CN102189979A - System and method for integrating tire pressure monitoring and remote key-free entering - Google Patents
System and method for integrating tire pressure monitoring and remote key-free entering Download PDFInfo
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- CN102189979A CN102189979A CN201010121961XA CN201010121961A CN102189979A CN 102189979 A CN102189979 A CN 102189979A CN 201010121961X A CN201010121961X A CN 201010121961XA CN 201010121961 A CN201010121961 A CN 201010121961A CN 102189979 A CN102189979 A CN 102189979A
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Abstract
The invention relates to a system and method for integrating tire pressure monitoring and remote key-free entering, which are applied to a vehicle and a key remote controller for the vehicle. The key remote controller for the vehicle emits a signal with a predetermined carrier frequency. When the vehicle is in a locking state, an integrated controller in the vehicle detects an unlocking signal from the key remote controller for the vehicle, transmits a tire information requiring signal to a tire pressure sensing module if confirming an identity authentication code of the unlocking signal from the key remote controller for the vehicle. The tire pressure sensing module sends a tire information signal at least including tire pressure data within a predetermined time limit, and transmits the tire information signal at the predetermined carrier frequency. Therefore, the advantages of hardware sharing and accordance with safety specification are achieved.
Description
Technical field
The present invention relates to a kind of method of tire pressure monitoring, particularly a kind ofly integrate tire pressure monitoring and exempt from the method that key enters.
Background technology
During tire pressure (hereinafter to be referred as tire pressure) mal,, more can influence Che Liang Brake car performance or the raising chance of blowing out except meeting reduces tire life and increases the fuel consumption in vehicles.Therefore, for guaranteeing traffic safety, tire pressure monitoring system (Tire Pressure Monitoring System abbreviates TPMS as) is employed gradually, effectively to inform user's tire pressure.General tire pressure monitoring system comprises tire pressure sensing cell and the RF transceiver (being collectively referred to as the tire pressure sensing module) that is installed in the tire position, is placed on RF transceiver and telltale in the car in addition.After the tire pressure sensing cell records the tire pressure data, transmit the tire pressure data behind the wireless receiver that is placed in the car, on vehicle display, show the tire pressure data that measure by wireless (for example radio frequency) transceiver at the tire position.
Exempt from key and enter system (Keyless Entry System) and be widely used at present on the automobile, so as to replacing traditional physical key.Exempting from key enters system and can be divided into Remote Keyless Entry (be called for short RKE) and two kinds of forms of Passive Keyless Entry (being called for short PKE).The RKE system needs the user to press the automobile-used keyfob button of RKE just can open lock.The PKE system does not need the user to press the automobile-used keyfob button of PKE, as long as the close vehicle of the automobile-used keyfob of PKE, car door is a lock in person even if.Exempt from key at above-mentioned two kinds and enter in the system, automobile-used keyfob all has wireless launcher, and corresponding wireless receiver also is installed in the car.
Above-mentioned tire pressure monitoring system and exempt from key to enter system be the system that belongs to independently working separately in the prior art, not interactive or shared each other part.That is to say to have cover wireless receiver and an associated component to be used for corresponding tire pressure monitoring system in the automobile, and need another set of wireless receiver and associated component to be used for correspondence to exempt from key and enter system.Yet tire pressure monitoring system and RKE exempt from key and enter system and but be to use identical frequency to carry out the transmission of data.Therefore, use wireless transceiver separately and associated components will cause hardware to repeat and the cost waste.
Moreover, the tire pressure sensing module of general tire pressure sensing system, because the position is within tire, so mostly by battery as electric power, the tire information signal of this tire pressure sensing module sends the cycle, that is twice tire information signal send interlude can not be too short, avoiding the loss of electric power, so generally speaking the user can't know the tire pressure data immediately.Yet for higher safety requirements is provided, the tire pressure sensing module preferably can need to provide immediately the tire pressure data the user in car, to improve safe effect.
Summary of the invention
A purpose of the present invention is to provide a kind of integration tire pressure monitoring that the tire pressure data can be provided in real time and long-rangely exempts from the System and method for that key enters.
Another object of the present invention is to provide a kind of integration tire pressure monitoring of taking into account the tire pressure real-time property and can economizing on electricity and long-rangely exempt from the System and method for that key enters.
