CN104005849B - Relay adhesion judgment method and system - Google Patents
Relay adhesion judgment method and system Download PDFInfo
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- CN104005849B CN104005849B CN201410191320.XA CN201410191320A CN104005849B CN 104005849 B CN104005849 B CN 104005849B CN 201410191320 A CN201410191320 A CN 201410191320A CN 104005849 B CN104005849 B CN 104005849B
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Abstract
The invention provides a relay adhesion judgment method and system. The method includes the steps that an air inlet temperature value and an environment temperature value are acquired, the change value of the air inlet temperature and the environment temperature in a designated time interval is calculated, and whether a relay is in an adhesion state or not is judged according to the change value of the air inlet temperature and the environment temperature. Through the method and system, the adhesion state of the relay can be judged in the combination with the actual environment where a vehicle is located, and therefore the probability that other assemblies are damaged, and fire disasters are probably caused due to the fact that a heating grating is too hot after adhesion of the relay is avoided.
Description
Technical field
The present invention relates to technical field of engine control, particularly to a kind of relay adhesion determination methods and system.
Background technology
Before the normal startup of automobile engine, the air being typically necessary the input in electromotor is heated.Its mesh
Be low-temperature startup performance in order to improve electronic controlled diesel or gasoline engine, prevent from leading to because intake air temperature is too low the gaseous mixture can not
The generation of situations such as burning or " over-emitting black exhaust ".
In the prior art, in order to realize the inlet air heating to electromotor, mostly adopt the opening and closing of ecu control relay,
To control the confession electrical heating of heater grid in pipeline, when relay closes, storage battery is powered to heater grid and heated；Continuing
When electrical equipment disconnects, storage battery stops being powered to heater grid.
But when actually used, due to the physical cause of relay contacts part, it is understood that there may be relay closes for a long time
After can not normally open situation, consequently, it is possible to leading to intake air temperature drastically to raise, the wire of heater grid is overheated to burn
Fiery the problems such as.
Accordingly, it is desirable to provide a kind of determination methods being capable of the whether adhesion of real-time monitoring relay are avoiding sending out of accident
Raw.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of relay adhesion determination methods and system, by using
The changing value of intake air temperature and ambient temperature is compared, and judges that relay whether there is adhesion situation, then by user
Alarm prompt, thus avoid because overheated the led to other assemblies of relay adhesion post-heating grid damage and are likely to result in fire trouble
Possibility
A kind of relay adhesion determination methods, comprising:
Obtain inlet air temperature value and ambient temperature value；
Calculate at the appointed time interval in intake air temperature and ambient temperature changing value；
The whether adhesion of described relay is judged according to the changing value of described intake air temperature and ambient temperature.
Preferably, the described changing value according to described intake air temperature and ambient temperature judges the whether adhesion of described relay,
Particularly as follows:
If the incrementss of described intake air temperature changing value within the described specified time are more than described ambient temperature in described finger
Fix time the incrementss of interior changing value, assert that relay is in adhesion state.
Preferably, before described acquisition inlet air temperature value and ambient temperature value, also include:
The rotating speed of detection electromotor；
If described engine speed be 0, calculate at the appointed time interval in intake air temperature and ambient temperature changing value.
Preferably, before the rotating speed of detection electromotor, also include:
Judge whether described relay is logical-off state；
If described relay is logical-off state, detect the rotating speed of described electromotor.
Preferably, judge the whether adhesion of described relay in the described changing value according to described intake air temperature and ambient temperature
Afterwards, also include:
If judging, described relay, for adhesion state, carries out alarm prompt.
A kind of relay adhesion judges system, comprising: temperature sensor, temperature change computing module and adhesion judge mould
Block；
Described temperature sensor, for obtaining inlet air temperature value and ambient temperature value；
Described temperature change computing module, for calculating the at the appointed time described intake air temperature that gets and ring in interval
The changing value of border temperature；
Described adhesion judge module, for judging described relay according to the changing value of described intake air temperature and ambient temperature
Whether adhesion.
Preferably, described adhesion judge module includes: temperature gap comparison sub-module；
Described temperature gap comparison sub-module, for judging the increasing of described intake air temperature changing value within the described specified time
Whether dosage is more than the incrementss of described ambient temperature changing value within the described specified time；If being more than, assert that relay is in
Adhesion state.
Preferably, also include: revolution detector and rotating speed judge module；
Described revolution detector, for detecting the rotating speed of described electromotor；
Described rotating speed judge module, for judging whether described engine speed is 0；If 0, using described temperature change
Computing module calculate at the appointed time interval in described intake air temperature and ambient temperature changing value.
