CN105946473B - A kind of indirect type tire pressure monitoring method and apparatus - Google Patents

A kind of indirect type tire pressure monitoring method and apparatus Download PDF

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Publication number
CN105946473B
CN105946473B CN201610294000.6A CN201610294000A CN105946473B CN 105946473 B CN105946473 B CN 105946473B CN 201610294000 A CN201610294000 A CN 201610294000A CN 105946473 B CN105946473 B CN 105946473B
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China
Prior art keywords
wheel
rotating speed
data
accumulated value
revised
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CN201610294000.6A
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Chinese (zh)
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CN105946473A (en
Inventor
张东风
王建文
林明
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郑州宇通客车股份有限公司
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Priority to CN201610294000.6A priority Critical patent/CN105946473B/en
Publication of CN105946473A publication Critical patent/CN105946473A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps, of tanks; Tyre cooling arrangements
    • B60C23/06Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
    • B60C23/061Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle by monitoring wheel speed

Abstract

The present invention relates to a kind of indirect type tire pressure monitoring method and apparatus, it is as follows that method includes step:Data collection steps:Obtain the rotary speed data of four wheels;Calculate judgment step:The wheel of maximum (top) speed is found out, with the wheel with the rotating speed of its diagonal wheel and for data one, with the rotating speed of other two wheel and for data two, if data one are more than data two, judges the wheel of the maximum (top) speed for the low wheel of tire pressure.The method of the present invention calculates simply, is more prone to realize, consuming resource is few, and speed is fast.

Description

A kind of indirect type tire pressure monitoring method and apparatus

Technical field

The present invention relates to the tire pressure monitoring field of automobile, particularly indirect type tire pressure monitoring, is specifically a kind of indirect type tire Press monitoring method and device.

Background technology

At present, tire pressure monitoring technology is divided to two kinds of direct-type and indirect type.Direct-type is pacified in inside tires or gas nozzle Pressure and temperature sensor is filled, directly tire pressure and tire temperature are measured, is alerted when tire pressure and tire temperature reach the limit values. Four wheel speeds that indirect type is mainly based upon ABS are judged, when the air pressure of some tire reduces, the car under the same conditions The rotating speed of wheel can be accelerated, thus, with reference to calculating, you can judge whether tire pressure is normal.Also have with reference to vehicle operation data, Huo Zhegen Judged according to the resonance during tire running, alerted when relevant parameter, which reaches, sets threshold value.

Indirect type tire pressure monitoring usually requires certain condition, for example, certain tire air pressure less than other tires 30% with On, and when Vehicle Speed reaches certain value can just be monitored to, and not can determine that the specific location of abnormal tire.

A kind of Chinese patent application " indirect type tire pressure monitoring based on OBD interfaces of Application No. 201510411457.6 Method " discloses a kind of indirect type tire pressure monitoring method, and after vehicle wheel rotational speed data are collected, its calculation is:To each The average value of relative deviation and the change rate of relative deviation of vehicle wheel rotational speed is calculated in group vehicle wheel rotational speed data, then will correct The average value of relative deviation afterwards and the change rate of relative deviation, if exceeding safety standard value, send and carry compared with safety standard Wake up.

Scheme above can directly judge which wheel is anomalous wheel, but sufficiently complex, the Er Qiexu of its calculating Standard value is stored to be compared.

The content of the invention

The object of the present invention is to provide a kind of indirect type tire pressure monitoring method, to solve existing indirect type tire pressure monitoring Calculate the problem of complicated.

To achieve the above object, the solution of the present invention includes:

A kind of indirect type tire pressure monitoring method, including step are as follows:

Data collection steps:Obtain the rotary speed data of four wheels;

Calculate judgment step:The wheel of maximum (top) speed is found out, with the wheel with the rotating speed of its diagonal wheel and for data one, With the rotating speed of other two wheel and for data two, if data one are more than data two, judge the wheel of the maximum (top) speed for tire pressure Low wheel.

Data correction step is further included, for eliminating influence of the tire radius difference to rotating speed under standard tire pressure.

Further include the step of being alarmed.

