CN102546827B - Receive and dispatch method and the device of multiple protocol data of vehicle-mounting terminals on the server - Google Patents
Receive and dispatch method and the device of multiple protocol data of vehicle-mounting terminals on the server Download PDFInfo
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- CN102546827B CN102546827B CN201210044075.0A CN201210044075A CN102546827B CN 102546827 B CN102546827 B CN 102546827B CN 201210044075 A CN201210044075 A CN 201210044075A CN 102546827 B CN102546827 B CN 102546827B
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Abstract
The present invention relates to a kind of method of receiving and dispatching various protocols data on the server, comprise the steps: the data that receiving terminal apparatus sends or check the data preparing to mail to terminal equipment, and obtain terminal number information wherein; According to described terminal number, search this terminal on described server registration in advance, its use protocol information; According to the protocol information found, the protocol format that the described data received are used by described terminal is converted to described first protocol format or the described data mailing to described terminal equipment are converted to by the first protocol format the protocol format that described terminal uses; The data changed described in buffer memory, for described server.The invention still further relates to a kind of device realizing said method.Implement method and the device of receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server of the present invention, there is following beneficial effect: cost that is lower to the requirement of terminal, whole system is lower.
Description
Technical field
The present invention relates to vehicle electric field, more particularly, relate to a kind of method and the device of receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server.
Background technology
Present automobile is loaded with many electric terminals (or equipment), these terminals are generally used for obtaining the state of each several part work on automobile and are stored by these status datas in appropriate and be sent to the server on backstage, so that the ruuning situation of administrative staff (normally fleet or carrier) monitor vehicle.But these are arranged on the communication protocol that the terminal on vehicle adopts may not be identical, and that is, these terminals may use different agreements to communicate.This makes background server when receiving the data of these terminals or data or instruction being sent to these terminals, may need the problem taking multiple transmission channel or occur identifying.In order to solve the problem, in the prior art, the method for improvement arranges the data that all terminals all send same host-host protocol, and all terminals also only accept data or the instruction of such form.This method makes to become higher to the requirement of terminal, adds the cost of terminal, decreases the choice of terminal.
Summary of the invention
The technical problem to be solved in the present invention is, for the defect that requirement is higher, cost is higher of the above-mentioned terminal of prior art, provide a kind of requirement to terminal lower, lower-cost method and the device receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of method of receiving and dispatching various protocols data on the server, comprise the steps:
A) data that send of receiving terminal apparatus or check and prepare to mail to the data of terminal equipment, and obtain terminal number information wherein; Wherein, described terminal number is when this terminal equipment is connected with server for the first time and registers, by the numbering of described server-assignment; This numbering is all carried in the described data being sent to this terminal or sent by this terminal;
B) according to described terminal number, search this terminal on described server registration in advance, its use protocol information; As terminal number as described in not finding, then judge that these data are invalid data;
C) according to the protocol information found, the protocol format that the described data received are used by described terminal is converted to the first protocol format or the described data mailing to described terminal equipment are converted to by the first protocol format the protocol format that described terminal uses; Above-mentioned conversion is by calling corresponding protocol conversion Interface realization;
D) data changed described in buffer memory, for described server;
Described steps A) comprise further:
A1) judge the data that receive or the data being ready for sending described terminal equipment whether legal, in this way, perform next step; Otherwise, return error message;
A2) resolve described data, obtain described terminal number information.
Receive and dispatch in the method for various protocols data on the server of the present invention, described steps A 1) in use regular expression to judge that whether described data legal.
Receive and dispatch in the method for various protocols data on the server of the present invention, described regular expression is by the terminal equipment of searching described transmission data or the whether prior registration and whether register name is identical judges that whether described data are legal in described server of the terminal equipment for preparing data to be sent to.
Receive and dispatch in the method for various protocols data on the server of the present invention, described step C) comprise the steps: further
C1) search and obtain described terminal equipment use agreement;
C2) call and use the format conversion of agreement to be the first protocol format by terminal equipment data or be converted to by the first protocol format the protocol conversion interface that terminal equipment uses protocol format;
C3) described data are converted to the form of the first protocol format or described terminal equipment use agreement.
