CN104589956A - Automatic vehicle-mounted air conditioner control system and method - Google Patents
Automatic vehicle-mounted air conditioner control system and method Download PDFInfo
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- CN104589956A CN104589956A CN201410797707.XA CN201410797707A CN104589956A CN 104589956 A CN104589956 A CN 104589956A CN 201410797707 A CN201410797707 A CN 201410797707A CN 104589956 A CN104589956 A CN 104589956A
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- threshold value
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- air conditioner
- vehicle
- control signal
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004378 air conditioning Methods 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00764—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed
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- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention belongs to the technical field of intelligent control over vehicles, and particularly relates to an automatic vehicle-mounted air conditioner control system and method. The method includes the following steps that A, a microprocessor enters a preparation working state if an enabled signal is input and starts to acquire information; B, when the accelerator pedal position change rate exceeds the designated threshold value Y1, it is judged that a vehicle is in a large throttle state, a drive needs to accelerate emergently, and step D is executed; C, when the accelerator pedal position exceeds the designated threshold value Y2 and the engine rotating speed is smaller than the threshold value Y3, it is judged that the vehicle is in a large load state, and the step D is executed; D, the microprocessor outputs a control signal to turn off an air conditioner compressor; E, the microprocessor adjusts the threshold value Y1, the threshold value Y2 and the threshold value Y3 according to the frequency of the control signal output by the microprocessor. By means of the automatic vehicle-mounted air conditioner control system and method, the driving habit of a user can be intelligently learned to adjust the threshold values, the system is enabled to play the due functions, and the situation that an air conditioner is turned on or turned off frequently, and the service life of the system is shortened is avoided.
Description
Technical field
The invention belongs to Vehicular intelligent control technology field, particularly a kind of on-board air conditioner autonomous cruise speed system and method.
Background technology
Along with the day by day universal of automobile with widely use, comfortable, the power of automobile and energy saving become the problem that user more and more pays close attention to.In addition the rise again and again of oil price, light car due to its discharge capacity less, relative oil consumption is lower, receives increasing concern.But the problem of the under power of light car under anxious acceleration and heavy load state, also has a lot of client's complaints.How to solve the problem of light car under power under anxious acceleration and heavy load state, become the important topic promoting light car development.
For the problem of current light car under power, Japanese, U.S. system and domestic a lot of enterprises at present, adopt under anxious acceleration and heavy load state, disconnect air conditioner compressed electromechanical source in short-term, inactive air-conditioning compressor load, discharge the driving engine power consumption that air-conditioning compressor load takies in short-term, for travelling and accelerating.But, because the driving habit of chaufeur differs greatly, after the anxious acceleration mode of use disconnects air conditioner load function, frequent appearance causes air-conditioning often to disconnect due to chaufeur comparatively fierceness of driving, influential system part life, is even thought fault by client, also there will be user and drives to be accustomed to comparatively tenderness, disconnect airconditioning condition not meet always, cause the invalid nonideality that waits of functions of modules to occur.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of on-board air conditioner autonomous cruise speed system, improves drive propulsion, avoids the damage that the frequent start-stop of parts causes.
For realizing above object, the technical solution used in the present invention is: a kind of on-board air conditioner autonomous cruise speed system, comprise microprocessor, microprocessor receives vehicle speed signal, accelerator pedal position signal and accelerator pedal position rate of change signal, and these signals and threshold value built-in in microprocessor are compared the start and stop that the corresponding control signal of rear output controls air-conditioning compressor; Described microprocessor also adjusts built-in threshold value according to the stop frequency of its control signal exported.
Compared with prior art, there is following technique effect in the present invention: the driving habit of intelligence learning user regulates threshold value, system can be made to play due effect, be unlikely to again air-conditioning is frequently disconnected, cause the reduction of system life.
Another object of the present invention is the control method providing a kind of on-board air conditioner autonomous cruise speed system, improves drive propulsion, avoids the damage that the frequent start-stop of parts causes.
For realizing above object, the technical solution used in the present invention is: a kind of control method of on-board air conditioner autonomous cruise speed system, when comprising the steps: that (A) microprocessor has enable signal to input, enters dead work state, starts Information Monitoring; (B) when accelerator pedal position rate of change exceedes assign thresholds Y1, judge that vehicle is in large throttle state, chaufeur is badly in need of accelerating, and enters step D; (C) when accelerator pedal position exceedes assign thresholds Y2 and engine speed is less than threshold value Y3, judge that vehicle is in heavy load state, enter step D; (D) microprocessor exports control signal and cuts out air-conditioning compressor; (E) the control signal frequency that microprocessor exports according to it adjusts described threshold value Y1, Y2, Y3.
Compared with prior art, there is following technique effect in the present invention: the driving habit of intelligence learning user regulates threshold value, system can be made to play due effect, be unlikely to again air-conditioning is frequently disconnected, cause the reduction of system life.
Accompanying drawing explanation
Fig. 1 is functional block diagram of the present invention;
Fig. 2 is diagram of circuit of the present invention.
