CN100399046C - Positioning method for tire state sensor - Google Patents
Positioning method for tire state sensor Download PDFInfo
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- CN100399046C CN100399046C CNB2004100797814A CN200410079781A CN100399046C CN 100399046 C CN100399046 C CN 100399046C CN B2004100797814 A CNB2004100797814 A CN B2004100797814A CN 200410079781 A CN200410079781 A CN 200410079781A CN 100399046 C CN100399046 C CN 100399046C
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Abstract
The present invention relates to a positioning method for tire state sensing devices, which is used for identifying the positions of a plurality of tire state sensing devices installed on a transportation tool. Firstly, a start-up state of all antennas in the transportation tool is maintained to receive and decode a signal transmitted by one of the tire state sensing devices in a tire monitored, and thereby, a kind of signal intensity is obtained. The antennas are rapidly switched on and switched off by turns to obtain a plurality of signal intensity varying values when one tire state sensing device is determined to transmit the signal, and the tire corresponding to one antenna generating a maximum value in the signal intensity varying values is the position where the tire state sensing device transmitting the signal is in.
Description
Technical field
The present invention is about a kind of location (Locating) method of tire state sensor, but particularly about automatically identifying the localization method of a plurality of tire state sensors position in a kind of short time.
Background technology
The tire pressure of automobile tire deficiency, it is inconvenient that the lighter causes driving to go up, and similarly is the comparison oil consumption, and automobile is handling to be affected, and tyre last and tread life-span also reduce simultaneously.Weight person causes doughnut to blow out, and jeopardizes passenger's life security.Tire monitor system can help check vehicles the at any time situation of tire of driver in car, for example: and tire pressure, temperature etc., thereby can increase the security of vehicle effectively.
Please refer to Fig. 1, it is the structural representation of existing tire monitor system.Wherein, tire state sensor 12,14,16 and 18 is installed in respectively in four tires, antenna 22,24,26 and 28 is installed in respectively in the car main framework on the position near tire state sensor 12,14,16 and 18, and is connected to the receiver 30 (having signal receiving circuit) that is arranged in the car main framework.During operation, the status signals that tire state sensor is launched tire in turn wirelessly after antenna 22,24,26 and 28 received signals, transmits signals to receiver 30, passes through the situation of display device (not shown) driver tire again.
After receiver 30 was received signal, at first, tire monitor system must be discerned the position of the tire state sensor of this signal of emission, can inform just this signal of driver is to belong to which tire.Generally speaking, the technology of the relative position of existing identification tire state sensor and tire, it is the action of tire being exitted one by one and inflating by operating personnel, rapid decline by each tire pressure, the status signals that makes tire state sensor wherein launch tire constantly, again this signal interpretation is obtained the identiflication number of this tire state sensor, thereby set up the corresponding relation of tire state sensor and tire location.Therefore, when operation, when receiver is received a certain signal, after decoding, can obtain the identiflication number of a certain tire state sensor, by the corresponding relation of foregoing tire state sensor and tire, just can confirm to launch the tire location of this signal again.
Yet foregoing prior art can't automatically be carried out, and must just can finish by manual operation.Tire is exitted the action of inflation when quite useless one by one again, and when changing the position of new tyre or conversion tire, again the position of identification tire state sensor so prior art quite lacks efficient and time and effort consuming, can't satisfy the demands of consumers again.
Therefore, press for very much the localization method of a kind of tire state sensor of exploitation, can automatically discern the position of tire state sensor and shorten recognition time significantly, thereby use manpower and material resources sparingly effectively, satisfy the demands of consumers.
Summary of the invention
The object of the present invention is to provide a kind of localization method of tire state sensor, the position of identification tire state sensor automatically, and need not use manpower.
Another object of the present invention provides a kind of localization method of tire state sensor, can shorten the time of identification tire state sensor significantly.
According to above-mentioned purpose of the present invention, a kind of localization method of tire state sensor is proposed, can identification be installed in the position of a plurality of tire state sensors on the means of transport.
