CN102390227A - Active braking force distribution and control system with tire pressure monitoring function - Google Patents
Active braking force distribution and control system with tire pressure monitoring function Download PDFInfo
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- CN102390227A CN102390227A CN2011102525443A CN201110252544A CN102390227A CN 102390227 A CN102390227 A CN 102390227A CN 2011102525443 A CN2011102525443 A CN 2011102525443A CN 201110252544 A CN201110252544 A CN 201110252544A CN 102390227 A CN102390227 A CN 102390227A
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Abstract
The invention discloses an active braking force distribution and control system with a tire pressure monitoring function. The system comprises a tire pressure sensor (100), a wireless receiver (200), an active braking force distribution and control system controller (500) with the tire pressure monitoring function, a braking pressure adjuster (600) and a multichannel braking pressure control module, wherein the tire pressure sensor transmits detected tire pressure to the wireless receiver; the receiver sends a tire pressure signal to the braking force distribution and control system controller; the controller analyzes pressure conditions of tires, processes different situations and controls the braking pressure adjuster through the multichannel braking pressure control module respectively to adjust the braking forces of all wheels to optimal values according to required total braking force distribution, so a vehicle can keep moving forward stably and deaccelerate slowly; meanwhile, the braking force distribution and control system controller communicates with an engine controller (800) to require to reduce an output torque, so the vehicle deaccelerates slowly or stops. The active braking force distribution and control system is applicable to various automobiles.
Description
Technical field
The present invention relates to distribute control system, belong to the automotive safety technical field with the automobile initiative brake of tire pressure monitoring.
Background technology
Whether the pressure of motor tire has normally directly influenced the life-span of oil consumption, discharging and the tire of automobile itself.The what is more important motor tire breaks service direction that gas leakage may the flip-flop automobile suddenly and causes a traffic accident, and light causes any property loss, and heavy causes casualties and road congestion.Therefore the application of system for monitoring pressure in tyre (TPMS) is popularized gradually.
But; The application of present most of TPMS is only limited to the automatic warning of pressure size; These systems can only help chaufeur to measure tire pressure; Chaufeur need not be worried about tire pressure usually and rely on TPMS to report exactly, but such system does not have the actv. protective effect to the safety of the unexpected quick-fried leakage of car tire.The TPMS that some is good has added brake control, promptly in the usual chaufeur detection wheel tire pressure that helps, when blowing out, initiatively replaces chaufeur to brake as early as possible.But emergency brake is not necessarily the optimal selection of chaufeur when blowing out, even also can cause a traffic accident.Such as on the down ramp, carrying out simple sudden stop on the bend, on ice and snow road, car is therefore out of control probably and lead to big traffic accident.Even on common level road; Like the back sudden stop under the situation such as car follows closely is arranged; May make many cars be involved in traffic accident; This trouble that possibly cause than blowing out merely is also much bigger, because the emergency case that some skillful driving persons can fast processing be blown out well in operational process, and the system of band TPMS carries out sudden stop automatically and makes chaufeur lose to control the ability of car.Even brake slowly because wheel pressure is inconsistent, can produce thereby theoretical running radius of tire is inconsistent that braking force is inconsistent possibly to be caused to lose control of one's vehicle.
The present invention adopts the signal of TPMS that brake system is carried out the inferior control of higher level rather than brakes simply and avoid causing bigger traffic accident.
Summary of the invention
The objective of the invention is to prevent in operational process, blow out suddenly under the situation out of control or emergency brake of car and causing a traffic accident of car.
Technical scheme of the present invention is; The present invention detects tyre inner pressure through direct or indirect mode; And the tire pressure size is passed to receiver through wireless or electromagnetic induction; Receiver is passed to brakig force distribution control system controller with the pressure condition of tire, and brakig force distribution control system controller is analyzed the pressure condition of each tire, distinguishes different situations and handles; To there being improper pressure tires to take the necessary security countrmeasure, prevent that contingency from appearring in vehicle under steam.
