CN102303489A - Method and system for flexibly configuring tire pressure monitor system (TPMS) transmitter - Google Patents
Method and system for flexibly configuring tire pressure monitor system (TPMS) transmitter Download PDFInfo
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- CN102303489A CN102303489A CN201110176915A CN201110176915A CN102303489A CN 102303489 A CN102303489 A CN 102303489A CN 201110176915 A CN201110176915 A CN 201110176915A CN 201110176915 A CN201110176915 A CN 201110176915A CN 102303489 A CN102303489 A CN 102303489A
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Abstract
The invention relates to a method and a system for flexibly configuring a tire pressure monitor system (TPMS) transmitter. The method comprises the following steps of: 1, storing the configuration data of the TPMS emitter in a storage; 2, sending a configuration data updating command to a low frequency (LF) receiving circuit of the TPMS transmitter by an LF transmission circuit of the LF transmitter; 3, sending an acknowledgement character (AKC) acknowledgement signal to an ultra high frequency (UHF) receiver of the LF transmitter by a UHF transmitter of the TPMS transmitter to ensure the validity of the configuration data updating command; and 4, updating the configuration data in the storage by the TPMS transmitter according to the received configuration data. The invention also provides the system for flexibly configuring the TPMS transmitter. The method and the system for flexibly configuring the TPMS transmitter do not additionally increase hardware cost, and the aim of updating the configuration data of the TPMS transmitter is fulfilled through non-electrical connection and in a wireless mode; and by the method and the system, the TPMS transmitter can be flexibly configured so as to adapt to the actual conditions of different models and tires, and different running strategies are set and the customizing requirements of a client are met.
Description
Technical field
The present invention relates to the vehicle-mounted product technical field of vehicle electronics, relate in particular to a kind of flexible configuration method and system of TPMS projector.
Background technology
In the process of running at high speed of automobile, tire fault is that all drivers worry and the most difficult prevention the most, also is the major reason that sudden traffic accident takes place.The traffic accident accident that causes by blowing out at present occupies the freeway accident accident umber one, and blowing out becomes one of arteries of communication killer.According to statistics, the traffic accident that on Chinese express highway, takes place has 70% owing to blow out and cause, in this ratio of the U.S. then up to 80%.How to prevent to blow out and become an important topic of safe driving.According to the analysis expert at national rubber tire quality surveillance center, the tyre pressure that maintains the standard travels and finds that in time tire gas leakage is to prevent the key of blowing out.And TPMS---the automotive tyre pressure monitoring system undoubtedly will be desirable instrument.
The automotive tyre pressure monitoring system adopts direct-type TPMS projector to be installed in inside tires usually; Utilization is installed in the air pressure that each pressure sensor of taking turns tyre cavity comes direct drawings, utilizes the TPMS projector that pressure information is sent to the TPMS receptor from inside tires.The TPMS projector has special disposable installation environment; Particular location is between profile and tire; The TPMS projector usually adopts the inferior battery of disposable non-electrically-charged lithium, and generally handles with encapsulating, so the TPMS projector belongs to disposable installation, non-maintaining and disassemble basically.As shown in Figure 1, it is the block diagram of existing TPMS projector.Existing TPMS projector mainly comprises embedded system 1, UHF projector (superfrequency projector) 2, antenna 3, sensor 4 and LF acceptor circuit 5 (low frequency receptor); Microcontroller 1 is connected with UHF projector 2, sensor 4 and 5 communications of LF acceptor circuit respectively; The data such as air pressure that sensor 4 is gathered inside tires; The control program that microcontroller 1 is responsible for carrying out the TPMS emitter terminals, the data of collection are sent to the TPMS receptor by UHF projector 2 via antenna 3; In the prior art, LF acceptor circuit 5 is mainly used in the arousal function of TPMS projector, can realize that the effect of economizing on electricity, its specification can specifically select for use to accepting 125KHz ASK modulation (speed 2～4Kbit/s) signals.
According to TPMS system and operating needs, the TPMS projector need be done following configuration usually at least:
A.ID sets: the TPMS receptor need be found out projector ID, and corresponding with axle number (tire location);
B. normal tire pressure: different kinds of tyre has different normality standards with vehicle;
C. Pressure/Temperature bound: the threshold value that is used to judge the Pressure/Temperature height;
D.TPMS projector operation strategy: comprise and measuring and strategies such as the frequency of data transmission, abnormal data processing;
E. running state: projector comprises travelling position and the installation and operation state produced at least;
F. modulation system: projector can switch at ASK (amplitude shift key modulation) and FSK (frequency shift keying modulation);
G. baseband signal data: comprise preamble code, ID and forms such as data and check code;
H. other.
According to the method for TPMS transmitter configuration of the prior art, above-mentioned various configuration datas solidify basically in the code of TPMS projector, because the special disposable installation environment of TPMS projector, promptly can't change its configuration after being mounted to it in tire.