In method of receiving and dispatching various protocols data on the server of the present invention, the data format of described first agreement comprises continuously arranged packet header, bag length, command word, data content and check digit, and the packet of each first protocol format is isometric packet.
The invention still further relates to a kind of device realizing said method, comprising:
Terminal number obtains module: the data sent for receiving terminal apparatus or inspection prepare the data mailing to terminal equipment, and obtain terminal number information wherein; Wherein, described terminal number is when this terminal equipment is connected with server for the first time and registers, by the numbering of described server-assignment; This numbering is all carried in the described data being sent to this terminal or sent by this terminal;
Terminal uses agreement to search module: for according to described terminal number, search this terminal on described server registration in advance, its protocol information used; As terminal number as described in not finding, then judge that these data are invalid data;
Data format conversion module: for according to the protocol information found, is converted to the first protocol format or the described data mailing to described terminal equipment is converted to by the first protocol format the protocol format that described terminal uses by the protocol format that the described data received are used by described terminal; Above-mentioned conversion is by calling corresponding protocol conversion Interface realization;
Data use module: for the data changed described in buffer memory, for described server;
Described terminal number obtains module and comprises further:
The legal judging unit of data: for judge the data that receive or the data being ready for sending described terminal equipment whether legal; By regular expression, the legal judging unit of described data judges that whether described data are legal;
Terminal number acquisition unit: for resolving described data, obtains described terminal number information.
In device of the present invention, described data format conversion module comprises further:
Terminal protocol searches unit: for search and obtain described terminal equipment use agreement;
Protocol conversion interface interchange unit: use the format conversion of agreement to be the first protocol format or the protocol conversion interface being converted to terminal equipment use protocol format by the first protocol format by terminal equipment data for calling;
Converting unit: for described data being converted to the form of the first protocol format or described terminal equipment use agreement.
In device of the present invention, the data that terminal sends are converted to the packet comprising continuously arranged packet header, wrap the first protocol format of length, command word, data content and check digit by described converting unit, and the packet of each first protocol format is isometric packet.
Implement method and the device of receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server of the present invention, there is following beneficial effect: because the agreement sending or receive data or instruction to terminal does not have requirement, on the contrary, just convert at the protocol format of server end to the data sending or receive; Meanwhile, server end also judges whether data are legal.Therefore, for whole system, it is lower to the requirement of terminal, the cost of whole system is lower.
Accompanying drawing explanation
Fig. 1 is the flow chart that the present invention receives and dispatches method in the method for multiple protocol data of vehicle-mounting terminals and device embodiment on the server;
Fig. 2 is the method flow diagram of the data that in described embodiment, server receiving terminal sends;
Fig. 3 is the method flow diagram that in described embodiment, server sends data to terminal;
Fig. 4 is the structural representation of device in described embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated.
As shown in Figure 1, in the method for receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server in the present invention and device embodiment, its method of receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server comprises the steps:
Step S11 is by the numbering obtaining this terminal in the data received or the data being ready for sending terminal: in the present embodiment, multiple terminal equipment (may be arranged on one or more automobile) be arranged on automobile is connected with a station server by network (normally wireless network), and this station server can be connected with other servers by network; Data on terminal equipment are all first be sent to this station server, then processing on that server if necessary in being forwarded on other servers or just, storing etc.; Similarly, the data that other servers send terminal equipment or instruction are also first be sent on this station server, then are forwarded on each terminal equipment by this station server.On each terminal equipment, the protocol format that data still use with this terminal equipment itself exists; And on above-mentioned server, the process of data and the data interaction carried out with other servers, these data are all exist with the form of the first agreement.So, receive the data of terminal equipment transmission at server after or before sending data or instruction to terminal equipment, all need to carry out format conversion to data.For server, during reception, need format conversion data used by terminal equipment to be the first protocol format, and data or instruction are optionally converted to the protocol format of terminal equipment use by the first protocol format by transmission.In this step, received or obtain in the data that send the terminal equipment that sends these data exactly by these or prepare the numbering of terminal equipment that these data or instruction is sent to.Terminal equipment numbering is present among these data, and the content of this step is taken out.In fact, when each terminal equipment is connected for the first time with server, all can register on the server, by server-assignment device numbering, meanwhile, the content of registration also can store by server.Protocol name that these contents comprise terminal equipment numbering, terminal equipment title, device location and this terminal equipment use etc.In the present embodiment, this step can be further subdivided into: judge the data that receive or the data being ready for sending described terminal equipment whether legal, in this way, perform next step; Otherwise, return error message; If data are legal, then resolve described data, obtain described terminal number information.In the present embodiment, regular expression is used to judge that whether data are legal.Regular expression is by searching the terminal equipment of described transmission data or preparing the whether prior registration and whether register name is identical judges that whether described data are legal in described server of the terminal equipment that data is sent to.The utilization of above-mentioned regular expression in judgement, makes above-mentioned deterministic process become more convenient and quick, can save the resource of query time and system.