The initiative brake of band tire pressure monitoring of the present invention distributes control system to comprise that the initiative brake of tire pressure sensor, wireless interface receiver, band tire pressure monitoring distributes control system controller, brake pressure regulating control, multichannel tire pressure signal translation module, multichannel brake pressure control module etc.The initiative brake of band tire pressure monitoring distributes the control system controller to have the control chip of control program to constitute by an establishment, or is controlled by engine controller (ECU) extended function.Multichannel tire pressure signal translation module, multichannel brake pressure control module are provided with in the engine controller (ECU); Tire pressure sensor places in each tire; The wireless interface receiver places the initiative brake of said band tire pressure monitoring to distribute in the control system controller.
The initiative brake of band tire pressure monitoring of the present invention divides distribution controlling method to do; Tire pressure sensor reaches the wireless interface receiver with detected tire pressure; The wireless interface receiver send the initiative brake of band tire pressure monitoring to distribute the control system controller tire pressure signal; By said controller the pressure condition of each tire is analyzed, distinguished different situations and handle, as belong to under-voltage or overvoltage is then corrected through telltale or voice device driver; Blow out like genus, initiative brake distributes the control system controller then to light urgent taillight, and distributes by required total braking force through multichannel brake pressure control module; The brake pressure regulating control of controlling brake system on the car respectively with the brake-power regulation of all wheels to optimum value; Make vehicle continue to advance by the direction that chaufeur guides, while and engine controller (ECU) carry out communication, require to reduce output torque; Make vehicle slowly be decelerated to parking, so that repair.
The brake pressure regulating control of brake system on the said control car adopts hydraulic pressure regulator or barometric regulator according to the propulsion source decision of car itself.The brake pressure regulating control adopts PWM dutycycle or linear valve to realize pressure control, with the brake-power regulation of all wheels to optimum value.
Fig. 1 is the initiative brake distribution control system constructional drawing with direct tyre pressure sensor monitoring, and Fig. 2 is that the initiative brake of band tire pressure monitoring distributes the control block diagram of control system.
The present invention adopts direct-type pressure sensor 100 to check the pressure of each tire, and the pressure size of tire is communicated to wireless interface receiver 200 through the wireless launcher of sensor band itself.Whether normal or under-voltage receiver 200 is handled the signal of receiving, confirm or the overvoltage of each tire or blow out.The way that the present invention also can adopt the indirect type tire pressure to survey is calculated the pressure of tire.No matter use which kind of method detecting tire pressure; The initiative brake of band tire pressure monitoring distributes the control system controller to analyze each tire pressure that detects, as is under-voltage or overvoltage is then corrected through telltale 300 or voice device 400 drivers; As quite serious, then restricted speed is in case cause bigger problem; If blow out; Initiative brake distributes 500 of control system controllers to light urgent taillight; And the pressure regulator 600 of controlling brake system on the car respectively with the brake-power regulation of all wheels to optimum value, promptly automatically the braking force on each wheel is carried out reasonable distribution and makes car continue to advance by the direction that chaufeur guides, simultaneously and engine controller (ECU) 800 carry out communication; Require to reduce output torque, car is slowly slowed down or parking.
The braking force sum of each wheel equals the braking force of car load:
F?=?F
fl?+?F
fr?+?F
rl?+?F
rr
The size of car load total braking force is decided by the speed of a motor vehicle and car weight.The main purpose of braking is not to let car stop as early as possible but let car stablize to advance stop slowly in order to avoid traffic accident.Controller arrives each wheel with the total braking force reasonable distribution.The size of the braking force of each wheel is distributed difference and the pressure P of each tire own that depends mainly on car working direction α and pilot control direction β
XxSize:
F
xx?=?k
xx1*（α-β）+?k
xx2*P
xx
K wherein
Xx1And k
Xx2In be respectively the relative coefficient of 4 wheels, the size of coefficient depends on the position of damaging wheel rather than fixing.This with traditional brake system according to car front and back wheel dynamic load is different distribute before and after the braking force size to satisfy the EBD system of the shortest braking distance different.
Be simplified system, receiver 200 is placed in initiative brake usually and distributes within the control system controller 500.