In data acquisition, the step of being filtered to data is further included.

It is described find out maximum (top) speed wheel during:Detect first front left wheel whether rotating speed highest, then detection is right Front vehicle wheel whether rotating speed highest, then detect rear left wheel whether rotating speed highest, finally detect right rear wheel whether rotating speed highest.

Present invention also offers a kind of indirect type device for monitoring tyre pressure, including:

Data acquisition module:Obtain the rotary speed data of four wheels;

Calculate judgment module:The wheel of maximum (top) speed is found out, with the wheel with the rotating speed of its diagonal wheel and for data one, With the rotating speed of other two wheel and for data two, if data one are more than data two, judge the wheel of the maximum (top) speed for tire pressure Low wheel.

Data correction module is further included, for eliminating influence of the tire radius difference to rotating speed under standard tire pressure.

Further include the module alarmed.

In data acquisition, the module for carrying out being filtered to data is further included.

It is described find out maximum (top) speed wheel during:Detect first front left wheel whether rotating speed highest, then detection is right Front vehicle wheel whether rotating speed highest, then detect rear left wheel whether rotating speed highest, finally detect right rear wheel whether rotating speed highest.

This method is from rate limitation, by the mechanism that adds up, is exaggerated abnormal tire pressure wheel and normal tire is delayed unloading between wheel The difference of rotating speed, can monitor when the air pressure of 1 tire is less than other tires 10% and the above, and can designate that specific position Put, while this method avoids Ackermann steer angle because to diverse location by being compared to the tachometer value on two diagonal Wrong report caused by the influence of vehicle wheel rotational speed.

The method of the present invention calculates simply, is more prone to realize, consuming resource is few, and speed is fast.And from the limit of speed System, and can designate that specific location, while this method take into account Ackermann steer angle and the rotating speed of diverse location wheel influenced, and make knot Fruit is more accurate.

Embodiment

The present invention will be further described in detail below.

Embodiment of the method

Patent of the present invention is related to a kind of new computational methods, is used in the commercial car of all installation ABS, especially ABS sheets Body is sent out the vehicle of four-wheel tach signal, and cost is low, installation is simple.

It is as follows that the method for the present embodiment includes step:

Data collection steps:Obtain the rotary speed data of four wheels;

Data correction step:Influence of the tire radius difference to rotating speed under elimination standard tire pressure.

Calculate judgment step:The wheel of maximum (top) speed is found out, with the wheel with the rotating speed of its diagonal wheel and for data one, With the rotating speed of other two wheel and for data two, if data one are more than data two, judge the wheel of the maximum (top) speed for tire pressure Low wheel.

Specifically, allowing vehicle linear running on smooth road surface first, range ability cannot be below 2km, during which with Time interval cycle of 50ms gathers the tire rotational speed of four positions, calculates adding up for each position tire rotational speed in the period Value, is set to Ni, i=1,2,3,4, wherein 1~4 corresponds to the near front wheel, off-front wheel, left rear wheel, the off hind wheel of automobile respectively.ThenkiFor the correction factor of corresponding wheel.The correction factor is right for eliminating tire radius difference under standard tire pressure The influence of rotating speed.

Then vehicle normal operation, the tire rotational speed of four positions, continuous acquisition are gathered with the gap periods of 50ms 120s, calculates the accumulated value of each position tire rotational speed in the period, is set to Pi, can obtain revised value PSi=kiPi, i =1,2,3,4, wherein 1~4 corresponds to the near front wheel, off-front wheel, left rear wheel, the off hind wheel of automobile respectively.

Finally calculated and judged:

If PS1>PS2、PS1>PS3、PS1>PS4, and PS1+PS4>PS2+PS3When, then left front tire forces down;

If PS2>PS1、PS2>PS3、PS2>PS4, and PS1+PS4<PS2+PS3When, then right front fire forces down.

If PS3>PS1、PS3>PS2、PS3>PS4, and PS1+PS4<PS2+PS3When, then left rear tire forces down;

If PS4>PS1、PS4>PS2、PS4>PS3, and PS1+PS4>PS2+PS3When, then right rear fire forces down.