Step S12, according to the numbering of above-mentioned terminal, searches the protocol type that this terminal uses: in this step, according to the terminal equipment numbering obtained in above-mentioned steps, and the protocol name that the terminal equipment searching its correspondence uses, and then obtain its protocol type.If the terminal equipment of this numbering of not searching in this step, then thinking that this terminal equipment is not at server registration, is illegality equipment, and its data are also invalid datas, and server will return error message and exit; If find the agreement of this device numbering and correspondence thereof, then perform next step.In the present embodiment, this step can be subdivided into three steps equally, be respectively search and obtain terminal equipment use agreement; Call and use the format conversion of agreement to be the first protocol format or the protocol conversion interface being converted to terminal equipment use protocol format by the first protocol format by terminal equipment data; Convert data to the form of the first protocol format or terminal equipment use agreement.
The protocol format that above-mentioned data are used by terminal is converted to the first protocol format or is converted to the protocol format of terminal use by the first protocol format by step S13: in this step, carry out the conversion of protocol format and the first protocol format found.When the data that above-mentioned server receiving terminal apparatus sends, be that the protocol format that data are used by terminal equipment is converted to the first protocol format; And server produced or the data that produced by other server or instruction are sent to a certain terminal equipment time, time data or instruction are converted to by the first protocol format the protocol format that this terminal equipment uses.In the present embodiment, these actions realize by calling corresponding protocol conversion interface (or module).
Step S14 stores the data after format transformation, for server: in this step, the data after conversion or instruction is stored, is normally stored in buffer storage, so that server is further processed it or sends it to terminal equipment.
It is worth mentioning that, in the present embodiment, above-mentioned first agreement converts data to packet, and the data format of this packet comprises continuously arranged packet header, bag length, command word, data content and check digit, and the packet of each first protocol format is isometric packet.
In the present embodiment, specifically, for server, be nothing but receive be arranged on data that the terminal equipment on automobile sends and use these data (comprise use on the server with by this transfer of data on other servers be connected with this server) and the data that sent certain terminal by server (comprising this server or other servers) or instruction are sent to terminal.Both of these case is similar in the present embodiment substantially, but also has the difference in some details.For this reason, in the present embodiment, above-mentioned two situations are described respectively.
Method flow diagram when Fig. 2 is the data of server receiving terminal transmission.In fig. 2, this method of receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server comprises the steps:
The data that step S201 receiving terminal sends: in this step, terminal equipment sends data to server, and server receives these data; In the present embodiment, terminal equipment is sent request and data to server by TCP channel or UDP channel.
Step S202 searches terminal number corresponding to data: in this step, and server searches the terminal number sending these data in the data received.As mentioned above, to be that terminal equipment is first be connected when also registering on the server these numberings with server, by server-assignment; The numbering of terminal equipment is informed to this terminal and is stored in server.When terminal equipment sends data to server, in the data that it sends, include the information of this numbering.In this step, server takes out the number information in above-mentioned data.In this step, if do not find above-mentioned numbering, then judge that the terminal equipment sending data is illegal connection, its data are invalid datas, so jump to step S210, the TCP that server closing is connected with this terminal equipment or UDP channel also exit this and process; If find the numbering of this terminal equipment, then illustrate that this terminal is legal, its data are also legal, perform next step.
