CN101246720B - Vehicle mounted computer hard disk and battery protection method - Google Patents
Vehicle mounted computer hard disk and battery protection method Download PDFInfo
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- CN101246720B CN101246720B CN2008100141860A CN200810014186A CN101246720B CN 101246720 B CN101246720 B CN 101246720B CN 2008100141860 A CN2008100141860 A CN 2008100141860A CN 200810014186 A CN200810014186 A CN 200810014186A CN 101246720 B CN101246720 B CN 101246720B
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- hard disk
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The invention is a protection method for vehicle-mounted computer hardware and battery, the vehicle-mounted device of the method comprises a power unit, a control unit, a function unit, a hard disc and a voltage testing device. The ACC or ON output voltage of an igniting switch is monitored by a make-break testing unit, as the basis of stopping hardware operation and shutdown or standby of the vehicle-mounted device. The protection method comprises the steps that: 1) the ACC or ON output voltage of the igniting switch is tested by the make-break testing unit; 2) a automobile operation state is judged according to the high state or low state of the ACC or ON output voltage of the igniting switch; 3) when the automobile igniting switch switches from ON or ACC position to OFF close position, the testing voltage of the make-break testing unit changes from high voltage to low voltage, then the hard disc operation is stopped immediately, the instruction hard disc magnetic head is repositioned, the vehicle-mounted device is in shutdown or standby state. By timely control, stopping of hard disc operation previous to power off is realized, preventing hard disc damage and data loss caused by power off and preventing battery exhaustion of vehicle-mounted device caused by long-term operation when the automobile is in stall state.
Description
Technical field
The present invention relates to a kind of protective device, particularly a kind of equipment that is used for containing hard disk on automobile is protected hard disk, and prevents that automobile batteries from exhausting the device of electric energy.
Technical background
Because the huge memory capacity of hard disk and memory contents is non-volatile, begin to be applied on the automobile, such as the information stores of equipment such as monitoring inside and outside storage, drive recorder and the car as the audio/video program of vehicle-mounted audio-visual system.Hard disk is the equipment of an electromechanical integration, its shock resistance a little less than, in order to solve in unstable environment such as the vehicle-mounted environmental applications of jolting, generally all be embedded in acceleration transducer at hard disk, can real-time perception when jolting, in time control head resets, and the hard disk that waits physical shock to cause that prevents to jolt damages.This has solved the application foundation of hard disk in mobile unit.
But these mobile units that contain hard disk in use, power-off operation often can appear not carrying out when stopping, the direct power cutoff of driver, cause directly outage in the equipment operation, can impact to hard disk like this, may cause on the one hand to guarantee on the hard disk that data in the buffer zone all write the problem of hard disk, hard disk may be carried out some operation on the other hand, sudden power can cause the impact to hard disk, causes the shortening of hard disk life-span.According to HD vendor's data, the improper hard disk of cutting out can shorten a half-life.Hard disk is the important module of mobile unit, and accounts for sizable cost, and hard disk corruptions can cause serious loss.The value of data is unable to estimate value especially in the hard disk in addition.
In order to prolong the life-span of hard disk, just must solve the automobile flameout outage to the hard disk problem that impacts.A kind of mode is directly to use powered battery containing the hard disk mobile unit, and equipment is in power supply state all the time like this, can not take place the outage of hard disk is impacted.But equipment is in power supply state always like this, forgets to close in the pass that contains the hard disk mobile unit to cause automobile storage battery to discharge for a long time, causes running down of battery, and security is not high yet in addition.
Summary of the invention
The purpose of this invention is to provide a kind of control method that before automobile power-down, can stop hard disk work, the impact that makes hard disk be unlikely to be cut off the power supply, and prevent that mobile unit long-play under the automobile flameout state from exhausting the electric energy of automobile batteries.
The present invention is directed to as full-sized cars such as passenger vehicles,, realize finally stopping to initiatively stopping the work of hard disk before the mobile unit power supply by the testing circuit signal according to the sequence of operation of parking of automobile.