Then alarm, prompt some wheel as the low wheel of tire pressure.

It is that wheel is judged successively in above example, sequentially for from the near front wheel, off-front wheel, left rear wheel of automobile, Until off hind wheel.

As other embodiment or different orders.It can also be that rotating speed is most in directly four wheels of searching Big wheel, with the rotating speed of other two wheel and is data then with the wheel with the rotating speed of its diagonal wheel and for data one Two, if data one are more than data two, judge the wheel of the maximum (top) speed for the low wheel of tire pressure.Search the algorithm of maximum value Easily realized by processor, therefore the method for the present invention calculates very simple.

In addition, in the present embodiment, processing can also be filtered first to the wheel data of collection, then be calculated again And judgement, it can so reject influence of the abnormal rotating speed to judgement in vehicle travel process.

As other embodiment, gathered data can not also be handled with correction factor and directly use collection number According to.

Device embodiment

The device for monitoring tyre pressure of the present invention, including:

Data acquisition module:Obtain the rotary speed data of four wheels;

Data correction module:Influence of the tire radius difference to rotating speed under elimination standard tire pressure.

Calculate judgment module:The wheel of maximum (top) speed is found out, with the wheel with the rotating speed of its diagonal wheel and for data one, With the rotating speed of other two wheel and for data two, if data one are more than data two, judge the wheel of the maximum (top) speed for tire pressure Low wheel.

The device for monitoring tyre pressure of the present invention, is a kind of software component, runs on corresponding controller (such as entire car controller) In.Need to provide four-wheel rotary speed data from ABS system to controller.

Embodiment of the present invention is presented above, but the present invention is not limited to described embodiment. Under the thinking that provides of the present invention, using by the way of being readily apparent that to those skilled in the art to the skill in above-described embodiment Art means are converted, replaced, changed, and play the role of with the present invention in relevant art means it is essentially identical, realize Goal of the invention it is also essentially identical, the technical solution so formed is finely adjusted above-described embodiment to be formed, this technology Scheme is still fallen within protection scope of the present invention.

Claims (8)

  1. A kind of 1. indirect type tire pressure monitoring method, it is characterised in that as follows including step:
    Data collection steps:Obtain the rotary speed data of four wheels;
    Calculate judgment step:Calculate the rotating speed accumulated value P of each position tire in set period of timei, utilize correction factor kiTo turning Fast accumulated value PiIt is modified, for eliminating influence of the tire radius difference to rotating speed under standard tire pressure, revised rotating speed tires out Value added PSi=kiPi,I=1,2,3,4, wherein 1~4 the near front wheel for corresponding to automobile respectively, off-front wheel, left back Wheel, off hind wheel;
    The wheel of the revised rotating speed accumulated value of maximum is found out, is added up with the revised rotating speed of the wheel and its diagonal wheel The sum of value is data one, with the sum of revised rotating speed accumulated value of other two wheel for data two, if data one are more than data Two, then judge the wheel of revised rotating speed accumulated value of the maximum for the low wheel of tire pressure.
  2. 2. a kind of indirect type tire pressure monitoring method according to claim 1, it is characterised in that further include the step alarmed Suddenly.
  3. A kind of 3. indirect type tire pressure monitoring method according to claim 1, it is characterised in that in data acquisition, Further include the step of be filtered to data.
  4. 4. a kind of indirect type tire pressure monitoring method according to any one of claim 1-3, it is characterised in that described to find out During the wheel of maximum revised rotating speed accumulated value:The whether revised rotating speed accumulated value of front left wheel is detected first Highest, then detects the whether revised rotating speed accumulated value highest of right front wheel, whether revised then detects rear left wheel Rotating speed accumulated value highest, finally detects the whether revised rotating speed accumulated value highest of right rear wheel.
  5. A kind of 5. indirect type device for monitoring tyre pressure, it is characterised in that including:
    Data acquisition module:Obtain the rotary speed data of four wheels;
    Calculate judgment module:Calculate the rotating speed accumulated value P of each position tire in set period of timei, utilize correction factor kiTo turning Fast accumulated value PiIt is modified, for eliminating influence of the tire radius difference to rotating speed under standard tire pressure, revised rotating speed tires out Value added PSi=kiPi,I=1,2,3,4, wherein 1~4 the near front wheel for corresponding to automobile respectively, off-front wheel, left back Wheel, off hind wheel;
    The wheel of the revised rotating speed accumulated value of maximum is found out, is added up with the revised rotating speed of the wheel and its diagonal wheel The sum of value is data one, with the sum of revised rotating speed accumulated value of other two wheel for data two, if data one are more than data Two, then judge the wheel of revised rotating speed accumulated value of the maximum for the low wheel of tire pressure.
  6. 6. a kind of indirect type device for monitoring tyre pressure according to claim 5, it is characterised in that further include the mould alarmed Block.
  7. A kind of 7. indirect type device for monitoring tyre pressure according to claim 5, it is characterised in that in data acquisition, Further include the module for carrying out being filtered to data.
  8. 8. a kind of indirect type device for monitoring tyre pressure according to any one of claim 5-7, it is characterised in that described to find out During the wheel of maximum revised rotating speed accumulated value:The whether revised rotating speed accumulated value of front left wheel is detected first Highest, then detects the whether revised rotating speed accumulated value highest of right front wheel, whether revised then detects rear left wheel Rotating speed accumulated value highest, finally detects the whether revised rotating speed accumulated value highest of right rear wheel.
CN201610294000.6A 2016-05-05 2016-05-05 A kind of indirect type tire pressure monitoring method and apparatus CN105946473B (en)

