CN101417590B - Wheel identifying apparatus and tire inflation pressure detecting apparatus with function of wheel identification - Google Patents
Wheel identifying apparatus and tire inflation pressure detecting apparatus with function of wheel identification Download PDFInfo
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- CN101417590B CN101417590B CN2008101660554A CN200810166055A CN101417590B CN 101417590 B CN101417590 B CN 101417590B CN 2008101660554 A CN2008101660554 A CN 2008101660554A CN 200810166055 A CN200810166055 A CN 200810166055A CN 101417590 B CN101417590 B CN 101417590B
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Abstract
A wheel identifying apparatus according to the present invention includes a plurality of transceivers, a triggering device, a receiver, and a wheel identifier. Each of the transceivers is located on one of a plurality of wheels of a vehicle and works to receive a trigger signal and transmit a response signal in response to receipt of the trigger signal. The triggering device is located on a body of the vehicle at different distances from the transceivers and works to transmit the trigger signal. The receiver works to receive the response signals transmitted by the transceivers. The wheel identifier is operatively connected to the receiver and works to identify, for each of the response signals received by the receiver, the wheel on which the transceiver having transmitted the response signal is located using the fact that strengths of the trigger signal at the transceivers are different from each other.
Description
The application is that application number is 200610121402.2, the applying date is on July 6th, 2006, denomination of invention is divided an application for the application of " wheel identification equipment and utilize the inflation pressure of tire check implement of function of wheel identification ".
The cross reference related application
The application is based on Japanese patent application No.2005-197497 that applied on July 6th, 2005 and the Japanese patent application No.2005-198703 that applied on July 7th, 2005 and require its preceence, and its content is incorporated herein and is attached in this application.
Technical field
Present invention relates in general to a kind of inflation pressure of tire check implement that is used to detect inflation pressure of tire on the vehicle, and be used for detecting automatically the tire location detecting device of tire location on the vehicle.
Specifically, the present invention relates to a kind of direct type inflation pressure of tire check implement, it has function of wheel identification.
Background technology
Traditional direct type inflation pressure of tire check implement generally includes a plurality of transmitters and receptor.
Each transmitter all direct mount and comprises and is used for the pressure sensor that sensing is installed in the inflation pressure of tire on the wheel to one of a plurality of wheels of vehicle.Each transmitter is configured to send the pressure signal of expression by the inflation pressure of tire of pressure sensor institute sensing.
Receptor is installed on the car body, and comprises at least one antenna.Receptor is configured to receive the pressure signal that sends from transmitter by antenna, and determines the inflation pressure of tire based on the pressure signal that receives.
In scheme above, except the pressure signal that sends by transmitter, receptor can also receive the pressure signal that external sender sends.Yet receptor can not determine that the pressure signal that is received thus is is to be sent by external sender by one of this transmitter in addition.In addition, receptor also can not detect the position of transmitter on the vehicle (being tire).In other words, receptor can not be discerned the wheel that has sent the transmitter of pressure signal on it, and represents that by pressure signal the tire of its inflation pressure is positioned.
In order to address the above problem, disclosed as U.S. Patent No. 5602524, each transmitter all can be configured to the identification signal (the ID signal that vide infra) that sends its identification of expression together with pressure signal.On the other hand, receptor can be configured to have the reference ID signal that is registered in wherein, each with reference to the ID signal all with the ID aligned phase signal of a transmitter, and be associated with the position of that transmitter.
Like this, receptor can compare the reference ID signal that its ID signal and Qi Nei that receives is registered, and as ID signal and one with reference to the ID aligned phase signal time, identification has sent the transmitter of ID signal.
Therefore, receptor can be discerned the wheel of the transmitter of identification to some extent is installed on it.More specifically, this receptor can determine that this wheel is FR (off front wheel), FL (the near front wheel), RR (off hind wheel) or the RL (left rear wheel) of vehicle.In addition, receptor can be based on determining to be installed to the inflation pressure that is determined the tire on the wheel together with the received pressure signal of ID signal.
Yet according to structure above, require by the position (being the wheel of each transmitter of installation on it) with each transmitter on ID signal and the vehicle be associated in receptor registered in advance specific to the ID signal of each transmitter as reference ID signal.In addition, when implementing tire changing or rotation, require to upgrade the reference ID signal in the receptor.
Yet the registration of ID signal (registration) is a task consuming time in the receptor, so just wishes to implement automatically registered task.In addition, for automatic enforcement registered task, wishing automatically to detect the position of transmitter (or the tire that is associated), in other words, is exactly automatically to discern the wheel that each transmitter (or the tire that is associated) is set on it.
Summary of the invention
Consider problem mentioned above and propose the present invention.
Therefore, the purpose of this invention is to provide a kind of wheel identification equipment of vehicle, for each transmitter (or transceiver), it can be discerned wheel disposed thereon automatically and accurately and need not implement ID signal registered task consuming time.
Another object of the present invention provides a kind of wheel identification equipment that is used for vehicle, and for each transmitter (or transceiver), it can be discerned wheel disposed thereon automatically and accurately and not use any ID signal.
Another object of the present invention provides a kind of inflation pressure of tire check implement that is used for vehicle, and it can detect the position and the inflation pressure of tire on the vehicle automatically and accurately.
According to the present invention, a kind of wheel identification equipment is provided, comprising:
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal and sends response signal in response to receiving energizing signal.
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is arranged on the car body with the distance different with transceiver, makes the intensity of energizing signal of transceiver differ from one another;
Be used to receive the receptor of the response signal that sends by transceiver; And
Be operably connected to the wheel identifier on the receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal.
According to an embodiment of the invention, the wheel identification equipment is so disposed:
In case receive the energizing signal that flip flop equipment sends, each transceiver just determines that the intensity of energizing signal also sends the response signal of passing on signal strength information herein, and described signal strength information is represented the detected intensity of energizing signal, and
For each received response signal of receptor, the signal strength information that wheel identifier is passed on based on response signal is discerned the wheel that it is provided with the transceiver that sends response signal.
According to another implementation of the invention, the wheel identification equipment is so disposed:
In case receive the energizing signal that flip flop equipment sends, each transceiver is just determined the intensity of energizing signal herein, determine departure time and on determined departure time, send response signal according to determined energizing signal intensity,
At different time of receptions, receptor receives the response signal that is sent by transceiver, and
For each response signal that receptor receives, wheel identifier is discerned the wheel that it is provided with the transceiver that sends response signal based on the time of reception of receptor reception response signal.
According to another embodiment again of the present invention, the wheel identification equipment is so disposed:
Each transceiver all has variable receiver sensitivity, and receives the energizing signal that is sent by flip flop equipment with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all is transferred to its receiver sensitivity than low value from high value;
After energizing signal sent, flip flop equipment further sent the inspection signal;
Each transceiver is all determined its reception behavior in lower receiver sensitivity value acceptace inspection signal;
Each transceiver all sends and transmits the response signal that receives behavioural information, and described reception behavioural information is represented determined reception behavior; And
Concerning each response signal that receptor receives, wheel identifier is discerned the wheel that it is provided with the transceiver that sends response signal based on the reception behavioural information that is transmitted by response signal.
According to another embodiment more of the present invention, the wheel identification equipment is so disposed:
Each transceiver all has variable receiver sensitivity, and receives energizing signal by flip flop equipment was sent with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value from high value;
After energizing signal sent, flip flop equipment further sent the inspection signal;
Each transceiver is all determined its reception behavior in lower receiver sensitivity value acceptace inspection signal;
Each transceiver is all determined departure time according to determined reception behavior, and sends response signal at determined departure time;
At different time of receptions, receptor receives the response signal by transceiver sent; And
For each response signal that receptor receives, wheel identifier receives the time of reception of response signal based on receptor, discerns the wheel that it is provided with the transceiver that sends response signal.
In addition, according to the present invention, provide a kind of inflation pressure of tire check implement, it comprises:
Be separately positioned on first and second pressure sensors on first and second wheels of vehicle, the inflation pressure of a tire that is associated on each pressure sensor all is used for sensing and is installed to first and second wheels, and the tire pressure information of the inflation pressure of tire that is associated that senses of output expression;
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal and sends response signal in response to receiving energizing signal, and this response message is passed on the tire pressure information of being exported by one of first and second pressure sensors that are associated;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is arranged on the car body of vehicle with the different distance of distance transceiver, makes that the energizing signal intensity on transceiver differs from one another;
Be used to receive the receptor of the response signal that sends by transceiver;
Be operably connected to the wheel identifier on the receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal; And
Be operably connected to the tire pressure detector on receptor and the wheel identifier, for each received response signal of receptor, the tire pressure information that tire pressure detector is passed on based on response signal is determined the inflation pressure of tire, and this tire is set on the identical wheel with the transceiver that sends response signal.
According to an embodiment of the invention, the inflation pressure of tire check implement is so disposed:
In case receive the energizing signal that flip flop equipment sends, each transceiver is just determined the intensity of energizing signal herein, and sends the response signal of passing on signal strength information and tire pressure information, and described signal strength information is represented the energizing signal detected intensity; And
For each response signal that receptor receives, the signal strength information that wheel identifier is passed on based on response signal is discerned its wheel that is provided with the transceiver that sends response signal.
According to another implementation of the invention, the inflation pressure of tire check implement is so disposed:
In case receive the energizing signal that flip flop equipment sends, each transceiver just detects the intensity of energizing signal herein, determines departure time according to the intensity of determined energizing signal, and send response signal at determined departure time;
At different time of receptions, receptor receives the response signal that is sent by transceiver; And
For each response signal that receptor receives, wheel identifier receives the time of reception of response signal based on receptor, discerns the wheel that it is provided with the transceiver that sends response signal.
