CN104199755B - A kind of method and system that hardware module failure is diagnosed based on indicator lamp - Google Patents

A kind of method and system that hardware module failure is diagnosed based on indicator lamp Download PDF

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Publication number
CN104199755B
CN104199755B CN201410421023.XA CN201410421023A CN104199755B CN 104199755 B CN104199755 B CN 104199755B CN 201410421023 A CN201410421023 A CN 201410421023A CN 104199755 B CN104199755 B CN 104199755B
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hardware module
indicator lamp
failure
identification code
hardware
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CN104199755A (en
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甄文先
陈启安
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Abstract

A kind of method and system that hardware module failure is diagnosed based on indicator lamp, methods described is included:Step 1. adds fault detection mechanism, and test interface and identification code, each hardware module one test interface of correspondence and an identification code are added in each hardware module driver porch;Step 2. sets indicator lamp flash type corresponding with identification code, identification code one indicator lamp flash type of correspondence;Step 3. sets up a database, preserves the one-to-one relationship of hardware module, identification code and indicator lamp flash type;Step 4. startup separator testing mechanism, when detecting hardware module failure, the type flashed according to indicator lamp reads identification code, and read corresponding hardware module title according to identification code.The present invention is when breaking down, and quick detection hardware fault saves the time, improves overhaul efficiency, and analysis and early warning and automatic reparation are carried out to hardware module failure;Conveniently failure can automatically be repaired, save after-sales service cost.

Description

A kind of method and system that hardware module failure is diagnosed based on indicator lamp
Technical field
It is more particularly to a kind of hard based on indicator lamp diagnosis the present invention relates to mobile terminal hardware module fault diagnosis technology The method and system of part module failure.
Background technology
Electronic product is more and more on the market, and hardware fault also can often occur in various products.Such as mobile phone power-on not It can drive, it is impossible to which operation is we do not know it is what reason completely.Method for diagnosing faults of the prior art is as follows, patent Number following technical scheme is disclosed for 201410198123.0:A kind of excavator fault locator, including detection wire harness;Electrical part Drive module, for driving electrical part to be detected in air-conditioning system, EGAS control system and shutdown systems to carry out simulation work Make state demonstration;Instrument control panel, including electrical part working condition demonstration control button, electrical part working station indicator and Display module;Electrical part working condition demonstrates control button, is realized for control apparatus part drive module to electrical part to be detected The analog demenstration of working condition;Electrical part working station indicator, the working condition for showing electrical part to be detected;Show mould Block, for showing that electrical part to be detected is in simulation working condition in air-conditioning system, EGAS control system and shutdown systems Under related data information and/or related data information situation of change;And power line.
Then it is difficult that flat-footed obtain is which module goes out but if there is numerous circuit module or hardware module Problem is showed, it is necessary to which technical staff goes to exclude or one by one confirm one by one, Comparison between detecting methods trouble is less efficient.
The content of the invention
Hardware module failure is diagnosed based on indicator lamp it is an object of the invention to overcome the deficiencies of the prior art and provide one kind Method and system, can conveniently recognize hardware module abort situation, early warning is made in time, the time is saved, improved Efficiency.
In order to achieve the above object, the technical solution adopted by the present invention is:
A kind of method that hardware module failure is diagnosed based on indicator lamp, is comprised the following steps:
Step 1. adds fault detection mechanism, and test interface and identification are added in each hardware module driver porch Code, each hardware module one test interface of correspondence and an identification code;
Step 2. sets indicator lamp flash type corresponding with identification code, one indicator lamp flicker class of an identification code correspondence Type;
Step 3. sets up a database, preserves the one-to-one relationship of hardware module, identification code and indicator lamp flash type;
Step 4. startup separator testing mechanism, when detecting hardware module failure, the type flashed according to indicator lamp is read Identification code is taken, and corresponding hardware module title is read according to identification code.
It is preferred that the indicator lamp flash type described in step 2 includes indicator lamp flashing times and scintillation time, each identification Code sets an indicator lamp flash type.
It is preferred that methods described further comprises:
The hardware module title that step 5. will appear from failure is sent to terminal server, and hardware mould is set up in terminal server Block fault early warning system.