Detailed description of the invention
Below in conjunction with Fig. 1 to Fig. 2, the present invention is described in further detail.
Consult Fig. 1, a kind of on-board air conditioner autonomous cruise speed system, comprise microprocessor, microprocessor receives vehicle speed signal, accelerator pedal position signal and accelerator pedal position rate of change signal, and these signals and threshold value built-in in microprocessor are compared the start and stop that the corresponding control signal of rear output controls air-conditioning compressor; Described microprocessor also adjusts built-in threshold value according to the stop frequency of its control signal exported.Pass through microprocessor, according to the operational circumstances of user and the corresponding of vehicle, judge whether vehicle is under power state, in case of need, close air-conditioning compressor and improve the tractive performance of vehicle, make light car under power, the problem of driving performance difference is resolved.In addition, by the self-learning function of microprocessor, can the driving habit of adaptive different user, allow system works in rational scope, frequently can not cause air conditioner load service life reduction by opening and closing air-conditioning again.
Consult Fig. 2, a kind of control method of on-board air conditioner autonomous cruise speed system, when comprising the steps: that (A) microprocessor has enable signal to input, enter dead work state, start Information Monitoring; (B) when accelerator pedal position rate of change exceedes assign thresholds Y1, judge that vehicle is in large throttle state, chaufeur is badly in need of accelerating, and enters step D; (C) when accelerator pedal position exceedes assign thresholds Y2 and engine speed is less than threshold value Y3, judge that vehicle is in heavy load state, enter step D; (D) microprocessor exports control signal and cuts out air-conditioning compressor; (E) the control signal frequency that microprocessor exports according to it adjusts described threshold value Y1, Y2, Y3.The setting of threshold value Y1, Y2, Y3 should be reasonable, just can make air-conditioning compressor can opening and closing in a suitable case, but for different users, it tramples the speed of Das Gaspedal, dynamics is not quite similar, therefore can first experimentally be worth for threshold value Y1, Y2, Y3 give initial value and variation range here, then by the self-learning function of microprocessor, threshold value Y1, Y2, Y3 are finely tuned.
Specifically, microprocessor carries out the adjustment of each threshold value as follows.In described step e, microprocessor often exports a control signal, just perform once counting and count value is judged as follows: if count value accumulative in the time T1 specified is greater than setting value Y4,, air-conditioning compressor frequent start-stop is described, threshold value setting is unreasonable, microprocessor enters mandatory pause mode of operation, export without control signal in time T2, time T2 is here generally 1 minute, and enters threshold value increase flow process; If adjacent twice counting time period is greater than time T3, long-time system attonity is described, this is irrational, enters threshold value and reduces flow process.
Preferably, described threshold value increases in flow process, comprise the steps: that (a1) judges to cause count value accumulative in fixed time T1 to be greater than the major cause of setting value Y4, if major cause is vehicle be in large throttle state, then enter step b1, if major cause is vehicle be in heavy load state, then enter step c1; (b1) threshold value Y1 is increased; (c1) increase threshold value Y2 or reduce threshold value Y3.Described threshold value reduces in flow process, comprise the steps: that (a1) judges to cause adjacent twice counting time period to be greater than the major cause of time T3, if it is higher that major cause is threshold value Y1, then enter step b1, if to be threshold value Y2 higher or threshold value Y3 is lower for major cause, then enter step c1; (b1) threshold value Y1 is reduced; (c1) reduce threshold value Y2 or increase threshold value Y3.
When carrying out adjusting thresholds, in order to ensure stationarity and the reliability of adjustment, described threshold value Y1, Y2, Y3 increase at every turn or reduce fixing numerical value.Described threshold value Y1, Y2, Y3 respectively correspondence are provided with minimum value and maxim, the increase of threshold value Y1, Y2, Y3 or reduce the minimum value and the maxim being less than or equal to its correspondence that are all more than or equal to its correspondence.It should be noted that, threshold value can store in the microprocessor after the adjustment, if vehicle has multiple user to operate, can set up files on each of customers in the microprocessor, when different user is driven, select the storage data in the microprocessor of oneself correspondence.
Claims (7)
1. an on-board air conditioner autonomous cruise speed system, it is characterized in that: comprise microprocessor, microprocessor receives vehicle speed signal, accelerator pedal position signal and accelerator pedal position rate of change signal, and these signals and threshold value built-in in microprocessor are compared the start and stop that the corresponding control signal of rear output controls air-conditioning compressor; Described microprocessor also adjusts built-in threshold value according to the stop frequency of its control signal exported.
2. a control method for on-board air conditioner autonomous cruise speed system, comprises the steps:
(A) when microprocessor has enable signal to input, enter dead work state, start Information Monitoring;
(B) when accelerator pedal position rate of change exceedes assign thresholds Y1, judge that vehicle is in large throttle state, chaufeur is badly in need of accelerating, and enters step D;
(C) when accelerator pedal position exceedes assign thresholds Y2 and engine speed is less than threshold value Y3, judge that vehicle is in heavy load state, enter step D;
(D) microprocessor exports control signal and cuts out air-conditioning compressor;
(E) the control signal frequency that microprocessor exports according to it adjusts described threshold value Y1, Y2, Y3.
