CN103513593B - The method and apparatus controlled is realized in dual controller scene - Google Patents
The method and apparatus controlled is realized in dual controller scene Download PDFInfo
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- CN103513593B CN103513593B CN201310464288.3A CN201310464288A CN103513593B CN 103513593 B CN103513593 B CN 103513593B CN 201310464288 A CN201310464288 A CN 201310464288A CN 103513593 B CN103513593 B CN 103513593B
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Abstract
The embodiment of the invention discloses a kind of method and apparatus realizing controlling in dual controller scene.Method is wherein: obtain the controller indicating bit to controlling in message to be packaged; Described indicating bit and the control bit set for controller are carried out logical OR computing, obtains operation result; When encapsulating described control message, using described operation result as the indicating bit to controlling in message to be packaged; Wherein, the control bit being two controller settings is different, when the control bit for the first controller setting is 0, and for second controller setting control bit be 1 time, system is controlled separately by the first controller, when for first controller setting control bit be 1, and for second controller set control bit be 0 time, system is controlled separately by second controller.According to the embodiment of the present invention, the control disorder problem that dual controller brings can be solved.
Description
Technical field
The present invention relates to automatic control technology field, particularly relate to and realize control method and device in dual controller scene.
Background technology
At SCR(SCR) in system, have two kinds of control models to be widely used, one controls whole SCR system by control unit of engine, and simultaneously another kind of pattern controls whole SCR system by transmitter control module and aftertreatment ECU (Electrical Control Unit).
When adopting the whole SCR system of the Schema control of control unit of engine+aftertreatment ECU (Electrical Control Unit), example is detected as with the dew point controlling NOx sensor, assembly in NOx sensor mainly ceramic component, owing to being in the condition of high temperature when NOx sensor works, if having dewdrop can produce damaging influence to NOx sensor around.In order to reduce this risk, need to heat the ceramic component in NOx sensor in advance before NOx work, to dry the dewdrop on ceramic component by the mode of heating.Wherein, controller (namely, control unit of engine and aftertreatment ECU (Electrical Control Unit)) first to some systematic parameters (as, the water temperature of engine, the delivery temperature of engine, the working time of transmitter and the rotating speed etc. of engine) detect in real time, when detecting that these systematic parameters meet default wait condition, controller sends to NOx sensor and controls message, indicating bit (this indicating bit is used to indicate NOx sensor and is in waiting status) is carried in this control message, waiting status before NOx sensor is in work under the instruction of indicating bit, at the waiting time of NOx sensor, system is carried out heating, drying by means of the delivery temperature of engine and is positioned at dewdrop on ceramic component, meanwhile, controller continues to detect in real time said system parameter, when detecting that these systematic parameters meet default condition of work, controller certainty annuity dries dewdrop, controller sends to NOx sensor and controls message, indicating bit instruction NOx sensor now in this control message is in running order, NOx sensor starts normal work under the instruction of indicating bit.
Realizing in process of the present invention, the present inventor finds that in prior art, at least there are the following problems:
Under the control model of control unit of engine+aftertreatment ECU (Electrical Control Unit), because control unit of engine and aftertreatment ECU (Electrical Control Unit) come from different production firms, therefore, in control unit of engine and aftertreatment ECU (Electrical Control Unit), for dew point detect set by systematic parameter and pre-conditioned all variant set by systematic parameter, in this case, there will be the control message that control unit of engine and aftertreatment ECU (Electrical Control Unit) send to NOx sensor inconsistent.As, control unit of engine is to messages to be controlled such as NOx sensor transmissions, and aftertreatment ECU (Electrical Control Unit) sends job control message to NOx sensor, under normal circumstances, when NOx sensor such as to obtain at message to be controlled and the job control message simultaneously, according to the logic of himself, NOx sensor can be in waiting status, that is, NOx sensor is now controlled by control unit of engine.But, for NOx sensor, it may be controlled by control unit of engine in some moment, and will be controlled by aftertreatment ECU (Electrical Control Unit) in the next moment, controlled by control unit of engine during this NOx sensor, time and the phenomenon that controlled by aftertreatment ECU (Electrical Control Unit) can cause the control disorder of SCR system.
