CN102485513A - Method for detecting tire leakage - Google Patents
Method for detecting tire leakage Download PDFInfo
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- CN102485513A CN102485513A CN2010105723418A CN201010572341A CN102485513A CN 102485513 A CN102485513 A CN 102485513A CN 2010105723418 A CN2010105723418 A CN 2010105723418A CN 201010572341 A CN201010572341 A CN 201010572341A CN 102485513 A CN102485513 A CN 102485513A
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- tire
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The invention discloses a method for detecting tire leakage, comprising the following steps: detecting the pressure value and temperature value of a tire every a predetermined interval of T; judging whether the pressure values of the tire of N times consecutive detections are continuously reduced at every time, and judging whether the accumulated pressure reduction of the tire in the N times consecutive detections is larger than a predetermined threshold; marking the temperature value and pressure value of the last time before the pressure value of the tire of the first detection is reduced as T0 and P0, respectively marking the temperature value and the pressure value of the Nth detection as TN and PN, and judging whether a value of TN-(T0*PN/P0) is larger than or equal to 5. According to the invention, if the pressure values of the tire of N times consecutive detections are continuously reduced at every time, and in the N times detections, the pressure reduction of the tire is larger than the predetermined threshold, and simultaneously the value of TN-(T0*PN/P0) is larger than or equal to 5, the tire leakage happens. The method can effectively solve the problem of false alarm of tire leakage sent by a tire pressure monitoring system, and makes the alarms accurate.
Description
Technical field
The present invention relates to the tire inflation pressure determining system of vehicle electric field, particularly relate to a kind of method that detects tire flat.
Background technology
Automobile is the modern vehicle, has become the essential vehicle of people's daily life.Along with the development of automobile industry, people are also increasingly high for the attention of safety, and TPMS (tire pressure monitoring system) is exactly the product of this safe revolution, and the means that a lot of countries have passed through law are with the standard fitting of TPMS as automobile.
Because tire is the important component part of automobile chassis, is not only carrying the all-mass of automobile, also will advance to automobile provides propulsive force, and plays the effect that relaxes ground shock.TPMS can monitor tire in real time, reminds chaufeur to note the potential safety hazard that possibly occur, and plays to shift to an earlier date trouble-saving effect.
But TPMS can not have the situation of flase alarm under the situation of fault often yet when carrying out Normal Alarm, finds through long test, and flase alarm takes place mainly due to more extraneous unexpected situation, mainly is ground-surface situation and variation of temperature.
Summary of the invention
The technical matters that the present invention will solve provides a kind of method that detects tire flat, can effectively solve the flase alarm problem of tire pressure monitoring system for tire flat, makes that warning is more accurate.
For solving the problems of the technologies described above, the method for detection tire flat of the present invention comprises the steps:
Step 1, every force value and temperature value that detects a tire at a distance from the pitch time T that sets;
Last temperature and pressure value before the force value that detects for the first time tire reduced is remembered respectively and is T
0, P
0, the temperature and pressure value of this tire that detects for the N time remembered respectively is T
N, P
N, judge T
N-(T
0* P
N/ P
0) whether more than or equal to 5; Wherein, the unit of temperature is degree Kelvin, and the unit of pressure is a handkerchief;
If the tire pressure value that N continuous time detects is at every turn all in continuous reduction, and in described N time is detected, the differential pressure low value of this tire accumulative total is greater than preset threshold, while T
N-(T
0* P
N/ P
0)>=5 then are judged as tire flat.
Find through long checking, if,, occur flase alarm easily if it is improper to detect strategy so at the high temperature storm that attacks suddenly in summer; Directly go the car carwash carwash also to occur flase alarm easily at vehicle through behind the long-time high-speed cruising in addition; Also have other similar situation, for example on the road surface of jolting very much, move, tire pressure all can constantly change.
Adopt method of the present invention, more genuine and believable through carrying out repeatedly force samples and just can get rid of the interference of road surface and temperature, make reporting to the police to the analysis of temperature traverse; Can solve the flase alarm problem that tire pressure monitoring system occurs in judgement gas leakage, it is truer to make that vehicle is reported to the police and reflected in the process of operation, the trouble of the examination of getting off when removing flase alarm from.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation:
Fig. 1 is the scheme of installation of sensor;
Fig. 2 is the scheme drawing that receives telltale;
Fig. 3 is method testing process figure of the present invention.
