CN105653379A - Fault prediction method and apparatus, and fire fighting truck - Google Patents
Fault prediction method and apparatus, and fire fighting truck Download PDFInfo
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- CN105653379A CN105653379A CN201511003421.0A CN201511003421A CN105653379A CN 105653379 A CN105653379 A CN 105653379A CN 201511003421 A CN201511003421 A CN 201511003421A CN 105653379 A CN105653379 A CN 105653379A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/004—Error avoidance
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/008—Reliability or availability analysis
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Abstract
The present invention discloses a fault prediction method and apparatus, and a fire fighting truck. The method comprises: analyzing all acquired data on a bus, so as to obtain each communication quality indicator used for reflecting communication quality of the bus; and determining whether each communication quality indicator is within a corresponding indicator value range, and if it is determined that at least one communication quality indicator is not within the corresponding indicator value range, determining that the bus has a fault risk, so as to predict occurrence of a bus fault, perform corresponding security processing on a bus system before the fault occurs, and avoid a risk brought by breakdown of the bus system when the fault suddenly occurs to an electrical system, thereby improving security and reliability of the electrical system.
Description
Technical field
The present invention relates to electrical system field, particularly relate to a kind of failure prediction method, device and fire fighting truck.
Background technology
For the electrical system of the electrical equipments such as fire fighting truck, carry out the transmission of signal data frequently with bus communication mode. That is, in electrical system, the transmission of data mainly can be realized by bus system, thus, the whether reliable performance on electrical system of bus system has very important impact.
Specifically, operation that can be reliable, safe in order to ensure bus system, the real-time status (such as whether online, whether normal etc.) of other each child nodes can be detected, to monitor the ruuning situation of whole bus system by the host node in bus system. If it is determined that a certain child node exists fault, and when the fault of this child node has reached the failure criterion set, then stop the data transmit-receive of this child node; It addition, if it is determined that the network failure of bus system comparatively serious (fault such as host node has reached the failure criterion of setting, programming is broken down), the data transmit-receive of whole bus system also can be stopped.
It is to say, know ability after only possessing currently for the fault of bus system, as after bus system breaks down, just bus system carried out safe handling, as stopped malfunctioning node or stopping whole bus system. Although this mode when fault occurs, can play the protected effect to electrical system, but the occasion that security requirement is higher; bus is out of service suddenly; whole electrical system can be made to paralyse, it is possible to more serious consequence can be caused, reduce safety and the reliability of system.
In sum, at present, the method that there is no predicts, before bus system fault occurs, the probability that its fault occurs, thus the problem causing existing owing to bus system caused electrical system paralysis out of service suddenly etc. reduces electrical system safety and reliability etc.
Summary of the invention
Embodiments provide a kind of failure prediction method, device and fire fighting truck, in order to the problem reducing electrical system safety and reliability etc. due to bus system caused electrical system paralysis out of service suddenly etc. solving to exist in prior art.
Embodiments provide a kind of failure prediction method, including:
All data on data acquisition bus, and according to the data collected, obtain each communication quality index of communication quality for reflecting bus;
For each communication quality index, according to the index span corresponding with this communication quality index set, it is judged that whether this communication quality index is in the index span of correspondence;
If it is determined that at least one communication quality index is not in the index span of correspondence, it is determined that bus exists failure risk.
The embodiment of the present invention additionally provides a kind of fault prediction device, including:
Data acquisition module, all data on data acquisition bus, and according to the data collected, obtain each communication quality index of communication quality for reflecting bus;
Index judge module, for for each communication quality index, according to the index span corresponding with this communication quality index set, it is judged that whether this communication quality index is in the index span of correspondence;
Failure predication module, for if it is determined that at least one communication quality index is not in the index span of correspondence, it is determined that bus exists failure risk.
The embodiment of the present invention additionally provides a kind of fire fighting truck, and described fire fighting truck includes the fault prediction device described in the embodiment of the present invention.