According to preferred embodiment of the present invention, the localization method of tire state sensor of the present invention comprises the following steps: to provide a plurality of antennas at least, and wherein these antenna is installed in the position near tire state sensor respectively; Enter station-keeping mode; Antenna is all started; Reception is also deciphered a signal, and wherein this signal includes an identiflication number at least, and this identiflication number is first tire state sensor that belongs to these tire state sensors, so signal is launched by first tire state sensor; Judge whether signal continues to be launched in a period of time, and produce first judged result; When first judged result for being then to obtain antenna and receive a signal intensity that is produced behind this signal jointly; Judge whether identiflication number belongs to this means of transport, and produce second judged result; When second judged result for being then to carry out the step of identification signal position.The step of identification signal position comprises the following steps: in turn switch antenna apace at least, and antenna produces a plurality of change in signal strength values after receiving this signal, and wherein the starting state of each antenna or closed condition all maintain in a period of time constantly; Compare these change in signal strength values, and obtain a maximal value; The position of first tire state sensor that transmitting of decision, institute produced when wherein this maximal value was first antenna in the switch antenna, so first tire state sensor is corresponding to first antenna.
Therefore, use the present invention, can automatically discern the position of tire state sensor, and need not use manpower; Shorten the time of identification tire state sensor significantly, and use manpower and material resources sparingly effectively, and satisfy the demands of consumers.
Description of drawings
Fig. 1 is the structural representation of existing tire monitor system.
Fig. 2 is the signal schematic representation of localization method of the tire state sensor of the embodiment of the invention.
Fig. 3 A is the schematic flow sheet of localization method of the tire state sensor of the embodiment of the invention.
Fig. 3 B is the schematic flow sheet of the identification signal position step of the embodiment of the invention.
Description of reference numerals
12,14,16,18: tire state sensor
22,24,26,28: antenna
30: receiver
70,72,74,76,78: signal curve
100: a plurality of antennas are provided
110: enter station-keeping mode
120: antenna is all started
130: receive and decoded signal
140: judge whether signal continues emission
150: obtain signal intensity
160: judge whether identiflication number belongs to this means of transport
170: the step of carrying out the identification signal position
172: switch antenna apace in turn
174: comparison signal Strength Changes value
176: the position of the tire state sensor that decision is transmitting
T0, t1, t2, t3, t4, t5: time point
Embodiment
The invention is characterized in when a definite tire state sensor is transmitting, switch antenna apace in turn, and obtain a plurality of change in signal strength values, wherein produce the position of peaked antenna in these change in signal strength values, be the pairing position of the tire state sensor that is transmitting.
The present invention can be applicable to tire monitor system as shown in Figure 1, below only uses Fig. 1 to come the localization method of simple declaration tire state sensor of the present invention.Yet the present invention is not restricted to this example, and the present invention can be applicable to have any means of transport (as automobile, locomotive etc.) of arbitrary number tire (comprising spare tyre).
See figures.1.and.2, Fig. 2 is the signal schematic representation of localization method of the tire state sensor of the embodiment of the invention, wherein tire state sensor 12,14,16 and 18 launch second time span constantly every the time of very first time length (for example: 1 minute) in turn signal (for example: 10ms).As shown in Figure 2, when time point t0, at first, find that tire state sensor transmits.Then, tire monitor system enters a station-keeping mode.At time point t0 to (abbreviating the 3rd time span as) between the time point t1, the signal that antenna 22,24,26 and 28 receives about the situation of a certain tire, this signal passed to receiver 30 after, with this signal interpretation.Because this signal includes the identiflication number of tire state sensor, thus thus identiflication number as can be known this signal be to launch from for example tire state sensor 14.Yet,, be situation about that tire so this signal can't be learnt by system because this moment, system did not know that tire state sensor 14 is to be positioned at that tire.