Summary of the invention
In order to solve the problems of the technologies described above, embodiments provide the method and apparatus realizing controlling in dual controller scene, to solve the control disorder problem that dual controller brings.
The embodiment of the invention discloses following technical scheme:
In dual controller scene, realize the method controlled, comprising:
Obtain the controller indicating bit to controlling in message to be packaged;
Described indicating bit and the control bit set for controller are carried out logical OR computing, obtains operation result;
When encapsulating described control message, using described operation result as the indicating bit to controlling in message to be packaged;
Wherein, the control bit being two controller settings is different, when the control bit for the first controller setting is 0, and for second controller setting control bit be 1 time, system is controlled separately by the first controller, when for first controller setting control bit be 1, and for second controller set control bit be 0 time, system is controlled separately by second controller.
Preferably, when the dew point controlling SCR SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
Preferably, by or door carry out logical OR computing, or carry out logical OR computing by set-reset flip-floop.
In dual controller scene, realize the method controlled, comprising:
For the indicating bit controlled in message sets a control bit;
Control described indicating bit by described control bit close or open;
Wherein, open when the described control bit in the first controller controls described indicating bit, and the described control bit in second controller control described indicating bit close time, system is controlled separately by the first controller, close when the described control bit in second controller controls described indicating bit, and the described control bit in the first controller controls described indicating bit when opening, system is controlled separately by second controller.
Preferably, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
In dual controller scene, realize the device controlled, comprising:
Acquiring unit, for obtaining the controller indicating bit to controlling in message to be packaged;
Arithmetic logic unit, for described indicating bit and the control bit set for controller are carried out logical OR computing, obtains operation result;
Message encapsulation unit, for when encapsulating control message, using described operation result as the indicating bit to controlling in message to be packaged;
Wherein, when the control bit for the first controller setting is 0, and for second controller setting control bit be 1 time, system is controlled separately by the first controller, when the control bit for the first controller setting is 1, and for second controller setting control bit be 0 time, system is controlled separately by second controller.
Preferably, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
Preferably, by or door carry out logical OR computing, or carry out logical OR computing by set-reset flip-floop.
In dual controller scene, realize the device controlled, comprising:
Control bit setup unit, for setting a control bit for the indicating bit controlled in message;
Indicating bit control module, is closed for being controlled described indicating bit by described control bit or opens;
Wherein, open when the described control bit in the first controller controls described indicating bit, and the described control bit in second controller control described indicating bit close time, system is controlled separately by the first controller, close when the described control bit in second controller controls described indicating bit, and the described control bit in the first controller controls described indicating bit when opening, system is controlled separately by second controller.
Preferably, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
As can be seen from the above-described embodiment, compared with prior art, the advantage of technical solution of the present invention is:
By the indicating bit of controller and a control bit are carried out logical OR computing, or, by controlling the opening and closing of indicating bit, the independent control of controller can be realized, thus avoid two controllers and control brought control disorder problem simultaneously.
In addition, technical solution of the present invention is simple to operation, reliable and stable, and workload is little.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of process flow diagram realizing an embodiment of the method controlled in dual controller scene of the present invention;
Fig. 2 is the structural representation of EEC3 message;
Fig. 3 is the schematic diagram that in the present invention, control bit and indicating bit carry out logical operation;
Fig. 4 is a kind of process flow diagram realizing another embodiment of the method controlled in dual controller scene of the present invention;
Fig. 5 is a kind of structural drawing realizing an embodiment of the device controlled in dual controller scene of the present invention;
Fig. 6 is a kind of structural drawing realizing another embodiment of the device controlled in dual controller scene of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment one
Refer to Fig. 1, it is a kind of process flow diagram realizing an embodiment of the method controlled in dual controller scene of the present invention, and the method comprises the following steps:
Step 101: obtain the controller indicating bit to controlling in message to be packaged;
As a kind of application scenarios, when the dew point controlling SCR system detects, controlling message is EEC3(ElectronicEngineControl#3sendmessageaccordingtoSAE-J1939-71, the information sent is controlled according to the electric-control motor #3 of SAE-J1939-71 consensus standard) message, indicating bit is the release status indicating bit in EEC3 message.