The present invention has the beneficial effect that:
Embodiments provide a kind of failure prediction method, device and fire fighting truck, can pass through collecting, all data in bus are analyzed, obtain each communication quality index of communication quality for reflecting bus, and judge in the index the span whether each communication quality index in each communication quality index is in correspondence, if it is determined that at least one communication quality index is not in the index span of correspondence, then can determine that bus exists failure risk, thus, the generation of bus failure can be predicted, so that before the failure occurs, bus system is done corresponding safe handling, when avoiding fault to occur suddenly, bus system is paralysed the risk brought to electrical system, improve safety and the reliability of electrical system.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly introduced, 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 premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 show the schematic flow sheet of the failure prediction method described in the embodiment of the present invention one;
Fig. 2 show the implementation schematic diagram of the failure prediction method described in the embodiment of the present invention one;
Fig. 3 show the structural representation of the fault prediction device described in the embodiment of the present invention two.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment one:
In order to solve the problem owing to bus system caused electrical system paralysis out of service suddenly etc. reduces electrical system safety and reliability etc., the embodiment of the present invention one provides a kind of failure prediction method, as shown in Figure 1, it is the schematic flow sheet of the failure prediction method described in the embodiment of the present invention one, specifically, as it is shown in figure 1, described method can comprise the following steps that
Step 101: all data on data acquisition bus, and according to the data collected, obtains each communication quality index of communication quality for reflecting bus;
Step 102: for each communication quality index, according to the index span corresponding with this communication quality index set, it is judged that whether this communication quality index is in the index span of correspondence;
Step 103: if it is determined that at least one communication quality index is not in the index span of correspondence, it is determined that bus exists failure risk.
That is, can pass through collecting, all data in bus are analyzed, obtain each communication quality index of communication quality for reflecting bus, and judge in the index span whether each communication quality index is in correspondence, if it is determined that at least one communication quality index is not in the index span of correspondence, then can determine that bus exists failure risk, it is thus possible to the generation of prediction bus failure, so that before the failure occurs, bus system is done corresponding safe handling, when avoiding fault to occur suddenly, bus system is paralysed the risk brought to electrical system, improve safety and the reliability of electrical system.
Specifically, described communication quality index can include period erroneous frame density E (t), bus maximum response time D (t) and bus load fluctuation ratio L (t), wherein:
Described E (t) refers to the quantity setting the erroneous frame produced on time period internal bus; Wherein, the described setting time period can be arranged flexibly according to practical situation, as may be configured as 10s, 1min etc.;
Described D (t) refers to that the same node in bus receives from the maximum time interval between adjacent two packet of same data source, such as, assume that bus has 3 node A, B, C, and the maximum time interval that node A receives between adjacent two packet (i.e. two packets of continuous print) from same data source is 1s, Node-B receiver is 3s to the maximum time interval between adjacent two packet from same data source, node C receive from the maximum time interval between adjacent two packet of same data source be 5s, then, node C can be received from the maximum time interval between adjacent two packet of same data source as described D (t),
Described L (t) refers to the ratio of bus real time load and nominal load, and wherein, bus real time load refers to the present load of bus, it addition, the preferred value of L (t) can be 1, does not all repeat herein.
Certainly, it should be noted that, for each communication quality index, it specifically can include at least one and the node index of communication quality one to one in bus, and the sub-index of each communication quality is for reflecting the communication quality of the node corresponding with this sub-index in bus. Such as, assume that bus has 3 nodes A, B, C, then bus maximum response time D (t) may particularly include three sub-index D1 (t), D2 (t), D3 (t), wherein, D1 (t) can represent that the node A in bus receives from the maximum time interval between adjacent two packet of same data source; D2 (t) can represent that Node-B receiver in bus is to the maximum time interval between adjacent two packet from same data source; D3 (t) can represent that the node C in bus receives from the maximum time interval between adjacent two packet of same data source.
In addition, it is necessary to illustrate, communication quality index, except including any of the above index, may also include other indexs, this do not repeated.
Further, for arbitrary communication quality index, the index span corresponding with this arbitrary communication quality index obtains in the following manner:
In the design advanced development of bus, by the simulation to various faults, it is determined that when bus breaks down, the marginal value of this arbitrary communication quality index;
Marginal value according to this arbitrary communication quality index, it is determined that the index span corresponding with this arbitrary communication quality index.