According to another embodiment again of the present invention, the inflation pressure of tire check implement is so disposed:
Each transceiver all has variable receiver sensitivity, and receives the energizing signal that is sent by flip flop equipment with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all changes its receiver sensitivity by the high value to low value;
After flop signal sent, flip flop equipment further sent the inspection signal;
Each transceiver is all determined its reception behavior in lower receiver sensitivity value acceptace inspection signal;
Each transceiver all sends response signal, and this response signal is passed on and received behavioural information and tire pressure information, and this reception behavioural information is represented determined reception behavior; And
For each response signal that receptor received, wheel identifier is discerned the wheel that it is provided with the transceiver that sends response signal based on the reception behavioural information that response signal transmitted.
According to another embodiment more of the present invention, the inflation pressure of tire check implement is so disposed:
Each transceiver all has variable receiver sensitivity, and receives the energizing signal that flip flop equipment was sent with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value by high value;
After energizing signal sent, flip flop equipment further sent the inspection signal;
Each transceiver is determined its reception behavior in lower receiver sensitivity value acceptace inspection signal;
Each transceiver is all determined departure time according to determined reception behavior, and sends response signal at determined departure time;
At different time of receptions, receptor receives the response signal that is sent by transceiver; And
For each response signal that receptor receives, wheel identifier receives the time of reception of response signal based on receptor, discerns the wheel that it is provided with the transceiver that sends response signal.
Therefore, by providing above wheel identification equipment and inflation pressure of tire check implement to realize purpose of the present invention.
Description of drawings
From the detailed description that hereinafter provides and the accompanying drawing of the preferred embodiment of the present invention, will more fully understand the present invention.Yet this is not to limit the invention to specific embodiments, and only is the purpose in order to explain and to understand.
In the accompanying drawings:
Fig. 1 shows the integrally-built scheme drawing according to the inflation pressure of tire check implement of first embodiment of the invention;
Fig. 2 A shows the functional block diagram of each transceiver configuration of inflation pressure of tire check implement among Fig. 1;
Fig. 2 B shows the functional block diagram of the receiver architecture of inflation pressure of tire check implement among Fig. 1;
Fig. 3 illustrates that in clearance envelope energizing signal intensity is with the graphic representation of the attenuation characteristic of the distance of the flip flop equipment of distance transmission energizing signal;
Fig. 4 is the application of Fig. 3 to inflation pressure of tire check implement among Fig. 1;
Fig. 5 is the scheme drawing of the tire identifying example of inflation pressure of tire check implement in the instruction diagram 1;
Fig. 6 is the energizing signal of inflation pressure of tire check implement in the instruction diagram 1 and the timer-operated sequential chart of transmission of frame;
Fig. 7 is Fig. 3 to the application according to the inflation pressure of tire check implement of second embodiment of the invention;
Fig. 8 is the scheme drawing of explanation according to the example of the wheel recognition methods of the inflation pressure of tire check implement of second embodiment of the invention;
Fig. 9 shows the integrally-built scheme drawing according to the inflation pressure of tire check implement of third embodiment of the invention;
Figure 10 A is the application of Fig. 3 to inflation pressure of tire check implement among Fig. 9;
Figure 10 B is the Another Application of Fig. 3 to inflation pressure of tire check implement among Fig. 9;
Figure 11 is the scheme drawing of the wheel recognition methods example of inflation pressure of tire check implement in the instruction diagram 9;
Figure 12 shows the integrally-built scheme drawing according to the inflation pressure of tire check implement of fifth embodiment of the invention;
Figure 13 A shows the functional block diagram of each transceiver configuration of inflation pressure of tire check implement among Figure 12;
Figure 13 B shows the functional block diagram of the receiver architecture of inflation pressure of tire check implement among Figure 12;
Figure 14 shows the diagram of circuit of the process of the receptor of inflation pressure of tire check implement among Figure 12;
Figure 15 shows the diagram of circuit of the process of each transceiver of inflation pressure of tire check implement among Figure 12;
Figure 16 has illustrated the sequential chart of the wheel identifying of inflation pressure of tire check implement among Figure 12;
Figure 17 shows the functional block diagram according to each transceiver configuration of the inflation pressure of tire check implement of sixth embodiment of the invention;
Figure 18 shows the diagram of circuit according to the receptor process of the inflation pressure of tire check implement of sixth embodiment of the invention;
Figure 19 shows the diagram of circuit according to the process of each transceiver of the inflation pressure of tire check implement of sixth embodiment of the invention;
Figure 20 has illustrated the sequential chart according to the wheel identifying of the inflation pressure of tire check implement of sixth embodiment of the invention.
The specific embodiment
Hereinafter 1-20 describes the preferred embodiments of the present invention with reference to the accompanying drawings.
To notice: for cause clear and that understand, the recognition component that has recognition function in different embodiments of the invention can be all with identical designated in each accompanying drawing at this.
[first embodiment]
Fig. 1 shows the integral structure according to the inflation pressure of tire check implement S1 of first embodiment of the invention.
Inflation pressure of tire check implement S1 is installed on the vehicle 1, and being configured to detect the inflation pressure of four tires, each of these four tires all is installed to one of four wheel 6a-6d of vehicle 1 and goes up (being off front wheel 6a, the near front wheel 6b, off hind wheel 6c and left rear wheel 6d).
As shown in fig. 1, inflation pressure of tire check implement S1 comprises four transceivers 2, receptor 3, a warning device 4 and a flip flop equipment 5.
Each transceiver 2 all is installed on one of four wheel 6a-6d, so that be associated with tire on one of wheel 6a-6d.
Each transceiver 2 all is used for the be associated inflation pressure of tire of sensing, and sends the frame that comprises tire pressure information, the inflation pressure of tire that is associated that described tire pressure information representation senses.
With reference to Fig. 2 A, each transceiver 2 all disposes sensing cell 21, microcomputer 22, battery 23, transmitting antenna 24 and receiving wire 25.
Sensing cell 21 disposes sensor, as diaphragm type pressure sensor and temperature sensor, and is used for exporting the signal of representing inflation pressure of tire that senses and the tire temperature that senses.
In addition, control unit 22a is used for receiving the energizing signal that flip flop equipment 5 sends by receiving wire 25 and receiving element 22c, and determines the intensity of the energizing signal that receives by its signal conditioning.Control unit 22a also be used for frame or another frame storage representation the signal strength information of definite intensity.
In addition, control unit 22a is used for transmitting element 22b transmission frame is controlled.
Transmitting element 22b is used for being sent to receptor 3 by the frame that transmitting antenna 24 is provided control unit 22a.
Receiving element 22c is used for receiving the energizing signal that flip flop equipment 5 is sent by receiving wire 25, and the energizing signal that receives is provided to control unit 22a.
Each above-described transceiver 2 one of all is fixed among the wheel 6a-6d with vehicle 1 on the air valve that is associated, and its at least one sensing cell 21 is placed within the tire on the wheel, so that be exposed to the air in the tire.
On the other hand, receptor 3 is installed on the car body 7 of vehicle 1.Receptor 3 is used to receive all frames that sent by transceiver 2, and determines the inflation pressure of four tires based on the tire pressure information in the frame that receives of being included in.For each frame that receives, receptor 3 also is used to discern the wheel that the transceiver 2 that has sent frame is installed on it.
With reference to Fig. 2 B, receptor 3 disposes receiving wire 31 and microcomputer 32.
As shown in fig. 1, receiving wire 31 is fixed in the car body 7 of vehicle 1, to receive all frames that four transceivers 2 are sent.
Receiving element 32a is used for receiving all frames that sent by transceiver 2 by receiving wire 31, and received frame is provided to control unit 32b.
For each frame that receives from receiving element 32a, control unit 32b determines to be arranged on the transceiver 2 that sends frame the inflation pressure of the tire on the same wheel further based on the tire pressure information that is included in the frame.
Like this, can determine in four tires each inflation pressure and position by control unit 32b.When any one inflation pressure in determined four tires is decreased to when being lower than predetermined threshold Th, control setup 32b is the inflation pressure that reduced of output expression and the alerting signal of tire location just.
As shown in fig. 1, warning device 4 is electrically connected on the receptor 3 and is arranged on the chaufeur appreciiable position of vehicle 1.For example, warning device 4 disposes attention display on the instrument carrier panel of vehicle 1.The alerting signal that response receives from receptor 3, warning device 4 are used to inform inflation pressure and the tire location that chaufeur has reduced.
The command signal that response receives from receptor 3, flip flop equipment 5 are used for sending energizing signal with predetermined strength.Flip flop equipment 5 is arranged on the car body 7 of vehicle 1 with the different distance of distance wheel 6a-6d, makes the intensity of energizing signal of transceiver 2 differ from one another.For example, in this embodiment, as shown in fig. 1, flip flop equipment 5 be provided with next-door neighbour vehicle 1 left rear wheel 6d.Like this, the distance from flip flop equipment 5 to wheel 6a-6d increases with the order of left rear wheel 6d, off hind wheel 6c, the near front wheel 6b and off front wheel 6a.
In addition, flip flop equipment 5 is arranged on such position makes that it is preferred not having metal assembly to cover flip flop equipment 5, and might in the process that vehicle 1 travels, place flip flop equipment 5 and do not suffer external substance such as water and stone.In addition, flip flop equipment 5 is provided with such position and makes that it is preferred differing greatly in flip flop equipment 5 to the distance of wheel 6a-6d.For example, flip flop equipment 5 can be arranged on the front side of rear side or off front wheel 6a and the near front wheel 6b of off hind wheel 6c and left rear wheel 6d.