It is preferred that described hardware module fault early warning system method for building up includes:
A. the number of times and fault correction time of each hardware module failure are counted, is repaiied according to the number of times and failure of failure The multiple time draws curve map respectively;
B., the number of times of failure and the early warning threshold values of fault correction time are set, number of times or event when hardware module failure Hinder repair time more than pre-set threshold value, then send early warning.
It is preferred that methods described further comprises:
The factor that step 6. breaks down to hardware module is analyzed, and sets up hardware fault repair procedure, works as hardware When module breaks down, read hardware fault repair procedure and repaired automatically.
It is preferred that step 6 also includes when hardware fault is new hardware fault, then sending hardware fault to service provider Etc. fault restoration program to be feedback.
The invention also discloses a kind of system that hardware module failure is diagnosed based on indicator lamp, including:
Fault detection mechanism setup module, for adding fault detection mechanism, in each hardware module driver entrance Place's addition test interface and identification code, each hardware module one test interface of correspondence and an identification code;
Indicator lamp flash type setup module, for setting indicator lamp flash type corresponding with identification code, an identification Code one indicator lamp flash type of correspondence;
Mishap Database setup module, for setting up a database, preserves hardware module, identification code and indicator lamp flicker class The one-to-one relationship of type;
Breakdown judge module, for startup separator testing mechanism, when detecting hardware module failure, dodges according to indicator lamp Bright type, reads identification code, and read corresponding hardware module title according to identification code.
It is preferred that the system also includes:Fault early warning system setup module, the hardware module name for will appear from failure Claim to send to terminal server, hardware module fault early warning system is set up in terminal server.
It is preferred that described fault early warning system setup module includes:
Failure analysis module, number of times and fault correction time for counting the failure of each hardware module, according to event The number of times and fault correction time of barrier draw curve map respectively;
Early warning threshold values setup module, for setting the number of times of failure and the early warning threshold values of fault correction time, when hardware mould The number of times or fault correction time that block breaks down exceed pre-set threshold value, then send early warning.
It is preferred that the system also includes:Automatic repairing module, for being divided the factor that hardware module breaks down Analysis, and hardware fault repair procedure is set up, when hardware module breaks down, read hardware fault repair procedure and repaiied automatically It is multiple.
Compared with prior art, the beneficial effects of the invention are as follows:By each hardware module set correspondence identification code and Indicator lamp flash type, when a failure occurs, can conveniently read which hardware module goes wrong, quick detection is hard Part failure, saves the time, improves overhaul efficiency;By setting hardware module fault early warning system, the hard of failure will appear from Part module title is sent to terminal server, is easy to manufacturer to monitor the state of market of whole mobile terminal, is run into large area hard It can make and timely respond to during part module failure;The factor that hardware module breaks down is analyzed, and sets up hardware fault and is repaiied Multiple program, when hardware module breaks down, reads hardware fault repair procedure and is repaired automatically, can be conveniently to hard The failure of part module is repaired automatically, largely save after sale, maintenance cost.
Brief description of the drawings
Fig. 1 is the method flow diagram of embodiments of the invention 1;
Fig. 2 is the system block diagram of embodiments of the invention 1;
Fig. 3 is the method flow diagram of embodiments of the invention 2;
Fig. 4 is the system block diagram of embodiments of the invention 2.
Embodiment
Idea of the invention is that overcoming the deficiencies in the prior art to diagnose hardware module failure based on indicator lamp there is provided one kind Method and system, indicator lamp diagnosis mobile terminal hardware fault and back-end data processing, this method can effectively detect The physical fault of hardware module, can avoid every machine from being required for often numerous and diverse manual test diagnosis, greatly save people Power cost and raising efficiency, while easily facilitating after sale and repairing.Then mobile terminal sends hardware fault information by backstage Data processing is done to the record of data statistics after sale, analysis, early warning system, allows manufacturer to monitor hardware on whole market in real time Can trend, and according to hardware curve map judge the hardware fault whether can large area occur making early warning.With reference to reality Apply example to be described in detail referring to the drawings, so that technical characteristic and advantage to the present invention are interpretated more in-depth.
