CN101977275A - Method for obtaining on-board computer data by mobile communication terminal and mobile terminal thereof - Google Patents
Method for obtaining on-board computer data by mobile communication terminal and mobile terminal thereof Download PDFInfo
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- CN101977275A CN101977275A CN2010102667670A CN201010266767A CN101977275A CN 101977275 A CN101977275 A CN 101977275A CN 2010102667670 A CN2010102667670 A CN 2010102667670A CN 201010266767 A CN201010266767 A CN 201010266767A CN 101977275 A CN101977275 A CN 101977275A
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Abstract
The invention relates to a method for obtaining on-board computer data by a mobile communication terminal, which comprises the following steps of: transmitting a control command to the decoding device by the mobile terminal through a central processing unit; converting the control command into a protocol command specified by a bus of the on-board computer and transmitting the protocol command to the on-board computer; returning the data demanded by the protocol command to the decoding device; and converting and storing the returned data into a set format. The invention also discloses a mobile communication device for realizing the method. The method for obtaining the on-board computer data by the mobile communication terminal and the mobile terminal thereof have the advantage of data reading without special device and more convenient use.
Description
Technical field
The present invention relates to field of data transmission, more particularly, relate to method and portable terminal thereof that a kind of communication terminal is obtained the vehicle-mounted computer data.
Background technology
The development of modern electronic technology makes a large amount of electric control gears and transducers of using on the automobile, and this has great benefit for the control of automobile and the raising of performance thereof.Because a large amount of uses of electronic equipment on automobile, above-mentionedly be distributed in the state of automobile transducer everywhere, promptly obtain the operating state of automobile each several part in order to manage these vehicle electronic devices and to obtain, usually automobile is provided with central processing unit, and be connected with each vehicle electronic device or transducer by bus, such system be called usually OBD (On-Board Diagnostics, OBD).This system can collect the operating state of automobile each several part usually; for example, engine abnormity, engine temperature is too high or machine oil liquid level state or the like, and it is stored; when the state value of certain part exceeds set point, can give a warning to human pilot by various means usually.But these data all just are present within this OBD usually, need just can read with specialized apparatus.And the price of specialized apparatus is higher, and this makes the use of above-mentioned OBD be subjected to certain restriction, and uses inconvenient.
Summary of the invention
The technical problem to be solved in the present invention is, can only use special equipment to read, use inconvenient defective at the data of the above-mentioned OBD of prior art, provide a kind of data of using communication terminal to read OBD, communication terminal easy to use to obtain the method and the portable terminal thereof of vehicle-mounted computer data.
The technical solution adopted for the present invention to solve the technical problems is: construct the method that a kind of communication terminal is obtained the vehicle-mounted computer data, described communication terminal comprises the bus and decoding device described vehicle-mounted computer communication, that be connected with the central processing unit of described communication terminal by described vehicle-mounted computer; Described method comprises the steps:
A) described portable terminal arrives described decoding device by the central processing unit sending controling instruction;
B) described control command is converted to the protocol instructions of the bus defined of described vehicle-mounted computer, sends described protocol instructions to described vehicle-mounted computer;
C) return the data of described protocol instructions requirement to described decoding device;
D) described return data is converted to setting form and storage.
In method of the present invention, the bus of described vehicle-mounted computer is the OBD bus, and described decoding device comprises the OBD decoding device.
In method of the present invention, described steps A) further comprise:
A1) central processing unit of described communication terminal is received triggering signal, judges this triggering signal control instruction corresponding;
A2) take out described control command and be sent to described decoding device.
In method of the present invention, described control command is included in the AT instruction of the serial communication interface output of described central processing unit.
In method of the present invention, described step B) further comprise the steps:
B1) receive described control command, described control command is converted to described OBD agreement corresponding protocols instruction;
B2) arrive described vehicle-mounted computer by the described protocol instructions of OBD bus transfer with described vehicle-mounted computer.
In method of the present invention, described step D) further comprise the steps:
D1) receive described vehicle-mounted computer by described OBD bus data that beam back, that follow the OBD protocol format;
D2), make it be converted to described central processing unit and set the data of form and be stored in the storage device of described communication terminal with the described data decode of following the OBD form.