Preferably, also include: relay logic state acquisition module；
Described relay logic state acquisition module, for judging whether described relay is logical-off state；If institute
Stating relay is logical-off state, carries out engine speed judgement using described rotating speed judge module.
Preferably, also include: alarm prompt module；
Described alarm prompt module, for when judging described relay for adhesion state, carrying out alarm prompt.
Compared with prior art, the invention has the advantages that
In the present invention, obtain inlet air temperature value and ambient temperature value first, calculate afterwards and at the appointed time enter in interval
Temperature degree and the changing value of ambient temperature, the changing value finally according to intake air temperature and ambient temperature judges whether relay glues
Even.By using above method, it is possible to achieve with reference to the actual environment residing for vehicle, the adhesion state of relay is judged,
Thus avoiding because overheated the led to other assemblies of relay adhesion post-heating grid damage and are likely to result in the possibility of fire trouble.
Brief description
Fig. 1 is a kind of flow chart of relay adhesion determination methods first embodiment that the present invention provides；
Fig. 2 is a kind of flow chart of relay adhesion determination methods second embodiment that the present invention provides；
Fig. 3 is a kind of flow chart of relay adhesion determination methods 3rd embodiment that the present invention provides；
Fig. 4 is the theory diagram that a kind of relay adhesion that the present invention provides judges system first embodiment；
Fig. 5 is the theory diagram that a kind of relay adhesion that the present invention provides judges system second embodiment；
Fig. 6 is the theory diagram that a kind of relay adhesion that the present invention provides judges system 3rd embodiment；
Fig. 7 is the theory diagram that a kind of relay adhesion that the present invention provides judges system fourth embodiment.
Specific embodiment
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Referring to Fig. 1, this figure is a kind of flow chart of relay adhesion determination methods first embodiment that the present invention provides.
In the present embodiment, comprising:
S101: obtain inlet air temperature value and ambient temperature value.
S102: calculate at the appointed time interval in intake air temperature and ambient temperature changing value.
S103: the whether adhesion of described relay is judged according to the changing value of described intake air temperature and ambient temperature.
When carrying out relay adhesion and judging, obtain the air themperature having completed to heat being input in electromotor first
Value, and air ambient temperature value before heating.Wherein, ambient temperature value can be subject to after entering into gas inlet tube for air
The temperature value reaching after vehicle assembly heating impact or the air temperature value outside vehicle assembly.
After getting inlet air temperature value and ambient temperature value, calculate this two numerical value changing value within a specified time.
Wherein it is possible to calculated according to two interval end values of at the appointed time section, thus obtain air inlet in start time point and cut
The only temperature gap of time point, and surrounding air is in the temperature gap of start time point and stop time point；Or it is acceptable
It is calculated the change curve of inlet air temperature value and ambient temperature value at the appointed time section.
In addition it is intended that the time can be formulated according to the own situation of vehicle by user or developer.For example, it is assumed that
Relay will produce the overheated situation of grid in adhesion after 3 seconds, can be therefore 3 seconds or 2.5 seconds by specified set of time, this
Sample when grid is overheated or before it may determine that going out relay adhesion, thus avoiding the overheated situation of grid to occur.
After obtaining the changing value of intake air temperature and ambient temperature, judge relay whether adhesion.Due to closing in relay
Under conjunction state, heater grid does not heat to the inlet air in pipeline, therefore remove non-air before heater grid
Produce change, otherwise significantly increasing should be unable to occur in the inlet air temperature value in being input to electromotor.Accordingly, it is possible to use
The changing value of intake air temperature and the changing value of ambient temperature are compared judgement.For example: in use time interval, end value is counted
In the case of calculation, if the incrementss of intake air temperature within a specified time changing value within a specified time change more than ambient temperature
The incrementss of value, assert that relay is in adhesion state；Or in the case of being calculated with time interval curve values, judge
The change curve increment going out intake air temperature is more than the change curve increment of ambient temperature, then assert that relay is in adhesion state.
In the present embodiment, obtain inlet air temperature value and ambient temperature value first, calculate at the appointed time interval interior afterwards
Intake air temperature and the changing value of ambient temperature, the changing value finally according to intake air temperature and ambient temperature judges whether relay glues
Even.By using above method, it is possible to achieve with reference to the actual environment residing for vehicle, the adhesion state of relay is judged,
Thus avoiding because overheated the led to other assemblies of relay adhesion post-heating grid damage and are likely to result in the possibility of fire trouble.