Such as, when the dew point controlling NOx sensor detects, controller can detect in real time to some systematic parameters, wherein, systematic parameter includes but not limited to: the water temperature of engine, the delivery temperature of engine, the working time of engine, the rotating speed of engine and the preheating energy of NOx sensor, and the systematic parameter detected and the condition preset (condition of work comprising default wait condition and preset) are compared, when meeting the wait condition or satisfied default condition of work preset, controller assigns by sending EEC3 message to NOx sensor the steering order waited for or work.
EEC3 message structure as shown in Figure 2, last bit is indicating bit, and this indicating bit is used to indicate NOx sensor and waits for or start working.Such as, when this indicating bit is 0, instruction NOx sensor is waited for, and while wait, system is dried the dewdrop on the ceramic component of NOx sensor by means of the delivery temperature of engine.When this indicating bit is 1, instruction NOx sensor starts working (dewdrop on the ceramic component of NOx sensor has been dried complete).
Step 102: described indicating bit and the control bit set for controller are carried out logical OR computing, obtains operation result;
Such as, by or door or by SR(Set-Reset, arrange-reset and put) trigger carries out or computing the indicating bit of controller and control bit.
Step 103: when encapsulating described control message, using described operation result as the indicating bit to controlling in message to be packaged.
The control bit being the setting of two controllers is different, and when the control bit for the first controller setting is 0, and when the control bit set for second controller is 1, system is controlled separately by the first controller.When for first controller setting control bit be 1, and for second controller set control bit be 0 time, system is controlled separately by second controller.
Wherein, as shown in Figure 3, when the control bit for the first controller setting is 0, and for second controller setting control bit be 1 time, the control bit (being 0) of the indicating bit of the first controller and the first controller to be carried out or the result of computing is the indicating bit of the first controller, the control bit (being 1) of the indicating bit of second controller and second controller to be carried out or the result of computing is the control bit of second controller.Obviously, in the first controller, when encapsulating control message, be as the indicating bit controlled in message using the indicating bit of the first controller.And in second controller, when encapsulating control message, be as the indicating bit controlled in message using the control bit of second controller (being 1).Therefore, under the impact of control bit, second controller sends job control message to NOx sensor all the time, and the control message that the first controller sends to NOx sensor is determined by the indicating bit of the first controller, when indicating bit is 0, what send the message to be controlled such as is, when indicating bit is 1, transmission be job control message.
If the message to be controlled such as second controller sends job control message, the first controller transmission simultaneously, the control message that two controllers send is inconsistent, and according to the inherent logic of NOx sensor, NOx sensor is controlled by the first controller.If second controller sends job control message, first controller sends job control message simultaneously, and the control message of two controller transmissions is consistent, and NOx sensor is started working according to the instruction of job control message, that is, NOx sensor is still controlled by the first controller.Therefore, by control bit, system is controlled all the time by the first controller.Otherwise, system also can be made to be controlled by second controller all the time.And then controlled by the first controller when also just avoiding system, time and the control disorder problem that controlled by second controller.
It should be noted that, when the first controller is control unit of engine, second controller is aftertreatment ECU (Electrical Control Unit), otherwise when the first controller is aftertreatment ECU (Electrical Control Unit), second controller is control unit of engine.
As can be seen from the above-described embodiment, compared with prior art, the advantage of technical solution of the present invention is:
By the indicating bit of controller and a control bit are carried out logical OR computing, the independent control of controller can be realized, thus avoid two controllers and control brought control disorder problem simultaneously.
In addition, technical solution of the present invention does not need to know and change the steering logic in controller yet, simple to operation, reliable and stable, and workload is little.
Embodiment two
Refer to Fig. 4, it is a kind of process flow diagram realizing another embodiment of the method controlled in dual controller scene of the present invention, and the method comprises the following steps:
Step 401: for the indicating bit controlled in message sets a control bit;
Step 402: control described indicating bit by described control bit and close or open.
Wherein, open when the described control bit in the first controller controls described indicating bit, and the described control bit in second controller control described indicating bit close time, system is controlled separately by the first controller, close when the described control bit in second controller controls described indicating bit, and the described control bit in the first controller controls described indicating bit when opening, system is controlled separately by second controller.