Summary of the invention
Therefore, the objective of the invention is to adapt to the special disposable installation environment of TPMS projector, but a kind of method and system of flexible configuration TPMS projector are provided.
For realizing above-mentioned purpose, the present invention provides a kind of flexible configuration method of TPMS projector, and it comprises:
The configuration data of step 1, TPMS projector is set to be stored in the memory device;
Wherein, said memory device is RAM or EEPROM.
Wherein, in the step 2, the configuration data update instruction is for send one by one.
The present invention also provides a kind of flexible configuration system of TPMS projector, and it comprises:
The TPMS projector, it comprises the memory device that is used to preserve configuration data, be used to the UHF projector that receives the LF acceptor circuit of configuration data update instruction and be used to send the ACK acknowledge signal; And
The LF projector, it comprises and is used to the UHF receptor that sends the LF transmission circuit of configuration data update instruction and be used to receive the ACK acknowledge signal;
During configuration data through this LF transmitter configuration TPMS projector; This LF projector sends the configuration data update instruction through the LF transmission circuit, the configuration data in the configuration data update instruction updated stored device that this TPMS projector receives according to its LF acceptor circuit; When this TPMS transmitter receipt instructed to the effective configuration Data Update, it sent the ACK acknowledge signal to this LF projector, and this LF projector is according to the transmission of the reception condition control configuration data update instruction of ACK acknowledge signal.
Wherein, said memory device is RAM or EEPROM.
The flexible configuration method and system of TPMS projector of the present invention are the additive incrementation hardware cost not, adopts not have to be electrically connected, and through wireless mode, reaches the purpose of upgrading TPMS transmitter configuration data; Adopt the flexible configuration method and system of TPMS projector of the present invention, but flexible configuration TPMS projector, and the actual conditions of adaptation different automobile types and tire are set different operation strategies, satisfy client's customization requirement.
Description of drawings
Below in conjunction with accompanying drawing, describe in detail through specific embodiments of the invention, will make technical scheme of the present invention and other beneficial effects apparent.
In the accompanying drawing,
Fig. 1 is the block diagram of existing TPMS projector;
Fig. 2 is the principle of work scheme drawing of the flexible configuration method of TPMS projector of the present invention;
Fig. 3 is the hardware block diagram of the LF projector used in flexible configuration method one preferred embodiment of TPMS projector of the present invention;
Fig. 4 is TPMS projector (from the side) diagram of circuit of the flexible configuration method one preferred embodiment configuration data renewal process of TPMS projector of the present invention;
Fig. 5 is LF projector (master side) main flow chart of the flexible configuration method one preferred embodiment configuration data renewal process of TPMS projector of the present invention.
The specific embodiment
Referring to Fig. 2 and Fig. 3, Fig. 2 is the principle of work scheme drawing of the flexible configuration method of TPMS projector of the present invention, and Fig. 3 is the hardware block diagram of the LF projector used in flexible configuration method one preferred embodiment of TPMS projector of the present invention.In addition, the structure of the TPMS projector that the flexible configuration method of TPMS projector of the present invention is applied to can be referring to Fig. 1, and it can utilize existing TPMS projector to realize, need not to change the hardware configuration of existing TPMS projector.LF projector 7 mainly comprises microcontroller 71, UHF receptor 72 and LF transmission circuit 73 etc.
The flexible configuration method of TPMS projector of the present invention comprises:
The configuration data of step 1, TPMS projector 6 is set to be stored in the memory device; Configuration data in TPMS projector 6 codes is independent, be stored in RAM or EEPROM (the TPMS projector is power down process not, is stored among the RAM feasible), perhaps other can be erasable memory device, like FLASH, be updated preparing.
Referring to Fig. 4 and Fig. 5, Fig. 4 is TPMS projector (from the side) diagram of circuit of the flexible configuration method one preferred embodiment configuration data renewal process of TPMS projector of the present invention, and Fig. 5 is LF projector (master side) main flow chart.The implementation process of the flexible configuration method of TPMS projector of the present invention is actually in master side (master)---LF projector and from the side (the slave)---communication process between the TPMS projector.Can confirm in advance between master side with from the communications protocol between the side,, accomplish the renewal configuration data and be sent to from master side, accomplish configuration data updating task from the side from the side through the response protocol of confirming.
LF projector and TPMS projector all can be carried out the configuration data renewal process through the Automatic Program of its microcontroller.According to shown in Figure 5, among this embodiment, the configuration data update instruction is for send one by one; Instruction of every transmission; The LF projector all can be waited for TPMS projector ACK acknowledge signal, sends situation so as to decision instruction, thereby selects to continue to send next bar or resend present instruction.
