CN101311693A - Enhancement type tire pressure monitoring system and control method - Google Patents
Enhancement type tire pressure monitoring system and control method Download PDFInfo
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- CN101311693A CN101311693A CNA2007100349987A CN200710034998A CN101311693A CN 101311693 A CN101311693 A CN 101311693A CN A2007100349987 A CNA2007100349987 A CN A2007100349987A CN 200710034998 A CN200710034998 A CN 200710034998A CN 101311693 A CN101311693 A CN 101311693A
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Abstract
The invention relates to an enhancement type tire pressure monitoring system and consists of three parts of a main control system, a braking servo mechanism of an original mechanism, and a plurality of wireless monitoring modules which are arranged at the wheels; wherein, the wireless monitoring module is enhanced to be an RF trans-receiving circuit by adding a tire burst sensor and an RF transmitting circuit on the basis of a TPMS sub-system; the main control system which is arranged at a vehicle body and has the function of wireless communication adds a vehicle speed input interface circuit, a power management circuit, a braking control output interface on the basis of a TPMS central monitor and an RF receiving circuit is enhanced to be the RF trans-receiving circuit; the communication connection is formed between the wireless monitoring module and the main control system in a wireless mode; the main control system performs monitoring, gives early warning of the tire pressure when needed or makes braking control over the braking servo mechanism of the original vehicle.
Description
Technical field
The present invention relates to safety monitoring and the control of vehicle, particularly utilize the technical scheme of the enhancement type tire pressure monitoring system (E-TPMS) of TPMS (tire pressure monitoring system), the existing braking servo device formation of former car with the Puffer-type tire.
Background technology
Realize that zero injury of tyre break accident is the long-cherished wish that people dream of.Can be used in the air pressure detection technique of tyre in motion existing, adopt the TPMS (see figure 7) of wireless communication mode to form by a plurality of TPMS far module (a) and TPMS central monitors (b) that are installed on tire, for weighing the contradiction that its far module (a) weight and battery are held time, have to sacrifice the real-time of TPMS, TPMS far module (a) is set in every dormancy 3s even air pressure of longer time back detection, keeps the TPMS needs of working time several years to guarantee battery.And the occupant 2s～3s that wishes just to place on after the tyre break that survives can take safe deceleration measure timely and effectively in the time, therefore, the function of TPMS can only be positioned the tire pressure early warning, rather than tyre break monitoring, more can not be used for the active relief after the tyre break.
Chinese patent application number 200510078211.8 disclosed " tyre pressure monitoring system functional improves and enlargement technology " are known perfectly well and must be taked brake measure in the time at the back 2s～3s that blows out, but the TPMS far module is not being done under the situation of any substantial improvement aspect keeping at real-time and the energy, just with the TPMS system as the monitoring of tyre break and initiatively relief; If this technical scheme is placed in the hope that the tyre break back occupant is survived, this is very dangerous thing beyond doubt, this technical scheme is used for the tyre break monitoring and braking control as the safe rescuing product, itself has so big technology leak, does not have practicality at all and can say.
If with former design battery is that the air pressure sense cycle of the TPMS subsystem in 3 years shortens to every 100ms by 3s and detects once serviceable life, the maximum monitoring nearly 100ms of blind area time of tyre break, TPMS subsystem energy consumption then is original 30 times, battery hold time with hold time well below former design 1/30, according to the discharge rate of battery characteristic as can be known, battery life will be seriously shortened in undue discharge.Obviously, no matter existing TPMS is real-time, or mission life all can not satisfy blow out detect the reliability requirement that should possess.
Summary of the invention
The object of the invention technology is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of real-time, do not have the monitoring blind area time, possess continuous monitoring tyre break ability, in conjunction with the enhancement type tire pressure monitoring system of the existing braking servo device of former car; This system can not only provide the monitoring of tire pressure and temperature, the more important thing is first moment after blowing out accurately to obtain signal of tyre burst, controls output interface automatically the vehicle of blowing out is braked control safely and effectively.