After the integral structure of describing inflation pressure of tire check implement S1, hereinafter its operation will be described.
According to present embodiment, inflation pressure of tire check implement S1 has two kinds of different operational modes.First kind of pattern is " ID registration mode ", and second kind of pattern is " tire pressure detecting pattern ".Inflation pressure of tire check implement S1 is configured at first move under the ID registration mode then enter the tire pressure detecting pattern.
Particularly, when the ignition lock (not shown) of vehicle 1 went to unlatching from closing, receptor 3 and flip flop equipment 5 so just entered the ID registration mode by the battery (not shown) supply of electrical energy on the vehicle 1.
Then, the control unit 32b output instruction signal of receptor 3 is to flip flop equipment 5.In response to receiving command signal, flip flop equipment 5 sends has the energizing signal of predetermined strength to each transceiver 2.
In case receive energizing signal by receiving wire 25 and receiving element 22c, the control unit 22a of each transceiver 2 just is activated to detect the intensity of energizing signal.
The intensity of energizing signal is along with this point that decays is to understand easily with the increase of flip flop equipment 5 distances.Fig. 3 has illustrated in clearance envelope along with the distance from the flip flop equipment that sends energizing signal increases the attenuation characteristic of energizing signal intensity.The application of 3 pairs of inflation pressure of tire check implements of Fig. 4 instruction diagram S1.
As indicated above particularly, flip flop equipment 5 to the distance of the wheel 6a-6d order with left rear wheel 6d, off hind wheel 6c, the near front wheel 6b and off front wheel 6a increases.The energizing signal intensity at transceiver 2 places that are associated thus, reduces with the order of left rear wheel 6d, off hind wheel 6c, the near front wheel 6b and off front wheel 6a.
After the intensity of definite energizing signal herein, the id information of the signal strength information of the determined energizing signal intensity of control unit 22a storage representation in frame of each transceiver 2 and expression identification transceiver 2.Then, control unit 22a sets wait time and controls transmitting element 22b and sending frame from receiving energizing signal through after the wait time.
In addition, wait time can arbitrarily be provided with, so that allow all transceivers 2 at different time transmission frames separately, to avoid the interference of the frame on receptor 3.
In case receive all frames that transceiver 2 is sent, the control unit 32b of receptor 3 just obtains signal strength information and the id information that is included in the frame.Then, control unit 32b is with the frame that sorted by the order of successively decreasing that is included in the represented energizing signal intensity of signal strength information in the frame.
By described ordering, the transceiver 2 that control unit 32b will send the frame that comprises the signal strength information of representing maximum strength is identified as and is installed on the left rear wheel 6d; The transceiver 2 that sends the frame of the signal strength information that comprises expression time intensity is identified as being installed on the off hind wheel 6c; The transceiver 2 that sends the frame that comprises the signal strength information of representing the 3rd intensity is identified as is installed on the near front wheel 6b; And the transceiver 2 that will send the frame that comprises the signal strength information of representing minimum strength is identified as and is installed on the off hind wheel.
More specifically, with reference to accompanying drawing 5, wherein four transceivers 2 represent with their mark A, B, C and D that respectively the intensity of the energizing signal at transceiver A-D place differs from one another.For example, the intensity of the energizing signal of transceiver A-D is respectively 10,55,34 and 20.
With further reference to accompanying drawing 6, concerning the transmission of frame, wait time can be provided with to such an extent that be inversely proportional to the intensity of energizing signal.For example, can the longest wait time be set to the transceiver A of energizing signal intensity minimum, so that transceiver A sends frame at last.Therefore, at different time transceiver A-D transmission frames separately, avoid the interference of frame on the receptor 3 like this.
In case receive the frame that transceiver A-D sends, the control unit 32b of receptor 3 obtains the order of B, C, D and A so just with the serial arrangement transceiver A-D that successively decreases (in other words, arranging frame separately) of energizing signal intensity.
By ordering, for each transceiver A-D, control unit 32b discerns the wheel that transceiver is installed on it.Therefore, transceiver B is identified as is installed on the left rear wheel 6d, transceiver C is identified as is installed on the off hind wheel 6c, transceiver D is identified as is installed on the near front wheel 6b, and transceiver A is identified as is installed on the off front wheel 6a.
After wheel identification, the control unit 32b of receptor 3 registration packet in its memory device is contained in the id information in the frame that receives, as the reference id information that is associated with each wheel of discerning.
Then, the operation of inflation pressure of tire check implement S1 converts the tire pressure detecting pattern to from the ID registration mode.
In the tire pressure detecting pattern, the control unit 22a of each transceiver 2 receives from the signal of sensing cell 21 outputs, and handles these signals.Then, control unit 22a in frame storage representation by the tire pressure information of the inflation pressure of tire that is associated of 21 sensings of sensing cell, and the id information of sign of expression transceiver 2.In addition, control unit 22a control transmission unit 22b repeats to send frame with predetermined time interval (as 1 minute).
The control unit 32b of receptor 3 receives all frames that sent by transceiver 2 by receiving wire 31 and receiving element 32a.
Then, for each frame that receives, control unit 32b discerns the wheel that the transceiver 2 that has sent frame is installed on it by relatively being included in the id information in this frame and being registered in the memory device all with reference to id information.
In addition, for each frame that receives, control unit 32b detects the inflation pressure that is arranged on the tire on the same wheel with the transceiver 2 that sends frame based on the tire pressure information that is included in the frame.
In addition, each frame that transceiver 2 is sent can comprise the be associated tyre temperature information of air themperature in the tire of expression, so that if desired, the control unit 32b of receptor 3 can come detected inflation pressure of tire is implemented temperature compensating based on the temperature information that is included in each frame that receives.
Therefore, determine each inflation pressure and position of four tires by control unit 32b.Any one inflation pressure of determining reduces in four tires, and when consequently being lower than predetermined threshold Th, by warning device 4, control unit 32b informs inflation pressure and the tire location that chaufeur descends.
When the ignition lock of vehicle 1 forwarded the pass to from opening, the control setup 32b of receptor 3 sent command signal once more, made flip flop equipment 5 send energizing signal.In case receive energizing signal by receiving wire 25 and receiving element 22c, the control unit 22a of each transceiver 2 has finished the whole operation of inflation pressure of tire check implement S1 so just by deexcitation.
S1 has the following advantages according to the above-described inflation pressure of tire check implement of this embodiment.
In inflation pressure of tire check implement S1, flip flop equipment 5 is placed on the car body 7 of vehicle 1 with the distance different with wheel 6a-6d, makes the intensity of the energizing signal on the transceiver 2 differ from one another like this; Each transceiver 2 all sends the frame that comprises the signal strength information of energizing signal intensity on the expression transceiver 2; For each frame that receives from transceiver 2, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the signal strength information that is included in the frame.
With structure above, can accurately determine the position of transceiver 2 on the vehicle 1 for receptor 3.
Thus, with structure above, for inflation pressure of tire check implement S1, can detect the position and the inflation pressure of tire on the vehicle 1 automatically and accurately.
In addition, with structure above, for inflation pressure of tire check implement S1, can implement the id information registered task automatically reliably.
In addition, can have identical structure, and can only comprise single receive antenna 31, so just reduce the manufacturing cost of inflation pressure of tire check implement S1 for receptor 3 for all transceivers 2.
In addition, in this embodiment, inflation pressure of tire check implement S1 is configured to move two kinds of different modes, and promptly ID registration mode and tire pressure detecting pattern are operated.
Yet, inflation pressure of tire check implement S1 can also be configured to only operate with single-mode, wherein: on the preset time interval, each transceiver 2 sends repeatedly and comprises the be associated tire pressure information of inflation pressure of tire of expression, and the frame of the signal strength information of energizing signal intensity on the expression transceiver 2; For each frame that receives from transceiver 2, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the signal strength information that is included in the frame; For each frame that receives from transceiver 2, receptor 3 also further based on being included in tire pressure information in the frame, determines to be arranged on the transceiver 2 that sends frame the inflation pressure of the tire on the same wheel.
With the structure of this modification, do not use any id information just can detect the position of tire on the vehicle 1 and the inflation pressure of tire automatically and accurately.
[second embodiment]
This embodiment has illustrated a kind of inflation pressure of tire check implement S2, its have almost with according in the identical structure of the inflation pressure of tire check implement S1 of preceding embodiment.Therefore, hereinafter both differences will only be described.
In preceding embodiment, each of four transceivers 2 all receives the energizing signal that is sent by flip flop equipment 5, and sends the frame that includes the signal strength information of energizing signal intensity on the expression transceiver 2; For from each received frame of four transceivers 2, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the signal strength information that is included in the frame.
Relatively, in the present embodiment, flip flop equipment 5 is exported energizing signal with the intensity that limits, so that one of four transceivers 2 can not receive energizing signal.
Particularly, at some in particular cases, limited the output intensity of energizing signal owing to regulation.Therefore, as shown in Figure 7, the intensity of the energizing signal of the transceiver 2 on off front wheel 6a becomes and is lower than the lower limit of intensity, and transceiver 2 can not detect energizing signal under lower limit.
Other three transceivers 2 can receive energizing signal to move with mode identical in preceding embodiment.
For example, with reference to Fig. 8, the intensity of the energizing signal of three transceiver B-C is respectively 55,34 and 20.
In the ID registration mode, each of three transceivers 2 all sends the signal strength information that comprises energizing signal intensity on the expression transceiver 2 and represents the frame of the id information of transceiver 2 signs.
In case receive the frame that transceiver B-D is sent, just with the serial arrangement transceiver B-D (in other words, ordering frame separately) of energizing signal strength decrease, the order that obtains like this is B, C and D to the control unit 32b of receptor 3.
