest receiving list; finding a communication means sending record corresponding to the response according to the data generation time, the data generation sequence number and the data generation equipment number, and subtracting the sending time of the communication means according to the response time of the response data to obtain the response time of the corresponding communication means; the communication means are classified, and then the sending sequence and interval list are dynamically optimized: dividing various communication means into three levels of free communication means, general charging communication means and high charging communication means, according to the response time of the communication means responded at this time, promoting the sending sequence of the communication means responded at this time at the respective corresponding level, dynamically generating a preferential sequence for the next datagram to be sent, and updating the sending sequence and the interval list for standby; counting the number of the three levels of communication means without response; judging whether the next data to be sent is generated; judging whether other communication means answer the packaged datagram;

7. The multi-master communication technology advantage-complementary communication device of claim 6, wherein: the data link layer is further configured to:

judging whether the free communication means responds or not; the transmission interval of the general charging communication means is shortened in proportion; the transmission interval of the general charging communication means is restored to 100%; the transmission interval of the high-rate communication means is recovered to 100%; continuously judging whether the general charging communication means responds or not; the transmission interval of the high-charge communication means is shortened in proportion; the transmission interval of the high-rate communication means is recovered to 100%; and dynamically updating the sending sequence and the interval list.

8. The multi-master communication technology advantage-complementary communication device of claim 6, wherein: the data link layer is further configured to:

judging whether the upper computer supports a WIFI communication means for data communication; checking whether the data communication response of the WIFI communication means and the upper computer is correct or not; switching the next communication means LORA to carry out data communication; judging whether the upper computer supports an LORA communication means to carry out data communication; checking whether the data communication response of the LORA communication means and the upper computer is correct or not; switching the LAN to the next communication means for data communication; judging whether the upper computer supports the LAN communication means for data communication; checking whether the data communication response of the LAN communication means and the upper computer is correct; switching the data transmission radio station of the next communication means to carry out data communication; judging whether the upper computer supports GPRS communication means for data communication; checking whether the GPRS communication means and the upper computer data communication response are correct or not; switching the next communication means, namely, the Beidou short message for data communication; judging whether the upper computer supports the Beidou short message communication means for data communication; checking whether the Beidou short message communication means and the upper computer data communication response are correct or not; waiting for the next data to be sent to be generated.