The present invention is achieved in that enhancement type tire pressure monitoring system, it is characterized in that: by a plurality of wireless monitor modules that are installed on wheel, be installed on that car body possesses the master control system of wireless communication function and existing braking servo device three parts of former car are formed; The wireless monitor module is made of the TPMS far module and the sensor of blowing out, and is used for the isoparametric detection of tyre break monitoring, tire pressure and temperature, and in the RF mode signal that obtains is sent to master control system; Master control system is made of TPMS central monitor, speed of a motor vehicle input interface circuit, power circuit and braking control output interface circuit; Transmit information in the RF mode between wireless monitor module and the master control system, master control system is implemented tire air pressure monitoring, early warning according to relevant informations such as tyre break signal, tire parameter, car speeds or by control interface the existing braking servo device of former car is implemented braking and control.
In the existing braking servo device of former car, vacuum booster braking servo device, pneumatic braking servo control mechanism, the hydraulic booster braking servo device that can change gas circuit or liquid road realization electric control braking by solenoid valve are arranged; The brake-by-wire device that can accept artificial pedal brake simulating signal is arranged and can send Electronic Control braking servo devices such as the abs braking device of braking instruction control brake and ESC detent by data bus.
Master control system then can be according to different controlling object, and the switching mode that correct selection connects with it, analogue type or bus-type braking control output interface are realized the braking control to the existing braking servo device of former car.
The control method of enhancement type tire pressure monitoring system, it is characterized in that: when tire pressure is higher than the sensor definition air pressure of blowing out, the sensor no signal of blowing out output, the wireless monitor module works in general T PMS pattern, after every dormancy 3s or longer time, tire is carried out the detection of correlation parameters such as air pressure, temperature, the dormancy after finishing the correlation parameter collection and sending correlation parameter of the single-chip microcomputer of wireless monitor module in the RF mode; Master control system is implemented monitoring according to the parameter that receives to each tire, shows and audio communication circuit transmission correlation parameter or warning by information; Work as tyre break, tire pressure is when blowing out sensor definition air pressure, the sensor of blowing out output signal of tyre burst, the single-chip microcomputer of wireless monitor module is waken up to work in by signal of tyre burst immediately and strengthens the TPMS pattern, and signal of tyre burst and tire pressure and temperature parameter are sent to master control system in the RF mode; When vehicle ' below the safety speed of a motor vehicle, master control system is not taked brake measure, only show and the audio communication circuit alarm by information, when vehicle ' more than the safety speed of a motor vehicle, master control system is then immediately by braking control output interface, the car brakeing servo control mechanism is braked control, the speed of a motor vehicle is reduced to below the safe speed of a motor vehicle, and show and the audio communication circuit alarm by information.
The present invention makes full use of prior art, and the wireless monitor module adopts sensor IC, power supply mode and the dormant and awakening mode of operation of existing general T PMS.Power supply mode comprises: powered battery, LF inductive power supply, the piezoelectric generating device that utilizes wheel to travel to produce electromagnetic power generation apparatus that vibration obtains energy and mechanical energy to transform electric energy; The dormant and awakening mode comprises: Weight type motion sensor, piezoelectric vibration sensors, LF signal, timer and utilize acceleration transducer in the TPMS sensor IC.
Be accuracy and the reliability that improves the dangerous information transmission of tyre break, it is two-way RF transmission circuit that wireless monitor module and master control system RF circuit strengthen; The wireless monitor module works in when strengthening the TPMS pattern, and the RF transmission circuit changes the bidirectional transmit-receive pattern into by unidirectional sending mode, repeats to send the relevant information that comprises the sign of blowing out, and stops to repeat sending when receiving the master control system answer signal; When master control system was blown out the relevant information of sign in comprising of receiving, the RF transmission circuit changed the bidirectional transmit-receive pattern into by unidirectional receiving mode, sends answer signal to the wireless monitor module.
The remarkable beneficial effect that the present invention brings is: enhancement type tire pressure monitoring system, can the air pressure and the temperature of vehicle tyre be detected under the normal condition, allow human pilot in time understand state of the art in the tire motion, make vehicle tyre be operated in a more normal scope, help reducing fuel consume and tire wear; The more important thing is when explosion appears in tire, this system can be in the moment that human pilot has little time to react, automatically take the safety braking measure timely and accurately, the vehicle of blowing out is effectively succoured, play a positive role for ensureing the traffic safety relevant with tire.