Specifically, can in the design advanced development of bus, for the arbitrary communication quality index in each communication quality index, carry out the simulation of various most common failure, such as electric jamming, magnetic interference, loose contact, product water inlet etc., and can pass through to regulate the size degree of all kinds of interference, monitor the operation conditions of whole bus system in real time, draw out bus system working curve under interference in various degree, and then draw bus system from normal operating conditions sport malfunction time corresponding interference strength, and the value of this arbitrary communication quality index corresponding to this intensity, and this value is set as the marginal value of this arbitrary communication quality index, and the index span of this arbitrary communication quality index will be set as less than the span of this marginal value.
Such as, normal bus system is applied electric jamming, the running status of bus system changes along with being continually changing of electric field intensity, when electric field intensity reaches 20V/m, this bus system there occurs suddenly fault, now, communication quality index E (t) value in bus system is 40, the marginal value that this communication quality index is then described is 40, thus, the span of this communication quality index E (t) can be set to < 40, that is, when the value of this communication quality index E (t) is not less than 40 (such as >=40), bus system has the risk broken down.
Wherein it is desired to illustrate, the index span of each communication quality index, all obtained by substantial amounts of experiment, the number of times of experiment is more many, and the accuracy of index span is more high, and this is not repeated. It addition, the index span of each communication quality index can store in table form, as being stored in the failure boundary condition table of setting, in order to the follow-up mode by tabling look-up, it is determined that whether each communication quality index is in the index span of correspondence.
Need further exist for illustrating, the index span of each communication quality index, can be obtained by fault simulation in the design advanced development of product, it is possible in the application process of bus system, obtained by fault simulation, this is not limited in any way.
Further, determining that bus exists failure risk simultaneously or after, described method may also include that
Determine the failure risk degree of bus the failure risk degree according to bus, bus is carried out corresponding safe handling.
Such as, if it is determined that all of communication quality index is all not in the index span of correspondence, then can illustrate that the probability that bus system breaks down is significantly high, namely failure risk degree is significantly high, thus, the operation of this bus system can be stopped immediately, in order to immediately this bus system is carried out corresponding maintenance process; If it is determined that the section communication quality index in all communication quality indexs is not in the index span of correspondence, then illustrate that the probability that this bus system breaks down is not high especially, namely failure risk degree is relatively low, thus, alert process can be carried out, now, bus system still can be applicable to the scene etc. that security requirement is relatively low.
That is, as shown in Figure 2, in practical operation, in advance bus system can be carried out repeatedly fault simulation experiment (the design advanced development as in bus system), obtain the index span of each communication quality index, and by the span of each communication quality index, it is saved in failure boundary condition table;In the actual application of bus system, can pass through to gather all data received on (such as Real-time Collection) each node, analyze the actual value drawing each communication quality index, and the mode by tabling look-up, determine that each communication quality index is whether in corresponding index span, judge whether bus system can break down with this, if the value of at least one the communication quality index in each communication quality index is not in corresponding index span, then in advance bus system is carried out safe handling, as out of service, carry out warning etc., to realize the prediction to bus system fault, solve the problem owing to bus system caused electrical system paralysis out of service suddenly etc. reduces electrical system safety and reliability etc., improve safety and the reliability of bus system.
Further, described method may also include that
For arbitrary communication quality index, if it is determined that this arbitrary communication quality index is not in the index span of correspondence, or, determine that the difference between this arbitrary communication quality index and rated value of this arbitrary communication quality index is not less than setting value (this setting value can be arranged flexibly according to practical situation), then report to the police.
Wherein, the rated value of described arbitrary communication quality index can be the design advanced development in bus, and bus system is tested, the rated value of each communication quality index during the bus normal operation obtained, reference value of namely dispatching from the factory.
It addition, the warning described in the present embodiment can be signal alarm, audio alert, information alert etc., do not repeat herein.
Further, in the present embodiment, for each operation of reporting to the police, all it can be recorded, to obtain corresponding alarm log, in order to attendant is by checking that the mode of alarm log judges whether to need bus system is carried out maintenance etc.
Further, described method also includes:
If it is determined that all communication quality indexs are in the index span of correspondence, then determine and bus be absent from failure risk (or the probability of failure risk is very low, can ignore), now, can without bus be carried out safe handling, can be applied in various scene (scene etc. as higher in security requirements such as height rescues), repeat no more herein.