The beneficial effect of the present invention and prior art comparison is; System of the present invention adopts direct-type or indirect type tire pressure monitoring; Except that tyre underpressure or overpressure situation are warned; And initiatively take safety measures and prevent because certain tire pressure mal and the destruction of bringing to tire and avoid increasing oil consumption and discharging; The brake pressure that what is more important the present invention carries out initiatively braking to vehicle and controls all tire according to the position difference of decreases tire respectively to be to guarantee the vehicle stabilization operation, slowly to slow down and avoided chaufeur because in alarm and the method for sudden stop or some tire pressure monitoring system employing sudden stop is brought to lose control of one's vehicle, like whipping, danger such as rotate, topple.Because under many conditions; Such as on the down ramp, on the bend, on the road surface of low adhesive ability such as ice and snow, sudden stop is breakneck, even brake slowly; Because wheel pressure is inconsistent, theoretical running radius of tire is inconsistent and can to produce braking force inconsistent and then cause to lose control of one's vehicle.The present invention carries out reasonable distribution through the braking force to each wheel and automatic guidance can address this problem preferably.
The present invention is applicable to all kinds of automobiles.
Description of drawings
Fig. 1 is that the initiative brake of the monitoring of the direct tyre pressure sensor of hydraulic power source band distributes the control system constructional drawing, pneumatic supply similar;
Fig. 2 is that the initiative brake of band tire pressure monitoring distributes the control block diagram of control system;
Among the figure: the 100th, be contained in the pressure sensor of the band feedway on the tire; The 200th, the pressure wireless receiver of tire; The 300th, telltale; The 400th, voice device; The 500th, the initiative brake of band tire pressure monitoring distributes the control system controller; 510 is multichannel tire pressure signal translation module; The 520th, multichannel brake pressure control module; The 600th, the brake pressure regulating control; The 700th, the brake fluid cylinder pressure; The 800th, engine controller.
The specific embodiment
Embodiment 1:
Present embodiment is that the initiative brake of direct measure tire pressure distributes the control system embodiment.
The present embodiment implementation step is:
The first step is the air pressure that accurately detects in all tire, and present embodiment adopts direct method of measurement drawings tire pressure, and the precision of tire pressure sensor can reach 0.01 crust.Use the pressure sensor 100 of band feedway to give receptor 200 with the pressure of each tire through radio transmission, receptor is all transferred to initiative brake with tire pressure and is distributed control system controller 500 to handle;
Second step was that initiative brake distributes 500 pairs of force value that detect of control system controller to analyze, and compared according to the normal pressure value that gives in advance, confirmed whether the pressure of each tire is normal;
The 3rd step was that initiative brake distributes 500 pairs of control system controllers to have the mal pressure tires to take the necessary security measure.Different pressures mal problem must adopt the different security measure.Safety measure is not limited to visual alert, aural alert, driving engine reduction output torque, car deceleration, also comprises the brake-pressure of ACTIVE CONTROL of vehicle own and adjusting all tire etc.
As belong to tyre underpressure or overvoltage and then correct through telltale 300 or voice device 400 drivers;
When blowing out like genus, though chaufeur still unreacted come and not brake in time, the present invention initiatively controls brake immediately; This control brake is not that all tire is adopted same brake control power or emergency brake suddenly, but the brake pressure of all wheels is carried out the active automatic guidance, guarantees to make car still among the control of chaufeur to the car service direction.In order to prevent the car whipping, cross car situation out of control such as turn, owe to turn, topple and take place that the braking force on each wheel must carry out micro-manipulation, preferably carries out pressure and speed closed loop and controls.The tire location that goes wrong is different, and the braking force of each tire is also otherwise with to guarantee the stable of vehicle body.Even chaufeur is because alarmed and sudden stop, control system is still controlled the brake-pressure of all tire and is made the vehicle stabilization operation.
The different pressures of brake is to carry out through the pressure regulator of controlling brake system.The medium of pressing force transmission divides, and pressure regulator has two kinds of hydraulic pressure and air pressure, and this is decided by the pressure source that car itself has, and the hydraulic pressure regulator of using of hydraulic power source is arranged, and the barometric regulator of using of source of the gas is arranged; Mode by valve is divided, and open-close type valve and linear valve two macrospecies are arranged in the pressure regulator, and open-close type valve adopts the duty of regulating PWM recently to realize, but reaction is slower; The linear valve reaction is very fast, and control accuracy is higher, thereby effect is better.For using the hydraulic power source system, 700 is hydraulic actuating cylinders among Fig. 1, if the pneumatic supply system, 700 is air cylinders among Fig. 1 then.