For reaching above-mentioned purpose of the present invention, the invention provides a kind of integration tire pressure monitoring and the long-range key system of exempting from comprises an integrated controller and at least one tire pressure sensing module.This integrated controller is positioned at this vehicle and comprises a Central Processing Unit (CPU) and a wireless centrex Transmit-Receive Unit.This tire pressure sensing module is positioned at vehicle tyre and comprises a tire pressure processing unit, a tire pressure wireless transmit/receive units and a tire pressure sensing cell, wherein this tire pressure processing unit is electrically connected to this tire pressure wireless transmit/receive units and this tire pressure sensing cell, and this tire wireless transmit/receive units is with the signal operation of this predetermined carrier frequency.This integrated controller is at the unlocking signal that receives this automobile-used keyfob and after confirming the authentication sign indicating number of unlocking signal, promptly send a tire information requirement signal to this tire pressure sensing module, and this tire pressure sensing module is sent the tire information signal that comprises the tire pressure data at least in an intended duration.
For reaching above-mentioned purpose of the present invention, the present invention also provides a kind of integration tire pressure monitoring and the long-range key system method of exempting to comprise:
(a) when vehicle is in locking state, detect from automobile-used keyfob unlocking signal;
(b) if affirmation from the authentication sign indicating number of automobile-used keyfob unlocking signal, then transmits tire information requirements signal to the tire pressure sensing module; And
(c) this tire pressure sensing module sends a tire information signal in an intended duration, and the tire information signal is with this predetermined carrier frequency transmission and comprise the tire pressure data at least.
The present invention only needs a wireless frequency Transmit-Receive Unit to get final product corresponding tire pressure monitoring system and exempt from key and enters system by above-mentioned system and method in the car, therefore will save manufacturing cost greatly.The tire pressure sensing module can (for example in 6 seconds) transmit the tire pressure data in certain time limit of release, to reach higher safety standard requirements.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the application scheme drawing of explanation integration tire pressure monitoring of the present invention and automobile-used remote controlled unlocking system;
Fig. 2 is the block scheme of explanation integration tire pressure monitoring of the present invention and automobile-used remote controlled unlocking system;
Fig. 3 is the operational flowchart of explanation integration tire pressure monitoring of the present invention and automobile-used remote controlled unlocking system;
Fig. 4 sends the scheme drawing of tire information signal period for explanation.
Wherein, Reference numeral
10 integrated controllers
100 Central Processing Unit (CPU)s, 110 wireless centrex Transmit-Receive Units
110a wireless centrex receiving element 110b wireless centrex transmitter unit
120 antennas
20 tire pressure sensing modules
200 tire pressure processing units, 210 tire pressure wireless transmit/receive units
210a tire pressure radio receiving unit 210b tire pressure wireless transmitting unit
220 tire pressure sensing cells, 230 power supplys
30 automobile-used keyfob
300 remote control control units, 310 remote control wireless transmitting unit
Step S100-S140
The specific embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done concrete description:
Please refer to Fig. 1, it is for the application scheme drawing of integration tire pressure monitoring of the present invention and automobile-used remote controlled unlocking system is described.Integration tire pressure monitoring of the present invention and automobile-used remote controlled unlocking system are to be applied on the vehicle, and comprise integrated controller 10 and at least one tire pressure sensing module 20 (icon is 4) that is positioned at vehicle.This vehicle have one with the automobile-used keyfob 30 of its collocation, and this integrated controller 10, tire pressure sensing module 20 and automobile-used keyfob 30 each other can wireless mode communications.More specifically, this integrated controller 10, tire pressure sensing module 20 and automobile-used keyfob 30 are to be scheduled to the wireless signal of high frequent carrier frequency with communication each other with one, this high frequent carrier frequency for example can be 433.92MHz or 315MHz, but can also be the frequency of other scope.
Please refer to Fig. 2, it is for the block scheme of integration tire pressure monitoring of the present invention and automobile-used remote controlled unlocking system is described.This integrated controller 10 comprises a Central Processing Unit (CPU) 100, a wireless centrex receiving element 110a, a wireless centrex transmitter unit 110b and an antenna 120; Wherein this wireless centrex receiving element 110a and this wireless centrex transmitter unit 110b are electrically connected with this Central Processing Unit (CPU) 100, and can be integrated into a wireless centrex Transmit-Receive Unit 110.This wireless centrex Transmit-Receive Unit 110 can reach two way communication to receive the release/command signal of locking from this automobile-used keyfob 30, to reach with this tire pressure sensing module 20 by wireless signal each other by this antenna 120.But the interpretation behind routine plan of this Central Processing Unit (CPU) 100 and is sent the command signal of control tire pressure sensing module 20 from the release/command signal of locking of automobile-used keyfob 30.This automobile-used keyfob 30 has a remote control control unit 300, remote control wireless transmitting unit 310, antenna (not icon) and a plurality of button (not icon).The user can control the wireless command signal that car door is unblanked/locked to launch by the button of pressing on this automobile-used keyfob 30, and has an identity heading code (ID code) in this command signal of unblanking/lock.After this Central Processing Unit (CPU) 100 receives this command signal of unblanking/lock via this antenna 120 and this wireless centrex Transmit-Receive Unit 110, if confirm that the built-in identity code of identity code and vehicle in this order is identical, promptly control Door Lock (not shown) and carry out the car door action of unblanking and lock.