The invention still further relates to a kind of communication terminal, described communication terminal comprises a bus and decoding device described vehicle-mounted computer communication, that be connected with the central processing unit of described communication terminal by described vehicle-mounted computer; Described decoding device also comprise the control command that the transmission of the central processing unit of described communication terminal is come be converted to the bus protocol of following described vehicle-mounted computer protocol instructions instruction converting unit and the data that described vehicle-mounted computer returns by its bus are converted to the Date Conversion Unit of specified format data.
In communication terminal of the present invention, the bus of described vehicle-mounted computer is the OBD bus, and described decoding device comprises the OBD decoding device.
In communication terminal of the present invention, described decoding device is connected with described central processing unit by the serial communication interface of described central processing unit.
In communication terminal of the present invention, described communication terminal also comprises the control command generation unit that is used to produce described control command and the control command of described generation is sent to described central processing unit.
Implement communication terminal of the present invention and obtain the method and the portable terminal thereof of vehicle-mounted computer data, has following beneficial effect: because communication terminal is provided with the instruction that is used for the control command that central processing unit sends is converted to the vehicle-mounted computer bus protocol, the decoding device that return data on this bus is converted to specified format and stores simultaneously, make can be easily by communication terminal by reading of data in the vehicle-mounted computer, so it does not need the also readable data that get of isolated plant, its use is comparatively convenient.
Description of drawings
Fig. 1 is that communication terminal of the present invention is obtained method flow diagram among the method for vehicle-mounted computer data and the portable terminal embodiment thereof;
Fig. 2 is a mobile terminal structure schematic diagram among the described embodiment;
Fig. 3 is a code translator structural representation among the described embodiment.
Embodiment
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, obtain in the method and portable terminal embodiment method thereof of vehicle-mounted computer data at communication terminal of the present invention, it comprises the steps:
Step S11 produces control command: in this step, communication terminal is by the selection of user on the utilization interface, trigger control corresponding button or toggle area, produce the relative trigger signal, these triggering signals are sent to the central processing unit of above-mentioned communication terminal, central processing unit accesses these triggering signal control instruction corresponding after receiving these triggering signals.The generation of above-mentioned triggering signal be by under particular environment (or under specific working interface) to the different control buttons or the triggering of toggle area, make the level of one or more I/O interfaces of above-mentioned central processing unit change, and then make above-mentioned central processing unit on the port of appointment, obtain different input signals, central processing unit is obtained after these signals, search the pairing control command of these signals, and take out or form these control commands.
Step S12 sending controling instruction: in this step, the control command that above-mentioned central controller will take out or form be sent to be arranged on equally in this communication terminal and with decoding device that above-mentioned central processing unit is connected on.In the present embodiment, be connected by serial communication interface between above-mentioned central processing unit and the decoding device, so, produce during previous step is rapid and the instruction of transmission in this step all is the AT instruction that is suitable for transmitting on serial ports.
Step S13 instruction transformation: after decoding device receives the next AT instruction of above-mentioned central processing unit transmission, because the bus that decoding device also needs these instructions to be sent to vehicle-mounted computer gets on, so that vehicle-mounted computer can be understood the operation that the user need carry out, but, the bus of vehicle-mounted computer is not again the universal serial bus that central processing unit is connected with decoding device, therefore, in this step, above-mentioned decoding device need with its reception the instruction transformation of AT form for can on above-mentioned vehicle-mounted computer bus, transmit also the instruction that can be discerned by vehicle-mounted computer.In the present embodiment, decoding device is finished the transfer process of above-mentioned instruction type.
Step S14 sends the instruction after the conversion: in this step, decoding device will send on the bus of above-mentioned vehicle-mounted computer by its interface that is connected with vehicle-mounted computer through the instruction of its conversion.In the present embodiment, above-mentioned decoding device is to be connected with the bus of above-mentioned vehicle-mounted computer by USB interface or bluetooth, and the instruction that above-mentioned decoded device was changed also is sent to vehicle-mounted computer by above-mentioned interface.
Step S15 obtains corresponding data: above-mentioned vehicle-mounted computer receive send by above-mentioned USB interface or bluetooth, send and through the instruction of decoding device conversion by central processing unit, because with the bus protocol of vehicle-mounted self-checking system is consistent, this vehicle-mounted self-checking system can be discerned the meaning that these instructions are comprised.In this step, vehicle-mounted self-checking system obtains its corresponding value according to this instruction after receiving above-mentioned instruction.These data are that above-mentioned vehicle-mounted self-checking system is gathered at ordinary times and is stored in the memory cell in this vehicle-mounted self-checking system, need not go to gather after receiving above-mentioned instruction again.