It is the first protocol format that step S203 calls corresponding protocol conversion interface conversion: owing to having found the agreement of the terminal use of sending data in above-mentioned steps, that is, be aware of the agreement that the data that are currently received use, and the data that terminal is sent are when processing in the server, need use first protocol format.So, in this step, call corresponding protocol conversion interface, the protocol format that the data of above-mentioned reception are used by terminal equipment is converted to the first protocol format.The protocol conversion interface of correspondence said here in fact just refers to that the protocol format used by terminal is converted to the protocol conversion interface of the first protocol format.It is worth mentioning that, there is multiple such protocol conversion interface on the server, different protocol formatted data is converted to the first protocol format by these protocol conversion interfaces respectively.When finding the numbering of terminal equipment and find its agreement, the protocol conversion interface that this protocol format is converted to the first protocol format by server recalls, for changing the data be currently received.
The first protocol data write after step S204 conversion receives data buffering: in this step, data write that is converted, that become the first protocol format in above-mentioned steps is received data buffering, uses in order to step below.
Step S205 data transmission line journey: in this step, server accepts instruction or other servers transmit the request of coming, and above-mentioned data is sent in other servers or other application, for this reason, server produces data and sends thread, the data after above-mentioned conversion is sent.
The communication of step S206 server sends data: in this step, server carries out above-mentioned data transmission line journey, sends the data after above-mentioned conversion.
Does whether step S207 message send successful? in this way, step S109 is performed; Otherwise perform step S108: in TCP communication, if the other side receives data, a confirmation signal will be sent, after receiving this confirmation signal, think that data (namely message) have sent successfully, jump to step S209; Otherwise, think that data successfully do not send, perform step S208.
Step S208 inserts and sends buffering area wait transmission next time: in this step, because data are not successfully transferred to the equipment of the request of sending, so, by the transmission buffering area of the data after conversion stored in server, wait for transmission next time.
Step S209 terminates: in this step, owing to have sent data, exits this data receiver and transmission, and returns.
Step S210 closes TCP(or UDP corresponding to this terminal equipment) connect and return: perform when this step is actually invalid data when to find data in step S202, when data during invalid data, mean the terminal equipment of these transmission data be also illegal, do not register on the server, such terminal equipment can not connect on the server, for this reason, the TCP that server closing is connected with this terminal equipment or UDP channel, exit this and connect, and return.
Fig. 3 is that server sends data or the instruction method flow diagram to corresponding terminal.In figure 3, this method of receiving and dispatching multiple protocol data of vehicle-mounting terminals on the server comprises the steps:
Step S301 reception server message: in this step, server receipt message, this message may be that application different on this server is sent, and also can be that different servers sends; The data that will transmit and the terminal equipment that will be transferred to numbering is included in message.Except information source difference, in this step with step S201 unlike data format, in this step, these data formats are data formats of the first agreement, and this is because data are not from terminal equipment, but comes from server.
The terminal equipment numbering that step S302 inquiry is corresponding: in this step, server searches the terminal number of these data object terminals (i.e. data will be transferred to terminal) in the data received.As mentioned above, to be that terminal equipment is first be connected when also registering on the server these numberings with server, by server-assignment; The numbering of terminal equipment is informed to this terminal and is stored in server.In this step, server takes out the number information of the object terminal in above-mentioned data.If do not find above-mentioned numbering, then judge that the object terminal equipment of data is illegal connections, its data are invalid datas, so, jump to step S312, reply server and send data failure; If find the numbering of this terminal equipment, then illustrate that this terminal is legal, its data are also legal, perform next step.
The agreement that step S303 inquiry terminal equipment is corresponding: in this step, according to the numbering of object terminal, finds the agreement that this terminal uses on the server.
Step S304 calls corresponding protocol conversion interface and changes data: in this step, basic similar to step S203, the inverse transformation of difference to be the protocol conversion interface in this step the be protocol conversion interface in step S203 is the data data of different agreement form being converted to the first protocol format in step S203; And in this enforcement, be the data data of the first protocol format being converted to different agreement (it is consistent with the agreement that object terminal uses that yes).
The TCP channel that step S305 query facility is corresponding: in this step, whois lookup is connected with the TCP of above-mentioned purpose terminal, if can find, then performs step S306; Otherwise, jump to step S312.