This tire pressure sensing module 20 comprises a tire pressure processing unit 200, a tire pressure radio receiving unit 210a, a tire pressure wireless transmitting unit 210b and a tire pressure antenna (not icon), wherein tire pressure radio receiving unit 210a and tire pressure wireless transmitting unit 210b can transmit signal with wireless mode each other with the wireless centrex transmitter unit 110b and the wireless centrex receiving element 110a of integrated controller 10, and can be integrated into a tire pressure wireless transmit/receive units 210.This tire pressure sensing module 20 comprises a tire pressure sensing cell 220 and a power supply (for example being a battery) 230 in addition, wherein the electric power of other assembly in this this tire pressure sensing module 20 of power supply 230 supplies; This tire pressure sensing cell 220 is electrically connected to this tire pressure processing unit 200, so that measured tire pressure data are sent to this tire pressure processing unit 200.This tire pressure processing unit 200 can be handled this tire pressure sensing cell 220 take off data, and converts the signal of suitable tire pressure wireless transmit/receive units 210 emissions to, and this part is a prior art, therefore repeats no more.In addition, this tire pressure processing unit 200 can receive the control command (receiving via tire pressure wireless transmit/receive units 210) from Central Processing Unit (CPU) 100, with the control tire information signal emission cycle (seeing aftermentioned for details).Even this tire pressure sensing module 20 can comprise other sensing cell in addition, for example temperature sensing unit (not icon) or electric power sensing unit (not icon) are with temperature and battery electric power in the sensing tire.
This tire pressure sensing module 20 (when for example not lighting a fire) when vehicle does not use is launched the tire information signal to this integrated controller 10 with long standby cycle, and wherein this tire information signal comprises at least one in tire pressure, tyre temperature and the battery electric power data.When this tire pressure sensing module 20 requires signal at the tire information that receives these integrated controller 10 transmissions, promptly can in an intended duration (for example 6 seconds), send the tire information signal immediately to this integrated controller 10.This tire information signal transmits with rf carrier (for example 433.92MHz or 315MHz).According to a preferred embodiments of the present invention, this moment, this tire information signal comprised tire pressure data at least.This tire pressure sensing module 20 (for example igniting back) when vehicle uses is launched the tire information signal to this integrated controller 10 with short operating cycle, and wherein this tire information signal comprises at least one in tire pressure, tyre temperature and the battery electric power data.
Referring to Fig. 3, for the operational flowchart of integration tire pressure monitoring of the present invention and automobile-used remote controlled unlocking system is described.When step S100, this vehicle is in a locking state.In step S102, this integrated controller 10 receives the unlock command signal from this automobile-used keyfob 30 subsequently, and after the identity code of differentiating this unlock command signal meets (S110), then carries out release action (S112).
After the vehicle release, this integrated controller 10 can send a tire information requirement signal immediately to this tire pressure sensing module 20, to require this tire pressure sensing module 20 to transmit tire information (S114) immediately, and this tire pressure sensing module 20 can be in an intended duration (for example 6 seconds), tire information (this moment, tire information comprised tire pressure data at least) is sent to this integrated controller 10 with the tire information signal, and is stored on this integrated controller 10 of this vehicle.This integrated controller 10 can be judged the engine ignition (S120) of this vehicle subsequently, and these integrated controller 10 transmission one-period switching signals are to this tire pressure sensing module 20, to switch the cycle (S122) of tire pressure sensing module 20 transmission tire information signals.