Referring to Fig. 2, this figure is a kind of flow chart of relay adhesion determination methods second embodiment that the present invention provides.
In step s201, s204 in the present embodiment and s205 and a kind of relay adhesion determination methods first embodiment
Step s101, s102 is identical with s103, and here is not repeated to introduce,
In the present embodiment, before described acquisition inlet air temperature value and ambient temperature value, also include:
S202: the rotating speed of detection electromotor.
S203: judge whether described engine speed is 0.
S204: if described engine speed be 0, calculate at the appointed time interval in intake air temperature and ambient temperature change
Value.
In the first embodiment of the present invention it has been proposed that the method how judging relay whether adhesion.But existing
Real when using, the conduction of the motion due to itself of other parts of vehicle itself or heat, may be to entering temperature in pipeline
Angle value also produces corresponding impact.If now simply judged simply by the method obtaining intake air temperature, may obtain
To the inlet air temperature value being affected by other part heats, thus causing relay to produce the false judgment of adhesion.Therefore, sentencing
The real time status in view of vehicle are also needed to during disconnected relay adhesion state.
Specifically, before calculating the intake air temperature and ambient temperature changing value at the appointed time in interval, can also examine
Survey the tachometer value of electromotor.Due to the assembly of vehicle when vehicle motor is run, can be driven (as electromotor itself or water
Case etc.) operated or worked, corresponding heating effect can be produced.Therefore, enter temperature in specified time interval obtaining
After degree and ambient temperature, judge whether rotating speed is 0 to electromotor.If the rotating speed of electromotor is 0 then it is assumed that electromotor is not actuated,
The intake air temperature getting is exact value, can be judged with the ambient temperature getting.And if the rotating speed of electromotor not
For 0 then it is assumed that electromotor has been started up, obtained inlet air temperature value is inaccurate value, thus not sentenced with ambient temperature
Break and compare.
In the present embodiment, before obtaining inlet air temperature value and ambient temperature value, also include: detect turning of electromotor
Speed, judges whether engine speed is 0.If engine speed be 0, calculate at the appointed time interval in intake air temperature and ring
The changing value of border temperature.By using above method, the factor judging with the presence or absence of impact relay adhesion can be distinguished, from
And ensure the accuracy using the method result of calculation provided in the present invention.
Referring to Fig. 3, this figure is a kind of flow chart of relay adhesion determination methods 3rd embodiment that the present invention provides.
In step s301, s303-s306 in the present embodiment and a kind of relay adhesion determination methods second embodiment
Step s201, s202-s205 is identical, and here is not repeated to introduce,
In the present embodiment, before the rotating speed of detection electromotor, also include:
S302: judge whether described relay is logical-off state.
S303: if described relay is off-state, detect the rotating speed of described electromotor.
In the present embodiment, in addition it is also necessary to consider whether relay is that logic disconnects shape before the rotating speed of detection electromotor
State.If current relay is logic closure state, do not need to carry out adhesion judgement.Only in ecu control relay from patrolling
After volume closure state switches to logical-off state, the adhesion fault solving required for the present invention can be produced.Therefore, need into
Before row adhesion judges, judge whether relay is logical-off state, thus triggering corresponding relay adhesion judgement action.
In the present embodiment, also include:
S307: described relay, for adhesion state, carries out alarm prompt if judging.
After judging that relay is adhesion state, in order to avoid occurring causing adjacent component to damage because heater grid is overheated
The problem that even vehicle fire is suffered from, can carry out alarm prompt to vehicle user of service.For example: driver insertion initiation key but
And before not actuated electromotor, judge that the situation of adhesion in relay when ecu control relay carries out grid heating.This
When, alarm prompt can be carried out in the position such as instrumental panel of vehicle.If there is the Warning Service of far-end, vehicle can also be to remote
The service centre at end carries out alerting service, with the safety that Baoding vehicle assembly and vehicle are overall.Driver or remote service centre
Troubleshooting can be carried out to relay adhesion, thus excluding the overheated hidden danger of grid.
Based on a kind of above-mentioned relay adhesion determination methods, present invention also offers a kind of relay adhesion judges system,
To describe its ingredient with reference to specific embodiment in detail.
Referring to Fig. 4, this figure is the theory diagram that a kind of relay adhesion that the present invention provides judges system first embodiment.
In the present embodiment, comprising: temperature sensor 10, temperature change computing module 20 and adhesion judge module 30.