By described ordering, for each transceiver B-D, control unit 32b discerns the wheel that transceiver is installed on it.Therefore, transceiver B is identified as is installed on the left rear wheel 6d, transceiver C identification is installed on the off hind wheel 6c, and transceiver D is identified as is installed on the near front wheel 6b.
After wheel identification, the id information of the control unit 32b of receptor 3 storage representation sign B-D in its memory device is as the reference id information that is associated with institute's identification wheel 6b-6d separately.
In the tire pressure detecting pattern, after the frame that all transceivers 2 of receiving for the first time send, for one of frame that includes the unregistered id information of representing sign A, the control unit 32b of receptor 3 further is identified as off front wheel 6a with the wheel that the transceiver 2 that has sent frame is installed on it.In other words, control unit 32b is identified as transceiver A and is installed on the off front wheel 6a.
Then, the id information of the control unit 32b of the receptor 3 expression sign A that will register in its memory device is identified as the reference id information that is associated with off front wheel 6a.
All the other operations of inflation pressure of tire check implement S2 are identical in the operation of the inflation pressure of tire check implement S1 of preceding embodiment with basis; Therefore, the descriptions thereof are omitted at this.
According to the inflation pressure of tire check implement S2 of present embodiment have with according in the identical advantage of the inflation pressure of tire check implement S1 of preceding embodiment.In addition, inflation pressure of tire check implement S2 has additional advantage, promptly even when the output intensity of energizing signal is confined, can determine the position of the position of transceiver 2 and the tire that is associated exactly.
In addition, in this embodiment, cannot be for receptor 3 by the transceiver 2 on activation trigger signal and the deexcitation off front wheel 6a.Then, other method can be used for replacing, and is configured to comprise as transceiver 2 be used for the be associated motion sensor of tyre rotation of sensing, and comes self-activation and from deexcitation based on the rotation of sensing.
[the 3rd embodiment]
This embodiment has illustrated a kind of inflation pressure of tire check implement S3, its have almost with according to the identical structure of the inflation pressure of tire check implement S1 of first embodiment.Therefore, hereinafter both differences will only be described.
In first embodiment, in tire inflation pressure determining apparatus S1, only be provided with single flip flop equipment 5.In addition, the energizing signal of flip flop equipment 5 transmissions is received by all transceivers 2.
With reference to Fig. 9 relatively, in tire inflation pressure determining apparatus S3, be provided with two flip flop equipment 5a and 5b.In addition, the energizing signal that each flip flop equipment 5a and 5b sent is all only received by three transceivers 2.
Particularly as shown in Figure 9, flip flop equipment 5a be provided with next-door neighbour left rear wheel 6d, simultaneously flip flop equipment 5b be provided with next-door neighbour's the near front wheel 6b.Therefore, flip flop equipment 5a and 5b are arranged on the left side of the longitudinal centerline C-C of vehicle 1 with the different distance of distance wheel 6a-6d.
With arrangement above, in the ID registration mode, the control unit 32b of receptor 3 at first on one of output instruction signal to two flip flop equipment, as flip flop equipment 5a, so just makes flip flop equipment 5a send energizing signal.
With identical among first embodiment, the intensity of the energizing signal that flip flop equipment 5a is sent on transceiver 2 differs from one another.Particularly, the energizing signal intensity that is sent by the flip flop equipment 5a that is respectively installed to receptor 2 places on the wheel 6a-6d reduces with the order of left rear wheel 6d, off hind wheel 6c, the near front wheel 6b and off front wheel 6a.
Like this as shown in Figure 10 A, when energizing signal with as second embodiment in limited strength when exporting by flip flop equipment 5a, the intensity of the energizing signal at last transceiver 2 places of off front wheel 6a becomes and is lower than the lower limit of intensity, makes that the transceiver 2 on the off front wheel 6a can not detect energizing signal.
In addition, because flip flop equipment 5a is very little apart from the difference between the distance of off hind wheel 6c and the near front wheel 6b, the intensity difference between the energizing signal at transceiver 2 places on wheel 6c and the wheel 6b is also very little thus.Therefore, in some actual conditions,, be difficult to distinguish the frame that the transceiver 2 on wheel 6c and the wheel 6b receives based on the intensity of energizing signal at this for the control unit 32b of receptor 3.
Consider above, in the present embodiment, another in the further output instruction signal to two of the control unit 32b flip flop equipment of receptor 3, promptly flip flop equipment 5b makes flip flop equipment 5b send energizing signal like this.
The energizing signal situation that sends with flip flop equipment 5a is similar, and the intensity of the energizing signal that sends at the transceiver 2 flip flop equipment 5b of place differs from one another.Particularly, the intensity that is respectively installed to the energizing signal that the flip flop equipment 5b at transceiver 2 places on the wheel 6a-6d sent reduces with the order of the near front wheel 6b, off front wheel 6a, left rear wheel 6d and off hind wheel 6c.
Like this as shown in Figure 10 B, when flip flop equipment 5b exports energizing signal with the intensity that limits, the intensity of the energizing signal at transceiver 2 places becomes less than the lower limit of intensity on off hind wheel 6c, so the transceiver 2 on off hind wheel 6c can not detect energizing signal.
In addition, because flip flop equipment 5b is very little to the difference between the distance of off front wheel 6a and left rear wheel 6d, the difference between the energizing signal intensity at transceiver 2 places on wheel 6a and the wheel 6d is also very little thus.Therefore, under some actual situations, for the control unit 32b of receptor 3, may be difficult to intensity, distinguish the received frame of transceiver 2 on wheel 6a and the wheel 6d based on the energizing signal that sends at this flip flop equipment 5b.
Thus, in the present embodiment, the control unit 32b of receptor 3 discerns the position of transceiver 2 in three phases.
Particularly, in F/s, control unit 32b receives the frame that is sent by the transceiver on wheel 6d, 6c and the 6b 2 in response to the energizing signal that receives flip flop equipment 5a transmission.Then, the transceiver 2 that control unit 32b will send the frame that includes the signal strength information of representing maximum strength is identified as and is installed on the left rear wheel 6d, and other two transceivers 2 are identified as are installed on off hind wheel 6c and the near front wheel 6b.
In second stage, control unit 32b receives the frame that is sent by the transceiver on wheel 6b, 6a and the 6d 2 in response to the energizing signal that receives flip flop equipment 5b transmission.Then, the transceiver 2 that control unit 32b will send the frame that comprises the signal strength information of representing maximum strength is identified as and is installed on the near front wheel 6b, and other two transceivers 2 are identified as are installed on off front wheel 6a or the left rear wheel 6d.
In the phase III, control unit 32b discerns all the other Unidentified transceivers 2.Particularly, in F/s, be identified as be installed on off hind wheel 6c or the near front wheel 6b two transceivers 2 in, since they one of in subordinate phase, be identified as and be installed on the near front wheel 6b, thereby another just is identified as and is installed on the off hind wheel 6c.Similarly, in in subordinate phase, being identified as two transceivers 2 that are installed on off front wheel 6a or the near front wheel 6d, since they one of in F/s, be identified as and be installed on the left rear wheel 6d, thereby another is identified as and is installed on the off front wheel 6a.
Therefore, the position of all transceivers 2 on the vehicle 1 is all discerned by the control unit 32b of receptor 3.
Figure 11 has illustrated the example of above-described wheel recognition methods, and wherein transceiver 2 is specified by their sign A-D.
As shown in Figure 11, the energizing signal that flip flop equipment 5a is sent is received by three transceiver C, D and A, and the intensity of energizing signal is respectively 55,10 and 11 herein.
Thus, in the F/s of wheel identifying, it is that 55 transceiver C is identified as and is installed on the left rear wheel 6d that the control unit 32b of receptor 3 will have maximum strength, and other two transceiver D and A be identified as be installed on off hind wheel 6c or the near front wheel 6b.
In addition, three transceiver A, B and C receive the energizing signal that flip flop equipment 5b sends, and the intensity of energizing signal is respectively 55,10 and 13 herein.
Thus, in the subordinate phase of wheel identifying, it is that 55 transceiver A is identified as and is installed on the near front wheel 6b that the control unit 32b of receptor 3 will have maximum strength, and other two transceiver B and C be identified as be installed on the near front wheel 6a or the left rear wheel 6d.
In the phase III of wheel identifying, the control setup 32b of receptor 3 is identified as transceiver D and is installed on the off hind wheel 6c, and transceiver B is identified as is installed on the off front wheel 6a.
Have and the identical advantage of inflation pressure of tire check implement S1 according to the inflation pressure of tire check implement S3 of present embodiment according to first embodiment.In addition, inflation pressure of tire check implement S3 has additional advantage, and promptly even when the output intensity of energizing signal is restricted, it can accurately determine the position of transceiver 2 and the position of the tire that is associated.
In addition, in the present embodiment, suppose that the energizing signal that each flip flop equipment 5a and 5b are sent only can be received by three transceivers 2.Yet even under the situation that energizing signal only can be received by two transceivers 2, receptor 3 still has possible accuracy, easily determines the position of transceiver 2.When flip flop equipment 5a and 5b send separately energizing signal with bigger limited strength, or each transceiver 2 just this situation may occur when all having lower receiver sensitivity value.
[the 4th embodiment]
This embodiment has illustrated a kind of inflation pressure of tire check implement S4, has almost and the same structure of inflation pressure of tire check implement S1 according to first embodiment.Therefore, between the two difference hereinafter will only be described.
In first embodiment, each transceiver 2 all receives the energizing signal that flip flop equipment 5 sends, and sends the frame of the signal strength information that comprises expression transceiver 2 place's energizing signal intensity; For each frame that receives from transceiver 2, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the signal strength information that is included in the frame.