Then, system can judge whether this signal continues to be launched between the time point t1 at time point t0, be whether signal continues to be received device 30 and receive in during this period of time, if judged result, then obtains first signal intensity (as the signal intensity mean value of the signal curve between t0 to t1 70) that is produced by receiver 30 behind antenna 22,24,26 and 28 common these signals of reception for being.Then, judge whether foregoing identiflication number belongs to system's (promptly whether being emitted by the tire state sensor in the means of transport at system place).If identiflication number is to belong to system, then carry out the step of identification signal position.When time point t1,, open earlier apace in turn again and afterwards close each antenna, and the starting state of each antenna (for example: 0.44ms) is all kept a period of time constantly antenna 22,24,26 and 28 Close Alls.For example: behind antenna 22,24,26 and 28 Close Alls, open antenna 22, close antenna 22 and open antenna 24 at time point t2 again at time point t1; Close antenna 24 and open antenna 26 at time point t3 again; Close antenna 26 and open antenna 28 at time point t4 again; Then, all open antenna 22,24,26 and 28 at time point t5, wherein the interval of time point t1, t2, t3, t4 and t5 for example is: 0.44ms (abbreviating the 4th time span as).When taking turns switch antenna 22,24,26 and 28 apace, first signal intensity of signal curve 70 can be changed to a plurality of secondary signal intensity of signal curve 72,74,76 and 78 thereupon, after comparing first signal intensity and secondary signal intensity, obtainable a plurality of change in signal strength values (difference).
Then, these change in signal strength values relatively, and a maximal value, promptly signal curve 74, and signal curve 74 when tying up to switch antenna 24 institute produce i.e. representative antennas 24 the most close tire state sensors that transmitting.Because this tire state sensor must have foregoing identiflication number, and this identiflication number is to belong to tire state sensor 14, so system can identify the position system of tire state sensor 14 corresponding to antenna 24, promptly tire state sensor 14 is to detect antenna 24 pairing tires.
Then, after time point t5, system can receive tire state sensor 12,16 and 18 signals of being launched respectively, and after the repetition above-mentioned steps, system just can identify the position of all tire state sensing device 12,16 and 18 respectively.
What deserves to be mentioned is, the 10ms if tire state sensor transmitted constantly every 1 minute, therefore, the running time (as time point t0 to t5) of a tire state sensor of identification of the present invention must finish in 10ms.Thereby signal receiving circuit used in the present invention must go out the changing value that antenna influences signal intensity at the 10ms internal reaction.In addition, antenna wherein used in the present invention can be the antenna of same specifications and models.
In addition, the step of the identification identification signal position of the embodiment of the invention also can be when time point t1, keep antenna 22,24,26 and 28 in starting state, close earlier apace in turn again and afterwards drive each antenna, and the closed condition of each antenna (for example: 0.44ms) is all kept a period of time constantly.For example: close antenna 22 at time point t1, open antenna 22 and close antenna 24 at time point t2 again; Open antenna 24 and close antenna 26 at time point t3 again; Open antenna 26 and close antenna 28 at time point t4 again; Then, all open antenna 28 at time point t5.When closing Kaitian's line 22,24,26 and 28 apace in turn, the signal intensity of signal curve 70 can weaken thereupon, and produces secondary signal intensity respectively, and obtains a plurality of change in signal strength values (difference) between first signal intensity and secondary signal intensity.Then, relatively these change in signal strength values change maximum (reducing at most) so which to be found out, and just can learn the pairing tire of antenna that produces maximum changing value, are exactly the position of the tire state sensor that transmitting.
With reference to Fig. 3 A and Fig. 3 B, be respectively the localization method of tire state sensor of the embodiment of the invention and the schematic flow sheet of identification signal position step.As shown in Figure 3A, at first, carry out step 100 so that a plurality of antennas to be provided, wherein these antenna is installed in the position near a plurality of tire state sensors respectively, and tire state sensor then is installed in the means of transport.After tire monitor system enters station-keeping mode (step 110), antenna is all started (step 120).Then, carry out step 130 to receive and to decipher a signal, wherein this signal includes an identiflication number at least, and this identiflication number belongs to first tire state sensor in the tire state sensor, so signal is launched by first tire state sensor.Then, carry out step 140 and judge whether to continue to transmit, promptly whether this signal continued to be launched in a period of time.If the result of step 140 is for being then to obtain the signal intensity (step 150) that the common received signal of antenna (signal that receiver obtained) is then produced.Carry out step 160 and whether belong to this means of transport with the identiflication number of judging signal.If the result of step 160 is for being then to carry out the step 170 of identification signal position.If the result of step 140 or step 160 then gets back to step 130 to continue to receive and decipher a signal for not.