Embodiment 1
The method flow diagram of embodiment 1 is as shown in figure 1, a kind of method that hardware module failure is diagnosed based on indicator lamp, is answered For mobile terminal product, the electronic product such as mobile phone, palm PC, and indicator lamp is set in mobile terminal, including it is as follows Step:
Step S101. add fault detection mechanism, each hardware module driver porch addition test interface and Identification code, each hardware module one test interface of correspondence and an identification code;In order to preferably carry out fault diagnosis to hardware module, Fault detection mechanism is added in mobile terminal.For example, fault detection mechanism can be arranged to the form or software of application program Form, mobile terminal addition fault detection mechanism after, after startup separator testing mechanism can automatically to mobile terminal production The hardware module of product is detected in real time.In order to be able to coordinate with fault detection mechanism, in each hardware module driver entrance Place's addition test interface and identification code.One test interface of each hardware module correspondence, the interface is connected with fault detection mechanism, and Each hardware module is correspondingly arranged unique identifier, if be able to detect that identification code just can obtain be which module hardware Module goes wrong, so as to targetedly just repair.
Step S102. sets indicator lamp flash type corresponding with identification code, and identification code one indicator lamp of correspondence dodges Bright type;Described indicator lamp flash type includes indicator lamp flashing times and scintillation time, and each identification code sets one to indicate Lamp flash type.In mobile terminal fault diagnosis, start the fault detection mechanism when opening initialization, then monitor Each hardware module.The exclusive identification code of each hardware is recorded when module breaks down, is fed back at fault detection mechanism Reason.Each identification code has an indicator lamp flashing times or the long and short combination of scintillation time, is referred to as the class of indicator lamp flicker Type.For example when indicator lamp flashing times are identical, different scintillation times can be set to distinguish different identification codes, Huo Zheshe Put the modes such as different flashing times.
Each hardware module and identification code(Indicator lamp flash type)Corresponding relation is as follows:
Each hardware module:Module one, module two ... ... modules N;
The flash type of correspondence indicator lamp:Type one, type two ... ... types N.
As can be seen here, when fault detection mechanism obtains indicator lamp flash type, so that it may obtain identification code, entered by identification code One step diagnoses the failure of some hardware module.
Step S103. sets up a database, and the one-to-one corresponding for preserving hardware module, identification code and indicator lamp flash type is closed System;Hardware module-identification code in step S102-indicator lamp flash type corresponding relation is stored in database, sets up each Association one by one between part, in case calling.For example, the correspondence identification code one of module one, the correspondence indicator lamp flicker class of identification code one Type one;When detecting hardware module failure, fault detection mechanism reads indicator lamp flash type, and identification is transferred from database Code, so as to obtain hardware module title.Attendant is set conveniently to obtain hardware module abort situation.
Step S104. startup separator testing mechanisms, when detecting hardware module failure, the class flashed according to indicator lamp Type, reads identification code, and read corresponding hardware module title according to identification code.
Fault detection mechanism can be initialized with mobile terminal-opening(Or be arranged as required to, i.e., user oneself selects Fault detection mechanism whether is opened, when fault detection mechanism is opened), fault detection mechanism detects the hardware of mobile terminal in real time Whether module breaks down, when there is hardware module to break down, and reads the type of indicator lamp flicker.Assuming that hardware module one is sent out Raw failure, and the indicator lamp flash type of its corresponding identification code flashes 3 times to be continuous, and flicker 1 second every time.So work as failure When testing mechanism reads the information of " indicator lamp flash type flashes 3 times to be continuous, and flicker 1 second every time ", then it is determined as hard Part module one breaks down, and reads hardware module title.So as to provide hardware module fault message to attendant.
The system block diagram of embodiment 1 as shown in Fig. 2 a kind of system that hardware module failure is diagnosed based on indicator lamp, including:
Fault detection mechanism setup module, for adding fault detection mechanism, in each hardware module driver entrance Place's addition test interface and identification code, each hardware module one test interface of correspondence and an identification code;
Indicator lamp flash type setup module, for setting indicator lamp flash type corresponding with identification code, an identification Code one indicator lamp flash type of correspondence;
Mishap Database setup module, for setting up a database, preserves hardware module, identification code and indicator lamp flicker class The one-to-one relationship of type;
Breakdown judge module, for startup separator testing mechanism, when detecting hardware module failure, dodges according to indicator lamp Bright type, reads identification code, and read corresponding hardware module title according to identification code.