Further, it should be noted that, in the present embodiment, except can based on index span corresponding to each communication quality index, judge whether bus system exists outside the risk broken down, carry out statistical analysis also by the actual value of each communication quality index, estimate the probability that bus system breaks down, to determine whether bus system can break down, this is not repeated.
Embodiments provide a kind of failure prediction method, can pass through collecting, all data in bus are analyzed, obtain each communication quality index of communication quality for reflecting bus, and judge in the index span whether each communication quality index is in correspondence, if it is determined that at least one communication quality index is not in the index span of correspondence, then can determine that bus exists failure risk, it is thus possible to the generation of prediction bus failure, so that before the failure occurs, bus system is done corresponding safe handling, when avoiding fault to occur suddenly, bus system is paralysed the risk brought to electrical system, improve safety and the reliability of electrical system.
Embodiment two:
Based on the inventive concept identical with the embodiment of the present invention one, the embodiment of the present invention two provides a kind of fault prediction device, as shown in Figure 3, it is the structural representation of the fault prediction device described in the embodiment of the present invention two, specifically, as it is shown on figure 3, described fault prediction device comprises the steps that
Data acquisition module 31, all data on data acquisition bus, and according to the data collected, obtain each communication quality index of communication quality for reflecting bus;
Index judge module 32, for for each communication quality index, according to the index span corresponding with this communication quality index set, it is judged that whether this communication quality index is in the index span of correspondence;
Failure predication module 33, for if it is determined that at least one communication quality index is not in the index span of correspondence, it is determined that bus exists failure risk.
That is, can pass through collecting, all data in bus are analyzed, obtain each communication quality index of communication quality for reflecting bus, and judge in the index span whether each communication quality index is in correspondence, if it is determined that at least one communication quality index is not in the index span of correspondence, then can determine that bus exists failure risk, it is thus possible to the generation of prediction bus failure, so that before the failure occurs, bus system is done corresponding safe handling, when avoiding fault to occur suddenly, bus system is paralysed the risk brought to electrical system, improve safety and the reliability of electrical system.
Specifically, described communication quality index can include period erroneous frame density E (t), bus maximum response time D (t) and bus load fluctuation ratio L (t), wherein:
Described E (t) refers to the quantity setting the erroneous frame produced on time period internal bus; Wherein, the described setting time period can be arranged flexibly according to practical situation, as may be configured as 10s, 1min etc.;
Described D (t) refers to that the same node in bus receives from the maximum time interval between adjacent two packet of same data source, such as, assume that bus has 3 node A, B, C, and the maximum time interval that node A receives between adjacent two packet (i.e. two packets of continuous print) from same data source is 1s, Node-B receiver is 3s to the maximum time interval between adjacent two packet from same data source, node C receive from the maximum time interval between adjacent two packet of same data source be 5s, then, node C can be received from the maximum time interval between adjacent two packet of same data source as described D (t),
Described L (t) refers to the ratio of bus real time load and nominal load. Wherein, bus real time load refers to the present load of bus, it addition, the preferred value of L (t) can be 1, does not all repeat herein.
Certainly, it should be noted that, for each communication quality index, it specifically can include at least one and the node index of communication quality one to one in bus, and the sub-index of each communication quality is for reflecting the communication quality of the node corresponding with this sub-index in bus. Such as, assume that bus has 3 nodes A, B, C, then bus maximum response time D (t) may particularly include three sub-index D1 (t), D2 (t), D3 (t), wherein, D1 (t) can represent that the node A in bus receives from the maximum time interval between adjacent two packet of same data source; D2 (t) can represent that Node-B receiver in bus is to the maximum time interval between adjacent two packet from same data source; D3 (t) can represent that the node C in bus receives from the maximum time interval between adjacent two packet of same data source.
In addition, it is necessary to illustrate, communication quality index, except including any of the above index, may also include other indexs, this do not repeated.
Further, described device may also include that
Index span determines module 34, for for arbitrary communication quality index, in the design advanced development of bus, by the simulation to various faults, it is determined that when bus breaks down, and the marginal value of this arbitrary communication quality index;And the marginal value according to this arbitrary communication quality index, it is determined that the index span corresponding with this arbitrary communication quality index.
