CN103085612B - Tire low pressure alarming device and method - Google Patents
Tire low pressure alarming device and method Download PDFInfo
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- CN103085612B CN103085612B CN201110338641.4A CN201110338641A CN103085612B CN 103085612 B CN103085612 B CN 103085612B CN 201110338641 A CN201110338641 A CN 201110338641A CN 103085612 B CN103085612 B CN 103085612B
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Abstract
The invention discloses a tire low pressure alarming device and a tire low pressure alarming method. According to a scheme provided by the invention, the tire low pressure alarming device provided by the invention is characterized in comprising a plurality of pressure sensors, an ECU, and a display section. The pressure sensors are respectively arranged on every one of a plurality of tires, and are used for determining the pressure of each tire and transmitting corresponding signals of the pressures. The ECU is used for comparing the signal intensities (RF Power, RSSI) with preset standards, and is used for identifying that whether the pressure of front tires or the pressure of back tires is the pressure corresponding to the signals; if the pressure is from the front tire, the pressure is compared with a first standard pressure; and if the pressure is from the back tire, the pressure is compared with a second standard pressure, such that whether a tire corresponding to the signals is in a low-pressure state is determined. The display section is used for providing alarms that the front tire or the back tire is in a low-pressure state, under the control of the ECU according to the determination result.
Description
Technical field
The present invention relates to TPMS (Tire Pressure Monitoring System: system for monitoring pressure in tyre), more specifically, relate to and TPMS can be utilized the low pressure of tire to be produced to low pressure of tire alarm device and the method for carrying out alarm.
Background technology
Recently, system for monitoring pressure in tyre (hereinafter referred to as " TPMS ") is suitable in the car as indispensable system.
Existing TPMS, owing to being at least one tire generation low pressure in multiple tire, just produces the mode of carrying out alarm to low pressure, so in order to identify that the low pressure in multiple tire produces tire, need to confirm one by one all tire.
Still more, in recent years, automobile is not only domestic in Korea S, comprise the overseas of US and European and also carry out foundry production (OEM), with regard to Europe, require that due to the variety classes according to vehicle front and back tire is suitable for different pressure references, so also need the plan of reply.
Therefore, in the past, employing by setting up LFi (Low Frequency Initiator: low-frequency trigger) module, distinguishing the mode of the position of the TPMS sensor sending signal, but there is the problem that price significantly rises because using LFi module in this mode.
Summary of the invention
The present invention proposes under technical background as described above, its object is to, and providing a kind of can will be used for judging the base pressure of the low pressure of tire, is differently applicable to low pressure of tire alarm device and the method for front and back tire respectively.
Another object of the present invention is to, a kind of intensity that can utilize the signal corresponding with the pressure of tire is provided, distinguish low pressure of tire alarm device and method that the tire being in low-pressure state is front tire or rear tire.
Low pressure of tire alarm device involved by a scheme of the present invention, it is characterized in that, comprising: multiple pressure sensor, these pressure sensors are assemblied in each tire of multiple tire respectively, measure the pressure of each tire of above-mentioned multiple tire respectively, and send the signal corresponding with above-mentioned pressure; ECU, this ECU is by intensity (the RF Power of above-mentioned signal, RSSI) compare with the benchmark preset, identify that the pressure corresponding with above-mentioned signal is the pressure of front tire or the pressure of rear tire, if the pressure of above-mentioned front tire, then compare with the first base pressure, if the pressure of above-mentioned rear tire, then compare with the second base pressure, judge whether the tire corresponding with above-mentioned signal is low-pressure state; And display part, this display part, according to the control carried out according to judged result of above-mentioned ECU, makes above-mentioned front tire or rear tire is the alarm of low-pressure state.