Embodiment 2
Embodiment 2 as different from Example 1, sets automatic early-warning system and automatic repair function, makes mobile terminal hard Part module can conveniently carry out self-regeneration when breaking down, can be to when high-frequency failure occurs in some module Manufacturer's feedback timely and effectively safeguarded and improved by information.
The method flow diagram of embodiment 2 is as shown in figure 3, a kind of method that hardware module failure is diagnosed based on indicator lamp, bag Include following steps:
Step S201. add fault detection mechanism, each hardware module driver porch addition test interface and Identification code, each hardware module one test interface of correspondence and an identification code;In order to preferably carry out fault diagnosis to hardware module, Fault detection mechanism is added in mobile terminal.For example, fault detection mechanism can be arranged to the form or software of application program Form, mobile terminal addition fault detection mechanism after, after startup separator testing mechanism can automatically to mobile terminal production The hardware module of product is detected in real time.In order to be able to coordinate with fault detection mechanism, in each hardware module driver entrance Place's addition test interface and identification code.One test interface of each hardware module correspondence, the interface is connected with fault detection mechanism, and Each hardware module is correspondingly arranged unique identifier, if be able to detect that identification code just can obtain be which module hardware Module goes wrong, so as to targetedly just repair.
Step S202. sets indicator lamp flash type corresponding with identification code, and identification code one indicator lamp of correspondence dodges Bright type;Described indicator lamp flash type includes indicator lamp flashing times and scintillation time, and each identification code sets one to indicate Lamp flash type.In mobile terminal fault diagnosis, start the fault detection mechanism when opening initialization, then monitor Each hardware module.The exclusive identification code of each hardware is recorded when module breaks down, is fed back at fault detection mechanism Reason.Each identification code has an indicator lamp flashing times or the long and short combination of scintillation time, is referred to as the class of indicator lamp flicker Type.For example when indicator lamp flashing times are identical, different scintillation times can be set to distinguish different identification codes, Huo Zheshe Put the modes such as different flashing times.
Each hardware module and identification code(Indicator lamp flash type)Corresponding relation is as follows:
Each hardware module:Module one, module two ... ... modules N;
The flash type of correspondence indicator lamp:Type one, type two ... ... types N.
As can be seen here, when fault detection mechanism obtains indicator lamp flash type, so that it may obtain identification code, entered by identification code One step diagnoses the failure of some hardware module.
Step S203. sets up a database, and the one-to-one corresponding for preserving hardware module, identification code and indicator lamp flash type is closed System;Hardware module-identification code in step S202-indicator lamp flash type corresponding relation is stored in database, sets up each Association one by one between part, in case calling.For example, the correspondence identification code one of module one, the correspondence indicator lamp flicker class of identification code one Type one;When detecting hardware module failure, fault detection mechanism reads indicator lamp flash type, and identification is transferred from database Code, so as to obtain hardware module title.Attendant is set conveniently to obtain hardware module abort situation.
Step S204. startup separator testing mechanisms, when detecting hardware module failure, the class flashed according to indicator lamp Type, reads identification code, and read corresponding hardware module title according to identification code.
Fault detection mechanism can be initialized with mobile terminal-opening(Or be arranged as required to, i.e., user oneself selects Fault detection mechanism whether is opened, when fault detection mechanism is opened), fault detection mechanism detects the hardware of mobile terminal in real time Whether module breaks down, when there is hardware module to break down, and reads the type of indicator lamp flicker.Assuming that hardware module one is sent out Raw failure, and the indicator lamp flash type of its corresponding identification code flashes 3 times to be continuous, and flicker 1 second every time.So work as failure When testing mechanism reads the information of " indicator lamp flash type flashes 3 times to be continuous, and flicker 1 second every time ", then it is determined as hard Part module one breaks down, and reads hardware module title.So as to provide hardware module fault message to attendant.