Specifically, can in the design advanced development of bus, for the arbitrary communication quality index in each communication quality index, carry out the simulation of various most common failure, such as electric jamming, magnetic interference, loose contact, product water inlet etc., and can pass through to regulate the size degree of all kinds of interference, monitor the operation conditions of whole bus system in real time, draw out bus system working curve under interference in various degree, and then draw bus system from normal operating conditions sport malfunction time corresponding interference strength, and the value of this arbitrary communication quality index corresponding to this intensity, and this value is set as the marginal value of this arbitrary communication quality index, and the index span of this arbitrary communication quality index will be set as less than the span of this marginal value.
Such as, normal bus system is applied electric jamming, the running status of bus system changes along with being continually changing of electric field intensity, when electric field intensity reaches 20V/m, this bus system there occurs suddenly fault, now, communication quality index E (t) value in bus system is 40, the marginal value that this communication quality index is then described is 40, thus, the span of this communication quality index E (t) can be set to < 40, that is, when the value of this communication quality index E (t) is not less than 40 (such as >=40), bus system has the risk broken down.
Wherein it is desired to illustrate, the index span of each communication quality index, all obtained by substantial amounts of experiment, the number of times of experiment is more many, and the accuracy of index span is more high, and this is not repeated. It addition, the index span of each communication quality index can store in table form, as being stored in the failure boundary condition table of setting, in order to the follow-up mode by tabling look-up, it is determined that whether each communication quality index is in the index span of correspondence.
Need further exist for illustrating, the index span of each communication quality index, can be obtained by fault simulation in the design advanced development of product, it is possible in the application process of bus system, obtained by fault simulation, this is not limited in any way.
Further, described device may also include that
Secure processing module 35, for determining that bus exists failure risk simultaneously or after, it is determined that the failure risk degree of bus, and the failure risk degree according to bus, carries out corresponding safe handling to bus.
Such as, if it is determined that all of communication quality index is all not in the index span of correspondence, then can illustrate that the probability that bus system breaks down is significantly high, namely failure risk degree is significantly high, thus, the operation of this bus system can be stopped immediately, in order to immediately this bus system is carried out corresponding maintenance process; If it is determined that the section communication quality index in all communication quality indexs is not in the index span of correspondence, then illustrate that the probability that this bus system breaks down is not high especially, namely failure risk degree is relatively low, thus, alert process can be carried out, now, bus system still can be applicable to the scene etc. that security requirement is relatively low.
Further, described device may also include that
Information alert module 36, for for arbitrary communication quality index, if it is determined that this arbitrary communication quality index is not in the index span of correspondence, or, determine that the difference between this arbitrary communication quality index and rated value of this arbitrary communication quality index is not less than setting value (this setting value can be arranged flexibly according to practical situation), then report to the police.
Wherein, the rated value of described arbitrary communication quality index can be the design advanced development in bus, and bus system is tested, the rated value of each communication quality index during the bus normal operation obtained, reference value of namely dispatching from the factory.
It addition, the warning described in the present embodiment can be signal alarm, audio alert, information alert etc., do not repeat herein.
Further, in the present embodiment, for each operation of reporting to the police, all it can be recorded, to obtain corresponding alarm log, in order to attendant is by checking that the mode of alarm log judges whether to need bus system is carried out maintenance etc.
Further, described failure predication module 33, can be additionally used in if it is determined that all communication quality indexs are in the index span of correspondence, then determine and bus be absent from failure risk (or the probability of failure risk is very low, can ignore), now, can without bus be carried out safe handling, can be applied in various scene (scene etc. as higher in security requirements such as height rescues), repeat no more herein.
Further, it should be noted that, in the present embodiment, except can based on index span corresponding to each communication quality index, judge whether bus system exists outside the risk broken down, carry out statistical analysis also by the actual value of each communication quality index, estimate the probability that bus system breaks down, to determine whether bus system can break down, this is not repeated.
The embodiment of the present invention two additionally provides a kind of fire fighting truck, and described fire fighting truck includes the fault prediction device described in the embodiment of the present invention two, repeats no more herein.
