CN103538430B - A kind of overload based reminding method based on tire pressure monitoring system - Google Patents
A kind of overload based reminding method based on tire pressure monitoring system Download PDFInfo
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- CN103538430B CN103538430B CN201310445351.9A CN201310445351A CN103538430B CN 103538430 B CN103538430 B CN 103538430B CN 201310445351 A CN201310445351 A CN 201310445351A CN 103538430 B CN103538430 B CN 103538430B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
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- 206010039203 Road traffic accident Diseases 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The present invention relates to a kind of overload based reminding method based on tire pressure monitoring system, pressure in each tire and temperature is detected by tire monitor sensor timing, and by projector, tire pressure and tyre temperature are sent to receptor, to the pressure that tire produces, receptor judges whether vehicle is in overload condition according to tire pressure and tyre temperature, if vehicle is in overload condition, carry out overload prompting, overload detection timing property is good, efficiency is high, and accuracy rate is high, and implement convenient and simple, cost is low.
Description
Technical field
The present invention relates to technical field of vehicle safety, be specifically related to a kind of overload based reminding method based on tire pressure monitoring system.
Background technology
Along with expanding economy, automobile is widely used as a kind of vehicle, brings great convenience to the work of people and life.But along with the application of automobile is more and more extensive, the moving velocity of automobile is more and more faster, the frequency that traffic accident occurs also reaches surprising height.For how to reduce there is traffic accident possibility, improve the safety of running car and become automotive field primary study direction.Statistics shows: traffic accident increase major cause be run at high speed middle cause because of tire fault blow out.And run at high speed in process at automobile, tire fault be lethality maximum be also the accident potential of the most difficult prevention, be the major reason that sudden traffic accident occurs.In order to solve tire fault, the technical personnel that prevents from blowing out proposes a kind of tire pressure monitoring system (TirePressureMonitoringSystem, TPMS).TPMS, by adopting the tire pressure sensing unit of twireless radio-frequency communication and tire pressure monitoring unit, achieves the real-time monitoring to tire pressure, when the air pressure, temperature etc. of tire occur abnormal and alarm, effectively prevents the traffic accident that tire fault causes.
Wherein, automobile overload causes traffic accident important factor.Because transport truck and passenger vehicle are in operational process, in order to the maximization of profit-push, often there is the situation of overload.And in prior art, determine that the method for inspection whether transport truck overloads was generally weighbridge, crossing weighbridge needs appointed place could realize detecting, poor real, and efficiency is low; A year super detection method for passenger vehicle can only be check the number of people, and poor real, efficiency is low.
Summary of the invention
The object of the invention is to overcome shortcomings and deficiencies of the prior art, provide a kind of overload based reminding method based on tire pressure monitoring system, real-time is good, and efficiency is high.
Object of the present invention is achieved through the following technical solutions: a kind of overload based reminding method based on tire pressure monitoring system, is characterized in that, specifically comprise the following steps:
Step 1, the pressure detected by tire monitor sensor timing in tire, and be sent to receptor by its corresponding projector;
According to tire pressure, step 2, receptor judge whether vehicle is in overload condition, if vehicle is in overload condition, carry out overload prompting.
As preferably, preset overburden pressure threshold value in the receiver, and step 1 is specially: by the pressure in tire monitor sensor timing detection tire and temperature, and by its corresponding projector, tire pressure and tyre temperature are sent to receptor;
Described step 2 is specially:
Receptor by tire pressure deduct tyre temperature to the pressure that tire produces obtain vehicle load produce load-carrying pressure;
Judge whether the load-carrying pressure of vehicle exceedes the overburden pressure threshold value pre-set, remind if then carry out overload.
As preferably, tyre temperature rises and causes tire pressure rising value to be:
△P=（t-T）÷（T+273）×P×A（1）
Wherein, t is tyre temperature (unit for degree Celsius), and P is tire standards pressure, pre-sets in the receiver, and T is normal temperature 25 DEG C, and A is the expansion factor of tire,
Described tire load-carrying pressure is:
P
e=P
m-△P（2）
Wherein P
mfor the tire pressure that tire monitor sensor detects.
As preferably, described expansion factor A is 0.7.
As preferably, described overburden pressure threshold value is the tire pressure that tire is corresponding when its ultimate load.
As preferably, when the tire load-carrying pressure of vehicle load part all exceedes the overburden pressure threshold value pre-set, carry out overload by outdevice and remind.
As preferably, described projector is radio frequency transmitter.
As preferably, described outdevice comprises gauge panel, telltale and/or loud speaker.
As preferably, described overload prompting comprises indicator lamp alerting pattern and/or voice reminder mode.
The present invention comprises following advantage and beneficial effect compared to existing technology:
(1) the present invention detects pressure in each tire and temperature by tire monitor sensor timing, and by projector, tire pressure and tyre temperature are sent to receptor, to the pressure that tire produces, receptor judges whether vehicle is in overload condition according to tire pressure and tyre temperature, if vehicle is in overload condition, carry out overload prompting, overload detection real-time is good, efficiency is high, accuracy rate is high, and implement convenient and simple, cost is low, by the load condition of Real-Time Monitoring vehicle, improve the safety of driving.