Described temperature sensor 10, for obtaining inlet air temperature value and ambient temperature value.
Described temperature change computing module 20, for calculate at the appointed time in interval the described intake air temperature that gets and
The changing value of ambient temperature.
Described adhesion judge module 30, for judging described relay according to the changing value of described intake air temperature and ambient temperature
Device whether adhesion.
When carrying out relay adhesion and judging, obtain first by temperature sensor 10 be input to complete in electromotor
Become the air temperature value of heating, and air ambient temperature value before heating.Wherein, ambient temperature value can enter for air
The temperature value reaching after being affected by vehicle assembly heating to after gas inlet tube or the Air Temperature outside vehicle assembly
Angle value.
After getting inlet air temperature value and ambient temperature value, calculate this two numerical value using temperature change computing module 20
Changing value within a specified time.Wherein it is possible to be calculated according to two interval end values of at the appointed time section, thus obtaining
Air inlet is in the temperature gap of start time point and stop time point, and surrounding air is in start time point and stop time point
Temperature gap；Or the change curve of inlet air temperature value and ambient temperature value at the appointed time section can also be calculated.
In addition it is intended that the time can be formulated according to the own situation of vehicle by user or developer.For example, it is assumed that
Relay will produce the overheated situation of grid in adhesion after 3 seconds, can be therefore 3 seconds or 2.5 seconds by specified set of time, this
Sample when grid is overheated or before it may determine that going out relay adhesion, thus carrying out alarm prompt, thus avoiding grid mistake
The situation of heat occurs.
After obtaining the changing value of intake air temperature and ambient temperature, judge whether relay glues using adhesion judge module 30
Even.Because under relay closure state, heater grid does not heat to the inlet air in pipeline, therefore except non-air exists
Produce change before heater grid, otherwise the inlet air temperature value in being input to electromotor should be unable to occur significantly
Increase.Accordingly, it is possible to use the changing value of intake air temperature and the changing value of ambient temperature are compared judgement.
In the present embodiment, comprising: temperature sensor, temperature change computing module and adhesion judge module.Wherein, temperature
Sensor is used for obtaining inlet air temperature value and ambient temperature value.It is at the appointed time interval interior that temperature change computing module is used for calculating
The intake air temperature getting and the changing value of ambient temperature.Adhesion judge module is used for the change according to intake air temperature and ambient temperature
Change value judges relay whether adhesion.By using system above, it is possible to achieve with reference to the actual environment residing for vehicle to relay
The adhesion state of device is judged, thus avoid damaging because of overheated the led to other assemblies of relay adhesion post-heating grid and
It is likely to result in the possibility of fire trouble.
Referring to Fig. 5, this figure is the theory diagram that a kind of relay adhesion that the present invention provides judges system second embodiment.
In the present embodiment, described adhesion judge module 30 includes: temperature gap comparison sub-module 301.
Described temperature gap comparison sub-module 301, for judging described intake air temperature changing value within the described specified time
Incrementss whether more than the incrementss of described ambient temperature changing value within the described specified time；If being more than, assert relay
It is in adhesion state.
Due to adhesion judgement being carried out to relay using adhesion judge module 30, therefore can be in adhesion judge module 30
Multiple judging submodules are set, for example: setting temperature gap comparison sub-module 301.Temperature gap comparison sub-module 301 is in adhesion
In the case that use time interval end value is calculated, if judging the incrementss of intake air temperature within a specified time changing value
More than the incrementss of ambient temperature within a specified time changing value, then assert that relay is in adhesion state, otherwise assert relay
Device is non-adhesion state.
In the present embodiment, include in adhesion judge module: temperature gap comparison sub-module.Wherein, temperature gap ratio
Compared with submodule be used for judging intake air temperature within a specified time changing value incrementss whether more than ambient temperature at the appointed time
The incrementss of interior changing value, if being more than, assert that relay is in adhesion state.By using system above, it is possible to achieve combine
Actual environment residing for vehicle more accurately judges to the adhesion state of relay, thus after avoiding because of relay adhesion
Overheated the led to other assemblies of heater grid damage and are likely to result in the possibility of fire trouble.
Referring to Fig. 6, this figure is the theory diagram that a kind of relay adhesion that the present invention provides judges system 3rd embodiment.
In the present embodiment, also include: revolution detector 40 and rotating speed judge module 50.
Described revolution detector 40, for detecting the rotating speed of described electromotor.
Described rotating speed judge module 50, for judging whether described engine speed is 0；If 0, become using described temperature
Change computing module 20 calculate at the appointed time interval in described intake air temperature and ambient temperature changing value.