The hardware module title that step S205. will appear from failure is sent to terminal server, sets up hard in terminal server Part module failure early warning system.When getting hardware module title in step S204, at the same backstage connect simultaneously upper wifi or User connects upper data network and is sent to the record of data statistics after sale, analysis, early warning with modes such as mail, information in the case of allowing System.The system is recorded by backstage feedback data, classification analysis, and each class hardware event T/A barrier curve map Judge whether to need to give manufacturer's early warning, in order to which manufacturer monitors the state of market of whole mobile terminal, run into large area Failure can be made and timely respond to.Individually there is hardware fault simultaneously, maintenance, after sale just can be with by the specification contrast given in advance Easily detect which hardware module goes wrong.
As presently preferred embodiments of the present invention, hardware module fault early warning system method for building up of the present invention includes:
A. the number of times and fault correction time of each hardware module failure are counted, is repaiied according to the number of times and failure of failure The multiple time draws curve map respectively;Convenient in order to count, the present invention sets a staqtistical data base in addition, for counting hardware module The number of times and fault correction time of failure, by the database, convenient and swift can be carried out at analysis to hardware module failure Reason, checks, curve map is drawn respectively according to the number of times and fault correction time of failure, by drawing curve map more for convenience It is clear blunt;
B., the number of times of failure and the early warning threshold values of fault correction time are set, number of times or event when hardware module failure Hinder repair time more than pre-set threshold value, then send early warning.The number of times of failure and the early warning valve of fault correction time are set by Value, can remind manufacturer to carry out processing hardware module failure in time, for example, when hardware module failure is less than early warning threshold values, then recognizing For, the hardware module failure belongs to normal, if hardware module failure frequency it is more relatively frequently, and fault correction time compared with It is long, then early warning is sent to manufacturer, cause manufacturer to note, handled as early as possible, drawn to prevent large-scale hardware module failure The systemic breakdown risen or other situations.
The factor that step S206. breaks down to hardware module is analyzed, and sets up hardware fault repair procedure, when When hardware module breaks down, read hardware fault repair procedure and repaired automatically.In the present invention, pass through in step S205 Wifi or user are connected upper data network and are sent to after sale with modes such as mail, information in the case of allowing, hard receiving after sale After part fault message, hardware module fault restoration program is researched and developed, and feeds back to mobile terminal system in time, is entered for hardware fault Row is automatic to be repaired, and when the problem of only hardware module occurs big can not repair, just needs user to go at after-sales department Reason, otherwise general hardware module failure can then be downloaded into by the progress self-regeneration of hardware fault repair procedure automatically Row is repaired.
Step S206 also includes when hardware fault is new hardware fault, then sending hardware fault to service provider and waiting Feed back fault restoration program.As presently preferred embodiments of the present invention, present invention additionally comprises hardware module fault detect judgement, example Such as, when hardware module failure is new hardware fault, and database after sale is without corresponding hardware fault repair procedure, then just need Want terminal server to feed back to service provider in time, wait service provider to carry out the research and development of fault restoration program, repaiied so as to feed back failure Multiple program.So deal with more flexibly, can conveniently detect hardware fault, at the same it is a large amount of save after sale, repair into This, and manufacturer can monitor the performance trend of whole mobile terminal in the market mobile terminal hardware in real time, so that preferably Hardware module performance is improved.
The system block diagram of embodiment 2 as shown in figure 4, a kind of system that hardware module failure is diagnosed based on indicator lamp, including:
Fault detection mechanism setup module, for adding fault detection mechanism, in each hardware module driver entrance Place's addition test interface and identification code, each hardware module one test interface of correspondence and an identification code;
Indicator lamp flash type setup module, for setting indicator lamp flash type corresponding with identification code, an identification Code one indicator lamp flash type of correspondence;
Mishap Database setup module, for setting up a database, preserves hardware module, identification code and indicator lamp flicker class The one-to-one relationship of type;
Breakdown judge module, for startup separator testing mechanism, when detecting hardware module failure, dodges according to indicator lamp Bright type, reads identification code, and read corresponding hardware module title according to identification code.
It is preferred that the system also includes:Fault early warning system setup module, the hardware module name for will appear from failure Claim to send to terminal server, hardware module fault early warning system is set up in terminal server.