Embodiment 2:
Present embodiment is that the initiative brake of indirect measure tire pressure distributes the control system embodiment.
The first step is that present embodiment adopts indirect method of measurement drawings tire pressure; In the indirect method of measurement; Estimate the pressure in the tire through drawings rotating speed, chassis apart from ground-surface height or tyre temperature etc., initiative brake distributes control system controller 500 to handle according to the estimated value of tyre inner pressure;
Second step was that initiative brake distributes 500 pairs of force value that detect of control system controller to analyze, and compared according to the normal pressure value that gives in advance, confirmed whether the pressure of each tire is normal;
The 3rd step was that initiative brake distributes 500 pairs of control system controllers to have the mal pressure tires to take the necessary security measure.Different pressures mal problem must adopt the different security measure.Safety measure is not limited to visual alert, aural alert, driving engine reduction output torque, car deceleration, also comprises the brake-pressure of the ACTIVE CONTROL brake of vehicle own, control and adjusting all tire etc.
As belong to tyre underpressure or overvoltage and then correct through telltale 300 or voice device 400 drivers;
When blowing out like genus; Chaufeur might not in time brake; The present invention then can initiatively control brake; This control brake is not that all tire is adopted same brake control power or emergency brake suddenly, but the brake pressure of all wheels is carried out the active automatic guidance, guarantees to make car still among the control of chaufeur to the car service direction.In order to prevent the car whipping, cross car situation out of control such as turn, owe to turn, topple and take place that the brake pressure on each wheel must carry out micro-manipulation, preferably carries out pressure and speed closed loop and controls.The tire location that goes wrong is different, and the brake pressure of each tire is also otherwise with to guarantee the stable of vehicle body.Even chaufeur is because alarmed and sudden stop, control system is still controlled the brake-pressure of all tire and is made the vehicle stabilization operation.
Claims (6)
1. the initiative brake with tire pressure monitoring distributes control system; Said system comprises tire pressure sensor, wireless interface receiver and brake pressure regulating control; It is characterized in that the initiative brake that said system is provided with the band tire pressure monitoring distributes control system controller, multichannel tire pressure signal translation module and multichannel brake pressure control module; The initiative brake of band tire pressure monitoring distributes the control system controller to have the control chip of control program to constitute by an establishment, or is born by engine controller (ECU) extended function; Multichannel tire pressure signal translation module, multichannel brake pressure control module are provided with in the engine controller (ECU); Tire pressure sensor reaches the wireless interface receiver with detected tire pressure in the said system; The wireless interface receiver send the initiative brake of band tire pressure monitoring to distribute the control system controller tire pressure signal; By said controller the pressure condition of each tire is analyzed, is handled, and distribute by required total braking force through multichannel brake pressure control module, the brake pressure regulating control of controlling brake system on the car respectively with the brake-power regulation of all wheels to optimum value; Vehicle is moved on; While and engine controller (ECU) carry out communication, require to reduce output torque, and vehicle is slowly slowed down or parking.
2. a kind of initiative brake with tire pressure monitoring according to claim 1 distributes control system, it is characterized in that said tire pressure sensor places in each tire; The wireless interface receiver places the initiative brake of said band tire pressure monitoring to distribute in the control system controller.
3. a kind of initiative brake with tire pressure monitoring according to claim 1 distributes control system, it is characterized in that the brake pressure regulating control of brake system on the said control car adopts hydraulic pressure regulator or barometric regulator according to the propulsion source decision of car itself.