(2) adopt radio frequency transmitter to send the information such as tire pressure and tyre temperature, reduce the wiring of vehicle, reduce costs, reduce operation complexity.
(3) overburden pressure threshold value is preset by judging whether each tire load-carrying pressure of vehicle load part all exceedes, just carry out overload to remind when each tire load-carrying pressure of vehicle load part all exceedes and presets overburden pressure threshold value, effectively can prevent erroneous judgement, improve the accuracy rate of this overload based reminding method further.
(4) tire pressure monitoring system had by vehicle itself and gauge panel, telltale and/or loud speaker carry out overload to be reminded, and reduces and realizes cost, and realizes simple.
Accompanying drawing explanation
Fig. 1 is the overload based reminding method diagram of circuit that the present invention is based on tire pressure monitoring system.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Based on an overload based reminding method for tire pressure monitoring system, preset overburden pressure threshold value P in the receiver
0and tire standards pressure P, described overburden pressure threshold value P
0obtain by experiment, be specially: the overall load-carrying of automobile makes each tire of its load-carrying part reach its ultimate load, and under this state, the tire pressure of load-carrying part is the overload margin pressure of tire, as overburden pressure threshold value P
0.
Relational expression according to quality and pressure: P=mg/S,
Wherein, P is tire pressure (unit: Pa), and m is vehicle load (unit: Kg), and S is tire and contact area of ground (unit: m
2).
With four-wheel roadlice for experimental subjects, tire radius is 30cm, vehicle body is heavily 1300kg, and tyre width is 18cm, mounting tyre monitoring sensor in tire, under standard tire pressure 230Kpa condition, the length of kiss the earth is 8cm, tire load-carrying index is 94, and tyre temperature is fixed value, normal temperature 25 DEG C, carload is test under the condition of variable, obtains table 1:
Table 1
From table 1, along with vehicle load increases, tire bear pressure increase, tire pressure increases thereupon, and the area of contact on tire and ground increases thereupon, and the area of contact on tire and ground increases and reduces the rate of change of tire pressure with carload.
When automobile is in load-carrying limit, each tire of its corresponding load-carrying part is in load-carrying limit, and the tire pressure of now load-carrying part is ultimate pressure, as overburden pressure threshold value P
0.
As shown in Figure 1, specifically comprise the following steps:
S101, detect pressure in each tire and temperature by the tire monitor sensor timing be arranged in each tire, and by its corresponding radio frequency transmitter, tire pressure and tyre temperature are sent to receptor.
S102, receptor receive the tire pressure and tyre temperature that radio frequency transmitter in each tire sends, and by load-carrying pressure that tire pressure and the tyre temperature of each tire produce the vehicle load of its corresponding tire of calculation of pressure that tire produces.By the Ideal-Gas Equation: PV=nRT, wherein p refers to the pressure of idea1 gas, and V is the volume of idea1 gas, and n represents the amount of gaseous matter, and T then represents the thermodynamic temperature of idea1 gas; Also have constant a: R to be ideal gas constant, as seen when tyre temperature rises, tire pressure also linearly rises due to the impact of tyre temperature.Therefore the tire pressure removing tyre temperature that the calculating of above-mentioned load-carrying pressure should be detected by tire monitor sensor is on the impact of tire pressure.Gas expansion in tire is caused and gas volume increase in tire because tyre temperature rises, therefore tyre temperature rises and causes tire pressure rising value to be: △ P=(t-T) ÷ (T+273) × P × A, wherein, t is tyre temperature (unit for degree Celsius), P is tire standards pressure, T is normal temperature 25 DEG C, and A is the expansion factor of tire, the expansion factor A=0.7 of tire.Therefore tire load-carrying pressure is P
e=P
m-△ P, wherein P
mfor the tire pressure that tire monitor sensor detects.
With four-wheel car tires for experimental subjects, be 30cm at tire radius, vehicle body is heavily 1300kg, and tyre width is 18cm, is 8cm in the length on standard tire contacted under pressure ground, tire load-carrying index is 94, tire standards pressure is 230Kpa, and carload is fixed value, and tyre temperature is under the condition of variable, test, obtain table 2:
Table 2
From table 2, along with the rising tire pressure of tyre temperature rises thereupon, along with the increase of pressure, inside tires volume has certain expansion, then relatively can reduce the rate of change of pressure, can be calculated tire inflation factors A be about 0.7 by table 2 observed data.
S103, receptor judge each tire load-carrying pressure P of the load-carrying part of vehicle in same sense cycle
ewhether all exceed the overburden pressure threshold value P pre-set
0if then judge that this vehicle is in overload condition, receptor sends overload and reminds instruction to corresponding outdevice, and corresponding outdevice carries out overload to be reminded, otherwise abandons this detection data.When truck attached most importance to by automobile, the load-carrying part of described vehicle is attached most importance to truck trailers part.