Comparatively speaking, in the present embodiment, transceiver 2 receives the energizing signal that flip flop equipments 5 are sent, and sends separately frame according to the intensity of energizing signal herein at different departures time; Receptor 3 receives the frame that sends from transceiver 2 at different time of receptions like this, and for each frame that receives, discerns the wheel that the transceiver 2 that has sent frame is installed on it based on the time of reception of received frame.
Particularly, in case receive energizing signal by receiving wire 25 and receiving element 22c, the control unit 22a that activates each transceiver 2 just determines the intensity of energizing signal herein.
Then, control unit 22a determines departure time according to the intensity of determined energizing signal.For example, can utilize in the memory device that is stored in control unit 22a and represent the predetermined relationship between energizing signal intensity and the departure time or come the mapping table of computing machine to determine departure time as the function of energizing signal intensity.
Because the intensity of the energizing signal at transceiver 2 places differs from one another, thereby is also differed from one another by the determined departure time of control unit 22a of transceiver 2.
Assembling comprises after the frame of id information, and the control unit 22a of each transceiver 2 sends frame at determined departure time.
Like this, receptor 3 receives all frames that sent by transceiver 2 at different time of receptions.
Then, for each frame that receives, the control unit 32b of receptor 3 discerns the wheel that the transceiver 2 that has sent frame is installed on it based on the time of reception that receives frame.
For example, the frame that control unit 32b can sort and receive according to the order of the time of reception that receives frame, then be complementary to determine to have sent the position of the transceiver 2 of frame by the order with the order of described frame and wheel 6a-6d, the order of wheel 6a-6d is to obtain according to the distance from flip flop equipment 5 to wheel 6a-6d.Otherwise, control unit 32b can be stored in same map table or the identical function that is stored in the transceiver 2 in its memory device, determine the intensity of transceiver 2 energizing signal inversely based on the time of reception that receives frame separately from transceiver 2, and based on the position of determining transceiver 2 in the intensity of this energizing signal of determining.
All the other operations of inflation pressure of tire check implement S4 are identical with the operation according to the inflation pressure of tire check implement S1 of first embodiment; Therefore, the descriptions thereof are omitted at this.
Have and the identical advantage of inflation pressure of tire check implement S1 according to the inflation pressure of tire check implement S4 of present embodiment according to first embodiment.
[the 5th embodiment]
Figure 12 shows the integral structure according to the inflation pressure of tire check implement S5 of fifth embodiment of the invention.In the drawings, inflation pressure detecting apparatus S5 is installed on the vehicle 1, and is configured to detect the inflation pressure of four tires on four the wheel 6a-6d (being off front wheel 6a, the near front wheel 6b, off hind wheel 6c and left rear wheel 6d) that are respectively installed to vehicle 1.
As shown in Figure 12, inflation pressure of tire check implement S5 comprises four transceivers 2, receptor 3, warning device 4 and two flip flop equipment 5a, 5b.
Each transceiver 2 all is installed on one of four wheel 6a-6d so that with wheel 6a-6d in one of on tire be associated.
Each transceiver 2 all is used for the be associated inflation pressure of tire of sensing, and sends the frame of the tire pressure information of the inflation pressure that comprises the tire that is associated that expression senses.
With reference to accompanying drawing 13A, each transceiver 2 all disposes sensing cell 21, microcomputer 22, battery 23, transmitting antenna 24 and receiving wire 25.
Sensing cell 21 disposes sensor, as diaphragm type pressure sensor and temperature sensor, and is used for exporting the signal of representing inflation pressure of tire that senses and the tire air themperature that senses.
In addition, control unit 22a is used for receiving the energizing signal that one of flip flop equipment 5a and 5b are sent by receiving wire 25 and receiving element 22c, and the command signal that sensitivity is descended in response to receiving energizing signal is exported to receiving wire 25.Sensitivity decline command signal represents that receiving wire 25 is extremely to change the order of the sensitivity of its receptor than low value from high value.
Lower receiver sensitivity value with receiving wire 25, after sending, energizing signal checks when signal is sent by one of flip flop equipment 5a and 5b that control unit 22a can detect and check that signal depends on the distance of transceiver 2 to one of flip flop equipment 5a and 5b.In other words, with lower receiver sensitivity value, the distance of transceiver 2 to one of flip flop equipment 5a and 5b depended in the reception behavior of transceiver 2 in the acceptace inspection signal.
Particularly, in the present embodiment, control unit 22a is used to check whether the lower receiver sensitivity value with receiving wire 25 receives the inspection signal, determine departure time according to check result, and control transmitting element 22b sends frame at determined departure time, this frame conveyed sheet be shown in check signal receive in the reception behavioural information of reception behavior of transceiver 2.More specifically, in this case, whether represent the reception behavior of transceiver 2 with the check result of lower receiver sensitivity value acceptace inspection signal by checking transceiver 2.
Transmitting element 22b is used for coming frame that sending controling unit 22a provides to receptor 3 by transmitting antenna 24.
Receiving element 22c is used for receiving the energizing signal that is sent by one of flip flop equipment 5a and 5b and providing the energizing signal that receives to control unit 22a by receiving wire 25.
Receiving wire 25 disposes antenna element 25a, receiver sensitivity switch 25b and damping resistor 25c.Antenna element 25a can receive the electromagnetic wave with low frequency (as 125kHz).Receiver sensitivity switch 25b and damping resistor 25c are connected in series mutually.In addition, the receiver sensitivity switch 25b of polyphone and damping resistor 25c are in parallel with antenna element 25a together.
With such structure, when receiver sensitivity switch 25b closes and damping resistor 25c so with the isolation of antenna element 25a electricity the time, the receiver sensitivity of receiving wire 25 has higher value.Yet, when sensitivity decline command signal when control unit 22a transfers to receiving wire 25, receiver sensitivity switch 25b just goes to opening from closing, and makes like this that damping resistor 25c and antenna element 25a are in parallel to be electrically connected.As a result, the receiver sensitivity of receiving wire 25 becomes than low value from high value.
Each transceiver 2 as described above all is fixed on the air valve of one of wheel 6a-6d of the vehicle 1 that is associated, and its at least one sensing cell 21 is placed in the tire on the wheel, so that be exposed to the air in the tire.
On the other hand, receptor 3 is installed on the car body 7 of vehicle 1.Receptor 3 is used to receive all frames that sent by transceiver 2, and determines the inflation pressure of four tires based on the tire pressure information in the frame that receives of being included in.For each frame that receives, receptor 3 also is used to discern the wheel that the transceiver 2 that has sent frame is installed on it.
With reference to Figure 13 B, receptor 3 disposes receiving wire 31 and microcomputer 32.
As shown in Figure 12, receiving wire 31 is fixed on the car body 7 of vehicle 1 to receive all frames that four transceivers 2 are sent.
Receiving element 32a is used for receiving all frames that sent by transceiver 2 by receiving wire 31, and provides the frame that receives to control unit 32b.
For each frame that receives from receiving element 32a, control unit 32b is further used for based on the tire pressure information that is included in this frame, determines to be installed on the inflation pressure of the tire on the same wheel (as the transceiver 2 that sends frame).
Like this, can determine in four tires each inflation pressure and position by control unit 32b.When any one determined inflation pressure in four tires reduces to when being lower than predetermined threshold value Th, an expression of control setup 32b output inflation pressure of tire reduces and the alerting signal of tire location.
As shown in Figure 12, warning device 4 is electrically connected on the receptor 3 and is arranged on the chaufeur appreciiable position of vehicle 1.For example, warning device 4 disposes attention display on the instrument carrier panel of vehicle 1.In response to the alerting signal that receives from receptor 3, warning device 4 is used to inform inflation pressure and the tire location that the chaufeur tire has reduced.
Each flip flop equipment 5a and 5b are used for to send energizing signal with predetermined strength in response to first command signal that receives from receptor 3, and are used for to check signal with identical intensity transmission in response to second command signal that receives from receptor 3.
In addition, in the present invention, flip flop equipment 5a and 5b are arranged on the same side (being the right side) of the longitudinal centerline C-C of vehicle 1.Therefore, flip flop equipment 5a compares more close off front wheel 6a with the near front wheel 6b, and flip flop equipment 5b compares more close off hind wheel 6c with left rear wheel 6d.
In addition, flip flop equipment 5a and 5b be arranged on make do not have metal assembly to cover flip flop equipment 5a and 5b is preferred on such position, and can in the process that vehicle 1 travels, place flip flop equipment 5a and 5b avoids foreign matter, as water and stone.
After the total of describing inflation pressure of tire check implement S5, hereinafter 14 and 15 its operation is described with reference to the accompanying drawings, it shows the receptor 3 in the operating process and the process of transceiver 2 respectively.
According to the present invention, inflation pressure of tire check implement S5 has two different patterns.First kind of pattern is " ID registration mode ", and second kind of pattern is " tire pressure detecting pattern ".Inflation pressure of tire check implement S5 is configured at first move the ID registration mode, then moves the tire pressure detecting pattern.
Particularly, when the ignition lock of vehicle 1 went to opening from closing, receptor 3 and flip flop equipment 5a, 5b obtained electric energy from the battery on the vehicle 1, thereby enter the ID registration mode.
Then, shown in step 100 among Figure 14, receptor 3 outputs first command signal is to flip flop equipment 5a.
In response to first command signal that receives, flip flop equipment 5a sends energizing signal to transceiver 2 with predetermined strength.
On the other hand, shown in step 200 among Figure 15, each transceiver 2 all checks whether receive energizing signal.
If obtain the answer of "No" in the inspection of step 200, process directly finishes so.