Description of drawings
Fig. 1 enhancement type tire pressure monitoring system exemplary block diagram of the present invention;
Fig. 2 wireless monitor module electricity theory diagram;
Fig. 3 master control system theory diagram;
Fig. 4 realizes brake servo control principle figure by control electromagnetic valve;
Fig. 5 brakes the control output interface and the deceleration of electrons servo control mechanism connects figure;
Fig. 6 one-to-two antenna RF power divider schematic diagram;
Fig. 7 TPMS system chart.
Embodiment
The development that modern semiconductor technology is integrated makes a plurality of functions can be included in the integrated circuit, in design of the invention process, correctly selects integrated circuit can reach the effect of simplifying circuit, reducing volume and weight.
Below in conjunction with Fig. 1, Fig. 2, Fig. 3, and Fig. 4, Fig. 5 are described in detail embodiment 1.
As shown in Figure 1, enhancement type tire pressure monitoring system is made up of a plurality of existing braking servo devices of the wireless monitor module (A) of wheel, the master control system (B) that is installed on car body and vehicle that are installed on.
As shown in Figure 2, wireless monitor module (A) is made up of blow out sensor (1), 3.6V lithium battery B1 of integrated circuit SP12 that has comprised baroceptor, temperature sensor, acceleration transducer and tension measuring circuit and the single-chip microcomputer nRF9E5, antenna, the pressure switch type that possess the RF transmission-receiving function; Wherein, the acceleration transducer among the SP12 is used to realize the function of wake-up circuit.
As shown in Figure 3, master control system (B) has comprised, single-chip microcomputer MC68HC908GT8, RF transceiver IC nRF905, antenna system, information shows and audio communication circuit (2), electric power management circuit (3), braking control output interface (4), speed of a motor vehicle change-over circuit (5); Information shows and audio communication circuit (2) has comprised liquid crystal display Homeway.com sound circuit; Speed of a motor vehicle change-over circuit (5) is connected with the vehicle speed signal circuit of vehicle; Braking control output interface (4) is chosen corresponding control mode according to the braking servo device that connects with it.
Master control system (B) selects for use switching mode braking control output interface (40) by control electromagnetic valve (6), can realize the control to following braking servo device:
A, vacuum-assisted brake servo control mechanism;
B, hydraulic assisting brake servo control mechanism;
C, pneumatic braking servo control mechanism.
Master control system (B) can send brake pedal simulating signal M to the ECU (10) of brake-by-wire by analogue type braking control output interface (41), and (Fig. 5 a) to implement braking by ECU (11).
Master control system (B) can send braking instruction (Fig. 5 b) to the ECU (11) of ABS that possesses deceleration of electrons control or ESC detent by bus-type braking control output interface (42), implements braking by ECU (11).
In order clearly embodiment 1 to be described in detail, the contributing embodiment of deciding 1 selects for use switching mode braking output interface (40) to connect by control electromagnetic valve (6) and improved vacuum brake (7) servo control mechanism (separate case is applied for a patent).