The low pressure of tire alarming method of the ECU (Electronic Control Unit: electronic control unit) involved by another program of the present invention, it is characterized in that, comprise: each pressure sensor from each tire being assemblied in multiple tire, receive the step of the signal corresponding with the pressure of assembled above-mentioned tire; The intensity (RF Power, RSSI) of above-mentioned signal and the benchmark preset are compared, identifies that the pressure corresponding with above-mentioned signal is the step of the pressure of front tire or the pressure of rear tire; If the pressure corresponding with above-mentioned signal is the pressure of above-mentioned front tire, then be confirmed whether to be below the first base pressure, if the pressure corresponding with above-mentioned signal is the pressure of above-mentioned rear tire, then be confirmed whether to be below the second base pressure, judge that whether above-mentioned front tire or above-mentioned rear tire be the step of low-pressure state; And if be judged as above-mentioned low-pressure state, then make the step that above-mentioned front tire or rear tire are the alarm of low-pressure state.
According to the present invention, the intensity of the signal sent from multiple pressure sensor can be utilized, differentiation alarm be carried out to the low pressure of front tire and rear tire, thus there is the effect of the convenience that can improve tire changing.
In addition, the present invention can set up and judge that the logical gate/circuit of signal strength is easily suitable for, so compared with the existing TPMS utilizing LFi module, significantly can reduce cost in existing TPMS module.
Accompanying drawing explanation
The constructional drawing of the low pressure of tire alarm device of Fig. 1 involved by embodiments of the invention.
The figure of the display part of Fig. 2 involved by embodiments of the invention.
The diagram of circuit of the low pressure of tire alarming method of Fig. 3 involved by embodiments of the invention.
(description of reference numerals)
110: pressure sensor; 120:ECU; 130: display part.
Detailed description of the invention
Advantage of the present invention and feature, also have the method in order to realize them, as long as with reference to the embodiment described in detail together with accompanying drawing hereinafter, can obtain clear and definite.But, the present invention is not limited to following the disclosed embodiments, also can be realized by mutually different various forms, the present embodiment is just in order to full disclosure the present invention, and in order to intactly inform that category of the present invention provides to those skilled in the art, the present invention is only defined by the category of claim.On the other hand, term as used in this specification, just for illustration of various embodiment, does not limit the present invention.In this manual, if singulative is not mentioned in the text especially, then also plural form is comprised." comprising (comprises) " of using in specification sheets and/or " comprising ... (comprising) interior ", do not get rid of mentioned structural constituent, step, action and/or element and exist or set up more than one other structural constituent, step, action and/or element.
Referring now to accompanying drawing, to a preferred embodiment of the present invention will be described in detail.The constructional drawing of the low pressure of tire alarm device of Fig. 1 involved by embodiments of the invention.
As shown in Figure 1, the low pressure of tire alarm device 10 involved by embodiments of the invention comprises multiple pressure sensor 110, ECU120 and display part 130.
Multiple pressure sensor 110 is assemblied in each tire of multiple tire respectively, measures respectively the pressure of each tire of multiple tire, and sends the signal corresponding with determined pressure.
ECU120 comprises the determination unit such as circuit or logical gate (Logic) of the intensity of measured signal.
ECU120 is when receiving the signal corresponding with pressure from least one in multiple pressure sensor 110, utilize intensity (the RF Power of determination unit acknowledgment signal, RSSI), identify that the pressure corresponding with this signal is the pressure of front tire or the pressure of rear tire.
Such as, when determination unit compare rear tire be positioned at the position of tyre side closer to the front, if the intensity of signal is more than the first benchmark, then ECU120 makes the pressure corresponding with signal is the such identification of the pressure of front tire, if be less than the first benchmark, then ECU120 makes the pressure corresponding with signal is the such identification of rear tire.
On the contrary, when determination unit compare front tire be positioned at the position of more rearward tyre side, if the intensity of signal is more than the first benchmark, then ECU120 makes the pressure corresponding with signal is the such identification of rear tire, if be less than the first benchmark, then ECU120 makes the pressure corresponding with signal is the such identification of front tire.
The ECU120 pair of pressure corresponding with each signal and base pressure compare, if the pressure corresponding with each signal is below base pressure, then judge that the tire corresponding with signal is low-pressure state.