There is a total lock switch in oversize vehicle between battery and various automobile electrical circuit, be used to cut off the power supply to whole vehicle.Automobile at first is to cut out ignition switch, and then cuts out total lock switch when stopping.The order of utilizing ignition switch to close prior to total lock switch is implemented in the preceding control hard disk of stopping power supply and quits work.
In the hard disk mobile unit, increase an ignition switch break-make detecting unit, its connecting line Live is connected to the ACC or the ON output of ignition switch, and whether be used for detecting automobile flame-out.
The positive pole that contains the power supply power supply of hard disk mobile unit inserts the positive pole of automobile batteries and electricity generation system, then inserts behind total lock switch for the automobile that total lock switch is arranged, and negative pole is connected with chassis, is connected as the negative pole of ground with battery and electricity generation system.
Contain the hard disk mobile unit in operational process, the break-make detecting unit by the voltage of igniting detection line Live monitors ignition switch ACC or ON, if voltage is high, shows the ignition switch connection at any time, automobile is in running status, then contains the hard disk mobile unit and continues normal operation.
If detect igniting detection line Live voltage, show that then ignition switch closes automobile flameout by high step-down.The break-make detecting unit sends automobile flameout message to the CPU or the MCU of control module.Control module at first stops the operation of hard disk, and the playback of order hard disc magnetic head stops the operation of other functional unit then, and the final injunction power module quits work, entire equipment shutdown or standby.Wherein key point is to stop hard disk work at once by detecting the ignition switch close event, finishes the home head of hard disk before the driver closes total lock switch, prevents to cause when closing total lock switch the damage of hard disk; And make mobile unit shutdown or standby, prevent from the automobile that does not have total lock switch or forget under the situation of closing total lock switch to exhaust automobile batteries.
Therefore mobile unit also requirement can use under dead ship condition, requires mobile unit to be in ignition switch and relies on automobile batteries power supply start operation when closing the OFF state.May forget the situation of closing mobile unit in this state, cause the mobile unit long-play, finally exhaust automobile batteries.Contain the hard disk mobile unit when the starting up, the break-make detecting unit detects the voltage of ignition switch ACC or ON, if voltage is low, shows that then automobile is in flameout state, and mobile unit then continues operation, and starts inner timer.When the time span that timer timing arrival is set, mobile unit is then at first closed the hard disk operation and is made its home head, then entire equipment shutdown or standby.
Mobile unit is run duration under the automobile batteries powering mode, and possible automobile starting engine becomes engine and drives generator powered, and this situation does not just need not close mobile unit again after the time interval of setting.Therefore the break-make detecting unit (voltage that detects ignition switch ACC or ON by low become height after, mobile unit stops timer, mobile unit continues normal operation.If it is low by hypermutation that the voltage of ignition switch ACC or ON takes place later again, showing that ignition switch switches to closes the OFF position, then at first stop the operation of hard disk, the playback of order hard disc magnetic head, stop the operation of other functional unit then, the final injunction power module quits work, entire equipment shutdown or standby.
Description of drawings
Fig. 1 is the position of the switch synoptic diagram of automobile ignition switch;
Fig. 2 is that mobile unit constitutes synoptic diagram;
Fig. 3 is the power supply link structure synoptic diagram of mobile unit and automobile;
Fig. 4 is the process flow diagram that carries out hard disk protection;
Fig. 5 starts the workflow diagram that contains the hard disk mobile unit under dead ship condition.
Embodiment
With reference to accompanying drawing method of the present invention is done following detailed explanation.
As shown in Figure 1, automobile under different conditions, the position that the ignition key crucial point is different;
As shown in Figure 2, in containing the mobile unit of hard disk, on the basis of existing control module, power supply unit and other functional unit, increase the break-make detecting unit.Wherein power supply unit inserts automobile power supply system by anode interface and negative pole interface, each unit power supply in equipment.The break-make detecting unit detects the voltage on the input interface Live.