The present invention also provides a kind of flexible configuration system of TPMS projector, comprising:
The TPMS projector, it comprises the memory device that is used to preserve configuration data, be used to the UHF projector that receives the LF acceptor circuit of configuration data update instruction and be used to send the ACK acknowledge signal; And
The LF projector, it comprises and is used to the UHF receptor that sends the LF transmission circuit of configuration data update instruction and be used to receive the ACK acknowledge signal;
During configuration data through this LF transmitter configuration TPMS projector; This LF projector sends the configuration data update instruction through the LF transmission circuit, the configuration data in the configuration data update instruction updated stored device that this TPMS projector receives according to its LF acceptor circuit; When this TPMS transmitter receipt instructed to the effective configuration Data Update, it sent the ACK acknowledge signal to this LF projector, and this LF projector is according to the transmission of the reception condition control configuration data update instruction of ACK acknowledge signal.
Wherein, said memory device is RAM or EEPROM.
The flexible configuration method and system of TPMS projector of the present invention do not increase additional hardware resources; Utilize LF (low frequency) communication port; Wireless mode upgrades TPMS transmitter configuration data, reaches flexibly, effect (utilize existing UHF radio channel, do ACK acknowledge signal passage) easily.
The above; For the person of ordinary skill of the art; Can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of accompanying Claim of the present invention.
Claims (5)
1. the flexible configuration method of a TPMS projector is characterized in that, comprising:
The configuration data of step 1, TPMS projector is set to be stored in the memory device;
Step 2, the LF transmission circuit through the LF projector send the configuration data update instruction to the LF of TPMS projector acceptor circuit;
Step 3, the UHF projector through the TPMS projector send the ACK acknowledge signal to guarantee the validity of configuration data update instruction to the UHF of LF projector receptor;
Step 4, TPMS projector are according to the configuration data in the configuration data update instruction updated stored device that receives.
2. the flexible configuration method of TPMS projector as claimed in claim 1 is characterized in that, said memory device is RAM or EEPROM.
3. the flexible configuration method of TPMS projector as claimed in claim 1 is characterized in that, in the step 2, the configuration data update instruction is for send one by one.
4. the flexible configuration system of a TPMS projector is characterized in that, comprising:
The TPMS projector, it comprises the memory device that is used to preserve configuration data, be used to the UHF projector that receives the LF acceptor circuit of configuration data update instruction and be used to send the ACK acknowledge signal; And
The LF projector, it comprises and is used to the UHF receptor that sends the LF transmission circuit of configuration data update instruction and be used to receive the ACK acknowledge signal;
During configuration data through this LF transmitter configuration TPMS projector; This LF projector sends the configuration data update instruction through the LF transmission circuit, the configuration data in the configuration data update instruction updated stored device that this TPMS projector receives according to its LF acceptor circuit; When this TPMS transmitter receipt instructed to the effective configuration Data Update, it sent the ACK acknowledge signal to this LF projector, and this LF projector is according to the transmission of the reception condition control configuration data update instruction of ACK acknowledge signal.
5. the flexible configuration system of TPMS projector as claimed in claim 4 is characterized in that, said memory device is RAM or EEPROM.
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| CN 201110176915 CN102303489B (en) | 2011-06-28 | 2011-06-28 | Method and system for flexibly configuring tire pressure monitor system (TPMS) transmitter |
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| CN 201110176915 CN102303489B (en) | 2011-06-28 | 2011-06-28 | Method and system for flexibly configuring tire pressure monitor system (TPMS) transmitter |
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| CN102303489A true CN102303489A (en) | 2012-01-04 |
| CN102303489B CN102303489B (en) | 2013-10-30 |
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| CN107415601A (en) * | 2016-05-02 | 2017-12-01 | 法国大陆汽车公司 | For by the method for numerical data remote loading to electronic unit |
| CN107660183A (en) * | 2015-06-02 | 2018-02-02 | 大陆汽车系统公司 | Tire Pressure Monitoring Sensor |
| CN108638764A (en) * | 2018-04-10 | 2018-10-12 | 深圳市沃特沃德股份有限公司 | Tire pressure equipment exchange method and car-mounted terminal |
| CN108958769A (en) * | 2018-06-26 | 2018-12-07 | 四川斐讯信息技术有限公司 | A kind of embedded device software systems restorative procedure and system |
| CN112319146A (en) * | 2020-10-16 | 2021-02-05 | 深圳市云伽智能技术有限公司 | Learning method, device, sensor, system and medium of tire pressure monitoring system |
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| CN108958769A (en) * | 2018-06-26 | 2018-12-07 | 四川斐讯信息技术有限公司 | A kind of embedded device software systems restorative procedure and system |
| CN112319146A (en) * | 2020-10-16 | 2021-02-05 | 深圳市云伽智能技术有限公司 | Learning method, device, sensor, system and medium of tire pressure monitoring system |
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| CN102303489B (en) | 2013-10-30 |
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