Now, if the pressure of ECU120 front tire, then compare with the first base pressure, if the pressure of rear tire, then compare with the second base pressure, thus the low-pressure state that can judge front tire and rear tire whether.Wherein, comprise the base pressure of the first and second base pressure, both can be the suitable pressure of front tire and the rear tire experimentally determined, also can determine respectively according to different types of vehicle.
ECU120, when making front tire or rear tire is the judgement of low-pressure state, is low-pressure state by display part 130 alarm front tire or rear tire.
Display part 130, according to the control of ECU120, carries out differentiation alarm to the low-pressure state of front tire or rear tire.Now, as shown in Figure 2, display part 130 can carry out alarm tire by warning light, word or icon etc. is low-pressure state.
Below, with reference to Fig. 3, the low pressure of tire alarming method involved by embodiments of the invention is described.The diagram of circuit of the low pressure of tire alarming method of Fig. 3 involved by embodiments of the invention.
With reference to Fig. 3, ECU120 from each pressure sensor 110 being assemblied in each tire, receive the signal (S310) corresponding with the pressure of each tire.
Then, ECU120 utilizes the intensity of the determination unit such as circuit or logical gate measured signal, and compares with the benchmark preset, and identifies that the pressure corresponding with signal is the pressure of front tire or the pressure (S330) of rear tire.
Such as, if the intensity of signal is more than the first benchmark, then ECU120 makes the pressure corresponding with signal is the such identification of the pressure of front tire, if be less than the first benchmark, then ECU120 makes the pressure corresponding with signal is the such identification of the pressure of rear tire.
If the pressure of ECU120 front tire, then compare with the first base pressure, if the pressure of rear tire, then compare with the second base pressure, thus judge whether front tire or rear tire are low-pressure state (S350).Wherein, base pressure can be the suitable pressure of front tire and the rear tire experimentally determined, can be different according to car type.
ECU120, when judging front tire or rear tire is low-pressure state, carries out alarm (S370) to the low-pressure state of front tire or rear tire.
Like this, the present invention can utilize the intensity of the signal sent from multiple pressure sensor, carries out differentiation alarm, have the effect of the convenience that can improve tire changing to the low pressure of front tire and rear tire.
In addition, judge that the logical gate/circuit of signal strength is easily suitable for, so compared with the existing TPMS utilizing LFi module, significantly cost can be reduced because the present invention can set up in existing TPMS module.
Above, be described in detail structure of the present invention with reference to accompanying drawing, but this just illustrates, for those skilled in the art, in the scope of technological thought of the present invention, also can make various distortion and change, this is apparent.
Namely, in the above-described embodiment, illustrate that low pressure of tire alarm device 10 only carries out distinguishing the situation of alarm to front and back tire, but as shown in the lower diagrams of Fig. 4, due to the intensity of signal sent from each pressure sensor, some differences may be there are in left and right, front tire and left and right, rear tire according to the diverse location of ECU120, so ECU120 can distinguish left and right, front tire and left and right, rear tire according to the intensity of signal, and being suitable for base pressure corresponding with it to judge the low-pressure state of tire, this is apparent.
Therefore, protection scope of the present invention is not limited to the above embodiments, but should the scope described in claim determine.
Claims (4)
1. a low pressure of tire alarm device, is characterized in that, comprising:
Multiple pressure sensor, these pressure sensors are assemblied in each tire of multiple tire respectively, measure the pressure of each tire of described multiple tire respectively, and send the signal corresponding with described pressure;
ECU, the intensity of described signal and the benchmark preset compare by this ECU, identify that the pressure corresponding with described signal is the pressure of front tire or the pressure of rear tire, if the pressure of described front tire, then compare with the first base pressure, if the pressure of described rear tire, then compare with the second base pressure, judge whether the tire corresponding with described signal is low-pressure state; And
Display part, this display part, according to the control carried out according to judged result of described ECU, makes described front tire or rear tire is the alarm of low-pressure state;
Described ECU, is suitable for described first base pressure and described second base pressure that determine by experiment according to different car type;
Described ECU is when comparing the position that described rear tire is positioned at more by described front tyre side, if the intensity of described signal is more than the first benchmark, then make the identification that the pressure corresponding with described signal is the pressure of described front tire, if the intensity of described signal is less than described first benchmark, then make the identification that the pressure corresponding with described signal is the pressure of described rear tire
Described ECU is when comparing the position that described front tire is positioned at more by described rear tire, if the intensity of described signal is more than the first benchmark, then make the identification that the pressure corresponding with described signal is the pressure of described rear tire, if the intensity of described signal is less than described first benchmark, then make the identification that the pressure corresponding with described signal is the pressure of described front tire.