Otherwise if obtain the answer of "Yes" in the inspection of step 200, process enters step 205.
Because the receiver sensitivity of each transceiver 2 all has higher value in this stage, received by two transceivers on front-wheel 6a and the 6b 2 with the energizing signal that predetermined strength sends by flip flop equipment 5a, the process in these transceivers 2 enters step 205 like this.
In step 205, the receiver sensitivity of each transceiver 2 all responds and receives energizing signal and transfer to than low value from high value.
In step 210, expression receives the parameter N r that checks number of signals and is set to 0, and in step 215, the counting Tc of the timer among the control unit 22a also is set to 0.
Then, as the step 105 described in Figure 14, after first schedule time, receptor 3 is exported second command signal to flip flop equipment 5a from the output of first command signal.
In response to receiving second command signal, flip flop equipment 5a sends with predetermined strength and checks that signal is to transceiver 2.
Go to Figure 15, shown in step 220, each transceiver 2 on front-wheel 6a and 6b checks whether receive the inspection signal that sends from flip flop equipment 5a.
Describe as fwd, check that the intensity of signal decays along with the increase of the distance of distance flip flop equipment 5a.Thus, the intensity of the inspection signal at transceiver 2 places on the off front wheel 6a is higher than the intensity that the near front wheel 6b goes up the inspection signal at transceiver 2 places.Therefore, with lower receiver sensitivity value, the transceiver 2 on the off front wheel 6a can receive this inspection signal, and 2 of transceivers on the near front wheel 6b can not receive this inspection signal simultaneously.
Like this, for the transceiver on the off front wheel 6a 2, obtain the answer of "Yes" in the inspection of step 220, then process then enters into step 225.
In step 225, parameter N r increases by 1, and then process enters into step 230.
On the other hand, the transceiver 2 on the near front wheel 6b obtains the answer of "No" in the inspection of step 220; Process then directly enters step 230.
In step 230, check whether the counting TC of timer surpasses predetermined floor time Ts, in other words, from current time whether in second stage schedule time that receives energizing signal.
Predetermined floor time Ts (or second predetermined amount of time) can be set to have constant value (as 0.1 second) or changing value.For example, predetermined floor time Ts can be set to according to various vehicles or tire conditions, changes as the inflation pressure of car speed and tire.Yet in some cases, predetermined floor time Ts must be longer than or equal first predetermined amount of time and receptor 3 is finished the summation that sends inspection signal required time.
If check the answer that obtains "No" in step 230, process turns back to step 220 so.
Otherwise if be checked through the answer of "Yes" in step 230, process enters step 235 so.
In step 235, check further whether parameter N r equals 1, in other words, whether each transceiver 2 receives the inspection signal.
For the transceiver on the off front wheel 6a 2, obtain the answer of "Yes" step 235 inspection; Process then enters into step 240.
In step 240, transceiver 2 sends the frame of the id information of the reception behavioural information of passing on the sign of representing transceiver 2 and being illustrated in step 235 check result, and promptly transceiver 2 receives the inspection signal.Then process finishes.
On the other hand, for the transceiver on the near front wheel 6b 2, obtain the answer of "No" in the inspection of step 235; Process enters into step 245.
In step 245, the wait time Tw that wait time Tw and transceiver 2 are waited for setting is set.
By arranging step 245, might avoid the interference of the frame that sends by different transceivers 2 at receptor 3 places.
In step 250 subsequently, the frame that transceiver 2 sends the id information of the sign of passing on expression transceivers 2 and is illustrated in the reception behavioural information that step 235 inspection obtains does not promptly receive the inspection signal of transceiver 2.Then, process finishes.
Turn back to Figure 14, receptor 3 checks whether receive the frame that the transceiver 2 on front-wheel 6a and the 6b is sent, and this is shown in the step 110.
If check the answer obtain "No" in step 110, process turns back to step 100 so.
In addition, check the answer obtain "Yes" in step 110, process enters into step 115 so.
In step 115, for a frame that receives thus, it comprises expression and receives the reception behavioural information of checking signal, and receptor 3 is identified as off front wheel 6a with the wheel that the transceiver 2 that has sent frame is installed on it.Then, receptor 3 storage package in its memory device is contained in the id information in the frame, as the reference id information that is associated with off front wheel 6a.
In step 120, for another frame that receives thus, it comprises expression and does not receive the reception behavioural information of checking signal, and receptor 3 further is identified as the near front wheel 6b with the wheel that the transceiver 2 that has sent frame is installed on it.Then, receptor 3 storage package in its memory device is contained in the id information in the frame, as the reference id information that is associated with the near front wheel 6b.
In step 125-135 subsequently, with respect to the transceiver on trailing wheel 6c and the 6d 2, receptor 3 is carried out the process identical with step 100-110 by exporting first and second command signals continuously to flip flop equipment 5b.Simultaneously, the transceiver on the transceiver 2 on trailing wheel 6c and the 6d and front-wheel 6a and the 6b 2 is the same carries out the process shown in Figure 15.
In step 140, for a frame that receives recently, it comprises expression and receives the reception behavioural information of checking signal, and receptor 3 is identified as off hind wheel 6c with the wheel that the receptor 2 that has sent frame is installed on it.Then, receptor 3 storage package in its memory device is contained in the id information in the frame, as the reference id information that is associated with off hind wheel 6c.
In step 145, for another frame that receives recently, it comprises expression and does not receive the reception behavioural information of checking signal, and receptor 3 further is identified as left rear wheel 6d with the wheel that the transceiver 2 that has sent frame is installed on it.Then, receptor 3 storage package in its memory device is contained in the id information in the frame, as the reference id information that is associated with left rear wheel 6d.Then, process finishes.
Like this, for all received frames each, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the reception behavioural information that is included in the frame.
Can understand above-described wheel identifying more fully from accompanying drawing 16.
As shown in Figure 16, the ignition lock (IG) of vehicle 1 from close go to opening after, flip flop equipment 5a sends energizing signal (T.S.) in succession and checks signal (C.S.).
Then, the transceiver 2 on off front wheel 6a receives the energizing signal that is sent by flip flop equipment 5a and checks signal, and sends frame from receiving energizing signal afterwards through predetermined floor time Ts (or after second predetermined amount of time).
Comparatively speaking, the transceiver 2 on the near front wheel 6b only receives the energizing signal that flip flop equipment 5a sends, and is sending frame from receiving energizing signal after through the time that equals predetermined floor time Ts and wait time Tw sum.
After this, flip flop equipment 5b sends energizing signal in succession and checks signal.
Then, transceiver on the off hind wheel 6c 2 receives the energizing signal that flip flop equipment 5b are sent and checks signal, and receives energizing signal through associating and rise after predetermined floor time Ts and send frame.
Comparatively speaking, the transceiver 2 on the left rear wheel 6d only receives the energizing signal that flip flop equipment 5b is sent, and sends frame from receiving energizing signal after the time through equaling predetermined floor time Ts and wait time Tw sum.
After the wheel identifying was finished, the operation of inflation pressure of tire check implement S5 changed the tire pressure detecting pattern into from the ID registration mode.
In the tire pressure detecting pattern, each transceiver 2 control unit 22a receives from the signal of sensing cell 21 outputs and handles these signals.Then, the tire pressure information of the inflation pressure of the control unit 22a tire that is associated that storage representation sensing cell 21 senses in frame, and the id information of the sign of expression transceiver 2.In addition, control unit 22a control transmitting element 22b sends frame repeatedly with preset time interval (as a minute).
The control unit 32b of receptor 3 receives all frames that sent by transceiver 2 by receiving wire 31 and receiving element 32a.
Then, for each frame that receives, control unit 32b by relatively be included in the frame id information and be registered in the memory device all discern the wheel that the transceiver 2 that has sent frame is installed on it with reference to id information.
In addition, for each frame that receives, control unit 32b determines to be arranged on the transceiver 2 that sends frame the inflation pressure of the tire of same wheel based on the tire pressure information that is included in the frame.
In addition, the frame that each transceiver 2 is sent can comprise the be associated tyre temperature information of air themperature in the tire of expression, make if necessary, the control unit 32b of receptor 3 can come determined inflation pressure of tire is implemented temperature compensating based on the temperature information in the frame that is included in each reception.
Therefore, inflation pressure and the position of each all determined by control unit 32b in four tires.When in four tires any one definite inflation pressure be reduced to when being lower than predetermined threshold value Th, control unit 32b informs the inflation pressure and the position of the minimizing of chaufeur tire by warning device 4.
Generally speaking, in the inflation pressure of tire check implement S5 according to present embodiment, flip flop equipment 5a is arranged on front-wheel 6a and the 6b with distance transceiver 2 different distances, and flip flop equipment 5b is arranged on trailing wheel 6c and the 6d with distance transceiver 2 different distances; Each transceiver 2 all has transformable receiver sensitivity, and extremely changes receiver sensitivity than low value in response to receiving a corresponding energizing signal that is sent among flip flop equipment 5a and the 5b from high value; With lower receiver sensitivity value, in receiving flip flop equipment 5a and 5b, during corresponding inspection signal that is sent, be different between the reception behavior of transceiver 2; For each frame that receives thus, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the reception behavioural information that is included in the frame.
With structure above, receptor 3 can accurately be determined the position of transceiver 2 on the vehicle 1.
Thus, with top structure, inflation pressure of tire check implement S5 can determine the position and the inflation pressure of tire on the vehicle 1 automatically and accurately.
In addition, with structure above, inflation pressure of tire check implement S5 can carry out the id information registered task automatically reliably.
In addition, can have identical structure, and can only comprise single receive antenna 31, so just reduce the manufacturing cost of inflation pressure of tire check implement S5 for receptor 3 concerning all transceivers 2.
