CN207481578U - Tire real-time positioning system in TPMS fields is applied based on wireless radio-frequency - Google Patents
Tire real-time positioning system in TPMS fields is applied based on wireless radio-frequency Download PDFInfo
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- CN207481578U CN207481578U CN201720921187.8U CN201720921187U CN207481578U CN 207481578 U CN207481578 U CN 207481578U CN 201720921187 U CN201720921187 U CN 201720921187U CN 207481578 U CN207481578 U CN 207481578U
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Abstract
The utility model discloses a kind of tire real-time positioning system applied based on wireless radio-frequency in TPMS fields, including ID modules, tire ID identification module, radio receiving terminal and the processing of TPMS systems and display module built in tire；ID modules are fixed on inside tires by bonding method built in the tire；The tire ID identification module is rack-mount；The radio receiving terminal is arranged on body bottom, and radio receiving terminal is connected by cable with interior display.The tire real-time positioning system provided by the utility model applied based on wireless radio-frequency in TPMS fields.Effectively save cost of labor improves the efficiency of work in the input for safeguarding TPMS systems, and TPMS systems can more be assisted to improve the ease for operation and reliability of system, be conducive to wideling popularize and using for TPMS systems.
Description
Technical field
The utility model is related to vehicle electric fields, and the wheel in TPMS fields is more particularly to applied based on wireless radio-frequency
Tire real-time positioning system.
Background technology
As country constantly payes attention to TPMS systems, the market of TPMS systems is also increasing；In the installation of TPMS systems
It is very time-consuming, it is necessary to be installed to corresponding position using corresponding tire, tire location could be made on display interface
It is corresponding with the information of tire, once installation site mistake can lead to the mismatch of data, and mislead driver and carry out accordingly
Operation；If the sensor ID number that the different tire of tire is changed when tire breaks down is different, to have to tire work manual
The ID number of change corresponding position, thus more wasteful artificial input cost, and efficiency is low are removed in operation.
Utility model content
The purpose of this utility model is to overcome the above problems, provide one kind and are applied based on wireless radio-frequency in TPMS
The tire real-time positioning system in field.
In order to achieve the above objectives, the method for the utility model use is：One kind is applied based on wireless radio-frequency in TPMS
The tire real-time positioning system in field, including ID modules, tire ID identification module, radio receiving terminal and TPMS built in tire
System processing and display module；ID modules are fixed on inside tires by bonding method built in the tire；The tire
ID identification modules are rack-mount, and stent is mounted on the mud guard in vehicle face tire centre position；Described wirelessly connects
It receives terminal and is arranged on body bottom, radio receiving terminal is connected by cable with interior display.
As a kind of improvement of the utility model, low frequency control circuit, height are included inside the tire ID identification module
Frequency transmitting module, power control circuit, central processing unit circuit.
As a kind of improvement of the utility model, ID modules built in tire use EM4305 chips.
As a kind of improvement of the utility model, vehicle body power supply is connected with the tire ID identification module, is tire
ID identification modules are powered.
As a kind of improvement of the utility model, the front of the tire ID identification module and tyre surface air distance are minimum
In 30cm.
Advantageous effect：
The tire real-time positioning system provided by the utility model applied based on wireless radio-frequency in TPMS fields.Effectively
Cost of labor is saved in the input for safeguarding TPMS systems, improves the efficiency of work, TPMS systems can more be assisted to improve the easy of system
Operability and reliability, are conducive to wideling popularize and using for TPMS systems.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of ID modules built in the tire of the utility model；
Fig. 3 is the structure diagram of the tire ID identification module of the utility model；
Fig. 4 is the circuit diagram of the power control circuit of the utility model；
Fig. 5 is the circuit diagram of the high-frequency emission module of the utility model；
Fig. 6 is the circuit diagram of the low frequency module of the utility model；
Fig. 7 is the scheme of installation of the tire ID identification module of the utility model.
Specific embodiment
The utility model is further described with reference to embodiment and with reference to attached drawing, it should be understood that following specific embodiment parties
Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.It should be noted that make in being described below
Word "front", "rear", "left", "right", "up" and "down" refer to the direction in width figure, and word " interior " and " outer " respectively refer to
Be directed towards or the direction far from particular elements geometric centers.
As shown in Figure 1, apply the tire in TPMS fields real based on wireless radio-frequency the utility model discloses a kind of
When alignment system, including ID modules built in tire, tire ID identification module, radio receiving terminal and the processing of TPMS systems and aobvious
Show module.
ID modules are fixed on inside tires by bonding method built in the tire；ID modules built in tire use
EM4305 chips, EM4305 are CMOS integrated circuits, this chip contains 32 unique identifiers of factory program（UID）.
EM4305 provides the resonant capacitance of a 330p.This chip by external coil be internally integrated formed together with capacitance it is humorous
Shake circuit, and energy is obtained from continuous 125kHz magnetic fields and is started.Chip reads data from internal EEPROM, and by with
The load resistance of coils from parallel connection of coils cut-offs the deep width modulation of generation, data is sent, circuit diagram such as Fig. 2 institutes of EM4305 chips
Show.
The tire ID identification module is rack-mount, and stent is mounted on the gear mud in vehicle face tire centre position
On plate, front and the tyre surface air distance of tire ID identification module are less than 30cm；The radio receiving terminal is arranged on vehicle body
Bottom, radio receiving terminal are connected by cable with interior display.Include inside the tire ID identification module low
Frequency control circuit, high-frequency emission module, power control circuit, central processing unit circuit.
The block diagram of tire ID identification module is as shown in figure 3, include low frequency control circuit, high frequency inside tire ID identification module
Transmitting module, power control circuit, four part of central processing unit circuit.
Central processing unit function include by power control circuit come control low frequency module in work be also non-work
Make state, the data that decoded low frequency module receives, the continuous carrier function of controlling low frequency module, the decoded data of processing simultaneously
Signal is sent out through the packaged data of high-frequency model by signal wire.
Power control circuit Elementary Function is:By microcontroller send out power control signal go control low frequency module work
State（On or off）, the power consumption of Low-frequency Modes block can be made in minimum state；Working condition is described as：Tire ID module is after the power is turned on
Initialization, low frequency module can send continuous carrier signal always, after thering is the response of ID modules to send data to low frequency module by
Microcontroller decoding data resets low frequency module immediately after, after low frequency module receives identical correct data twice in succession,
The data that microcontroller storage receives, then microcontroller transmission power control signal is to power control circuit closing low frequency module
Power supply to achieve the purpose that reduce power consumption, can also increase the service life of inside tires ID modules, the read-write time of internal ID modules
Limited about 10,000 times of number；The circuit of the part is as shown in Figure 4.WRM_POWER_CORTL is the power control signal of microcontroller,
5V is the general supply of tire ID identification module, and 5V_1 is the supply network of low frequency module, and R2, R3 are for current-limiting resistance, WRM_
5V_1 and 5V networks disconnect low frequency module and do not work when POWER_CORTL is high level, when WRM_POWER_CORTL is low
5V_1 with 5V networks be connected low frequency module work；
High-frequency emission module, using the 433.92MHZ frequency ranges of standard come transmission data；Working condition describes：Work as centre
Reason unit will carry out data the processing of certain rule when receiving the data identical twice sent by low frequency module, so
Afterwards by data through high-frequency model（433.92MHZ）The radio receiving terminal of temperature and pressure detecting system is sent to, continuously transmits 10 times (often
Every 500ms seconds send 5 times) afterwards microcontroller can in a dormant state, can be repeated again when re-powering after above step sequentially execution
Function；Figure below be high frequency sending module schematic diagram, wherein C1, C2 be module shunt capacitance, R1, R2 be current-limiting resistance, L1,
C3 provides the frequency band of one fixed width for LC oscillating circuits, and X1 is the SAW filter of 433.92MHZ, and Q2 is common crystal
Pipe, Q1 are the transistor of amplification, and L2 is feedback inductance, and C4 is coupled capacitor, and H1 is transmitting antenna.The circuit diagram of the part
As shown in Figure 5.
The course of work of low frequency module is described in detail as follows：The module can continuously transmit the carrier wave letter of 125KHZ after the power-up
Number, after receiving ID number identical twice（By the monolithic processor resetting low frequency module after receiving for the first time, phase is received twice in succession
After same ID number）, closed through central processing unit to the power supply of entire module；The hair of the ID modules of low frequency module and inside tires
Penetrating and receive power is debugged by distance, the ID modules of low frequency module and inside tires only distance away with
Interior situation can just be mutually distinguishable success, and the partial circuit diagram is as shown in Figure 6.
Specific embodiment makes further instructions the installation of the system of the utility model below：
By one 6 wheel bus for, before left and right single-wheel be named as 1, No. 2 tire, behind left and right for two-wheel name
For 3,4 and 5, No. 6 tires, preprepared ID modules are loaded onto inside each tire.In the front of each tire
Tire ID fixation and recognition module is loaded onto in the position of mud plate, as shown in Figure 7：On the mud guard 3 in 4 centre position of vehicle face tire
A diameter of 142*142mm square racks 2 are installed, 1 four angles of tire ID identification module are screwed on stent 2（Wheel
Tire ID identification modules cannot be directly mounted on mud guard）, tire ID identification module 1 is made to be located at tire tread middle, module is just
Face is up to 30cm with tyre surface air distance.The circular hole of an a diameter of 20mm is opened on mud guard 3 behind 2 middle of mounting bracket
Then interface of the vehicle body power supply directly with tire ID identification module 1 is connected, the direct current supply of 20-24V.
Radio receiving terminal is mounted on the bottom of vehicle body, is connected with cable with the display of position of driver, and to this
Monitor power supply；This completes the installations and power supply of all parts of tire positioning identification system.
Radio receiving terminal, function are that the 433.92MHZ wireless datas that will be received are converted to electric signal and are transmitted to CPU（It is aobvious
Show device module）Processing is exactly a hardware decoding, wireless data is converted to TTL signal.
The workflow applied based on wireless radio-frequency in the tire real-time positioning system in TPMS fields of the utility model
Journey is as follows：
Tire real-time positioning system starts powered operation while vehicle body general supply is opened, tire ID identification module also can
Start powered operation together（On condition that tire ID number on the respective wheel position of foetus is not known）, the tire installed on the position of foetus is each taken turns at this time
ID identification modules can continuously transmit the carrier signal of certain frequency by low frequency module, until the tire ID on the respective wheel position of foetus is known
The microcontroller of other module（MCU）It detects that MCU after the signal that ID modules issue can store data at this time, then passes through control
Signal pins allow low frequency module resets, then repeatedly above step, are stored if identical ID data are received next time
Data, and the ID number for recording this inside tires sensor is the last data received, and the power control pin for passing through MCU is gone
Close the work of low frequency module.
The data received for the first time are abandoned if the data received for the second time are different with first time, then reset low frequency again
Module until in the identical just storage to the storage region inside MCU of the data received twice, then passing through the power supply control of MCU again
Pin processed goes to close the work of low frequency module (low frequency module is least in power-consuming at this time).
（The operation principle of six tires is the same）It has been identified and stored in MCU at this time corresponding on each wheel position of foetus
Tire ID number, using the encapsulation and processing of MCU, plus the wheel corresponding to tire ID identification module in data after treatment
The position of foetus（Such as：01 the near front wheel, 02 off-front wheel, 03 left back revolver, 04 left back right wheel, revolver behind 05 right side, 06 right rear right wheel）And
The regular coding of every suit product sends the wireless of tire temperature tire pressure monitoring system to by the frequency of high-frequency model 433.92MHZ
Terminal is received, the mechanism of transmission is：After re-powering every time, after detecting correct ID number, high-frequency model is co-continuous to send 20
Secondary identical data send 5 data every 500MS, send 4 times altogether, and the 2-3S times distribute, and being in dead angle with protected tyre influences
The transmission of data.
The radio receiving terminal of tire temperature tire pressure monitoring system is again uploaded to data the display of tire temperature tire pressure monitoring system
Module, display apparatus module upon receipt of the data and to the data understand and and original display apparatus module in corresponding tire
ID number on position compares, and abandons new data if the same, old ID number is substituted for new ID number if different,
Thereby realize identification and positioning of the change of real time tire ID number so as to fulfill tire；Above process is in no manual intervention
In the case of realize the Auto-matching of tire ID number, that is, complete the whole process of Full-automatic tire fixation and recognition.
The above descriptions are merely preferred embodiments of the present invention, is not to make any other to the utility model
The limitation of form, and any modification made according to the technical essence of the utility model or equivalent variations, it is new to still fall within this practicality
Type range claimed.
Claims (5)
1. the tire real-time positioning system in TPMS fields is applied based on wireless radio-frequency, it is characterised in that：Including in tire
Put ID modules, tire ID identification module, radio receiving terminal and the processing of TPMS systems and display module；Built in the tire
ID modules are fixed on inside tires by bonding method；The tire ID identification module is rack-mount, and stent is mounted on
On the mud guard in vehicle face tire centre position, the radio receiving terminal is arranged on body bottom, radio receiving terminal
It is connected by cable with interior processing and display module.
2. the tire real-time positioning system according to claim 1 applied based on wireless radio-frequency in TPMS fields,
It is characterized in that：Include inside the tire ID identification module low frequency control circuit, high-frequency emission module, power control circuit,
Central processing unit circuit.
3. the tire real-time positioning system according to claim 1 applied based on wireless radio-frequency in TPMS fields,
It is characterized in that：ID modules built in tire use EM4305 chips.
4. the tire real-time positioning system according to claim 1 applied based on wireless radio-frequency in TPMS fields,
It is characterized in that：Vehicle body power supply is connected with the tire ID identification module, powers for tire ID identification module.
5. the tire real-time positioning system according to claim 1 applied based on wireless radio-frequency in TPMS fields,
It is characterized in that：The front of tire ID identification module is less than 30cm with tyre surface air distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921187.8U CN207481578U (en) | 2017-07-27 | 2017-07-27 | Tire real-time positioning system in TPMS fields is applied based on wireless radio-frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921187.8U CN207481578U (en) | 2017-07-27 | 2017-07-27 | Tire real-time positioning system in TPMS fields is applied based on wireless radio-frequency |
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| Publication Number | Publication Date |
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| CN207481578U true CN207481578U (en) | 2018-06-12 |
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ID=62484694
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| CN201720921187.8U Active CN207481578U (en) | 2017-07-27 | 2017-07-27 | Tire real-time positioning system in TPMS fields is applied based on wireless radio-frequency |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109591524A (en) * | 2018-10-31 | 2019-04-09 | 南京泰晟科技实业有限公司 | A kind of recognition methods of Full-automatic tire positioning system |
| CN110077181A (en) * | 2019-06-13 | 2019-08-02 | 长春大学 | A kind of wireless coalignment of Tire Pressure Monitor System |
| CN111114213A (en) * | 2020-01-03 | 2020-05-08 | 南京泰晟科技实业有限公司 | TPMS automatic calibration device and method |
-
2017
- 2017-07-27 CN CN201720921187.8U patent/CN207481578U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109591524A (en) * | 2018-10-31 | 2019-04-09 | 南京泰晟科技实业有限公司 | A kind of recognition methods of Full-automatic tire positioning system |
| CN110077181A (en) * | 2019-06-13 | 2019-08-02 | 长春大学 | A kind of wireless coalignment of Tire Pressure Monitor System |
| CN111114213A (en) * | 2020-01-03 | 2020-05-08 | 南京泰晟科技实业有限公司 | TPMS automatic calibration device and method |
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