As shown in Figure 3, when containing the hard disk mobile unit and be installed on the full-sized car, the anode interface of mobile unit inserts after total lock switch, be connected by the positive pole of total lock switch, on the automobile that does not have total lock switch, then directly be connected with the positive pole of automobile batteries and electricity generation system with automobile batteries and electricity generation system.
Simultaneously the ACC of ignition switch or ON output are connected with the incoming line Live of the break-make detecting unit that contains the hard disk mobile unit.
Embodiment
In operational process, 2 kinds of operational modes are arranged:
Pattern 1, as shown in Figure 4.
After containing the startup of hard disk mobile unit, the break-make detecting unit constantly detects the voltage of Live line, judges whether ignition switch is in on-state: if the voltage height shows that ignition switch is in ACC or ON position, be in on-state, then continue to detect Live voltage; If voltage is low, show that ignition switch is in the OFF position, be in off-state, illustrate that the driver is prepared to stop, then the break-make detecting unit sends close message to control module.
Control module at first stops hard disk operation after receiving close message from the break-make detecting unit, and the instruction home head.Because hard disk shut-down operation and home head are very fast, can the driver close ignition switch to close total lock switch between time in finish, always not closing of lock switch can be caused damage to hard disk.
Stop the operation of other functional unit then, realize shutdown or standby.
At some application, requirement can move at parking period and contain the hard disk mobile unit, in order to prevent to close the infringement of total lock switch to hard disk, prevents that simultaneously containing the hard disk mobile unit in parking exhausts automobile batteries, implement as shown in the figure 5 according to following pattern 2 processes.
Contain the hard disk mobile unit and start, at first check the voltage on the Live line, determine that ignition switch is to be in ACC or ON on-state, or closed condition.
If Live line voltage is higher than setting threshold 1, show that ignition switch is in ACC or ON on-state, then continue to detect Live line voltage.Under start Live line voltage is high situation, be lower than preset threshold if detect Live line voltage in operational process, show that then the ignition switch of automobile is closed, mobile unit is at first carried out the operation of closing hard disk, close other functional module then, realize shutdown or standby.To the impact of hard disk, can be implemented in the automatic shutdown of equipment on no total lock switch vehicle again when both having prevented to close total lock switch, and prevent under not unlatching of engine situation, to exhaust automobile batteries.
When containing the startup of hard disk mobile unit, if voltage is lower than setting threshold, show that then the fiery switch of fixed point is to be in closed condition, at this moment the engine of automobile is in flameout state.In this case, mobile unit picks up counting, and when arriving setting-up time, then execution stops hard disk work, stops other functional module, and shutdown of realization equipment or standby prevent the running down of battery automobile.
Under flameout state, during equipment work, constantly detect Live line voltage simultaneously,, show that automobile keeps flameout state, then continue timing and detect Live line voltage if voltage is lower than setting threshold.If Live line voltage becomes height, show that then ignition switch is in ACC or ON on-state, then stop timing, switch to ignition switch then and be under ACC or the ON on-state pattern and carry out Live line voltage detecting.If Live line voltage is continuously height, then the equipment continuous service removes non-artificial shutdown.If when finding that Live line voltage is lower than setting threshold, show that automobile ignition switch is in closed condition again from ACC or ON, then carry out and stop hard disk work, stop other functional module, shutdown of realization equipment or standby prevent when disconnecting total lock switch the impact to hard disk.
