CN102081394A - Method and device for acquiring vehicle status information - Google Patents
Method and device for acquiring vehicle status information Download PDFInfo
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- CN102081394A CN102081394A CN2010106051776A CN201010605177A CN102081394A CN 102081394 A CN102081394 A CN 102081394A CN 2010106051776 A CN2010106051776 A CN 2010106051776A CN 201010605177 A CN201010605177 A CN 201010605177A CN 102081394 A CN102081394 A CN 102081394A
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Abstract
The invention relates to a method for acquiring vehicle status information, comprising the following steps: acquiring the vehicle status information by an on-board diagnostics (OBD) data bus on a vehicle; updating existing vehicle status information stored on a memory cell; and sending the vehicle status information in the memory cell through established connection. The method and device provided by the embodiment have the beneficial effects that the acquired and stored vehicle status information processed by each electronic control unit (ECU) is sent out without detection of special detection equipment for the status of multiple types of vehicles when external connection is established, thus lowering the cost, and being applied to different types of vehicles.
Description
Technical field
The information of the present invention relates to obtains the field, more particularly, relates to a kind of car status information adquisitiones and device.
Background technology
High speed development along with automotive electronic technology, present passenger car, commercial vehicle more than 95% all disposed the ECU ECU (Electrical Control Unit), and the quantity of ECU is also more and more, and deal with the data of different scopes separately, mainly be responsible for the engine power part such as Engine ECU, ABS ECU mainly is responsible for the related application of braking automobile part etc.A medium-to-high grade passenger car, the quantity of ECU can reach the 30-100 kind.The automobile fieldbus from early stage K-LINE, develop into the CAN bus, and the application of CAN bus more and more becomes the main force of automobile bus also in continuous development.The diagnose interface of automobile is also fought separately by originally car load factory, progressively form unification to the back, present 95% producer all adopts the joint of OBD II-16PIN, and joint defines also progressively standard, but it is self-defined also to exist a large amount of car load factories, and this brings difficulty with regard to the after-sales service of giving automobile.The configuring condition of ECU also is a more complicated on automobile, and some electric-control systems adopt the communications of CAN line, and some electric-control systems adopt K-LINE communication or other mode again.And also disunity of the distribution on diagnose interface.The data that these ECU handle are exactly the status information of automobile, read the working condition that these status informations have also just been known the current each several part of automobile, this for vehicle failure to search for judging be indispensable.In present technology, these data are compiled by fieldbus by each ECU, are obtained in maintenance sites by special inspecting equipment.But special-purpose checkout equipment is comparatively expensive, and each other can not be general, and this has increased the equipment cost of vehicle maintenance undoubtedly.
Summary of the invention
The technical problem to be solved in the present invention is, the said equipment cost at prior art is higher, the special inspecting equipment between the different model can not general defective, and a kind of lower-cost, the car status information adquisitiones and device that can be used for different vehicle is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of adquisitiones of car status information, comprise the steps:
A) obtain vehicle state information by the OBD data bus on the vehicle;
B) update stored in current car status information on the storage unit;
C) by the connection of having set up the car status information on the described storage unit is sent.
In car status information adquisitiones of the present invention, described steps A) further comprise the steps:
A1) judge the configuration information that whether stores this vehicle on the described storage unit, if any, execution in step A3); Otherwise, execution in step A2);
A2) obtain and store this car configuration information;
A3) use this car configuration information, the connection parameter that is connected with described OBD data bus is set, and obtain the car status information of this car one by one.
In car status information adquisitiones of the present invention, described steps A 2) further comprise:
A21) the pin position that connects the OBD diagnose connector on the described OBD data bus is judged one by one, determined to be used in the described OBD diagnose connector pin position that is connected with described OBD data bus;
A22) information that receives by described OBD data bus is judged, determined the communications protocol of its use;
A23) information that vehicle electrically controlling system sent is judged one by one, determined employed ECU quantity in its vehicle configuration.
In car status information adquisitiones of the present invention, the quantity of ECU in communications protocol that the definition of pin position that described vehicle configuration information is vehicle OBD diagnose connector, vehicle ECU use and the vehicle.
In car status information adquisitiones of the present invention, described steps A 2) in its vehicle configuration information stores that obtains in flash memories or EEPROM.
In car status information adquisitiones of the present invention, described step C) in, described having connected to being connected with wireless telecommunications that external unit is set up.
The invention still further relates to a kind of car status information acquisition device, comprise the car status information reading device that is used for obtaining vehicle state information by the OBD data bus on the vehicle; Be used to store the storage unit of data; Be used to update stored in the data update apparatus of the current car status information on the storage unit; Be used for the car status information on the described storage unit being sent data transmission device by the connection of having set up.