As shown in Figure 2, when vehicle is under the non-transport condition, wireless monitor module (A) is in dormant state; When vehicle was in transport condition, nRF9E5 obtained signal from the acceleration transducer of sP12 and enters duty; When tire pressure is higher than the sensor definition air pressure of blowing out, the sensor no signal of blowing out output, wireless monitor module (A) works in general T PMS pattern, after every dormancy 3s or longer time, tire is carried out a correlation parameter detect; Single-chip microcomputer nRF9E5 obtains correlation parameter collections such as air pressure, temperature, acceleration, voltage finishing from SP12, by the RF transmission circuit parameter is sent to dormancy after the master control system; Master control system (B) single-chip microcomputer MC68HC908GT8 receives the correlation parameter of each tire by RF transmission circuit nRF905, MC68HC908GT8 show by information and audio communication circuit (3) in liquid crystal display TG12864 show relevant information; When tire parameter is unusual, master control system (B) single-chip microcomputer MC68HC908GT8 shows relevant information by the liquid crystal display TG12864 in information demonstration and the audio communication circuit (3), ringing circuit WTV040-20S by news simultaneously reports to the police, braking control output interface this moment (40) is no-output still, and human pilot can apply damping force P to vacuum-assisted brake mechanism and carry out the normal brake application operation; Work as tyre break, tire pressure is when blowing out sensor definition air pressure, the sensor of blowing out output signal of tyre burst, wireless monitor module (A) is waken up to work in by signal of tyre burst immediately and is strengthened TMPS (E-TMPS) pattern, the RF circuit changes the bidirectional transmit-receive pattern into from the unidirectional emission pattern, to blow out sign and detect correlation parameter and repeat to send to master control system (B) of single-chip microcomputer nRF9E5 is till the answer signal that receives master control system (B); Master control system (B) single-chip microcomputer MC68HC908GT8 be subjected to containing blow out the sign information after send answer signal, and immediately according to this moment the speed of a motor vehicle judge whether to take brake measure; When vehicle ' below safe speed, master control system (B) single-chip microcomputer MC68HC908GT8 show by information and audio communication circuit (3) in the TG12864 liquid crystal display show, ring circuit alarm by news simultaneously; Braking control output interface this moment (40) is no-output still, and human pilot can carry out the normal brake application operation; When vehicle ' more than safe speed, master control system (B) single-chip microcomputer MC68HC908GT8 then drives solenoid valve (6) by switching mode braking control output interface (40); Solenoid valve this moment (6) cuts out the vacuum passage of vacuum source V to operating cavity (7b), opens the passage of atmosphere N to operating cavity (7b), and atmosphere N enters operating cavity (7b), makes vacuum booster diaphragm both sides produce draught head; The vacuum booster diaphragm produces damping force to vacuum chamber (7a) displacement under atmosphere N pressure promotes; Meanwhile, master control system (B) single-chip microcomputer MC68HC908GT8 shows by the TG12864 liquid crystal display in information demonstration and the audio communication circuit (3), rings circuit alarm by news simultaneously; When vehicle stopped to travel, the nRF9E5 single-chip microcomputer judged that from the accekeration of SP12 vehicle has been in non-transport condition, and wireless monitor module (A) reenters dormant state.
When adopting other braking servo device, select suitable braking output interface, the docked mode with reference to Fig. 4, Fig. 5 realizes braking respectively.Shown in Fig. 4 b, the normal open walk of solenoid valve (6) is connected in the braking releasing row pressure passage of hydraulic assisting brake device (8) and the low pressure end L of hydraulic power source, and row pressure passage and hydraulic power source high-pressure side H are removed in the braking that is connected to hydraulic assisting brake device (8) in the normally closed passage; When master control system (A) is controlled output interface (40) drive current by the switching mode braking, the normal open walk of solenoid valve (6) is closed, normally closed passage is opened, the normally closed passage that hydraulic power source high-pressure side H is opened by solenoid valve (6), remove the row pressure passage to hydraulic booster chamber (8a) injection pressure through the braking of hydraulic assisting brake device (8), the boosting piston of hydraulic assisting brake device (8) promotes master cylinder and implements braking to brake cylinder Sp output pressure.
Shown in Fig. 4 c, the normally closed passage of the solenoid valve (6) of pneumatic braking servo control mechanism (separate case is applied for a patent) is connected in compressed air source H and master cylinder (9) braking is removed between the exhaust passage, the normal open walk of solenoid valve (6) is connected in master cylinder (9) braking and removes between exhaust passage warp and the atmosphere N, makes brake cylinder Sp communicate with atmosphere; When master control system is controlled output interface (40) drive current by the switching mode braking, the normal open walk of solenoid valve (6) is closed, normally closed passage is opened, the normally closed passage that compressed air source high-pressure side H is opened by solenoid valve (6) is removed the row pressure passage through the braking of master cylinder (9) and is implemented braking to the passage injection braking pressure of braking output.