Shown in Fig. 3 B, in the step 170 of identification signal position, at first, each antenna (step 172) of switch apace in turn, receiver produces a plurality of change in signal strength values after receiving this signal, and wherein the starting state of each antenna or closed condition all maintain in a period of time constantly.As mentioned above, before the step 170 of carrying out the identification signal position, can open earlier apace in turn and afterwards close each antenna earlier with the antenna Close All, wherein the starting state of each antenna is all kept a period of time constantly; Perhaps, before the step of carrying out the identification signal position, still keep whole antennas in starting state, close earlier apace in turn and afterwards drive each antenna, wherein the closed condition of each antenna is all kept a period of time constantly.
Then, carry out step 174 with these change in signal strength values of comparison, and get a maximal value.Then, carry out the position of step 176 with first tire state sensor that transmitting of decision, when wherein this maximal value is first antenna in the switch antenna produce, so first tire state sensor is corresponding to first antenna, promptly first tire state sensor detects the pairing tire of first antenna.Then, repeat above-mentioned steps with one by one respectively identification identify the position of all tire state sensing device.
By the invention described above preferred embodiment as can be known, using advantage of the present invention is: can automatically discern the position of tire state sensor, shorten the identification recognition time significantly, thereby use manpower and material resources sparingly effectively, and satisfy the demands of consumers.
Though the present invention with a preferred embodiment openly as above; right its be not be used for limiting of the present invention; anyly know this operator; in not breaking away from creation thought of the present invention and scope; can do various changes and modification, thus protection scope of the present invention should with claims the person of being defined be as the criterion.
Claims (10)
1. the localization method of a tire state sensor can be discerned the position that is installed in each tire state sensor on the means of transport, and wherein the localization method of this tire state sensor comprises at least:
Provide a plurality of antennas, respectively corresponding these tire state sensors of wherein said antenna;
Start these antenna, with the signal that receives and decoding is launched from this tire state sensor, and produce one first signal intensity, wherein this signal includes an identiflication number of the tire state sensor of launching this signal at least;
Each these antenna of switch is to obtain a plurality of secondary signal intensity in turn;
Relatively thereby each the secondary signal intensity and first signal intensity obtain a plurality of change in signal strength values respectively;
Compare these change in signal strength values, thereby obtain a maximal value; And
The position of tire state sensor of this signal is being launched in decision, and wherein this maximal value is that institute produces one of in switch these antenna the time, so the tire state sensor of launching this signal is corresponding to this antenna.
2. the localization method of tire state sensor as claimed in claim 1 is characterized in that, also comprises at least:
Judge whether this signal continues to be launched in the time of the 3rd time span, and produce a judged result, wherein when this judged result for being then to obtain this first signal intensity.
3. the localization method of tire state sensor as claimed in claim 2 is characterized in that, these tire state sensors are signals of launching second time span in turn every the time remaining ground of very first time length.
4. the localization method of tire state sensor as claimed in claim 3 is characterized in that, the 3rd time span and in turn the step of each these antenna of switch running time and less than second time span.
5. the localization method of tire state sensor as claimed in claim 1 is characterized in that, also comprises at least:
Judge whether this identiflication number belongs to this means of transport, and produce a judged result, wherein when this judged result for being then to take turns each antenna of switch to obtain the step of these secondary signal intensity.
6. the localization method of tire state sensor as claimed in claim 1 is characterized in that, also comprises at least:
Enter a station-keeping mode, after wherein this station-keeping mode is set, start the step of these antenna again.