In car status information acquisition device of the present invention, described car status information reading device further comprises: the configuration information judging unit that is used to judge the configuration information that whether stores this vehicle on the described storage unit; The configuration information that is used to obtain and store this car configuration information is obtained the unit; Be used to use connection parameter that this car configuration information, setting be connected with described OBD data bus and the status information that obtains the car status information of this car one by one to obtain the unit.
In car status information acquisition device of the present invention, described vehicle configuration information obtains the unit and further comprises: the pin position that is used for OBD diagnose connector that described OBD data bus is connected is judged one by one and is determined that described OBD diagnose connector is used for the interface pin position judgment sub-unit of the pin position that is connected with described OBD data bus; Be used for the information that receives by described OBD data bus is judged and determined the communications protocol judgment sub-unit of the communications protocol of its use; The ECU number of locations judgment sub-unit of employed ECU quantity of its vehicle configuration and position is judged and determined to the information that is used for that vehicle electrically controlling system is sent one by one.
In car status information acquisition device of the present invention, it is characterized in that described car status information acquisition device is arranged in the GPS locating device of described vehicle installation.
Implement car status information adquisitiones of the present invention and device, has following beneficial effect: owing to the car status information that obtains each ECU processing and with its storage, when connecting, send, so do not need special-purpose checkout equipment just can the state of multiple model vehicle to be detected with the external world.Therefore lower, the vehicle that can be used for different model of its cost.
Description of drawings
Fig. 1 is the process flow diagram that car status information obtains among car status information adquisitiones of the present invention and the device embodiment;
Fig. 2 is to the judgement of vehicle configuration information and obtain process flow diagram among the described embodiment;
Fig. 3 is a car status information acquisition device structural representation among the described embodiment;
Fig. 4 is a car status information acquisition device 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, in car status information adquisitiones of the present invention and device embodiment, its method that obtains vehicle configuration information comprises the steps:
Does step S11 judge whether to store vehicle configuration information? in this way, jumping to step S13 carries out; As there not being execution in step S12: in the present embodiment, the conduct of this step once obtains the beginning of information of vehicles, appears to begin to obtain in the information of vehicles.That is to say, when obtaining car status information, all can carry out this step at every turn, for example, power on or when beginning to obtain information of vehicles.In this step, at first to do, judge whether once to have obtained and stored the configuration information of vehicle exactly, if these vehicle configuration information should be to be stored on the certain position of designated memory locations so; If do not obtain and store the configuration information of above-mentioned vehicle, then should be blank on the desired location of designated memory locations.So, in this step, as long as judge that whether storing data on the desired location of designated memory cell just can judge the configuration information of whether obtaining vehicle.As mentioned above,, then jump to step S13 and carry out, access the configuration information of these vehicles if judge the configuration information of once obtaining and store vehicle; If judge the configuration information that had not got vehicle, then continue execution in step S12, the vehicle configuration information that reaches above-mentionedly.
Step S12 obtains and the store car configuration information: if do not find configuration information in above-mentioned designated memory locations, just also do not obtain the configuration information of vehicle, in this step, just need obtain the configuration information of this vehicle, can take a series of substep to obtain this vehicle configuration information in this step, specifically after a while detailed description will arranged.In this step, obtain the configuration information of this vehicle after, the configuration information of this vehicle is stored in the desired location of above-mentioned designated memory cell, be convenient in the step of back, call.As for the concrete step that obtains above-mentioned vehicle configuration information, after a while detailed description will arranged.
Step S13 accesses vehicle configuration information, communications parameter with vehicle ECU ECU (Electrical Control Unit) is set: in this step, access above-mentioned vehicle configuration information (no matter this vehicle configuration information just store before being or in step S12, just obtain), and utilize this vehicle configuration information that communications parameter with vehicle OBD data bus is set, for example to the definition of each pin of being connected with vehicle OBD data bus or OBD, communications protocol or the like.These are arranged so that and can carry out effective communication with vehicle OBD data bus.
Step S14 obtains the status information of being handled by its each ECU in the vehicle ECU ECU (Electrical Control Unit) and refreshes the status information of storage: in this step, communication by each ECU ECU (Electrical Control Unit) on the vehicle, carry out message exchange with each ECU ECU (Electrical Control Unit), so just can obtain the status information that each ECU is handling or handling recently in above-mentioned each ECU ECU (Electrical Control Unit), these status informations have just been represented the state of current vehicle; That is to say, by with mutual (these are undertaken by OBD data bus or OBD test bench alternately) of each ECU ECU (Electrical Control Unit), the information that obtains can be represented current vehicle state information.After obtaining these vehicle state information, leave these information the assigned address of storer in, these assigned addresses are used for depositing these specific datas, and the position that each status information is deposited is all fixed.No matter on these fixed positions of storer whether information is arranged, after obtaining these information, all will there be these positions, if there are data these positions before, then refresh these data, store the current status information that obtains; If these positions do not have data, then the data with the current status information that obtains directly store the said fixing position into.