In addition, the above structure of inflation pressure of tire check implement S5 can so be revised: transceiver 2 does not comprise the frame separately that receives behavioural information according to it receiving to send by the reception behavior in the inspection signal that is sent of correspondence among flip flop equipment 5a and the 5b on different departures time; Receptor 3 receives all frames that sent by transceiver 2 at different time of receptions like this, and for each frame that receives, discerns the wheel that the transceiver 2 that has sent frame is installed on it based on the time of reception that receives frame.
In addition, in the present embodiment, this inflation pressure of tire check implement S5 is configured to two kinds of different pattern operations, i.e. ID registration mode and tire pressure detecting patterns.
Yet, inflation pressure of tire check implement S5 can also be configured to only operate with single-mode, wherein: at the fixed time at interval, each transceiver 2 all sends to include repeatedly represents to be associated the inflation pressure of tire information of inflation pressure of tire and the frame that is illustrated in the reception behavioural information of transceiver 2 in the acceptace inspection signal; For each frame that receives from transceiver 2, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the reception behavioural information that is included in the frame; For each frame that receives from transceiver 2, receptor 3 detects the inflation pressure that is arranged on the tire on the same wheel with the receptor 2 that sends frame further based on being included in tire pressure information in the frame.
With the structure of this modification, can not use any id information to detect the inflation pressure and the position of tire on the vehicle 1 automatically and accurately.
[the 6th embodiment]
This embodiment shows a kind of inflation pressure of tire check implement S6, and it has almost and the identical structure of inflation pressure of tire check implement S5 according to last embodiment.Therefore, between the two difference hereinafter will only be described.
In last embodiment, each flip flop equipment 5a and 5b at first send energizing signal, and send the inspection signal from sending energizing signal after predetermined very first time section.
Comparatively speaking, in the present embodiment, each flip flop equipment 5a and 5b send the continuous carrier behind energizing signal and the energizing signal continuously.
Figure 17 shows the structure of each transceiver 2 among the inflation pressure of tire check implement S6.
As shown in Figure 17, in each transceiver 2, receiving wire 25 comprises a pair of above receiver sensitivity switch 25b and damping resistor 25c.In addition, each links to each other with damping resistor 25c and antenna element 25a are parallel to receiver sensitivity switch 25b.
With structure above, control unit 22a can control the quantity of the damping resistor 25c that is electrically connected with antenna element 25a by the on/off operation of control receiver sensitivity switch 25b.In addition, by controlling the quantity of the damping resistor 25c that is electrically connected with antenna element 25a, control unit 22a can change the receiver sensitivity of receiving wire 25 gradually in a plurality of stages.
On the other hand, the control unit 32b of receptor 3 only exports single command signal to flip flop equipment 5a and 5b, thereby makes them send energizing signal and continuous carrier continuously.
Continuous carrier disposes unmodulated signal and sends at the 3rd predetermined amount of time.Concerning transceiver 2 the 3rd predetermined amount of time be provided with long enough so that the repeated detection continuous carrier.
In addition, in case receive corresponding energizing signal that is sent among corresponding flip flop equipment 5a and the 5b, the control unit 22a of each transceiver 2 just changes the receiver sensitivity of receiving wire 25 into minimum value from maxim in a plurality of stages, and determines to become from which stage and can not detect continuous carrier.
Particularly, with reference to Figure 17, when all receiver sensitivity switch 25b closed, the receiver sensitivity of receiving wire 25 had maxim, and when all receiver sensitivity switch 25b open, had minimum value.In four-stage, the receiver sensitivity of receiving wire 25 can little by little become minimum value from maxim.
Because flip flop equipment 5a and 5b are arranged on the different distance of transceiver 2, differ from one another in the intensity of the continuous carrier at transceiver 2 places.Therefore, for transceiver 2, the stage that cannot detect continuous carrier that becomes differs from one another.In other words, in receiver sensitivity change process, differ from one another by the number of times of transceiver 2 detected continuous carriers.Therefore, receptor 3 can be determined the position of receiver 2 based on the number of times of transceiver 2 detected continuous carriers in receiver sensitivity change process.
After the integral structure of describing inflation pressure of tire check implement S6, hereinafter 18 and 19 its operation is described with reference to the accompanying drawings, it shows receptor 3 and transceiver 2 step during operation respectively.
When the ignition lock (not shown) of vehicle 1 goes to unlatching from closing, can give receptor 3 and flip flop equipment 5a and 5b by the powered battery on the vehicle 1, thereby enter the ID registration mode.
Then, shown in step 300 among Figure 18, receptor 3 output instruction signals are to flip flop equipment 5a.
In response to receiving command signal, flip flop equipment 5a sends energizing signal and continuous carrier in succession with predetermined strength.
On the other hand, shown in step 400 among Figure 19, each transceiver 2 all checks whether receive energizing signal.
If check the answer obtain "No" in step 400, process directly finishes so.
Otherwise if check the answer obtain "Yes" in step 400, process enters into step 405 so.
Because the receiver sensitivity at each transceiver 2 of this stage has maxim, received by two transceivers on front-wheel 6a and the 6b 2 with the energizing signal that predetermined strength was sent by flip flop equipment 5a, therefore the process in these transceivers 2 enters into step 405.
In step 405, determine whether the energizing signal that is received represents to carry out the order of wheel identification.
If in the answer of determining to obtain "No" of step 405, process enters step 410 so.
In step 410, carry out preset task according to order; Then process finishes.
Otherwise if in the answer of determining to obtain "Yes" of step 405, process enters into step 415 so.
In step 415, parameter N is set to 4, and parameter N d is set to 0 (zero).Here, parameter N be provided with the progression that equals to change in the receiver sensitivity.Parameter N d is illustrated in the receiver sensitivity change process, detects the number of times of continuous carrier.
In step 420, the receiver sensitivity of each transceiver 2 all reduces one-level.
Particularly, the control unit 22a of each transceiver 2 all output sensitivity decline command signal to receiving wire 25, this makes a receiver sensitivity switch 25b go to unlatching from closing, and is electrically connected thereby make a corresponding damping resistor 25c and antenna element element 25a walk abreast.
In step 425, each transceiver 2 all detects the continuous carrier that sends in succession behind energizing signal.
In step 430, each transceiver 2 all checks whether detect continuous carrier thus.
If check the answer obtain to "Yes" in step 430, process enters into step 435 so.
In step 435, parameter N d is set to (4-(N-1)); Process then enters into step 440.
Otherwise if check the answer obtain to "No" in step 430, process directly enters step 440 so, and does not change the value of parameter N d.
In step 440, parameter N reduces 1.
In step 445, check whether parameter N equals 0 (zero).
If check the answer obtain "No" in step 445, process turns back to step 420 so.
Otherwise if check the answer obtain "Yes" in step 445, process enters into step 450 so.
By carrying out step 420-445 above repeatedly, the receiver sensitivity of each transceiver 2 is decreased to minimum value from maxim in four-stage, and the number of times of the continuous carrier that each transceiver 2 is detected during receiver sensitivity (being Nd) changes is determined.
In step 450, each transceiver 2 is all determined wait time Tw, and waits for determined wait time Tw.Here, wait time Tw is determined by following equation:
Tw=((4-Nd)) * Tr wherein Tr is the needed time of transmission that transceiver 2 is finished a frame.
After waiting for Tw, in step 455, each transceiver 2 all sends the frame of the id information that comprises the sign of representing transceiver 2.Then, process finishes.
By carrying out top step 450 and 455, the transceiver 2 on front-wheel 6a and 6b sends separately frame at different departures time.Particularly, because flip flop equipment 5a is provided with to such an extent that compare with the near front wheel 6b near off front wheel 6a, the intensity of the continuous carrier at transceiver 2 places on intensity ratio the near front wheel 6b of the continuous carrier at 2 places of the transceiver on the off front wheel 6a is eager to excel.Thus, the Nd of the last transceiver 2 of off front wheel 6a is greater than the Nd of the transceiver 2 on the near front wheel 6b, thereby the Tw of the transceiver 2 on the off front wheel 6a is smaller than the Tw of the transceiver 2 on the near front wheel 6b.
Therefore, the departure time of the transceiver 2 on the off front wheel 6a will be early than the departure time of the transceiver on the near front wheel 6b 2; Receptor 3 will at first receive the frame that the transceiver 2 on the off front wheel 6a is sent like this, receive the frame that the transceiver 2 on the near front wheel 6b is sent then.
Return Figure 18, in step 305, receptor 3 at first receives the frame that the transceiver 2 on front-wheel 6a and the 6b is sent, and the transceiver 2 that will send the frame that at first receives is identified as and is installed on the off front wheel 6a.Then, receptor 3 storage package in its memory device is contained in the id information in the frame that at first receives, as the reference id information that is associated with off front wheel 6a.
In step 310, secondly receptor 3 receives front-wheel 6a and 6b and goes up another frame that transceiver 2 is sent, and the transceiver 2 that will send second frame that receives is identified as and is installed on the near front wheel 6b.Then, receptor 3 storage package in its memory device is contained in the id information in second frame that receives, as the reference id information that is associated with the near front wheel 6b.
In step 315 subsequently, receptor 3 output instruction signals are to flip flop equipment 5b.
In response to receiving command signal, flip flop equipment 5b sends energizing signal and continuous carrier with predetermined strength continuously.
In case receive the energizing signal that flip flop equipment 5b is sent, the same with transceiver 2 on front-wheel 6a and the 6b, the transceiver 2 on trailing wheel 6c and the 6d is just carried out the process shown in Figure 19.Therefore, the transceiver 2 on trailing wheel 6c and the 6d sends separately frame at different departures time.