Data write after step S306 conversion sends data buffering: in this step, by above-mentioned steps converted, become for the purpose of terminal institute use the data write of protocol format to receive data buffering, in order to step use below.
Step S307 data transmission line journey: in this step, server accepts instruction or other servers transmit the request of coming, and starts above-mentioned data to be sent to object terminal, for this reason, server produces data and sends thread, the data after above-mentioned conversion is sent.
The corresponding tcp module of step S308 invocation facility: in this step, server carries out above-mentioned data transmission line journey, the corresponding tcp module of invocation facility sends the data after above-mentioned conversion to above-mentioned purpose terminal.
Does whether step S309 message send successful? in this way, step S311 is performed; Otherwise, perform step S310: in TCP communication, if the other side receives data, a confirmation signal will be sent, after receiving this confirmation signal, think that data (namely message) have sent successfully, perform step S311; Otherwise, think that data successfully do not send, perform step S310.
Step S310 inserts and sends buffering area wait transmission next time: in this step, because data are not successfully transferred to object terminal, so, by the transmission buffering area of the data after conversion stored in server, wait for transmission next time.
Step S311 terminates: in this step, owing to have sent data, exits this data receiver and transmission, and returns.
Step S312 replys server and sends message failure: at this in step, return
In the present embodiment, also relate to a kind of device realizing said method, its structure as shown in Figure 4.In the diagram, this device comprise terminal number obtain module 41, terminal use agreement search module 42, data format conversion module 43 and data use module 44; Wherein terminal number obtains data that module 41 sends for receiving terminal apparatus or checks the data preparing to mail to terminal equipment, and obtains terminal number information wherein; Terminal uses agreement to search module 42 for according to described terminal number, search this terminal on described server registration in advance, its protocol information used; The protocol format that the described data received are used by described terminal for according to the protocol information found, is converted to described first protocol format or the described data mailing to described terminal equipment is converted to by the first protocol format the protocol format that described terminal uses by data format conversion module 43; Data use the data of module 44 for having changed described in buffer memory, for described server.
In the present embodiment, terminal number obtains module 41 and comprises further: the legal judging unit of data 411 for judge the data that receive or the data being ready for sending described terminal equipment whether legal; And by regular expression, the legal judging unit of data 411 judges that whether the data that maybe will send received are legal; Terminal number acquisition unit 412, for resolving above-mentioned data, obtains the terminal number information sending data or receive data.
And data format conversion module 43 comprises further: terminal protocol search unit 431 for search and obtain described terminal equipment use agreement; Protocol conversion interface interchange unit 432 is converted to the protocol conversion interface of the first protocol formatted data for calling described protocol formatted data; Converting unit 433 is converted to the packet comprising continuously arranged packet header, wrap the first protocol format of length, command word, data content and check digit for data terminal sent, the packet of each first protocol format is isometric packet.。
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (8)
1. receive and dispatch a method for various protocols data on the server, it is characterized in that, comprise the steps:
A) data that send of receiving terminal apparatus or check and prepare to mail to the data of terminal equipment, and obtain terminal number information wherein; Wherein, described terminal number is when this terminal equipment is connected with server for the first time and registers, by the numbering of described server-assignment; This numbering is all carried in the described data being sent to this terminal or sent by this terminal;
B) according to described terminal number, search this terminal on described server registration in advance, its use protocol information; As terminal number as described in not finding, then judge that these data are invalid data;
C) according to the protocol information found, the protocol format that the described data received are used by described terminal is converted to the first protocol format or the described data mailing to described terminal equipment are converted to by the first protocol format the protocol format that described terminal uses; Above-mentioned conversion is by calling corresponding protocol conversion Interface realization;
D) data changed described in buffer memory, for described server;
Described steps A) comprise further:
A1) judge the data that receive or the data being ready for sending described terminal equipment whether legal, in this way, perform next step; Otherwise, return error message;
A2) resolve described data, obtain described terminal number information.
2. method of receiving and dispatching various protocols data on the server according to claim 1, is characterized in that, described steps A 1) in use regular expression to judge that whether described data legal.
3. method of receiving and dispatching various protocols data on the server according to claim 2, it is characterized in that, described regular expression is by searching the terminal equipment of described transmission data or preparing the whether prior registration and whether register name is identical judges that whether described data are legal in described server of the terminal equipment that data is sent to.