When reality uses, the conduction of the motion due to itself of other parts of vehicle itself or heat, may be to pipe
Inlet air temperature value in line also produces corresponding impact, if now simply sentenced simply by the method obtaining intake air temperature
Disconnected, the inlet air temperature value being affected by other part heats may be obtained, thus causing the mistake that relay produces adhesion to sentence
Disconnected.Therefore, the real time status in view of vehicle are also needed to when judging relay adhesion state.
Specifically, revolution detector 40 and rotating speed judge module 50 are installed in the system of the present invention.Calculating air inlet
Temperature and ambient temperature at the appointed time, before the changing value in interval, detect the rotating speed of electromotor using revolution detector 40
Value.Assembly (as electromotor itself or water tank etc.) due to when vehicle motor is run, can drive vehicle is operated
Or work, corresponding heating effect can be produced.Therefore, in the intake air temperature obtaining in specified time interval and ambient temperature
Afterwards, judge whether rotating speed is 0 to electromotor using rotating speed judge module 50.If the rotating speed of electromotor be 0 then it is assumed that electromotor not
Start, the intake air temperature getting should be exact value, it is possible to use temperature sensor 10, temperature change computing module 20 and adhesion
Judge module 30 carries out relay adhesion judgement.And if the rotating speed of electromotor is not the institute 0 then it is assumed that electromotor has been started up
The inlet air temperature value obtaining is inaccurate value, thus do not carry out relay adhesion to judge to compare.
In the present embodiment, in the present embodiment, also include: revolution detector and rotating speed judge module.Wherein, rotating speed inspection
Survey device to be used for detecting the rotating speed of described electromotor.Rotating speed judge module is used for judging whether engine speed is 0；If 0, use
Temperature change computing module calculate at the appointed time interval in intake air temperature and ambient temperature changing value.By using above it is
System, can distinguish the factor judging with the presence or absence of impact relay adhesion, thus ensureing using the side provided in the present invention
The accuracy of method result of calculation.
Referring to Fig. 7, this figure is the theory diagram that a kind of relay adhesion that the present invention provides judges system fourth embodiment.
In the present embodiment, also include: relay logic state acquisition module 60.
Described relay logic state acquisition module 60, for judging whether described relay is logical-off state；If
Described relay is logical-off state, carries out engine speed judgement using described rotating speed judge module 50.
Described alarm prompt module, for when judging described relay for adhesion state, carrying out alarm prompt.
In the present embodiment, in addition it is also necessary to consider whether relay is that logic disconnects shape before the rotating speed of detection electromotor
State.If current relay is logic closure state, do not need to carry out adhesion judgement.Only in ecu control relay from patrolling
After volume closure state switches to logical-off state, the adhesion fault solving required for the present invention can be produced.Therefore, need into
Before row adhesion judges, can also judge whether relay is logical-off state using relay logic state acquisition module 60,
Thus triggering corresponding relay adhesion judgement action.
In the present embodiment, also include: alarm prompt module 70.
Described alarm prompt module 70, for when judging described relay for adhesion state, carrying out alarm prompt.
After judging that relay is adhesion state, in order to avoid occurring causing adjacent component to damage because heater grid is overheated
The problem that even vehicle fire is suffered from, it is possible to use alarm prompt module 70 carries out alarm prompt to vehicle user of service.For example: drive
Member insertion initiation key but and before not actuated electromotor, ecu control relay carry out grid heating when judge relay
The situation of adhesion occurs.Now, alarm prompt can be carried out in the position such as instrumental panel of vehicle.Pre- police uniform if there is far-end
Business, vehicle can also carry out alerting service to the service centre of far-end, with the safety that Baoding vehicle assembly and vehicle are overall.Drive
Member or remote service centre can carry out troubleshooting to relay adhesion, thus excluding the overheated hidden danger of grid.
The above, be only presently preferred embodiments of the present invention, and not the present invention is made with any pro forma restriction.Though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention.Any it is familiar with those skilled in the art
Member, without departing under technical solution of the present invention ambit, can be utilized the methods and techniques content of the disclosure above to the present invention
Technical scheme makes many possible variations and modification, or the Equivalent embodiments being revised as equivalent variations.Therefore, every without departing from
The content of technical solution of the present invention, according to the present invention technical spirit to any simple modification made for any of the above embodiments, equivalent
Change and modification, all still fall within the range of technical solution of the present invention protection.