The specific embodiment
Tire pressure monitoring system mainly is made up of two parts, and referring to Fig. 1, first is a sensor 1, and it is contained in the inside of tire 2, is fixed on the wheel hub through tire tube valve, can monitor the temperature of tire 2 in real time, pressure, acceleration/accel situation.Combine shown in Figure 2ly again, second portion is installed in the position (what have is directly shown by instrument) that chaufeur is observed easily in the driving compartment for receiving telltale 3, can show current tire pressure, and temperature and failure condition let chaufeur understand the situation of tire.Sensor 1 and to receive between the telltale 3 be that wireless signal through high frequency carries out the signal transmission.
The sensor 1 that is installed in tire 2 the insides can constantly be measured the pressure and temperature of tire, can judge through analyzing whether tire leaks gas; If find tire 2 gas leakage then the wireless signal of result through high frequency sent to receive telltale 3 fast, receive telltale 3 and remind chaufeur to note tire fault through the mode (leakage alarm sign 7 as shown in Figure 2) of sound and light alarm.
As shown in Figure 2, receive telltale 3 and be provided with acknowledgement key 4, temperature, pressure switch key 5 and tire switch key 6.
In conjunction with shown in Figure 3, in one embodiment of this invention, detect the method for tire flat, comprise the steps:
Step 1, every force value and temperature value that detects a tire at a distance from 6 seconds.
Last temperature and pressure value before the force value that detects for the first time tire reduced is remembered respectively and is T
0, P
0, the temperature and pressure value of this tire that detects for the 8th time remembered respectively is T
8, P
8, judge T
8-(T
0* P
8/ P
0) whether more than or equal to 5; Wherein, the unit of temperature is degree Kelvin, and the unit of pressure is a handkerchief;
If the continuous tire pressure value that detects for 8 times is at every turn all in continuous reduction, and in described 8 times are detected, the differential pressure low value of this tire accumulative total is greater than 0.24bar, simultaneously T
8-(T
0* P
8/ P
0)>=5 then are judged as tire flat.
In the superincumbent description, saidly whether judge the continuous tire pressure value that detects for 8 times, the temporary tire pressure fluctuation that cause on the road surface of can avoiding jolting at every turn all in continuous reduction.Judge T
8-(T
0* P
8/ P
0) whether more than or equal to 5, the tire pressure that can avoid causing because of drop in temperature reduces.
The employing said method can be so that TPMS can carry out leakage alarm accurately in the process of using.
The pitch time that detects in the step 1 is not limited to detect once for 6 seconds, can change to other times according to the needs of real-time, and for example 2 seconds, 3 seconds ... 10 seconds or the like.
The number of times of continuous detecting also can be adjusted as required in the step 2, and for example 3 times, 4 times ... .10 inferior or the like.The differential pressure low value of tire accumulative total can suitably be adjusted according to the regulation of rules, for example can be 0.1bar, 0.2bar, 0.3bar or the like.
More than through the specific embodiment the present invention has been carried out detailed explanation, but these are not to be construed as limiting the invention.Under the situation that does not break away from the principle of the invention, those skilled in the art also can make many distortion and improvement, and these also should be regarded as protection scope of the present invention.
Claims (3)
1. a method that detects tire flat is characterized in that, comprises the steps:
Step 1, every force value and temperature value that detects a tire at a distance from the pitch time T that sets;
Step 2, whether judge tire pressure value that N continuous time detects, and in described N time was detected, this tire differential pressure low value totally was greater than preset threshold at every turn all in continuous reduction; N is the positive integer greater than 1;
Last temperature and pressure value before the force value that detects for the first time tire reduced is remembered respectively and is T
0, P
0, the temperature and pressure value of this tire that detects for the N time remembered respectively is T
N, P
N, judge T
N-(T
0* P
N/ P
0) whether more than or equal to 5; Wherein, the unit of temperature is degree Kelvin, and the unit of pressure is a handkerchief;
If the tire pressure value that N continuous time detects is at every turn all in continuous reduction, and in described N time is detected, the differential pressure low value of this tire accumulative total is greater than preset threshold, while T
N-(T
0* P
N/ P
0)>=5 then are judged as tire flat.
2. the method for claim 1, it is characterized in that: N equals 8.