4. method of receiving and dispatching various protocols data on the server according to claim 3, is characterized in that, described step C) comprise the steps: further
C1) search and obtain described terminal equipment use agreement;
C2) call and use the format conversion of agreement to be the first protocol format by terminal equipment data or be converted to by the first protocol format the protocol conversion interface that terminal equipment uses protocol format;
C3) described data are converted to the form of the first protocol format or described terminal equipment use agreement.
5. method of receiving and dispatching various protocols data on the server according to claim 4, it is characterized in that, the data format of described first agreement comprises continuously arranged packet header, bag length, command word, data content and check digit, and the packet of each first protocol format is isometric packet.
6. realize a device for the method for receiving and dispatching various protocols data as claimed in claim 1 on the server, it is characterized in that, comprising:
Terminal number obtains module: the data sent for receiving terminal apparatus or inspection prepare the data mailing to terminal equipment, and obtain terminal number information wherein; Wherein, described terminal number is when this terminal equipment is connected with server for the first time and registers, by the numbering of described server-assignment; This numbering is all carried in the described data being sent to this terminal or sent by this terminal;
Terminal uses agreement to search module: for according to described terminal number, search this terminal on described server registration in advance, its protocol information used; As terminal number as described in not finding, then judge that these data are invalid data;
Data format conversion module: for according to the protocol information found, is converted to the first protocol format or the described data mailing to described terminal equipment is converted to by the first protocol format the protocol format that described terminal uses by the protocol format that the described data received are used by described terminal; Above-mentioned conversion is by calling corresponding protocol conversion Interface realization;
Data use module: for the data changed described in buffer memory, for described server;
Described terminal number obtains module and comprises further:
The legal judging unit of data: for judge the data that receive or the data being ready for sending described terminal equipment whether legal; By regular expression, the legal judging unit of described data judges that whether described data are legal;
Terminal number acquisition unit: for resolving described data, obtains described terminal number information.
7. device according to claim 6, is characterized in that, described data format conversion module comprises further:
Terminal protocol searches unit: for search and obtain described terminal equipment use agreement;
Protocol conversion interface interchange unit: use the format conversion of agreement to be the first protocol format or the protocol conversion interface being converted to terminal equipment use protocol format by the first protocol format by terminal equipment data for calling;
Converting unit: for described data being converted to the form of the first protocol format or described terminal equipment use agreement.
8. device according to claim 7, it is characterized in that, the data that terminal sends are converted to the packet comprising continuously arranged packet header, wrap the first protocol format of length, command word, data content and check digit by described converting unit, and the packet of each first protocol format is isometric packet.
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| CN104125208B (en) * | 2013-10-15 | 2015-08-12 | 腾讯科技（深圳）有限公司 | Data transmission method and device |
| US10701186B2 (en) | 2015-10-14 | 2020-06-30 | Hytera Communications Corp., Ltd. | Protocol format conversion method and apparatus, and interface platform |
| WO2019010686A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳市元征科技股份有限公司 | Data processing method and data processing apparatus |
| CN107295014B (en) * | 2017-08-09 | 2020-04-21 | 广州市中海达测绘仪器有限公司 | Radio station communication protocol conversion method, device and system |
| CN107948193A (en) * | 2017-12-22 | 2018-04-20 | 大陆汽车投资（上海）有限公司 | Suitable for the vehicle shared server means of communication of multiple terminals type access |
| CN110113361A (en) * | 2019-05-29 | 2019-08-09 | 广州市粤峰高新技术股份有限公司 | A kind of unified processing system and method managing vehicle tower cloud platform log equipment |
| CN110930712B (en) * | 2019-12-30 | 2021-07-20 | 山东国惠安创智能物联发展有限公司 | Electric vehicle remote control method and system |
| CN116614565B (en) * | 2023-07-18 | 2023-10-10 | 河北六联通信科技有限公司 | Multi-protocol fusion communication method, platform, system and medium for scene law enforcement |
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| CN101013981A (en) * | 2006-01-12 | 2007-08-08 | 三星电子株式会社 | Middleware device and method of supporting compatibility of devices in home network |
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