Referring to Fig. 4, for the explanation scheme drawing of transmission tire information signal period, before engine ignition, this tire pressure sensing module 20 sends the tire information signal with long standby cycle (standby period) Ps.After the car door release, this integrated controller 10 sends a tire information and requires signal to this tire pressure sensing module 20, then this tire pressure sensing module 20 transmits the tire information signal (adding the signal of oblique line referring to Fig. 4) that comprises the tire pressure data at least immediately to this integrated controller 10, to inform integrated controller 10 tire pressure data immediately.After engine ignition, this tire pressure sensing module 20 sends tire information signal, wherein Ps＞Po with short operating cycle (Operationperiod) Po.Therefore after vehicle ignition was travelled, the user can learn the latest data (sending with cycle Po) of tire pressure in real time.When vehicle did not travel, the user still can learn the tire pressure data (sending with long cycle Ps) of renewal, and can separate province's tire battery electric power.
After vehicle ignition, if this integrated controller 10 is judged cut the engine (S130) of this vehicle, then these integrated controller 10 transmission one-period switching signals are to this tire pressure sensing module 20, to switch the cycle (S132) of tire pressure sensing module 20 transmission tire information signals.Clearer and more definite, the cycle that this tire pressure sensing module 20 will send the tire information signal switches to long standby cycle Ps, to save electric power.
If this integrated controller 10 is received the command signal of locking (S140) from this automobile-used keyfob 30, this kind situation represents the car owner should leave vehicle and vehicle no longer is in motoring condition, therefore this integrated controller 10 can be returned to initial locking state (step S100) with its serviceability, and continues to wait for the unlock command signal that receives from this automobile-used keyfob 30.
In sum, integration tire pressure monitoring of the present invention with exempt from the system and method that key enters and comprise following characteristics:
1. only need one group of wireless transmit/receive units to get final product corresponding tire pressure monitoring system and exempt from key in the car and enter system, therefore will save manufacturing cost greatly.
2. exempting from after key enters system acting and untie Door Lock, transmit tire information requirements signal immediately to the tire pressure sensing module, and the tire pressure sensing module can transmit the tire information that comprises the tire pressure data at least at an intended duration (for example 6 seconds in), the user can in time be learnt before travelling the tire pressure data reach higher safety standard requirements.
3. in the time of before vehicle ignition, this tire pressure sensing module is sent tire information with the long cycle, and after vehicle ignition, this tire pressure sensing module is sent tire information with the short cycle, to take into account safety and economize on electricity property.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. integrate tire pressure monitoring and long-rangely exempt from the system that key enters for one kind, be applied to a vehicle and an automobile-used keyfob, this automobile-used keyfob is launched the signal of a predetermined carrier frequency; It is characterized in that this system comprises:
One integrated controller is positioned at this vehicle and comprises a Central Processing Unit (CPU) and a wireless centrex Transmit-Receive Unit, and wherein this wireless centrex Transmit-Receive Unit is electrically connected to this Central Processing Unit (CPU); And
At least one tire pressure sensing module, be positioned at vehicle tyre and comprise a tire pressure processing unit, a tire pressure wireless transmit/receive units and a tire pressure sensing cell, wherein this tire pressure processing unit is electrically connected to this tire pressure wireless transmit/receive units and this tire pressure sensing cell, and this tire pressure wireless transmit/receive units is with this predetermined carrier frequency operation;
Wherein this integrated controller is at the unlocking signal that receives this automobile-used keyfob and after confirming the authentication sign indicating number of unlocking signal, promptly send a tire information requirement signal to this tire pressure sensing module, and this tire pressure sensing module is sent the tire information signal that comprises the tire pressure data at least in an intended duration.
2. integration tire pressure monitoring according to claim 1 and long-rangely exempt from the system that key enters is characterized in that this intended duration is 6 seconds.
3. integration tire pressure monitoring according to claim 1 and long-rangely exempt from the system that key enters, it is characterized in that, before this car engine igniting, this tire pressure sensing module sends this tire information signal with a standby cycle, after this car engine igniting, this tire pressure sensing module sends this tire information signal with an operating cycle, and this standby cycle is greater than this operating cycle.
4. integration tire pressure monitoring according to claim 1 and long-rangely exempt from the system that key enters is characterized in that this predetermined carrier frequency is 433.92MHz or 315MHz.
5. integration tire pressure monitoring according to claim 1 and long-rangely exempt from the system that key enters is characterized in that this tire pressure sensing module also comprises a battery.
6. integrate tire pressure monitoring and long-rangely exempt from the method that key enters for one kind, be applied to a vehicle and an automobile-used keyfob, this automobile-used keyfob is launched the signal of a predetermined carrier frequency, it is characterized in that, this method comprises:
(a) when vehicle is in locking state, detect from automobile-used keyfob unlocking signal;
(b) if affirmation from the authentication sign indicating number of automobile-used keyfob unlocking signal, then transmits tire information requirement signal to a tire pressure sensing module; And
(c) this tire pressure sensing module sends a tire information signal in an intended duration, and this tire information signal is with this predetermined carrier frequency transmission and comprise the tire pressure data at least.