Step S16 return data: in this step, the data that vehicle-mounted self-checking system will obtain in above-mentioned steps are according to the desired form of the bus of vehicle-mounted self-checking system, and the path by above-mentioned instruction transmits is sent to above-mentioned decoding device.
Step S17 Data Format Transform: decoding device is when receiving above-mentioned data of returning, because these data are the form that is suitable for vehicle-mounted self-checking system bus transfer, on general communication terminal, not only be not easy to show, even may not can show.Therefore in this step, decoding device is the form of appointment with the Data Format Transform from vehicle-mounted self-checking system that it receives.The data of these specified formats are convenient to show on general communication terminal, also are convenient to simultaneously store or show on other other equipment.Must use special equipment to read, show the situation of the data of vehicle-mounted self-checking system to break away from.
Step S18 specified format data send: in this step, above-mentioned decoding device sends it to above-mentioned central processing unit after with above-mentioned data transaction form, by central processing unit with these storage in the memory cell of this communication terminal.After these data are stored, the mobile communication unit can access it and be presented on its display interface, also can send it to other equipment for its use, these data can also be uploaded on the third-party server by wireless communication channel and store, so that download or the like when needing.
In the present embodiment, because vehicle-mounted computer is vehicle-mounted automatic checkout system (OBD), so the bus of vehicle-mounted computer is vehicle-mounted automatic checkout system bus, therefore, above-mentioned decoding device has comprised a vehicle-mounted automatic checkout system decoder.Because this central processing unit is connected by serial communication interface with this decoding device, data of transmitting between central processing unit and decoding device or instruction all meet the requirement of serial ports transmission simultaneously.
Also disclosed a kind of communication terminal in the present embodiment, as shown in Figure 2.Fig. 2 shows a communication terminal 20 that is connected with vehicle-mounted automatic checkout system 21, and this communication terminal 20 comprises central processing unit 201, instruction generation unit 202, memory cell 203 and decoding device 204.Wherein, above-mentioned central processing unit 201 is connected with above-mentioned instruction generation unit 202, memory cell 203 and decoding device 204 respectively.Central processing unit 201 and instruction generation units 202 connect by the I/O port, are connected with the bus of memory cell 203 by this central processing unit 201, are connected with the serial communication interface of decoding device 204 by this central processing unit 201.Above-mentioned instruction generation unit 202 is used for cooperating with central processing unit 201 and produces triggering signal and then produce the control command that is sent to decoding unit 204 according to the triggering signal of its generation; Memory cell 203 is used for store various kinds of data or instruction; And decoding device 204 is used for instructing between above-mentioned central processing unit 201 and vehicle-mounted automatic checkout system 21 and the conversion of data.What deserves to be mentioned is, in the present embodiment, connect by USB interface or bluetooth between above-mentioned communication terminal 20 and the vehicle-mounted automatic checkout system 21, therefore, above-mentioned communication terminal 20 and vehicle-mounted automatic checkout system 21 comprise the corresponding component of USB or bluetooth respectively.
As shown in Figure 3, decoding device 204 also comprises instruction converting unit 220 and Date Conversion Unit 221, wherein, converting unit 220 is used for the next control command of central processing unit 201 transmission of communication terminal 20 is converted to the protocol instructions of following vehicle-mounted automatic checkout system bus protocol; Date Conversion Unit 221 is used for the data that vehicle-mounted automatic checkout system is returned by its bus are converted to the Date Conversion Unit of specified format data.
Equally, in above-mentioned communication terminal 20, because vehicle-mounted computer is vehicle-mounted automatic checkout system, so the bus of vehicle-mounted computer is vehicle-mounted automatic checkout system bus, therefore, above-mentioned decoding device is actually an OBD (vehicle-mounted automatic checkout system) decoder.