7. the localization method of tire state sensor as claimed in claim 1, it is characterized in that, before each these a few antenna of switch in turn, earlier with these antenna Close All, and then open earlier in turn and afterwards close each these a few antenna, wherein the starting state of each these antenna is all kept in the time period of the 4th time span constantly.
8. the localization method of tire state sensor as claimed in claim 1, it is characterized in that, before each antenna of switch in turn, keep these antenna in starting state, and then take turns to close earlier and afterwards drive each antenna, wherein the closed condition of each these antenna is all kept in the time period of the 4th time span constantly.
9. the localization method of tire state sensor as claimed in claim 1 is characterized in that, also comprises at least:
One signal receiving circuit is provided, reflects these change in signal strength values with this.
10. the localization method of tire state sensor as claimed in claim 1 is characterized in that, these antenna is the antenna of same specifications and models.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100797814A CN100399046C (en) | 2004-09-15 | 2004-09-15 | Positioning method for tire state sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100797814A CN100399046C (en) | 2004-09-15 | 2004-09-15 | Positioning method for tire state sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749775A CN1749775A (en) | 2006-03-22 |
| CN100399046C true CN100399046C (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100797814A Expired - Fee Related CN100399046C (en) | 2004-09-15 | 2004-09-15 | Positioning method for tire state sensor |
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| CN (1) | CN100399046C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336231A (en) * | 2010-07-20 | 2012-02-01 | 北汽福田汽车股份有限公司 | Tire pressure monitoring system (TPMS) automatic positioning method and system for vehicle |
| CN103101408A (en) * | 2011-11-11 | 2013-05-15 | 台达电子工业股份有限公司 | Tire position recognition system and method |
| CN102833854A (en) * | 2012-09-05 | 2012-12-19 | 福建星网锐捷网络有限公司 | Positioning method, device and wireless local area network |
| JP2017077794A (en) * | 2015-10-20 | 2017-04-27 | 株式会社オートネットワーク技術研究所 | Monitoring device and tire air pressure monitoring system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6034597A (en) * | 1996-08-07 | 2000-03-07 | Ami Doduco Gmbh | Process for evaluating the signals from a tire pressure monitoring system |
| US6043738A (en) * | 1998-06-26 | 2000-03-28 | Schrader-Bridgeport International, Inc. | Method and apparatus for identifying remote sending units in a vehicle |
| US6501372B2 (en) * | 2001-02-02 | 2002-12-31 | Trw Inc. | Tire condition sensor communication with unique sampling on vehicle-side diversity antenna array |
| CN1465488A (en) * | 2002-07-02 | 2004-01-07 | 敦扬科技股份有限公司 | Code learning method for tyre detector |
| CN1500662A (en) * | 2002-11-14 | 2004-06-02 | 敦扬科技股份有限公司 | Tyre pressure monitor and antenna thereof |
| US6750761B1 (en) * | 2003-02-25 | 2004-06-15 | Delphi Technologies, Inc. | Method for monitoring tire parameters |
-
2004
- 2004-09-15 CN CNB2004100797814A patent/CN100399046C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6034597A (en) * | 1996-08-07 | 2000-03-07 | Ami Doduco Gmbh | Process for evaluating the signals from a tire pressure monitoring system |
| US6043738A (en) * | 1998-06-26 | 2000-03-28 | Schrader-Bridgeport International, Inc. | Method and apparatus for identifying remote sending units in a vehicle |
| US6501372B2 (en) * | 2001-02-02 | 2002-12-31 | Trw Inc. | Tire condition sensor communication with unique sampling on vehicle-side diversity antenna array |
| CN1465488A (en) * | 2002-07-02 | 2004-01-07 | 敦扬科技股份有限公司 | Code learning method for tyre detector |
| CN1500662A (en) * | 2002-11-14 | 2004-06-02 | 敦扬科技股份有限公司 | Tyre pressure monitor and antenna thereof |
| US6750761B1 (en) * | 2003-02-25 | 2004-06-15 | Delphi Technologies, Inc. | Method for monitoring tire parameters |
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| Publication number | Publication date |
|---|---|
| CN1749775A (en) | 2006-03-22 |
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