For further strengthening the effect of wireless telecommunications of the present invention, can near tire, place many antennas of antenna, master control system (B) adopts the RF power divider to carry out many antennas connections.As shown in Figure 6 be the RF power divider electrical schematic diagram of one-to-two, wherein: C1, C2, L1, L2 and R1 form power distributing network, the RF interface of master control system (B) is connected with the M0 end by cable, S1 can be connected an antenna respectively with S2, also the M0 end that descends the one-to-two RF power divider of one deck can be connected to S1 or S2 end, to satisfy the needs that connect more antenna.Long vehicle body vehicle raising data transfer reliability and communication effect are improved obviously.
Claims (9)
1, enhancement type tire pressure monitoring system is characterized in that: by a plurality of wireless monitor modules that are installed on wheel, be installed on that car body possesses the master control system of wireless communication function and existing braking servo device three parts of former car are formed; The wireless monitor module is made of the TPMS far module and the sensor of blowing out, and is used for the isoparametric detection of tyre break monitoring, tire pressure and temperature, and in the RF mode signal that obtains is sent to master control system; Master control system is made of TPMS central monitor, speed of a motor vehicle input interface circuit, electric power management circuit and braking control output interface; Transmit information in the RF mode between wireless monitor module and the master control system, master control system is implemented tire air pressure monitoring, early warning according to relevant informations such as tyre break signal, tire parameter, car speeds or by control interface the existing braking servo device of former car is implemented braking and control.
2, the control method of enhancement type tire pressure monitoring system, it is characterized in that: when tire pressure is higher than the sensor definition air pressure of blowing out, the sensor no signal of blowing out output, the wireless monitor module works in general T PMS pattern, after every dormancy 3s or longer time, tire is carried out the detection of correlation parameters such as air pressure, temperature, the dormancy after finishing the correlation parameter collection and sending correlation parameter of the single-chip microcomputer of wireless monitor module in the RF mode; Master control system is implemented monitoring according to the parameter that receives to each tire, shows and audio communication circuit transmission correlation parameter or warning by information; Work as tyre break, tire pressure is when blowing out sensor definition air pressure, the sensor of blowing out output signal of tyre burst, the single-chip microcomputer of wireless monitor module is waken up to work in by signal of tyre burst immediately and strengthens the TPMS pattern, and signal of tyre burst and tire pressure and temperature parameter are sent to master control system in the RF mode; When vehicle ' below the safety speed of a motor vehicle, master control system is not taked brake measure, only show and the audio communication circuit alarm by information, when vehicle ' more than the safety speed of a motor vehicle, master control system is then immediately by braking control output interface, the car brakeing servo control mechanism is braked control, the speed of a motor vehicle is reduced to below the safe speed of a motor vehicle, and show and the audio communication circuit alarm by information.
3, enhancement type tire pressure monitoring system according to claim 1 is characterized in that: the wireless monitor module adopts sensor IC, power supply mode and the dormant and awakening mode of operation of existing general T PMS.
4, enhancement type tire pressure monitoring system according to claim 1 is characterized in that: it is two-way RF transmission circuit that wireless monitor module and master control system strengthen.
5, the control method of enhancement type tire pressure monitoring system according to claim 2, it is characterized in that: the wireless monitor module works in when strengthening the TPMS pattern, the RF transmission circuit changes the bidirectional transmit-receive pattern into by unidirectional sending mode, repeat to send the relevant information that comprises the sign of blowing out, when receiving the master control system answer signal, stop to repeat sending; When master control system was blown out the relevant information of sign in comprising of receiving, the RF transmission circuit changed the bidirectional transmit-receive pattern into by unidirectional receiving mode, sends answer signal to the wireless monitor module.
6, according to claim 1,3,4 described enhancement type tire pressure monitoring systems, it is characterized in that: the braking of master control system control output interface is realized control to following braking servo device by control electromagnetic valve:
A, vacuum-assisted brake servo control mechanism;
B, hydraulic assisting brake servo control mechanism;
C, pneumatic braking servo control mechanism.
7, according to claim 1,3,4 described enhancement type tire pressure monitoring systems, it is characterized in that: master control system sends brake pedal simulating brake signal by analogue type braking control output interface to the ECU of brake-by-wire, implements braking by ECU.
8, according to claim 1,3,4 described enhancement type tire pressure monitoring systems, it is characterized in that: master control system sends braking instruction by bus-type braking control output interface to the ECU that possesses deceleration of electrons control, implements braking by ECU.