It is preferred that described fault early warning system setup module includes:
Failure analysis module, number of times and fault correction time for counting the failure of each hardware module, according to event The number of times and fault correction time of barrier draw curve map respectively;
Early warning threshold values setup module, for setting the number of times of failure and the early warning threshold values of fault correction time, when hardware mould The number of times or fault correction time that block breaks down exceed pre-set threshold value, then send early warning.
It is preferred that the system also includes:Automatic repairing module, for being divided the factor that hardware module breaks down Analysis, and hardware fault repair procedure is set up, when hardware module breaks down, read hardware fault repair procedure and repaiied automatically It is multiple.
Clear, complete description is carried out to the present invention by the technical scheme in above example, it is clear that described reality Apply embodiment of the example for a present invention part, rather than whole embodiments.Based on the embodiment in the present invention, this area is common The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected Enclose.

Claims (10)

1. a kind of method that hardware module failure is diagnosed based on indicator lamp, is comprised the following steps:
Step 1. adds fault detection mechanism, and test interface and identification code are added in each hardware module driver porch, Each hardware module one test interface of correspondence and an identification code;
Step 2. sets indicator lamp flash type corresponding with identification code, identification code one indicator lamp flash type of correspondence;
Step 3. sets up a database, preserves the one-to-one relationship of hardware module, identification code and indicator lamp flash type;
Step 4. starts the fault detection mechanism in opening initialization to monitor the hardware module, when detecting hardware mould During block failure, the type flashed according to indicator lamp reads identification code, and read corresponding hardware module title according to identification code.
2. the method according to claim 1 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that:Step 2 institute The indicator lamp flash type stated includes indicator lamp flashing times and scintillation time, and each identification code sets an indicator lamp to flash class Type.
3. the method according to claim 2 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that methods described Further comprise:
The hardware module title that step 5. will appear from failure is sent to terminal server, and hardware module event is set up in terminal server Hinder early warning system.
4. the method according to claim 3 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that described is hard Part module failure early warning system method for building up includes:
A. the number of times and fault correction time of each hardware module failure are counted, during according to the number of times of failure and fault restoration Between draw curve map respectively;
B., the number of times of failure and the early warning threshold values of fault correction time are set, when the number of times or failure that hardware module breaks down are repaiied The multiple time exceedes pre-set threshold value, then sends early warning.
5. the method according to claim 4 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that methods described Further comprise:
The factor that step 6. breaks down to hardware module is analyzed, and sets up hardware fault repair procedure, works as hardware module During failure, read hardware fault repair procedure and repaired automatically.
6. the method according to claim 5 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that step 6 is also Including when hardware fault is new hardware fault, then hardware fault being sent to the fault restoration program to be feedback such as service provider.
7. a kind of system that hardware module failure is diagnosed based on indicator lamp, including:
Fault detection mechanism setup module, for adding fault detection mechanism, adds in each hardware module driver porch Plus test interface and identification code, each hardware module one test interface of correspondence and an identification code;
Indicator lamp flash type setup module, for setting indicator lamp flash type corresponding with identification code, an identification code pair Answer an indicator lamp flash type;
Mishap Database setup module, for setting up a database, preserves hardware module, identification code and indicator lamp flash type One-to-one relationship:
Breakdown judge module, for starting the fault detection mechanism in opening initialization to monitor the hardware module, when When detecting hardware module failure, the type flashed according to indicator lamp reads identification code, and corresponding hard according to identification code reading Part module title.
8. the system according to claim 7 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that the system Also include:
Fault early warning system setup module, the hardware module title for will appear from failure is sent to terminal server, in terminal Server sets up hardware module fault early warning system.
9. the system according to claim 8 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that described event Barrier early warning system setup module includes:
Failure analysis module, number of times and fault correction time for counting the failure of each hardware module, according to failure Number of times and fault correction time draw curve map respectively;
Early warning threshold values setup module, for setting the number of times of failure and the early warning threshold values of fault correction time, when hardware module goes out The number of times or fault correction time of existing failure exceed pre-set threshold value, then send early warning.
10. the system according to claim 9 that hardware module failure is diagnosed based on indicator lamp, it is characterised in that the system System also includes:
Automatic repairing module, for analyzing the factor that hardware module breaks down, and sets up hardware fault repair procedure, When hardware module breaks down, read hardware fault repair procedure and repaired automatically.
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