Step S15 sends to external unit by the interface channel the set up car status information after with above-mentioned refreshing: after obtaining above-mentioned current vehicles status information, these information transmission just can need be shown to outside equipment, make people can judge the state of vehicle.In this step, above-mentioned transmission is by the interface channel of setting up these data transmission to be gone out.In the present embodiment, above-mentioned interface channel is wired or wireless interface channel, for example, and wireless employing bluetooth passage or the like.Why setting up wireless interface channel, is just can obtain current car status information without line, and this can further reduce operation steps.
As shown in Figure 2, in above-mentioned steps, step S12 further comprises the steps:
Step S21 judges the pin position that is used for communication in the vehicle OBD interface: in this step, judge the pin position that is used for communication in the vehicle OBD test bench.The OBD test bench is a special interface, and it is provided with a plurality of pin.But specific to a kind of or vehicle, the pin position on the above-mentioned OBD test bench is not that each all can be used.In this step, pass through exactly.The OBD interface is the female seat of 16 pin positions, by international standard, it is power supply or ground or the pin that can not be taken by producer that some pin positions are arranged, so the communication transmission medium that can use flexibly that stays to producer is not a lot of just, we with the different pin position on relay or the electronic switch connection OBD seat, set up physical connection with ECU with known different ECU communications protocol on different pin positions, if can successfully set up information interaction, judge that then this ECU has been configured in this car type.The diagnosis communication agreement of ECU reaches the pin position of above-mentioned judgement vehicle OBD interface to judging one by one of each OBD interface pin position.In other embodiments, when not being to connect the OBD test bench but when directly being connected, also can directly judge the line that is used for communication in its bus with its bus.
Step S22 judges the communications protocol that the ECU test bench uses: in this step, utilize the regulation of various protocols to test one by one by the data that the OBD interface is received, and obtain the communications protocol of its use.Communications protocol is mainly CAN bus and K line mode, and we use known CAN line communications protocol and K line communications protocol and ECU, and to set up communication information mutual)
Step S23 judges the quantity of ECU in the ECU ECU (Electrical Control Unit): in this step, judge ECU quantity in this vehicle configuration by the above-mentioned data that obtained.The method of the quantity of ECU or step in the ECU ECU (Electrical Control Unit) when being undertaken alternately by CAN line or K line communications protocol and ECU, if can successfully carry out information interaction, represent that then this car disposes this ECU ECU (Electrical Control Unit).
The data storage that step S24 obtains above-mentioned judgement is in storage unit: in this step, with the above-mentioned data that obtain, comprise quantity and the position of ECU, its storage is hindered in storage unit, be convenient to calling of down-stream.
In the present embodiment, also relate to a kind of device of obtaining car status information, its structure as shown in Figure 3, this device comprise be used for by the OBD data bus on the vehicle obtain vehicle state information car status information reading device 1, be used to store data storage unit 4, be used to update stored in the data update apparatus 2 of the current car status information on the storage unit 4 and be used for the car status information on the described storage unit being sent data transmission device 3 by the connection of having set up.Wherein car status information reading device 1 further comprises the configuration information judging unit 11 that is used to judge the configuration information that whether stores this vehicle on the described storage unit, the configuration information that is used to obtain and store this car configuration information is obtained unit 12, be used to use connection parameter that this car configuration information, setting be connected with described OBD data bus and the status information that obtains the car status information of this car one by one to obtain unit 13.
As shown in Figure 4, above-mentioned vehicle configuration information obtains unit 12 and further comprises: the interface pin position judgment sub-unit 131 that is used for the pin position of described OBD data bus is judged one by one and determined the pin position that described OBD data bus interface is used to communicate by letter; Be used for the information that receives by described OBD data bus interface is judged and determined the communications protocol judgment sub-unit 132 of the communications protocol of its use; The ECU number of locations judgment sub-unit 133 of the employed ECU quantity of its ECU ECU (Electrical Control Unit) is judged and determined to the information that is used for that vehicle electrically controlling system is sent one by one.