Such as, when control bit is 0, this control bit controls indicating bit and closes, and when control bit is 1, this control bit controls to be designated as to open.If indicating bit is closed, no matter indicating bit is 0 or is 1, and controller all cannot be implemented to control by the indicating bit controlled in message.If indicating bit is opened, controller can be implemented to control by the indicating bit controlled in message, as, in the dew point of SCR system detects, indicating bit is 0, and what controller sent to NOx sensor the message to be controlled such as is, indicating bit is 1, and what controller sent to NOx sensor is job control message.
As a kind of application scenarios, when the dew point controlling SCR system detects, controlling message is EEC3 message, and indicating bit is the release status indicating bit in EEC3 message.
It should be noted that, when the first controller is control unit of engine, second controller is aftertreatment ECU (Electrical Control Unit), otherwise when the first controller is aftertreatment ECU (Electrical Control Unit), second controller is control unit of engine.
As can be seen from the above-described embodiment, compared with prior art, the advantage of technical solution of the present invention is:
By controlling the opening and closing of indicating bit, the independent control of controller can be realized, thus avoid two controllers and control brought control disorder problem simultaneously.
In addition, technical solution of the present invention is simple to operation.
Embodiment three
Corresponding with a kind of above-mentioned method realizing controlling in dual controller scene, the embodiment of the present invention additionally provides a kind of device realizing controlling in dual controller scene.Refer to Fig. 5, it is a kind of structural drawing realizing an embodiment of the device controlled in dual controller scene of the present invention, and this device comprises: acquiring unit 501, arithmetic logic unit 502 and message encapsulation unit 503.Principle of work below in conjunction with this device introduces its inner structure and annexation further.
Acquiring unit 501, for obtaining the controller indicating bit to controlling in message to be packaged;
Arithmetic logic unit 502, for described indicating bit and the control bit set for controller are carried out logical OR computing, obtains operation result;
Message encapsulation unit 503, for when encapsulating control message, using described operation result as the indicating bit to controlling in message to be packaged;
Wherein, when the control bit for the first controller setting is 0, and for second controller setting control bit be 1 time, system is controlled separately by the first controller, when the control bit for the first controller setting is 1, and for second controller setting control bit be 0 time, system is controlled separately by second controller.
Preferably, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
Preferably, by or door or carry out logical OR computing by set-reset flip-floop.
It should be noted that, when the first controller is control unit of engine, second controller is aftertreatment ECU (Electrical Control Unit), otherwise when the first controller is aftertreatment ECU (Electrical Control Unit), second controller is control unit of engine.
As can be seen from the above-described embodiment, compared with prior art, the advantage of technical solution of the present invention is:
By the indicating bit of controller and a control bit are carried out logical OR computing, the independent control of controller can be realized, thus avoid two controllers and control brought control disorder problem simultaneously.
In addition, technical solution of the present invention does not need to know and change the steering logic in controller yet, simple to operation, reliable and stable, and workload is little.
Embodiment four
Corresponding with a kind of above-mentioned method realizing controlling in dual controller scene, the embodiment of the present invention additionally provides the another kind of device realizing controlling in dual controller scene.Refer to Fig. 6, it is a kind of structural drawing realizing another embodiment of the device controlled in dual controller scene of the present invention, and this device comprises: control bit setup unit 601 and indicating bit control module 602.Principle of work below in conjunction with this device introduces its inner structure and annexation further.
Control bit setup unit 601, for setting a control bit for the indicating bit controlled in message;
Indicating bit control module 602, is closed for being controlled described indicating bit by described control bit or opens;
Wherein, open when the described control bit in the first controller controls described indicating bit, and the described control bit in second controller control described indicating bit close time, system is controlled separately by the first controller, close when the described control bit in second controller controls described indicating bit, and the described control bit in the first controller controls described indicating bit when opening, system is controlled separately by second controller.
Preferably, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
It should be noted that, when the first controller is control unit of engine, second controller is aftertreatment ECU (Electrical Control Unit), otherwise when the first controller is aftertreatment ECU (Electrical Control Unit), second controller is control unit of engine.
As can be seen from the above-described embodiment, compared with prior art, the advantage of technical solution of the present invention is:
By controlling the opening and closing of indicating bit, the independent control of controller can be realized, thus avoid two controllers and control brought control disorder problem simultaneously.
In addition, technical solution of the present invention is simple to operation.