Described outdevice comprises gauge panel and/or telltale and/or loud speaker.Described overload prompting comprises indicator lamp alerting pattern and/or voice reminder mode.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. based on an overload based reminding method for tire pressure monitoring system, it is characterized in that, preset overburden pressure threshold value in the receiver, specifically comprise the following steps:
Step 1, detect pressure in tire and temperature by tire monitor sensor timing, and by its corresponding projector, tire pressure and tyre temperature are sent to receptor;
Step 2, receptor by tire pressure deduct tyre temperature to the pressure that tire produces obtain vehicle load produce load-carrying pressure;
Judge whether the load-carrying pressure of vehicle exceedes the overburden pressure threshold value pre-set, remind if then carry out overload;
Tyre temperature rises and causes tire pressure rising value to be:
△P＝(t-T)÷(T+273)×P×A(1)
Wherein, t is tyre temperature (unit for degree Celsius), and P is tire standards pressure, pre-sets in the receiver, and T is normal temperature 25 DEG C, and A is the expansion factor of tire,
Described tire load-carrying pressure is:
P
e＝P
m-△P(2)
Wherein, P
mfor the tire pressure that tire monitor sensor detects.
2. the overload based reminding method based on tire pressure monitoring system according to claim 1, is characterized in that, described expansion factor A is 0.7.
3. the overload based reminding method based on tire pressure monitoring system according to claim 2, is characterized in that, described overburden pressure threshold value is the tire pressure that tire is corresponding when its ultimate load.
4. the overload based reminding method based on tire pressure monitoring system according to claim 1, is characterized in that, when the tire load-carrying pressure of vehicle load part all exceedes the overburden pressure threshold value pre-set, carries out overload remind by outdevice.
5. the overload based reminding method based on tire pressure monitoring system according to claim 4, is characterized in that, described projector is radio frequency transmitter.
6. the overload based reminding method based on tire pressure monitoring system according to claim 5, it is characterized in that, described outdevice comprises gauge panel, telltale and/or loud speaker.
7. the overload based reminding method based on tire pressure monitoring system according to claim 6, is characterized in that, described overload prompting comprises indicator lamp alerting pattern and/or voice reminder mode.
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| CN201310445351.9A CN103538430B (en) | 2013-09-26 | 2013-09-26 | A kind of overload based reminding method based on tire pressure monitoring system |
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| CN201310445351.9A CN103538430B (en) | 2013-09-26 | 2013-09-26 | A kind of overload based reminding method based on tire pressure monitoring system |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI565602B (en) * | 2014-09-17 | 2017-01-11 | Sung Jung Minute Industry Co Ltd | A method of judging vehicle load abnormality |
| CN106143002A (en) * | 2015-03-31 | 2016-11-23 | 深圳市赛格导航科技股份有限公司 | A kind of vehicle load detecting system and method |
| CN105444852B (en) * | 2015-12-25 | 2018-04-20 | 长沙湖大环保科技有限公司 | Vehicle load detection method and device, vehicle real-time load monitoring method and system based on TPMS |
| CN107730180A (en) * | 2017-10-25 | 2018-02-23 | 惠龙易通国际物流股份有限公司 | A kind of cargo transport monitoring method, equipment and computer-readable storage medium |
| CN110949073B (en) * | 2019-11-26 | 2021-05-18 | 中联重科股份有限公司 | Engineering vehicle tire pressure monitoring system, equipment and storage medium |
| CN111169378B (en) * | 2020-01-22 | 2022-08-30 | 浙江吉利汽车研究院有限公司 | Vehicle overload detection method, system and device |
| CN112498019B (en) * | 2020-11-24 | 2022-11-18 | 广西路桥工程集团有限公司 | Detection system and detection method for detecting vehicle load capacity by utilizing tire pressure |
| CN114104161A (en) * | 2021-12-29 | 2022-03-01 | 海固科技(苏州)有限公司 | Gravity detection system, method, device and medium |
| CN115339317A (en) * | 2022-08-26 | 2022-11-15 | 谭彬 | Truck overload alarm control engine ignition system |
| CN115402277A (en) * | 2022-09-22 | 2022-11-29 | 东风云南汽车有限公司 | Vehicle-mounted overload monitoring induction system of heavy truck |
| CN115476625B (en) * | 2022-09-27 | 2023-11-17 | 上汽通用五菱汽车股份有限公司 | Tire pressure fault alarm method, equipment and storage medium |
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| CN1614365A (en) * | 2004-11-18 | 2005-05-11 | 何崇中 | System for monitoring overloaded vehicle |
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| CN102514454A (en) * | 2011-12-12 | 2012-06-27 | 东莞市伟盈汽车科技有限公司 | Automobile tire moving monitoring method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7142102B2 (en) * | 2004-11-07 | 2006-11-28 | Lear Corporation | Weight overload warning system |
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| CN1614365A (en) * | 2004-11-18 | 2005-05-11 | 何崇中 | System for monitoring overloaded vehicle |
| CN101734114A (en) * | 2009-10-16 | 2010-06-16 | 北京工业大学 | Wireless tire pressure detector combining load calculation and speed suggestion into a whole body |
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