2. low pressure of tire alarm device according to claim 1, is characterized in that, described ECU comprises the circuit of the intensity measuring described signal.
3. a low pressure of tire alarming method, the method is the low pressure of tire alarming method of ECU, it is characterized in that, comprises the following steps:
Each pressure sensor from each tire being assemblied in multiple tire, receives the step of the signal corresponding with the pressure of assembled described tire;
The intensity of described signal and the benchmark preset are compared, identifies that the pressure corresponding with described signal is the step of the pressure of front tire or the pressure of rear tire;
If the pressure corresponding with described signal is the pressure of described front tire, then be confirmed whether to be below the first base pressure, if the pressure corresponding with described signal is the pressure of described rear tire, then be confirmed whether to be below the second base pressure, judge that whether described front tire or described rear tire be the step of low-pressure state; And
If be judged as described low-pressure state, then make the step that described front tire or rear tire are the alarm of low-pressure state;
The step of described identification comprises:
Described ECU is when comparing the position that described rear tire is positioned at more by described front tyre side, if the intensity of described signal is more than the first benchmark, then make the identification that the pressure corresponding with described signal is the pressure of described front tire, if the intensity of described signal is less than described first benchmark, then make the step that the pressure corresponding with described signal is the identification of the pressure of described rear tire; And
Described ECU is when comparing the position that described front tire is positioned at more by described rear tire, if the intensity of described signal is more than the first benchmark, then make the identification that the pressure corresponding with described signal is the pressure of described rear tire, if the intensity of described signal is less than described first benchmark, then make the step that the pressure corresponding with described signal is the identification of the pressure of described front tire;
The step of described judgement comprises the step being suitable for described first base pressure and described second base pressure determined by experiment according to different car type.
4. low pressure of tire alarming method according to claim 3, is characterized in that, the step of described identification comprises and utilizes circuit to measure the step of the intensity of described signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338641.4A CN103085612B (en) | 2011-10-31 | 2011-10-31 | Tire low pressure alarming device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338641.4A CN103085612B (en) | 2011-10-31 | 2011-10-31 | Tire low pressure alarming device and method |
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| CN103085612A CN103085612A (en) | 2013-05-08 |
| CN103085612B true CN103085612B (en) | 2015-07-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6451588B2 (en) * | 2015-10-20 | 2019-01-16 | 株式会社オートネットワーク技術研究所 | Tire pressure monitoring system, detection device and monitoring device |
| EP3810441B1 (en) * | 2018-07-19 | 2023-12-13 | Nissan North America, Inc. | Vehicle tire pressure monitoring interface |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428540A (en) * | 2007-09-12 | 2009-05-13 | 李尔公司 | Automotive tire pressure monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6788193B2 (en) * | 2002-03-01 | 2004-09-07 | Lear Corporation | System and method for tire pressure monitoring providing automatic tire location recognition |
| US7010968B2 (en) * | 2002-04-18 | 2006-03-14 | Schrader Bridgeport International, Inc. | Determination of wheel sensor position using a wireless solution |
| US7574293B2 (en) * | 2004-02-19 | 2009-08-11 | Johnson Controls Technology Company | System and method for identifying tire position on a vehicle |
| JP4483482B2 (en) * | 2004-05-13 | 2010-06-16 | 株式会社デンソー | Position detecting device and tire air pressure detecting device having position detecting function |
| US7474214B2 (en) * | 2005-06-22 | 2009-01-06 | International Business Machines Corporation | Method and system for locating tires using RFID |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428540A (en) * | 2007-09-12 | 2009-05-13 | 李尔公司 | Automotive tire pressure monitoring system |
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