Claims (6)
1. a kind of relay adhesion determination methods are it is characterised in that include:
Obtain inlet air temperature value and ambient temperature value；
Calculate at the appointed time interval in intake air temperature and ambient temperature changing value；
The whether adhesion of described relay is judged according to the changing value of described intake air temperature and ambient temperature；
The described changing value according to described intake air temperature and ambient temperature judges the whether adhesion of described relay, particularly as follows:
If the incrementss of described intake air temperature changing value within the described specified time are more than described ambient temperature when described specified
The incrementss of interior changing value, assert that relay is in adhesion state；
Before described acquisition inlet air temperature value and ambient temperature value, also include:
The rotating speed of detection electromotor；
If described engine speed be 0, calculate at the appointed time interval in intake air temperature and ambient temperature changing value.
2. method according to claim 1 is it is characterised in that before the rotating speed of detection electromotor, also include:
Judge whether described relay is logical-off state；
If described relay is logical-off state, detect the rotating speed of described electromotor.
3. the method according to any one of claim 1-2 is it is characterised in that described according to described intake air temperature and environment
The changing value of temperature judges that described relay, whether after adhesion, also includes:
If judging, described relay, for adhesion state, carries out alarm prompt.
4. a kind of relay adhesion judges system it is characterised in that including: temperature sensor, temperature change computing module and viscous
Even judge module；
Described temperature sensor, for obtaining inlet air temperature value and ambient temperature value；
Described temperature change computing module, for calculating the at the appointed time described intake air temperature that gets and environment temperature in interval
The changing value of degree；
Whether described adhesion judge module, for judging described relay according to the changing value of described intake air temperature and ambient temperature
Adhesion；
Described adhesion judge module includes: temperature gap comparison sub-module；
Described temperature gap comparison sub-module, for judging the incrementss of described intake air temperature changing value within the described specified time
Whether it is more than the incrementss of described ambient temperature changing value within the described specified time；If being more than, assert that relay is in adhesion
State；
Also include: revolution detector and rotating speed judge module；
Described revolution detector, for detecting the rotating speed of electromotor；
Described rotating speed judge module, for judging whether described engine speed is 0；If 0, calculated using described temperature change
Module calculate at the appointed time interval in described intake air temperature and ambient temperature changing value.
5. system according to claim 4 is it is characterised in that also include: relay logic state acquisition module；
Described relay logic state acquisition module, for judging whether described relay is logical-off state；If described continue
Electrical equipment is logical-off state, carries out engine speed judgement using described rotating speed judge module.
6. the system according to any one of claim 4-5 is it is characterised in that also include: alarm prompt module；
Described alarm prompt module, for when judging described relay for adhesion state, carrying out alarm prompt.
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| CN201410191320.XA CN104005849B (en) | 2014-05-07 | 2014-05-07 | Relay adhesion judgment method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105332902B (en) * | 2015-12-01 | 2017-08-15 | 珠海格力电器股份有限公司 | A kind of compressor relay adhesion guard method, device and air-conditioning |
| CN108661839B (en) * | 2017-03-30 | 2020-05-19 | 中国航空工业集团公司西安航空计算技术研究所 | Diesel engine grid heating control method based on state machine |
| CN107544021A (en) * | 2017-07-17 | 2018-01-05 | 广东美的厨房电器制造有限公司 | Detection method, system and micro-wave oven, the computer equipment of relay adhesion situation |
| CN114108240B (en) * | 2020-08-27 | 2023-03-07 | 无锡小天鹅电器有限公司 | Heating control method and device, clothes treatment equipment and storage medium |
| CN114582670A (en) * | 2022-03-07 | 2022-06-03 | 潍柴动力股份有限公司 | Method and system for judging aging of relay and preventing excessive heating of grating |
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| JPH11185582A (en) * | 1997-12-22 | 1999-07-09 | Nippon Signal Co Ltd:The | Load driving circuit |
| JP2005326037A (en) * | 2004-05-12 | 2005-11-24 | Matsushita Electric Ind Co Ltd | Planar heating device |
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| CN102874124A (en) * | 2011-07-14 | 2013-01-16 | 北汽福田汽车股份有限公司 | Relay control strategy and device for battery of electric vehicle |
| CN202500683U (en) * | 2011-12-30 | 2012-10-24 | 洛阳理工学院 | Starting preheating control device of automobile engine |
| CN103064401A (en) * | 2012-12-12 | 2013-04-24 | 潍柴动力股份有限公司 | Air inlet heating system fault diagnosis method, controller and system |
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