4. the initiative brake with tire pressure monitoring divides distribution controlling method; It is characterized in that said control method is that said tire pressure sensor reaches the wireless interface receiver with detected tire pressure; The wireless interface receiver send the initiative brake of band tire pressure monitoring to distribute the control system controller tire pressure signal; By said controller the pressure condition of each tire is analyzed, distinguished different situations and handle, as belong to under-voltage or overvoltage is then corrected through telltale or voice device driver; Blow out like genus; Initiative brake distributes the control system controller then to light urgent taillight, and distributes by required total braking force through multichannel brake pressure control module, the brake pressure regulating control of controlling brake system on the car respectively with the brake-power regulation of all wheels to optimum value; Vehicle is moved on; While and engine controller (ECU) carry out communication, require to reduce output torque, and vehicle is slowly slowed down or parking.
5. the initiative brake of band tire pressure monitoring according to claim 4 divides distribution controlling method; It is characterized in that; Said detection tyre inner pressure can directly detect through tire pressure sensor; Also can detect acquisition through indirect mode, said indirect mode comprises through detecting tire rotational speed, chassis apart from ground-surface height or tyre temperature estimation tire pressure.
6. the initiative brake of band tire pressure monitoring according to claim 4 divides distribution controlling method, it is characterized in that, said brake pressure regulating control adopts PWM dutycycle or linear valve to realize pressure control, with the brake-power regulation of all wheels to optimum value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102525443A CN102390227A (en) | 2011-08-30 | 2011-08-30 | Active braking force distribution and control system with tire pressure monitoring function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102525443A CN102390227A (en) | 2011-08-30 | 2011-08-30 | Active braking force distribution and control system with tire pressure monitoring function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507792A (en) * | 2013-10-23 | 2014-01-15 | 陕西科技大学 | Emergency braking device capable of automatically changing motor vehicle tire pressure and method thereof |
| CN103569087A (en) * | 2012-07-25 | 2014-02-12 | 北汽福田汽车股份有限公司 | Vehicle tire blow-out protection system and method and vehicle |
| CN103587516A (en) * | 2013-11-19 | 2014-02-19 | 浙江吉利汽车研究院有限公司 | Vehicle tire burst classifying brake control device and control method |
| CN104924906A (en) * | 2015-06-24 | 2015-09-23 | 蒋晓凡 | Tire pressure testing device capable of controlling vehicle speed |
| CN105082899A (en) * | 2015-08-06 | 2015-11-25 | 北汽福田汽车股份有限公司 | Vehicle tire burst emergency device, vehicle including same and vehicle control method |
| CN106004833A (en) * | 2016-05-31 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft antiskid braking control system |
| CN106926842A (en) * | 2015-12-31 | 2017-07-07 | 罗伯特·博世有限公司 | Vehicle assistant drive method and vehicle DAS (Driver Assistant System) |
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| CN1847819A (en) * | 2001-02-26 | 2006-10-18 | 丰田自动车株式会社 | Apparatus for estimating a tire condition and apparatus for determining a tire abnormal condition |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103569087A (en) * | 2012-07-25 | 2014-02-12 | 北汽福田汽车股份有限公司 | Vehicle tire blow-out protection system and method and vehicle |
| CN103507792A (en) * | 2013-10-23 | 2014-01-15 | 陕西科技大学 | Emergency braking device capable of automatically changing motor vehicle tire pressure and method thereof |
| CN103587516A (en) * | 2013-11-19 | 2014-02-19 | 浙江吉利汽车研究院有限公司 | Vehicle tire burst classifying brake control device and control method |
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| US10053069B2 (en) | 2013-11-19 | 2018-08-21 | Zhejiang Geely Automobile Research Institute Co., Ltd | Graded braking control device and control method for vehicle tire burst |
| CN104924906A (en) * | 2015-06-24 | 2015-09-23 | 蒋晓凡 | Tire pressure testing device capable of controlling vehicle speed |
| CN105082899A (en) * | 2015-08-06 | 2015-11-25 | 北汽福田汽车股份有限公司 | Vehicle tire burst emergency device, vehicle including same and vehicle control method |
| CN106926842A (en) * | 2015-12-31 | 2017-07-07 | 罗伯特·博世有限公司 | Vehicle assistant drive method and vehicle DAS (Driver Assistant System) |
| CN106004833A (en) * | 2016-05-31 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Aircraft antiskid braking control system |
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Application publication date: 20120328 |