Claims (1)
1. the guard method of vehicle mounted computer hard disk and battery; it is characterized in that; mobile unit comprises power supply unit, control module, functional unit, hard disk and break-make detecting unit; ACC or ON output voltage by break-make detecting unit monitors ignition switch; as the foundation that stops shutdown of hard disk work and mobile unit or standby, the protection step is as follows:
1) utilize the break-make detecting unit to detect the ACC or the ON output voltage of automobile ignition switch;
2) just judge the automobile operating state according to the ACC or the ON output voltage of ignition switch;
When 3) automobile ignition switch switched to the OFF off-position by ON or ACC position, break-make detecting unit detection voltage was reduced to low from height, then stopped to hard disk operation the playback of instruction hard disc magnetic head, mobile unit shutdown or standby then at once;
When 4) automobile ignition switch was in the OFF off-position, it was low that the break-make detecting unit detects voltage, and mobile unit continues operation, and started internal timer, shutdown or standby automatically in the time that operation is set in advance;
When 5) automobile ignition switch was in the OFF off-position, after mobile unit started, ignition switch switched to ACC or ON position, and the break-make detecting unit detects voltage and uprised by low, then cancels internal clocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100141860A CN101246720B (en) | 2008-02-26 | 2008-02-26 | Vehicle mounted computer hard disk and battery protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100141860A CN101246720B (en) | 2008-02-26 | 2008-02-26 | Vehicle mounted computer hard disk and battery protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101246720A CN101246720A (en) | 2008-08-20 |
| CN101246720B true CN101246720B (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100141860A Expired - Fee Related CN101246720B (en) | 2008-02-26 | 2008-02-26 | Vehicle mounted computer hard disk and battery protection method |
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| CN (1) | CN101246720B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656394A (en) * | 2016-12-29 | 2017-05-10 | 北京奇虎科技有限公司 | Time completion method and apparatus of vehicle mobile terminal and vehicle mobile terminal |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8604937B2 (en) * | 2010-07-29 | 2013-12-10 | General Motors Llc | Telematics unit and method for controlling telematics unit for a vehicle |
| CN102485542B (en) * | 2010-12-03 | 2014-12-17 | 上海博泰悦臻电子设备制造有限公司 | Power management system, vehicular terminal and method for closing terminal equipment of vehicle |
| CN102485524B (en) * | 2010-12-03 | 2014-12-17 | 上海博泰悦臻电子设备制造有限公司 | Power management method and power management system |
| CN102485545B (en) * | 2010-12-03 | 2015-04-08 | 上海博泰悦臻电子设备制造有限公司 | Power management method and power management system |
| CN102485525B (en) * | 2010-12-03 | 2014-10-22 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted system and power management method and power management device thereof |
| CN103544975B (en) * | 2013-10-16 | 2016-01-06 | 上海通立信息科技有限公司 | A kind of guard method of vehicle-mounted hard disks |
| US9931956B2 (en) * | 2015-12-30 | 2018-04-03 | Thunder Power New Energy Vehicle Development Company Limited | Battery management system |
| US10217297B2 (en) * | 2017-04-19 | 2019-02-26 | Ford Global Technologies, Llc | Control module activation to monitor vehicles in a key-off state |
| CN109733293A (en) * | 2018-12-14 | 2019-05-10 | 江苏辰汉电子科技有限公司 | A kind of novel on-vehicle intelligent end device for supporting speech recognition |
| JP2021034088A (en) * | 2019-08-28 | 2021-03-01 | 株式会社東芝 | Magnetic disk device and data protection method for the magnetic disk device |
| CN110481464A (en) * | 2019-08-30 | 2019-11-22 | 吉利汽车研究院（宁波）有限公司 | A kind of control method and its device of vehicle low-voltage alarm shielding |
| CN111942154B (en) * | 2020-07-28 | 2022-03-08 | 广汽埃安新能源汽车有限公司 | Wake-up device for battery management system and vehicle |
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- 2008-02-26 CN CN2008100141860A patent/CN101246720B/en not_active Expired - Fee Related
Patent Citations (6)
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| CN1124702A (en) * | 1994-12-16 | 1996-06-19 | 大宇电子株式会社 | Apparatus for controlling tape-ejection in an automobile-installed video cassette recorder |
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| CN106656394A (en) * | 2016-12-29 | 2017-05-10 | 北京奇虎科技有限公司 | Time completion method and apparatus of vehicle mobile terminal and vehicle mobile terminal |
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| CN101246720A (en) | 2008-08-20 |
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