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CN201610294000.6A CN105946473B (en) 2016-05-05 2016-05-05 A kind of indirect type tire pressure monitoring method and apparatus

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Application Number Priority Date Filing Date Title
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CN105946473B true CN105946473B (en) 2018-04-20

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1712918A (en) * 2004-06-15 2005-12-28 住友橡胶工业株式会社 Velocity sensitivity correction method of reduced pressure judging value in tire pressure drop alarming device
CN101011922A (en) * 2005-12-09 2007-08-08 住友橡胶工业株式会社 Apparatus, method and program for alarming abnormality in tire air-pressure
CN101474946A (en) * 2008-01-04 2009-07-08 威伯科有限公司 Method for identifying vehicle wheels having low tire pressure
CN101716873A (en) * 2009-12-24 2010-06-02 浙江亚太机电股份有限公司 Method for monitoring tire burst or severe air leakage of vehicle
CN204432265U (en) * 2015-01-04 2015-07-01 陕西汽车集团有限责任公司 Many algorithm fusions type commercial vehicle/comm..vehicle tire pressure monitoring system and this commercial vehicle/comm..vehicle
CN204451862U (en) * 2015-02-13 2015-07-08 陕西汽车集团有限责任公司 The two remaining vehicle tyre pressure monitor and alarm systems of modularization and this commercial vehicle/comm..vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102485513B (en) * 2010-12-03 2013-11-06 联创汽车电子有限公司 Method for detecting tire leakage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1712918A (en) * 2004-06-15 2005-12-28 住友橡胶工业株式会社 Velocity sensitivity correction method of reduced pressure judging value in tire pressure drop alarming device
CN101011922A (en) * 2005-12-09 2007-08-08 住友橡胶工业株式会社 Apparatus, method and program for alarming abnormality in tire air-pressure
CN101474946A (en) * 2008-01-04 2009-07-08 威伯科有限公司 Method for identifying vehicle wheels having low tire pressure
CN101716873A (en) * 2009-12-24 2010-06-02 浙江亚太机电股份有限公司 Method for monitoring tire burst or severe air leakage of vehicle
CN204432265U (en) * 2015-01-04 2015-07-01 陕西汽车集团有限责任公司 Many algorithm fusions type commercial vehicle/comm..vehicle tire pressure monitoring system and this commercial vehicle/comm..vehicle
CN204451862U (en) * 2015-02-13 2015-07-08 陕西汽车集团有限责任公司 The two remaining vehicle tyre pressure monitor and alarm systems of modularization and this commercial vehicle/comm..vehicle

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