The technician in described field can be well understood to, and for convenience of description and succinctly, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiment provided by the present invention, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, described above to device embodiment be only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, and such as multiple unit or assembly can in conjunction with being maybe integrated into another system, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, the indirect coupling of device or unit or communication connection, can be electrically, machinery or other form.
The described unit illustrated as separating component can or also can be physically separate, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit can be adopted to realize.
It should be noted that, one of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above a kind of method and apparatus realizing controlling in dual controller scene provided by the present invention is described in detail, apply specific embodiment herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. in dual controller scene, realize the method controlled, it is characterized in that, comprising:
Obtain the controller indicating bit to controlling in message to be packaged; Described indicating bit is used to indicate NOx sensor and waits for or start working; Indicating bit is 0, and what controller sent to NOx sensor the message to be controlled such as is; Indicating bit is 1, and what controller sent to NOx sensor is job control message;
Described indicating bit and the control bit set for controller are carried out logical OR computing, obtains operation result;
When encapsulating described control message, using described operation result as the indicating bit to controlling in message to be packaged;
Wherein, the control bit being two controller settings is different, when the control bit for the first controller setting is 0, and for second controller setting control bit be 1 time, system is controlled separately by the first controller, when for first controller setting control bit be 1, and for second controller set control bit be 0 time, system is controlled separately by second controller.
2. method according to claim 1, is characterized in that, when the dew point controlling SCR SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
3. method according to claim 1, is characterized in that, by or door carry out logical OR computing, or carry out logical OR computing by set-reset flip-floop.
4. in dual controller scene, realize the method controlled, it is characterized in that, comprising:
For the indicating bit controlled in message sets a control bit; Described indicating bit is used to indicate NOx sensor and waits for or start working; Indicating bit is 0, and what controller sent to NOx sensor the message to be controlled such as is; Indicating bit is 1, and what controller sent to NOx sensor is job control message;
Control described indicating bit by described control bit close or open;
Wherein, open when the described control bit in the first controller controls described indicating bit, and the described control bit in second controller control described indicating bit close time, system is controlled separately by the first controller, close when the described control bit in second controller controls described indicating bit, and the described control bit in the first controller controls described indicating bit when opening, system is controlled separately by second controller.
5. method according to claim 1, is characterized in that, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
6. in dual controller scene, realize the device controlled, it is characterized in that, comprising:
Acquiring unit, for obtaining the controller indicating bit to controlling in message to be packaged; Described indicating bit is used to indicate NOx sensor and waits for or start working; Indicating bit is 0, and what controller sent to NOx sensor the message to be controlled such as is; Indicating bit is 1, and what controller sent to NOx sensor is job control message;
Arithmetic logic unit, for described indicating bit and the control bit set for controller are carried out logical OR computing, obtains operation result;
Message encapsulation unit, for when encapsulating control message, using described operation result as the indicating bit to controlling in message to be packaged;
Wherein, when the control bit for the first controller setting is 0, and for second controller setting control bit be 1 time, system is controlled separately by the first controller, when the control bit for the first controller setting is 1, and for second controller setting control bit be 0 time, system is controlled separately by second controller.
7. device according to claim 6, is characterized in that, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
8. device according to claim 6, is characterized in that, by or door carry out logical OR computing, or carry out logical OR computing by set-reset flip-floop.
9. in dual controller scene, realize the device controlled, it is characterized in that, comprising:
Control bit setup unit, for setting a control bit for the indicating bit controlled in message; Described indicating bit is used to indicate NOx sensor and waits for or start working; Indicating bit is 0, and what controller sent to NOx sensor the message to be controlled such as is; Indicating bit is 1, and what controller sent to NOx sensor is job control message;
Indicating bit control module, is closed for being controlled described indicating bit by described control bit or opens;
Wherein, open when the described control bit in the first controller controls described indicating bit, and the described control bit in second controller control described indicating bit close time, system is controlled separately by the first controller, close when the described control bit in second controller controls described indicating bit, and the described control bit in the first controller controls described indicating bit when opening, system is controlled separately by second controller.
10. device according to claim 9, is characterized in that, when the dew point controlling SCR system detects, described control message is EEC3 message, and described indicating bit is the release status indicating bit in EEC3 message.
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