9, according to claim 1,3,4 described enhancement type tire pressure monitoring systems, it is characterized in that: master control system adopts the RF power divider to carry out many antennas connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007100349987A CN101311693B (en) | 2007-05-25 | 2007-05-25 | Enhancement type tire pressure monitoring system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100349987A CN101311693B (en) | 2007-05-25 | 2007-05-25 | Enhancement type tire pressure monitoring system and control method |
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| CN101311693A true CN101311693A (en) | 2008-11-26 |
| CN101311693B CN101311693B (en) | 2010-08-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010017674A1 (en) * | 2008-08-12 | 2010-02-18 | 桂林思超汽车科技优先公司 | Reinforced tire pressure monitoring system and its control method |
| CN102848863A (en) * | 2012-08-23 | 2013-01-02 | 青岛天顺成新技术有限公司 | Automobile tire pressure monitoring alarm system and control method thereof |
| CN105799432A (en) * | 2016-04-26 | 2016-07-27 | 桂林思超汽车科技有限公司 | Tire bursting and tire pressure monitoring method and module |
| CN108227531A (en) * | 2018-02-12 | 2018-06-29 | 宁波威迪思智能科技有限公司 | Automobile flat tire self-aid auxiliary device and hypervelocity alarming method with hypervelocity alarm function |
| CN110823447A (en) * | 2019-11-15 | 2020-02-21 | 合肥杰发科技有限公司 | Storage method of air pressure detection device and related device and system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60024574T2 (en) * | 1999-12-20 | 2006-08-24 | Trw Automotive U.S. Llc, Livonia | Device and method for checking the operating state of a vehicle tire |
| JP3876799B2 (en) * | 2002-09-09 | 2007-02-07 | 株式会社デンソー | Tire pressure monitoring system |
| US7040154B2 (en) * | 2004-04-19 | 2006-05-09 | Freescale Semiconductor, Inc. | Motion sensing for tire pressure monitoring |
| CN100342409C (en) * | 2005-01-21 | 2007-10-10 | 何崇中 | TPMS radio-frequency transmitter with electricity-saving mode |
| CN100504681C (en) * | 2005-05-23 | 2009-06-24 | 沈渝平 | Power supply management device of tyre pressure monitoring system |
| CN1876409B (en) * | 2005-06-09 | 2011-07-06 | 浙江吉利控股集团有限公司 | Tyre pressure monitoring system functional improvement and enlargement technology |
| CN1982095A (en) * | 2005-12-15 | 2007-06-20 | 傅建中 | TPMS improved scheme and long-range monitoring module external-supplying tyre barometric controlling system |
-
2007
- 2007-05-25 CN CN2007100349987A patent/CN101311693B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010017674A1 (en) * | 2008-08-12 | 2010-02-18 | 桂林思超汽车科技优先公司 | Reinforced tire pressure monitoring system and its control method |
| CN102848863A (en) * | 2012-08-23 | 2013-01-02 | 青岛天顺成新技术有限公司 | Automobile tire pressure monitoring alarm system and control method thereof |
| CN102848863B (en) * | 2012-08-23 | 2015-04-08 | 青岛天顺成新技术有限公司 | Automobile tire pressure monitoring alarm system and control method thereof |
| CN105799432A (en) * | 2016-04-26 | 2016-07-27 | 桂林思超汽车科技有限公司 | Tire bursting and tire pressure monitoring method and module |
| CN105799432B (en) * | 2016-04-26 | 2018-06-08 | 桂林思超汽车科技有限公司 | It blows out and tire pressure monitoring method and module |
| CN108227531A (en) * | 2018-02-12 | 2018-06-29 | 宁波威迪思智能科技有限公司 | Automobile flat tire self-aid auxiliary device and hypervelocity alarming method with hypervelocity alarm function |
| CN110823447A (en) * | 2019-11-15 | 2020-02-21 | 合肥杰发科技有限公司 | Storage method of air pressure detection device and related device and system |
| CN110823447B (en) * | 2019-11-15 | 2021-10-15 | 武汉杰开科技有限公司 | Storage method of air pressure detection device and related device and system |
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