In above-mentioned OBD decoder, when itself and vehicle-mounted computer pass through the OBD bus communication, data format meets the form that OBD requires, and several is real data in the middle of having only in its signal, and its front is a data head, its back is a check digit, this decoder takes out real data, and it is encapsulated in the AT instruction, again this AT instruction is sent to central processing unit, by central processing unit by in these AT instruction data being taken out and storage, for future use.In the present embodiment, above-mentioned data can be data nearly all, that OBD can obtain, for example, and engine speed, mileage number, diagnostic trouble code or the like.In this decoder, it sends different instructions again, obtains different parameters; And why this decoder sends different instructions, is because central processing unit has sent the different parameters reading requirement by the AT interface to it.Therefore, the method of the above-mentioned OBD of obtaining data roughly can be described as: communicating terminal 20 is selected by the diverse location on the data read interface on it, make central processing unit send different parameter reading requirement to this decoder, this decoder sends different data read instructions according to different parameter reading requirement to OBD, OBD reads after these data according to the reverse central processing unit that is transferred in above-mentioned path, and central processing unit takes out data and preserves.What deserves to be mentioned is,, not only can read the parameter that OBD has, in some cases, also can realize other function, for example, can eliminate diagnostic trouble code that has among the OBD or the like according to above-mentioned approach.
In addition, because the kind of the onboard system bus on the automobile is more, so, in the present embodiment, data format between above-mentioned decoder and the vehicle-mounted bus also can be provided with, these are provided with and will directly change the data format of above-mentioned decoder and vehicle-mounted bus communication, simultaneously also pointed out these instructions or the data returned in, the particular location of the form of its data head, figure place and data.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.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 (10)
1. a communication terminal is obtained the method for vehicle-mounted computer data, it is characterized in that described communication terminal comprises the bus and decoding device described vehicle-mounted computer communication, that be connected with the central processing unit of described communication terminal by described vehicle-mounted computer; Described method comprises the steps:
A) described portable terminal arrives described decoding device by the central processing unit sending controling instruction;
B) described control command is converted to the protocol instructions of the bus defined of described vehicle-mounted computer, sends described protocol instructions to described vehicle-mounted computer;
C) return the data of described protocol instructions requirement to described decoding device;
D) described return data is converted to setting form and storage.
2. method according to claim 1 is characterized in that, the bus of described vehicle-mounted computer is the OBD bus, and described decoding device comprises the OBD decoding device.
3. method according to claim 2 is characterized in that, described steps A) further comprise:
A1) central processing unit of described communication terminal is received triggering signal, judges this triggering signal control instruction corresponding;
A2) take out described control command and be sent to described decoding device.
4. method according to claim 3 is characterized in that, described control command is included in the AT instruction of the serial communication interface output of described central processing unit.
5. method according to claim 4 is characterized in that, described step B) further comprise the steps:
B1) receive described control command, described control command is converted to described OBD agreement corresponding protocols instruction;
B2) arrive described vehicle-mounted computer by the described protocol instructions of OBD bus transfer with described vehicle-mounted computer.
6. method according to claim 5 is characterized in that, described step D) further comprise the steps:
D1) receive described vehicle-mounted computer by described OBD bus data that beam back, that follow the OBD protocol format;
D2), make it be converted to described central processing unit and set the data of form and be stored in the storage device of described communication terminal with the described data decode of following the OBD form.
7. a communication terminal is characterized in that, described communication terminal comprises a bus and decoding device described vehicle-mounted computer communication, that be connected with the central processing unit of described communication terminal by described vehicle-mounted computer; Described decoding device also comprise the control command that the transmission of the central processing unit of described communication terminal is come be converted to the bus protocol of following described vehicle-mounted computer protocol instructions instruction converting unit and the data that described vehicle-mounted computer returns by its bus are converted to the Date Conversion Unit of specified format data.
8. communicating terminal according to claim 7 is characterized in that, the bus of described vehicle-mounted computer is the OBD bus, and described decoding device comprises the OBD decoding device.
9. communicating terminal according to claim 8 is characterized in that, described decoding device is connected with described central processing unit by the serial communication interface of described central processing unit.
10. communicating terminal according to claim 9 is characterized in that, described communication terminal also comprises the control command generation unit that is used to produce described control command and the control command of described generation is sent to described central processing unit.
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Address after: 100015 2nd floor, gate 1, building 12, No.5 Jiangtai Road, Chaoyang District, Beijing Patentee after: ZhongPuDa Technology Co.,Ltd. Address before: 100015 2nd floor, gate 1, building 12, No.5 Jiangtai Road, Chaoyang District, Beijing Patentee before: BEIJING ZHONGPUDA TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |