CN105984288A - Code study method of wireless tire pressure monitoring system - Google Patents
Code study method of wireless tire pressure monitoring system Download PDFInfo
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- CN105984288A CN105984288A CN201510055544.2A CN201510055544A CN105984288A CN 105984288 A CN105984288 A CN 105984288A CN 201510055544 A CN201510055544 A CN 201510055544A CN 105984288 A CN105984288 A CN 105984288A
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- tire
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- signal strength
- angle information
- strength indicator
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Abstract
The invention relates to a code study method of a wireless tire pressure monitoring system. The wireless tire pressure monitoring system comprises several monitors and a receiver, and the code study method comprises the following steps: each monitor detects the rotation angle of each tire and generates the corresponding angle information; each monitor converts the angle information and an identifier to a wireless signal and then the wireless signal is sent; the receiver receives the wireless signal, and acquires the angle information, the identifier and a receive signal strength indicator (RSSI) of the wireless signal; the receiver determines the corresponding relation between the monitor and the tire according to the angle information and the receive signal strength indicator, and then the identifier and the corresponding tire are matched. Thereby, the cooperation of the receive signal strength indicator and the rotation angle of the tire provides simpleness for code study, and the time can be saved.
Description
Technical field
The present invention is relevant with radio tire pressure monitoring system；Particularly relate to a kind of radio tire pressure monitoring system
Code method.
Background technology
Radio tire pressure monitoring system includes multiple monitor and a receptor, and described monitor is respectively
Be installed on each tire of vehicle, in order to detect the tire pressure of tire, tire temperature and send be loaded with tire pressure,
The wireless signal of tire temperature is to this receptor.This receptor receives the tire pressure that respectively this monitor is sent
After, tire pressure, tire temperature are monitored, in pressure of tire, tire temperature, occur the abnormal initial stage, i.e. obtain
Give a warning, to reach the effect of pre-runflat, it is to avoid casualty accident occurs.
Radio tire pressure monitoring system when mounted, must have first to the monitor being installed on respectively this tire
Code location.Existing code method nothing more than be sequentially by the outside of tire to the monitor in tire
Triggering, make described monitor sequentially send its identifier to receptor, receptor is by identifier
Match with the position of tire.For example, each tire except vehicle is sequentially let out by technical staff
Partial pressure, then sends to represent have the mark of this monitor when monitor detects the rapid change of tire pressure
Symbol, to allow receptor by corresponding with each tire for respectively this monitor identifier.After learning code,
Described tire still must be inflated once again, just can make road on this vehicle safety.
When needs are learned yard again (such as changeable wheel fetal position or renew tire after), it is necessary to again
Secondary sequentially trigger monitor, allow receptor received in sequence identifier again and matching, for making
For user, existing code method, relatively time consuming and use on quite inconvenience.
Summary of the invention
In view of this, it is an object of the invention to provide the code side of a kind of radio tire pressure monitoring system
Method, coordinates the rotational angle of tire with received signal strength indicator value, makes code method the easiest.
Edge is to reach above-mentioned purpose, and radio tire pressure provided by the present invention monitors the code method of system,
Wherein this radio tire pressure monitoring system is arranged on a vehicle, and this radio tire pressure monitoring system includes
Multiple monitors and a receptor, described monitor is respectively arranged in the multiple different wheel of this vehicle
Tire, respectively this monitor for the detecting respectively rotational angle of this tire, tire pressure and sends wireless signal
To this receptor；This code method comprises the steps of A. according to respectively this tire location
Set up the multiple of corresponding respectively this monitor to refer to reference to received signal strength with multiple with reference to angle information
The corresponding relation of indicating value (Received Signal Strength Indicator, RSSI) scope；B. detect
Survey the rotational angle of respectively this tire, and produce an angle information of correspondence；C. in respectively this every turn of tire
During a dynamic predetermined angular, by the angle information of respectively this tire and an identifier conversion of each this monitor
It it is transmission after a wireless signal；D. respectively this wireless signal is received, in acquirement respectively this wireless signal
One received signal strength indicator value of angle information, identifier and each this wireless signal；And E. depends on
Angle information and received signal strength indicator value according to correspondence respectively this identifier are corresponding with step A
Respectively the described of this monitor is carried out with reference to received signal strength indicator value with described with reference to angle information
Comparison, with the corresponding relation of judgement respectively this monitor with the respectively position of this tire, and by respectively this mark
Symbol and the pairing of corresponding tire.
Effect of the invention is that the wireless signal of angle information when utilizing tyre rotation and correspondence
Received signal strength indicator value judge respectively this monitor and the corresponding relation of tire installed, nothing
Need personnel sequentially monitor to be triggered by outside tires, allow radio tire pressure monitor the installation of system
And it is the easiest and time-consuming to learn code.
Accompanying drawing explanation
Fig. 1 is the radio tire pressure monitoring system that the present invention the first preferred embodiment is applied.
Fig. 2 is the monitor schematic diagram of the above-mentioned preferred embodiment of the present invention.
Fig. 3 is the tyre rotation schematic diagram of the above-mentioned preferred embodiment of the present invention.
Fig. 4 is the rotational angle corresponding relation with gravity of the tire of the above-mentioned preferred embodiment of the present invention
Figure.
Fig. 5 is the receptor schematic diagram of the above-mentioned preferred embodiment of the present invention.
Fig. 6 is the reference angle letter of the monitor of corresponding the near front wheel of the above-mentioned preferred embodiment of the present invention
Breath and the feature pattern with reference to received signal strength indicator value scope.
Fig. 7 is the reference angle letter of the monitor of the corresponding off-front wheel of the above-mentioned preferred embodiment of the present invention
Breath and the feature pattern with reference to received signal strength indicator value scope.
Fig. 8 is the reference angle letter of the monitor of the corresponding left rear wheel of the above-mentioned preferred embodiment of the present invention
Breath and the feature pattern with reference to received signal strength indicator value scope.
Fig. 9 is the reference angle letter of the monitor of the corresponding off hind wheel of the above-mentioned preferred embodiment of the present invention
Breath and the feature pattern with reference to received signal strength indicator value scope.
[symbol description]
100 radio tire pressure monitoring systems
10 monitors
12 tyre pressure sensors
14 gravity sensors
16 first processors
18 wireless signal transtation mission circuits
20 receptors
22 wireless signal receiving circuits
24 received signal strength indicators analyze module
26 second processor 262 memorizeies
30 display
V vehicle
T tire
U higher limit
L lower limit
Detailed description of the invention
For the present invention can be illustrated more clearly that, hereby lifts preferred embodiment and coordinate diagram to describe in detail such as
After, please join shown in Fig. 1 to Fig. 5, be applied by the code method of a preferred embodiment of the present invention
Radio tire pressure monitoring system 100, this radio tire pressure monitoring system 100 is arranged on a vehicle V,
And include multiple monitor 10 and a receptor 20.
Described monitor 10 is installed in the multiple different tire T of this vehicle V respectively, described
The structure of monitor 10 is the most identical, in after hereby lift wherein explanation as a example by this monitor 10.Please join
Readding Fig. 2, this monitor 10 comprises tyre pressure sensor 12, gravity sensor 14,1 first
Processor 16 and a wireless signal transtation mission circuit 18.This tyre pressure sensor 12 is used for detecting tire T
Tire pressure；This gravity sensor 14 is used for detecting produced gravity during tyre rotation；This is first years old
Processor 16 is electrically connected with this tyre pressure sensor 12, this gravity sensor 14 is sent out with this wireless signal
Power transmission road 18, this first processor 16 receives tire pressure that this tyre pressure sensor 12 detected, this is heavy
The gravity that force transducer 14 is detected, and this first processor 16 is according to this tyre pressure sensor 12
The tire pressure detected produces the tire pressure of a correspondence, and according to measured by this gravity sensor 14
Gravity to should the rotational angle of tire T, and then produce a corresponding angle information.
For example, refer to Fig. 3 and Fig. 4, rotate along with this tire T and make this monitor 10
When moving the position to 90 °, the sensitive axis of this gravity sensor 14 is identical with gravitational direction,
Therefore this gravity measured by gravity sensor 14 is maximum, rotates along with this tire T and makes this prison
When survey device 10 gradually moves toward the position of 270 °, measured gravity is gradually reduced, until this prison
Survey gravity measured when device 10 is moved toward the position of 90 ° from the position of 270 ° to be gradually increased.By
This, correspondence can be gone out rotational angle current for this tire T by measured gravity.Due to tire T
During rotation, the gravity recorded presents such as the figure of string ripple, therefore, at tire T with the relation of angle
During rotation, gravity sensor 14, within certain sample time, is carried out by this first processor 16
The sampling of multiple spot, and the change of gravity acquired in sample time is judged tire T after calculation
Rotational angle.Such as, when the change of gravity obtained be rise decline the most again time, i.e.
Can learn that gravity rises to tire T rotational angle corresponding during peak is 90 degree；Gravity by
When little and change slope the absolute value of gradual change is maximum, then representing tire T rotational angle is 180 degree.
Then, this first processor 16 is by an identifier, this tire pressure and this angle information
After being compiled into a package, be converted to the nothing with this package through this wireless signal transtation mission circuit 18
Line signal also sends it, and wherein this identifier is exclusive by this monitor 10, is different from other prisons
Survey the identifier of device 10, and the wireless signal sent is in the present embodiment for radiofrequency signal.
This receptor 20 is arranged in this vehicle V, including the wireless signal being sequentially electrically connected with
Receive circuit 22, received signal strength indicator and analyze module 24 and one second processor 26.Should
Wireless signal receiving circuit 22 receives the wireless signal that respectively this monitor 10 is sent, and this reception is believed
The instruction of number intensity analyzes module 24 in order to receive wireless signal at this wireless signal receiving circuit 22
Time, analyze received signal strength indicator value (the Received Signal Strength of wireless signal
Indicator, RSSI).This second processor 26 interprets the package in this wireless signal, by package
Middle this identifier of correspondence, this tire pressure and this angle information of obtaining, and receive this reception letter
The received signal strength indicator value that module 24 is analyzed is analyzed in the instruction of number intensity.This second processor 26
Having a memorizer 262, this memorizer 262 stores many wheels number, and the described number of wheel is for identification institute
State the position of tire T.Additionally, this memorizer 262 separately stores correspondence respectively this monitor 10
Multiple with reference to angle informations and multiple with reference to received signal strength indicator value scope, respectively this reference angle
Degree information correspondence respectively this reference received signal strength indicator value scope.This receptor 20 is electrically connected with
One display 30, the tire pressure received is shown by this receptor 20 through this display 30.
In the present embodiment, the described reference angle information of corresponding respectively this monitor 10 and described reference
Received signal strength indicator value scope is to record in advance before dispatching from the factory, and is stored in this memorizer 262
In.Before dispatching from the factory, the radio tire pressure of same model is monitored system 100 and be installed in the car of test
On V, under different operating conditions, drive according to respectively this tire T location that respectively this is taken turns
Tire T rotates, respectively this monitor 10 persistently send the wireless signal being loaded with angle information, then with
Receptor 20 record respectively respectively this tire T at the angle information corresponding to different rotational angles and
Received signal strength indicator value, and it is stored in this memorizer 262 composition correspondence respectively this monitor 10
Described with reference to angle information and described with reference to received signal strength indicator value scope.In practice, if
The most only driving this tire T to rotate, monitor 10 can not send its identifier；If it is whole
Tire T rotates together, and respectively this monitor 10 must send identifier using as difference.Aforesaid
Operating condition comprises on road conditions, the car money of this vehicle V and this vehicle V that this vehicle V is travelled
At least one in the number taken, thus, available respectively this monitor 10 operates in difference
Under the conditions of the scope of receiving intensity indicated value of different angles, and formed with reference to received signal strength
Indicated value scope.
Then, an external electronic is used to read correspondence respectively this monitor 10 in this memorizer 262
Described with reference to angle information and described with reference to received signal strength indicator value scope, and store to it
In the memorizer 262 of the receptor 20 of its radio tire pressure monitoring system 100, it is right the most i.e. to complete
Should the respectively reference angle information of this monitor 10 and setting with reference to received signal strength indicator value scope
Fixed.
Please coordinate shown in Fig. 6 to Fig. 9, be respectively the ginseng of the corresponding respectively monitor 10 of this tire T
Examine angle information and the feature pattern of the relation with reference to received signal strength indicator value scope, respectively
This reference received signal strength indicator value scope corresponding to reference angle information has a higher limit
A U and lower limit L, the wireless signal that respectively this monitor 10 is sent is in the reception of different angles
Signal strength indication value will fall between higher limit U and lower limit L.Structure due to vehicle V
And the wireless signal that the position of tire T will cause monitor 10 to be sent has in different angles
Different received signal strength indicator values, makes the feature corresponding to monitor 10 of described tire T
Figure is different, and therefore, reference angle information and the reference of corresponding respectively this monitor 10 receive
Signal strength indication value scope can be as the comparison basis judging tire T location.
By above-mentioned structure, the code method that the present embodiment is follow-up can be carried out.
Respectively this monitor 10 persistently obtains respectively this tire T through its gravity sensor 14 and rotates time institute
The gravity produced, and the angle information of correspondence is produced by respectively this first processor 16.And respectively should
First processor 16 turns according to Gravity calculation respectively this tire T measured by respectively this gravity sensor 14
Time needed for a dynamic circle.
Respectively this first processor 16 is judged the rotation of respectively this tire T by the angle information persistently produced
Angle, and when respectively this tire T often rotates a predetermined angular, send electricity through respectively this wireless signal
Road 18 will include the angle information of respectively this tire T and the envelope of each this identifier of this monitor 10
Bag sends after being converted to wireless signal.In the present embodiment, respectively this first processor 16 will respectively this be taken turns
Time needed for tire T rotates a circle is divided into multiple interval time, each of which this interval time of system
Corresponding respectively this tire T rotates the time of this predetermined angular.Respectively this first processor 16 is in often passing through
During one this interval time, by the angle information of respectively this tire T and this mark of each this monitor 10
Symbol sends after being converted to wireless signal.For example, respectively this tire T rotation one circle takes 1 second,
1 second is divided into 36 equal portions, is each interval time 1/36 second, in other words, every 1/36
Time i.e. correspondence respectively this tyre rotation 10 ° of second.
This wireless signal receiving circuit 22 of this receptor 20 persistently receives respectively this monitor 10 institute
Respectively this wireless signal transmitted, and this received signal strength indicator analyze module 24 analyze respectively this nothing
The received signal strength indicator value of line signal, is obtained the angle in package by this second processor 26
Information and identifier, and the received signal strength indicator value of wireless signal.Thus, this is at second
Reason device 26 can obtain respectively this tire T and at the angle information corresponding to different rotational angles and connect
Receive signal strength indication value.
This second processor 26 is according to these angle informations multiple corresponding to same identifier and multiple
This corresponding received signal strength indicator value and corresponding respectively this monitoring stored in this memorizer 262
Described reference angle information and the described reference received signal strength indicator value scope of device 10 compare,
Corresponding relation with judgement respectively this monitor 10 with the respectively position of this tire T.In the present embodiment,
The mode of comparison is to calculate each reception corresponding to rotational angle information of corresponding same identifier
Whether signal strength indication value falls within this memorizer 262 each of corresponding this monitor 10
With reference in the range of received signal strength indicator value.Owing to correspondence stored in memorizer 262 respectively should
Described reference angle information and the described reference received signal strength indicator value scope of monitor 10 are
Set up according to the position of each tire T, therefore, when the wireless signal corresponding to this identifier
Received signal strength indicator value in each rotational angle all falls within the monitoring in corresponding specific tires T
Time in the range of the reference received signal strength indicator value of device 10, i.e. judge that wireless signal is by arranging
Monitor 10 on corresponding tire T is sent, thus, i.e. can determine whether respectively this monitor 10 with
The respectively corresponding relation of this tire T.
This second processor 26 is by respectively this number of wheel stored by memorizer 262 and respectively this mark afterwards
Symbol pairing, i.e. completes respectively this identifier and the pair relationhip of corresponding tire.
After having matched, can proceed by tire pressure monitoring, respectively this monitor 10 is by measured
Identifier, tire pressure be compiled as package to being converted to send after wireless signal；This receptor 20
Contained identifier and tire pressure in the wireless signal that respectively this monitor 10 is sent can be obtained,
The tire pressure of the tire T of each position of vehicle V is learnt by the pair relationhip of identifier with wheel number, then
Show tire pressure through display 30 or send warning when abnormal tyre pressure.
In above-described embodiment, angle information when utilizing tire T to rotate and the wireless signal of correspondence
Received signal strength indicator value connects with the reference angle information corresponding to respectively this monitor 10 and reference
Receiving signal strength indication value scope comparison, can correctly judge respectively this monitor 10 and tire T
Corresponding relation.Even if tire T reversing of position and need to again learn code, at the tire T of same position
On the received signal strength indicator value of wireless signal that sends of monitor 10 still can be close, so,
Again depending on the angle information of the identifier acquired by correspondence and received signal strength indicator value with should
The described reference angle information of correspondence respectively this monitor 10 institute stored in memorizer 262 and institute
State and compare with reference to received signal strength indicator value scope, i.e. can determine whether respectively representated by this identifier
Monitor 10 and the corresponding relation of tire T location, then by identifier and wheel number pairing,
I.e. complete code again.
Hereinafter reoffer one second preferred embodiment, the judgement learning code can be allowed the most accurate.The present invention
The second embodiment be based on first embodiment, complete respectively this monitor 10 identifier with
After corresponding tire T pairing, also comprise the steps of
Respectively this monitor 10 the most at set intervals by identifier, the tire pressure of tire T,
The angle information of a corresponding rotational angle is compiled into package, and is converted to wireless signal transmission.
This receptor 20 receives the wireless signal of respectively this monitor 10 constantly, persistently to obtain mark
These angle informations multiple of knowledge symbol and the respectively tire pressure of this tire T, corresponding multiple rotational angles
And the received signal strength value of multiple wireless signals of correspondence.
This receptor 20 connects at multiple this corresponding to this angle information same according to respectively this tire T
Receive signal strength indication value and adjust corresponding with reference to received signal strength indicator value scope.In this enforcement
In example, this second processor 26 is received one this received signal strength indicator value to be stored in
In this memorizer 262, to form new reference received signal strength indicator value scope.Thus, allow
Reference received signal strength indicator value scope stored by memorizer 262 is actual with on receptor 20
Received signal strength indicator value more meet, allow same vehicle V follow-up again carry out learn code time
Contrast judgement more accurate.
In sum, the learning when code method utilizes tyre rotation of radio tire pressure of the present invention monitoring system
The received signal strength indicator value of the wireless signal of angle information and correspondence is strong with reference to receiving signal
Degree indicated value scope comparison, to judge respectively this monitor and the corresponding relation of the tire installed, makes
User, without sequentially being triggered monitor by outside tires, makes the code of radio tire pressure monitoring system more
Easy and time-consuming.Additionally, after the corresponding relation of tire Yu monitor has matched, hold
Update with reference to received signal strength indicator value scope continuously, more can allow comparison when again carrying out learning code
Judge more accurate.
The foregoing is only the preferable possible embodiments of the present invention, such as apply description of the invention
And the equivalence change for it of right institute, ought to be included in the scope of the claims of the present invention.
Claims (6)
1. the code method of a radio tire pressure monitoring system, it is characterised in that this radio tire pressure is supervised
Examining system is arranged on a vehicle, and this radio tire pressure monitoring system includes multiple monitor and and connects
Receiving device, described monitor is respectively arranged in the multiple different tire of this vehicle, and respectively this monitor is used
In the detecting respectively rotational angle of this tire, tire pressure and transmission wireless signal to this receptor；This
Code method comprises the steps of
A. the multiple with reference to angle of corresponding respectively this monitor are set up according to respectively this tire location
Information and multiple corresponding relations with reference to received signal strength indicator value scope；
B. detect the rotational angle of respectively this tire, and produce an angle information of correspondence；
C., when respectively this per tyre turn one predetermined angular, by the angle information of respectively this tire and respectively should
One identifier of monitor sends after being converted to a wireless signal；
D. respectively this wireless signal, the angle information in acquirement respectively this wireless signal, identifier are received
And a received signal strength indicator value of each this wireless signal；And
E. according to the angle information of corresponding respectively this identifier and received signal strength indicator value and step
In A, corresponding respectively this monitor is described with reference to angle information and described with reference to received signal strength indicator
Value scope is compared, with the corresponding relation of judgement respectively this monitor with the respectively position of this tire, and
Respectively this identifier is matched with corresponding tire.
2. radio tire pressure monitors the code method of system as claimed in claim 1, it is characterised in that
Respectively this monitor includes a gravity sensor, respectively should through the detecting of respectively this gravity sensor in step B
Produced gravity during tyre rotation, and according to the angle of rotation of corresponding respectively this tire of measured gravity
Degree.
3. radio tire pressure monitors the code method of system as claimed in claim 2, it is characterised in that
Step B comprises foundation Gravity calculation respectively this tyre rotation one circle respectively measured by this gravity sensor
The required time；Step C comprises and respectively this tyre rotation one is enclosed the required time is divided into multiple
Interval time, the time of each of which this interval time of corresponding respectively this this predetermined angular of tyre rotation；
In often through this interval time in step C, by angle information and respectively this monitoring of respectively this tire
This identifier of device sends after being converted to this wireless signal.
4. radio tire pressure monitors the code method of system as claimed in claim 1, it is characterised in that
It is under different operating conditions in step A, drives respectively this tyre rotation, and according to respectively this tire
Location record respectively this tire is in the angle information corresponding to different rotational angles and reception
Signal strength indication value, to constitute the described reference angle information of corresponding respectively this monitor and described ginseng
Examine received signal strength indicator value scope.
5. radio tire pressure monitors the code method of system as claimed in claim 4, it is characterised in that
Operating condition in step A comprises road conditions, the car money of this vehicle and this vehicle that this vehicle is travelled
On at least one in the number taken.
6. radio tire pressure monitors the code method of system as claimed in claim 1, it is characterised in that
Comprise the steps of after step E
Persistently receive wireless signal, with persistently obtain respectively this tyre rotation time, corresponding this mark same
These angle informations multiple of symbol and these received signal strength indicator values multiple of correspondence；
Strong according to these reception signals multiple corresponding to this angle information same of this identifier same
Degree indicated value adjusts the reference received signal strength indicator value scope of corresponding monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055544.2A CN105984288B (en) | 2015-02-03 | 2015-02-03 | The code method of radio tire pressure monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055544.2A CN105984288B (en) | 2015-02-03 | 2015-02-03 | The code method of radio tire pressure monitoring system |
Publications (2)
| Publication Number | Publication Date |
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| CN105984288A true CN105984288A (en) | 2016-10-05 |
| CN105984288B CN105984288B (en) | 2018-11-16 |
Family
ID=57037010
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510055544.2A Expired - Fee Related CN105984288B (en) | 2015-02-03 | 2015-02-03 | The code method of radio tire pressure monitoring system |
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| Country | Link |
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| CN109153297A (en) * | 2017-04-27 | 2019-01-04 | 太平洋工业株式会社 | receiver |
| CN112622534A (en) * | 2020-12-25 | 2021-04-09 | 武汉飞恩微电子有限公司 | Self-learning method based on tire pressure monitoring system and tire pressure monitoring system |
| CN113602045A (en) * | 2020-05-04 | 2021-11-05 | 车王电子股份有限公司 | Wireless recording method of tire pressure detector |
| CN114683779A (en) * | 2020-12-29 | 2022-07-01 | 橙的电子股份有限公司 | Wireless tire pressure sensor positioning method and system for motor vehicle |
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| CN114683779A (en) * | 2020-12-29 | 2022-07-01 | 橙的电子股份有限公司 | Wireless tire pressure sensor positioning method and system for motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105984288B (en) | 2018-11-16 |
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