3. the control method of on-board air conditioner autonomous cruise speed system as claimed in claim 2, it is characterized in that: in described step e, microprocessor often exports a control signal, just performs once counting and judges as follows count value:
If count value accumulative in the time T1 specified is greater than setting value Y4, microprocessor enters mandatory pause mode of operation, exports in time T2 without control signal, and enters threshold value increase flow process;
If adjacent twice counting time period is greater than time T3, enters threshold value and reduce flow process.
4. the control method of on-board air conditioner autonomous cruise speed system as claimed in claim 3, is characterized in that: described threshold value increases in flow process, comprises the steps:
(a1) judge to cause count value accumulative in fixed time T1 to be greater than the major cause of setting value Y4, if major cause is vehicle be in large throttle state, then enter step b1, if major cause is vehicle be in heavy load state, then enter step c1;
(b1) threshold value Y1 is increased;
(c1) increase threshold value Y2 or reduce threshold value Y3.
5. the control method of on-board air conditioner autonomous cruise speed system as claimed in claim 3, is characterized in that: described threshold value reduces in flow process, comprises the steps:
(a1) judge to cause adjacent twice counting time period to be greater than the major cause of time T3, if to be threshold value Y1 higher for major cause, then enter step b1, if to be threshold value Y2 higher or threshold value Y3 is lower for major cause, then enter step c1;
(b1) threshold value Y1 is reduced;
(c1) reduce threshold value Y2 or increase threshold value Y3.
6. the control method of the on-board air conditioner autonomous cruise speed system as described in claim 4 or 5, is characterized in that: described threshold value Y1, Y2, Y3 increase at every turn or reduce fixing numerical value.
7. the control method of the on-board air conditioner autonomous cruise speed system as described in claim 4 or 5, it is characterized in that: described threshold value Y1, Y2, Y3 respectively correspondence are provided with minimum value and maxim, the increase of threshold value Y1, Y2, Y3 or reduce the minimum value and the maxim being less than or equal to its correspondence that are all more than or equal to its correspondence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410797707.XA CN104589956B (en) | 2014-12-19 | 2014-12-19 | Automatic vehicle-mounted air conditioner control system and method |
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| CN201410797707.XA CN104589956B (en) | 2014-12-19 | 2014-12-19 | Automatic vehicle-mounted air conditioner control system and method |
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| CN104589956A true CN104589956A (en) | 2015-05-06 |
| CN104589956B CN104589956B (en) | 2017-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539071A (en) * | 2015-12-23 | 2016-05-04 | 奇瑞汽车股份有限公司 | Automobile traveling control method and system |
| CN107639997A (en) * | 2017-09-22 | 2018-01-30 | 李伟 | A kind of automobile air-conditioner control method and its system |
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| JPS6390421A (en) * | 1986-10-02 | 1988-04-21 | Toyota Autom Loom Works Ltd | Controlling method for variable capacity compressor |
| CN2238991Y (en) * | 1995-10-05 | 1996-10-30 | 陈波 | Car air conditioner power controller |
| CN201521426U (en) * | 2009-09-28 | 2010-07-07 | 奇瑞汽车股份有限公司 | Control device of automobile air conditioner compressor |
| CN102795176A (en) * | 2012-07-31 | 2012-11-28 | 奇瑞汽车股份有限公司 | Engine load control system and control system thereof |
| CN103552443A (en) * | 2013-10-12 | 2014-02-05 | 奇瑞汽车股份有限公司 | Method for controlling automobile air conditioner when in crash acceleration of automobile |
-
2014
- 2014-12-19 CN CN201410797707.XA patent/CN104589956B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390421A (en) * | 1986-10-02 | 1988-04-21 | Toyota Autom Loom Works Ltd | Controlling method for variable capacity compressor |
| CN2238991Y (en) * | 1995-10-05 | 1996-10-30 | 陈波 | Car air conditioner power controller |
| CN201521426U (en) * | 2009-09-28 | 2010-07-07 | 奇瑞汽车股份有限公司 | Control device of automobile air conditioner compressor |
| CN102795176A (en) * | 2012-07-31 | 2012-11-28 | 奇瑞汽车股份有限公司 | Engine load control system and control system thereof |
| CN103552443A (en) * | 2013-10-12 | 2014-02-05 | 奇瑞汽车股份有限公司 | Method for controlling automobile air conditioner when in crash acceleration of automobile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539071A (en) * | 2015-12-23 | 2016-05-04 | 奇瑞汽车股份有限公司 | Automobile traveling control method and system |
| CN107639997A (en) * | 2017-09-22 | 2018-01-30 | 李伟 | A kind of automobile air-conditioner control method and its system |
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| CN104589956B (en) | 2017-03-22 |
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