It will be understood by those skilled in the art that embodiments of the invention can be provided as method, device (equipment) or computer program. Therefore, the present invention can adopt the form of complete hardware embodiment, complete software implementation or the embodiment in conjunction with software and hardware aspect. And, the present invention can adopt the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is that flow chart and/or block diagram with reference to method according to embodiments of the present invention, device (equipment) and computer program describe. It should be understood that can by the combination of the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame. These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces to include the manufacture of command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides for realizing the step of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art are once know basic creative concept, then these embodiments can be made other change and amendment. So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art. So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. a failure prediction method, it is characterised in that including:
All data on data acquisition bus, and according to the data collected, obtain each communication quality index of communication quality for reflecting bus;
For each communication quality index, according to the index span corresponding with this communication quality index set, it is judged that whether this communication quality index is in the index span of correspondence;
If it is determined that at least one communication quality index is not in the index span of correspondence, it is determined that bus exists failure risk.
2. the method for claim 1, it is characterised in that described communication quality index includes period erroneous frame density, bus maximum response time and bus load fluctuation ratio, wherein:
Described period erroneous frame density refers to the quantity setting the erroneous frame produced on time period internal bus;
Described bus maximum response time refers to that the same node in bus receives from the maximum time interval between adjacent two packet of same data source;
Described bus load fluctuation ratio refers to the ratio of bus real time load and nominal load.
3. the method for claim 1, it is characterised in that for arbitrary communication quality index, the index span corresponding with this arbitrary communication quality index obtains in the following manner:
In the design advanced development of bus, by the simulation to various faults, it is determined that when bus breaks down, the marginal value of this arbitrary communication quality index;
Marginal value according to this arbitrary communication quality index, it is determined that the index span corresponding with this arbitrary communication quality index.
4. the method for claim 1, it is characterised in that determining that bus exists failure risk simultaneously or after, described method also includes:
Determine the failure risk degree of bus the failure risk degree according to bus, bus is carried out corresponding safe handling.
5. the method for claim 1, it is characterised in that described method also includes:
For arbitrary communication quality index, if it is determined that this arbitrary communication quality index is not in the index span of correspondence, or, it is determined that the difference between this arbitrary communication quality index and rated value of this arbitrary communication quality index is not less than setting value, then report to the police.
6. a fault prediction device, it is characterised in that including:
Data acquisition module, all data on data acquisition bus, and according to the data collected, obtain each communication quality index of communication quality for reflecting bus;
Index judge module, for for each communication quality index, according to the index span corresponding with this communication quality index set, it is judged that whether this communication quality index is in the index span of correspondence;
Failure predication module, for if it is determined that at least one communication quality index is not in the index span of correspondence, it is determined that bus exists failure risk.
7. device as claimed in claim 6, it is characterised in that described communication quality index includes period erroneous frame density, bus maximum response time and bus load fluctuation ratio, wherein:
Described period erroneous frame density refers to the quantity setting the erroneous frame produced on time period internal bus;
Described bus maximum response time refers to that the same node in bus receives from the maximum time interval between adjacent two packet of same data source;
Described bus load fluctuation ratio refers to the ratio of bus real time load and nominal load.
8. device as claimed in claim 6, it is characterised in that described device also includes:
Index span determines module, for for arbitrary communication quality index, in the design advanced development of bus, by the simulation to various faults, it is determined that when bus breaks down, and the marginal value of this arbitrary communication quality index; And the marginal value according to this arbitrary communication quality index, it is determined that the index span corresponding with this arbitrary communication quality index.
9. device as claimed in claim 6, it is characterised in that described device also includes:
Secure processing module, for determining that bus exists failure risk simultaneously or after, it is determined that the failure risk degree of bus, and the failure risk degree according to bus, carries out corresponding safe handling to bus.
10. device as claimed in claim 6, it is characterised in that described device also includes:
Information alert module, for for arbitrary communication quality index, however, it is determined that this arbitrary communication quality index is not in the index span of correspondence, or, the difference determined between this arbitrary communication quality index and rated value of this arbitrary communication quality index is not less than setting value, then report to the police.
11. a fire fighting truck, it is characterised in that described fire fighting truck includes the arbitrary described fault prediction device of claim 6��10.
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| CN201511003421.0A CN105653379A (en) | 2015-12-28 | 2015-12-28 | Fault prediction method and apparatus, and fire fighting truck |
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| CN201511003421.0A Pending CN105653379A (en) | 2015-12-28 | 2015-12-28 | Fault prediction method and apparatus, and fire fighting truck |
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