7. integration tire pressure monitoring according to claim 6 and long-rangely exempt from the method that key enters is characterized in that this predetermined carrier frequency is 433.92MHz or 315MHz.
8. integration tire pressure monitoring according to claim 6 and long-rangely exempt from the method that key enters is characterized in that this intended duration is 6 seconds.
9. integration tire pressure monitoring according to claim 6 and long-rangely exempt from the method that key enters, it is characterized in that, before this car engine igniting, this tire pressure sensing module sends this tire information signal with a standby cycle, after this car engine igniting, this tire pressure sensing module sends this tire information signal with an operating cycle, and this standby cycle is greater than this operating cycle.
10. integration tire pressure monitoring according to claim 6 and long-rangely exempt from the method that key enters is characterized in that the tire pressure sensing module is a battery type tire pressure sensing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010121961XA CN102189979A (en) | 2010-03-11 | 2010-03-11 | System and method for integrating tire pressure monitoring and remote key-free entering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010121961XA CN102189979A (en) | 2010-03-11 | 2010-03-11 | System and method for integrating tire pressure monitoring and remote key-free entering |
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| CN102189979A true CN102189979A (en) | 2011-09-21 |
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| CN201010121961XA Pending CN102189979A (en) | 2010-03-11 | 2010-03-11 | System and method for integrating tire pressure monitoring and remote key-free entering |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104081716A (en) * | 2012-01-31 | 2014-10-01 | 株式会社东海理化电机制作所 | Wireless communications system |
| CN106739861A (en) * | 2017-01-20 | 2017-05-31 | 东南（福建）汽车工业有限公司 | A kind of tire pressure detection control system for being integrated in PEPS system |
| CN108860060A (en) * | 2018-06-04 | 2018-11-23 | 广东合微集成电路技术有限公司 | Intelligent tire system, which combines, exempts from the method that key system finding key button bit is set |
| CN110901310A (en) * | 2019-11-28 | 2020-03-24 | 东风商用车有限公司 | Commercial vehicle tire pressure detection system |
| CN110901309A (en) * | 2019-11-28 | 2020-03-24 | 东风商用车有限公司 | Tire pressure detection method for commercial vehicle |
| CN113602046A (en) * | 2021-08-27 | 2021-11-05 | 东风汽车有限公司东风日产乘用车公司 | Vehicle tire pressure checking method, electronic equipment, server and storage medium |
| CN114683781A (en) * | 2022-04-22 | 2022-07-01 | 重庆金康赛力斯新能源汽车设计院有限公司 | Tire pressure monitoring method and device and electronic equipment |
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| US20040113765A1 (en) * | 2002-12-10 | 2004-06-17 | Alps Electric Co., Ltd. | Passive keyless entry device for monitoring tire pneumatic pressure by bidirectional communication |
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| EP0671289A1 (en) * | 1994-03-10 | 1995-09-13 | Delco Electronics Corporation | Vehicle remote actuating system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104081716A (en) * | 2012-01-31 | 2014-10-01 | 株式会社东海理化电机制作所 | Wireless communications system |
| CN104081716B (en) * | 2012-01-31 | 2017-05-24 | 株式会社东海理化电机制作所 | Wireless communications system |
| CN106739861A (en) * | 2017-01-20 | 2017-05-31 | 东南（福建）汽车工业有限公司 | A kind of tire pressure detection control system for being integrated in PEPS system |
| CN108860060A (en) * | 2018-06-04 | 2018-11-23 | 广东合微集成电路技术有限公司 | Intelligent tire system, which combines, exempts from the method that key system finding key button bit is set |
| CN110901310A (en) * | 2019-11-28 | 2020-03-24 | 东风商用车有限公司 | Commercial vehicle tire pressure detection system |
| CN110901309A (en) * | 2019-11-28 | 2020-03-24 | 东风商用车有限公司 | Tire pressure detection method for commercial vehicle |
| CN113602046A (en) * | 2021-08-27 | 2021-11-05 | 东风汽车有限公司东风日产乘用车公司 | Vehicle tire pressure checking method, electronic equipment, server and storage medium |
| CN114683781A (en) * | 2022-04-22 | 2022-07-01 | 重庆金康赛力斯新能源汽车设计院有限公司 | Tire pressure monitoring method and device and electronic equipment |
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Application publication date: 20110921 |