3. the method for claim 1, it is characterized in that: said preset threshold is 0.24bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010572341 CN102485513B (en) | 2010-12-03 | 2010-12-03 | Method for detecting tire leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010572341 CN102485513B (en) | 2010-12-03 | 2010-12-03 | Method for detecting tire leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102485513A true CN102485513A (en) | 2012-06-06 |
| CN102485513B CN102485513B (en) | 2013-11-06 |
Family
ID=46151103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010572341 Expired - Fee Related CN102485513B (en) | 2010-12-03 | 2010-12-03 | Method for detecting tire leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102485513B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317981A (en) * | 2013-07-01 | 2013-09-25 | 合肥美赛电子有限公司 | Rapid air leakage detection method for tyre pressure monitoring system |
| CN104070946A (en) * | 2014-06-27 | 2014-10-01 | 浙江中科领航汽车电子有限公司 | Method and system for preventing mis-alarming of tire pressure monitoring system |
| CN105946473A (en) * | 2016-05-05 | 2016-09-21 | 郑州宇通客车股份有限公司 | Indirect type tire pressure monitoring method and device |
| CN106370224A (en) * | 2015-07-21 | 2017-02-01 | 昱晶能源科技股份有限公司 | Testing system and testing method thereof |
| CN110481249A (en) * | 2019-08-16 | 2019-11-22 | 上海能塔智能科技有限公司 | A kind of tire pressure leak detection method and tire pressure detecting device at a slow speed |
| CN113580854A (en) * | 2021-08-30 | 2021-11-02 | 重庆长安汽车股份有限公司 | Vehicle tire pressure monitoring and reminding system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040021560A1 (en) * | 2002-07-31 | 2004-02-05 | Kaoru Sasaki | Tire condition detecting system for wheeled vehicle |
| US20050162264A1 (en) * | 2004-01-22 | 2005-07-28 | Denso Corporation | Apparatus and method for tire monitoring system |
| US6997048B2 (en) * | 2002-11-20 | 2006-02-14 | Honda Motor Co., Ltd | Tire pressure monitoring system |
| CN101492000A (en) * | 2008-01-22 | 2009-07-29 | 苏州驶安特汽车电子有限公司 | Tire pressure real-time monitoring method using tire pressure monitoring system |
-
2010
- 2010-12-03 CN CN 201010572341 patent/CN102485513B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040021560A1 (en) * | 2002-07-31 | 2004-02-05 | Kaoru Sasaki | Tire condition detecting system for wheeled vehicle |
| US6997048B2 (en) * | 2002-11-20 | 2006-02-14 | Honda Motor Co., Ltd | Tire pressure monitoring system |
| US20050162264A1 (en) * | 2004-01-22 | 2005-07-28 | Denso Corporation | Apparatus and method for tire monitoring system |
| CN101492000A (en) * | 2008-01-22 | 2009-07-29 | 苏州驶安特汽车电子有限公司 | Tire pressure real-time monitoring method using tire pressure monitoring system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317981A (en) * | 2013-07-01 | 2013-09-25 | 合肥美赛电子有限公司 | Rapid air leakage detection method for tyre pressure monitoring system |
| CN103317981B (en) * | 2013-07-01 | 2016-02-24 | 合肥美赛电子有限公司 | The rapid air leakage method of inspection of system for monitoring pressure in tyre |
| CN104070946A (en) * | 2014-06-27 | 2014-10-01 | 浙江中科领航汽车电子有限公司 | Method and system for preventing mis-alarming of tire pressure monitoring system |
| CN104070946B (en) * | 2014-06-27 | 2016-09-07 | 浙江中科领航汽车电子有限公司 | A kind of method and system preventing system for monitoring pressure in tyre false alarm |
| CN106370224A (en) * | 2015-07-21 | 2017-02-01 | 昱晶能源科技股份有限公司 | Testing system and testing method thereof |
| CN105946473A (en) * | 2016-05-05 | 2016-09-21 | 郑州宇通客车股份有限公司 | Indirect type tire pressure monitoring method and device |
| CN110481249A (en) * | 2019-08-16 | 2019-11-22 | 上海能塔智能科技有限公司 | A kind of tire pressure leak detection method and tire pressure detecting device at a slow speed |
| CN110481249B (en) * | 2019-08-16 | 2021-05-25 | 上海能塔智能科技有限公司 | Tire pressure slow air leakage detection method and tire pressure detection device |
| CN113580854A (en) * | 2021-08-30 | 2021-11-02 | 重庆长安汽车股份有限公司 | Vehicle tire pressure monitoring and reminding system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102485513B (en) | 2013-11-06 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Dongya Inventor after: Han Benzhong Inventor after: Guo Changjiang Inventor after: Liang Lujun Inventor after: Gu Changfei Inventor before: Guo Changjiang Inventor before: Han Benzhong Inventor before: Huang Dongya Inventor before: Liang Lujun Inventor before: Gu Changfei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GUO CHANGJIANG HAN BENZHONG HUANG DONGYA LIANG LUJUN GU CHANGFEI TO: HUANG DONGYA HAN BENZHONG GUO CHANGJIANG LIANG LUJUN GU CHANGFEI |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20131106 |