What deserves to be mentioned is that above-mentioned car status information acquisition device is arranged in the GPS locating device of described vehicle installation.Like this, just can realize obtaining of car status information with regard to need on the vehicle of above-mentioned installation GPS locating device, not reinstalling other equipment; Meanwhile, in above-mentioned GPS, also be provided with and use wireless communication module, this makes that above-mentioned car status information acquisition device can be when entering maintenance factory, need not connect the OBD test bench, but directly just can connect with the checkout equipment of maintenance factory by Wireless transmission mode, thereby read the car status information in the above-mentioned car status information acquisition device, be convenient to the maintenance personal and judge vehicle-state, take appropriate measures.
The above embodiment has only expressed several embodiment 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 domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the adquisitiones of a car status information is characterized in that, comprises the steps:
A) obtain vehicle state information by the OBD data bus on the vehicle;
B) update stored in current car status information on the storage unit;
C) by the connection of having set up the car status information on the described storage unit is sent.
2. the adquisitiones of car status information according to claim 1 is characterized in that, described steps A) further comprise the steps:
A1) judge the configuration information that whether stores this vehicle on the described storage unit, if any, execution in step A3); Otherwise, execution in step A2);
A2) obtain and store this car configuration information;
A3) use this car configuration information, the connection parameter that is connected with described OBD data bus is set, and obtain the car status information of this car one by one.
3. the adquisitiones of car status information according to claim 2 is characterized in that, described steps A 2) further comprise:
A21) the pin position that connects the OBD diagnose connector on the described OBD data bus is judged one by one, determined to be used in the described OBD diagnose connector pin position that is connected with described OBD data bus;
A22) information that receives by described OBD data bus is judged, determined the communications protocol of its use;
A23) information that vehicle electrically controlling system sent is judged one by one, determined employed ECU quantity in its vehicle configuration.
4. the adquisitiones of car status information according to claim 3 is characterized in that, the quantity of ECU in communications protocol that the definition of pin position that described vehicle configuration information is vehicle OBD diagnose connector, vehicle ECU use and the vehicle.
5. the adquisitiones of car status information according to claim 4 is characterized in that, described steps A 2) in its vehicle configuration information stores that obtains in flash memories or EEPROM.
6. the adquisitiones of car status information according to claim 5 is characterized in that, described step C) in, described having connected to being connected with wireless telecommunications that external unit is set up.
7. a car status information acquisition device is characterized in that, comprises the car status information reading device that is used for obtaining by the OBD data bus on the vehicle vehicle state information; Be used to store the storage unit of data; Be used to update stored in the data update apparatus of the current car status information on the storage unit; Be used for the car status information on the described storage unit being sent data transmission device by the connection of having set up.
8. car status information acquisition device according to claim 7 is characterized in that, described car status information reading device further comprises: the configuration information judging unit that is used to judge the configuration information that whether stores this vehicle on the described storage unit; The configuration information that is used to obtain and store this car configuration information is obtained the unit; Be used to use connection parameter that this car configuration information, setting be connected with described OBD data bus and the status information that obtains the car status information of this car one by one to obtain the unit.
9. car status information acquisition device according to claim 8, it is characterized in that described vehicle configuration information obtains the unit and further comprises: the pin position that is used for OBD diagnose connector that described OBD data bus is connected is judged one by one and is determined that described OBD diagnose connector is used for the interface pin position judgment sub-unit of the pin position that is connected with described OBD data bus; Be used for the information that receives by described OBD data bus is judged and determined the communications protocol judgment sub-unit of the communications protocol of its use; The ECU number of locations judgment sub-unit of employed ECU quantity of its vehicle configuration and position is judged and determined to the information that is used for that vehicle electrically controlling system is sent one by one.
10. according to the adquisitiones of each described car status information of claim 7-9, it is characterized in that described car status information acquisition device is arranged in the GPS locating device of described vehicle installation.
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| CN2010106051776A CN102081394A (en) | 2010-12-24 | 2010-12-24 | Method and device for acquiring vehicle status information |
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| CN103688242A (en) * | 2011-07-19 | 2014-03-26 | 宝马股份公司 | Control device for motor vehicle, programming device and programming system |
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| CN111693294A (en) * | 2020-05-15 | 2020-09-22 | 深圳市元征科技股份有限公司 | Vehicle detection method and device, terminal equipment and storage medium |
| CN111858227A (en) * | 2019-12-31 | 2020-10-30 | 北京骑胜科技有限公司 | Equipment state monitoring method, device, equipment and storage medium |
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| CN111897752A (en) * | 2019-05-05 | 2020-11-06 | 唐山明天科技有限公司 | AI technology-based OBD port self-adaption device |
| CN111858227A (en) * | 2019-12-31 | 2020-10-30 | 北京骑胜科技有限公司 | Equipment state monitoring method, device, equipment and storage medium |
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Application publication date: 20110601 |