Then, shown in the step 320 of Figure 18, receptor 3 the 3rd receives by trailing wheel 6c and 6d and goes up the frame that transceiver 2 is sent, and the transceiver 2 that will send the 3rd frame that receives is identified as and is installed on the off hind wheel 6c.After this, receptor 3 storage package in its memory device is contained in the id information in the 3rd frame that receives, as the reference id information that is associated with off hind wheel 6c.
In step 325, receptor 3 the 4th receives another of the frame that sent by the transceiver on trailing wheel 6c and the 6d 2, and the transceiver 2 that will send the 4th frame that receives is identified as and is installed on the left rear wheel 6d.Then, receptor 3 storage package in its memory device is contained in the id information in the 4th frame that receives, as the reference id information that is associated with left rear wheel 6d.
After step 325, the wheel identifying of receptor 3 finishes.
Then, the operation of inflation pressure of tire check implement S6 is converted to the tire pressure detecting pattern from the ID registration mode.
The tire pressure detecting pattern of inflation pressure of tire check implement S6 is identical with the pattern of inflation pressure of tire check implement S5, and therefore, the descriptions thereof are omitted at this.
From Figure 20, can more fully understand above-described wheel identifying, only illustrate that wherein front-wheel 6a and 6b go up the wheel identification of transceiver 2 according to present embodiment.
As shown in Figure 20, flip flop equipment 5a sends energizing signal and continuous carrier in succession.
Then, two transceivers 2 on front-wheel 6a and the 6b receive energizing signal and change its receiver sensitivity (R.S.) in response to receiving energizing signal in four-stage.In each stage that receiver sensitivity changes, each transceiver 2 all checks whether detect continuous carrier thus, and calculates the number of times (being Nd) of detected continuous carrier.
Because flip flop equipment 5a is provided with to such an extent that compare more close off front wheel 6a with the near front wheel 6b, for example the Nd of the transceiver 2 on the off front wheel 6a for example is 4, and the Nd of the transceiver 2 on the near front wheel 6b is 1.Like this, the wait time Tw of the last transceiver 2 of off front wheel 6a is set to and is shorter than the wait time Tw that the near front wheel 6b goes up transceiver 2.
Therefore, send separately frame,, and, discern the wheel that the transceiver 2 that has sent frame is installed on it based on the time of reception that receives frame for each frame that receives so that receptor 3 is at different time of reception received frames at different departure time transceiver 2.
Have and identical advantage according to the inflation pressure of tire check implement S6 of present embodiment according to the inflation pressure of tire check implement S5 of last embodiment.
In addition, the structure of inflation pressure of tire check implement S6 as described above can so be revised: transceiver 2 sends the frame separately that comprises the reception behavioural information of representing detected continuous carrier number of times; For each frame that receives thus, receptor 3 is discerned the wheel that the transceiver 2 that has sent frame is installed on it based on the reception behavioural information that is included in the frame.
[other embodiment]
Though above illustrated and described specific embodiments of the invention, but, various modifications, change and improvement that the present invention made all will be understood spiritual the getting under the prerequisite that does not break away from disclosure thought for implementing the present invention and those skilled in the art.
For example, among the embodiment in front, receptor 3 only comprises that single receiving wire 31 receives all frames that sent by transceiver 2.
Yet receptor 3 can also have the receiving wire 31 of varying number.For example, receptor 3 can comprise four receiving wires 31, its each all corresponding with one of four transceivers 2.Should be appreciated that the present invention only comprises at receptor 3 under the situation of single receive antenna 31, effective especially, and therefore for receptor 3, it is difficult differentiating the frame that receives by common receiving wire 31 each other.
In front embodiment of the present invention, each frame that transceiver 2 is sent all includes the id information of sign that expression has sent the transceiver 2 of frame.
Yet except this id information, each frame that transceiver 2 is sent all also includes the vehicle ID information of the sign of representing vehicle 1.In this case, still can automatically perform registered task according to all id informations of the present invention.
In the third embodiment of the present invention, flip flop equipment 5a and 5b are arranged on the same side of longitudinal centerline of vehicle 1.
Yet flip flop equipment 5a and 5b can also be arranged on the same side of cross central line of vehicle 1.For example, flip flop equipment 5b can be provided with to such an extent that nestle up off hind wheel 6c, and flip flop equipment 5a is provided with to such an extent that nestle up left rear wheel 6d.In this case, receptor 3 still has possible accuracy ground to determine the position of transceiver 2, thereby with the method identical with the 3rd embodiment determine the to be associated position of tire.
In the of the present invention the 5th and the 6th embodiment, for the transceiver on front-wheel 6a and the 6b 2, applications trigger device 5a carries out wheel identification, and for the transceiver on trailing wheel 6c and the 6d 2, applications trigger device 5b carries out wheel identification.
Yet, near flip flop equipment 5a can be arranged on right wheel 6a and 6c apart from off front wheel 6a and off hind wheel 6c different distance place, be used for the transceiver 2 on right side wheel 6a and the 6c is carried out wheel identification, near flip flop equipment 5b can be arranged on revolver 6b and 6d apart from the near front wheel 6b and left rear wheel 6d different distance place, be used for the transceiver on revolver 6b and the 6d 2 is carried out wheel identification.
In addition, in the sixth embodiment of the present invention, single flip flop equipment can be applied to all transceivers 2 on the wheel 6a-6d are carried out wheel identification.In this case, need single flip flop equipment to be arranged on different distance place, and at least 3 transceivers 2 can receive the energizing signal by this flip flop equipment transmission, and send frame in response to receiving energizing signal apart from all transceivers 2.
In the 5th and the 6th embodiment of invention, the variable receiver sensitivity of transceiver 2 obtains by using damping resistor 25.
Yet, replace using damping resistor 25, can in the receiving element 22c of each transceiver 2, use amplifier, and the receiver sensitivity of each transceiver 2 can change by changing Amplifier Gain.
In the of the present invention the 5th and the 6th embodiment, transceiver 2 only sends once frame separately in the ID registration mode.
Yet in the ID registration mode, transceiver 2 can repeatedly send separately frame repeatedly with different time gaps.In addition, all frames of being sent of transceiver 2 can comprise the data of identical size.As a result, receptor 3 can receive the interference that is not had frame by the frame of transceiver 2 transmissions more reliably.
Within the scope of appended claim, this modification in the art technology, change and improvement all are fine.
Claims (23)
1. inflation pressure of tire check implement comprises:
Be separately positioned on first and second pressure sensors on first and second wheels of vehicle, the inflation pressure of a tire that is associated on each pressure sensor all is used for sensing and is installed to first and second wheels, and the tire pressure information of the inflation pressure of tire that is associated that senses of output expression;
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal and sends response signal in response to receiving energizing signal, and this response signal is passed on the tire pressure information of being exported by one of first and second pressure sensors that are associated;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is arranged on the car body of vehicle with the different distance of distance transceiver, makes that the intensity at the energizing signal at transceiver place differs from one another;
Be used to receive the receptor of the response signal that sends by transceiver;
The wheel identifier that is operably connected with receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal; And
The wheel tire pressure determiner that is operably connected with receptor and wheel identifier, for by each received response signal of receptor, the tire pressure information that wheel tire pressure determiner is passed on based on response signal, the next inflation pressure of determining to be arranged on the tire on the same wheel with the transceiver that has sent response signal;
Wherein:
In case receive the energizing signal that flip flop equipment sends, each transceiver is just determined the intensity of energizing signal herein, and sending the response signal of passing on signal strength information and tire pressure information, described signal strength information is represented the intensity of determined energizing signal; And
For each received response signal of receptor, the signal strength information that wheel identifier is passed on based on response signal is discerned its wheel that is provided with the transceiver that sends response signal.
2. wheel identification equipment comprises:
Be separately positioned on first and second transceivers on vehicle first and second wheels, each transceiver all is used to receive energizing signal, and sends response signal in response to receiving energizing signal;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment with the distance transceiver different the distance be arranged on the car body of vehicle, make the intensity of the energizing signal on transceiver differ from one another;
Be used to receive the receptor of the response signal that sends by transceiver; And
The wheel identifier that is operably connected with receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal;
Wherein:
In case receive the energizing signal that flip flop equipment sends, each transceiver is just determined the intensity of energizing signal herein, determines departure time according to the intensity of determined energizing signal, and sends response signal at determined departure time;
At different time of receptions, receptor receives the response signal by transceiver sent; And
For each received response signal of receptor, wheel identifier receives the time of reception of response signal based on receptor, discerns the wheel that it is provided with the transceiver that sends response signal.
3. wheel identification equipment according to claim 2, wherein:
Flip flop equipment is exported low intensive energizing signal like this makes one of first and second transceivers can not detect energizing signal, thereby one of this first and second transceiver does not send response signal; And
Wheel identifier is identified as its wheel that can not detect energizing signal that is provided with one of described first and second transceivers in first and second wheels wheel of comparing with another further from flip flop equipment.
4. wheel identification equipment according to claim 2, wherein:
Each transceiver all has its special sign and sends the response signal of passing on id information in response to receiving the energizing signal that is sent by flip flop equipment, and described id information is represented the transceiver sign; And
After each response signal that receptor is received had been carried out wheel identification, wheel identifier was further stored the id information of being passed on by response signal, as the reference id information that is associated with the wheel of discerning.
5. wheel identification equipment according to claim 2, further comprise third and fourth transceiver, they are separately positioned on third and fourth wheel of vehicle and have the structure identical with first and second transceivers, and comprise another flip flop equipment, it is arranged on the car body of vehicle with the different distance of distance third and fourth transceiver, and has the structure identical with described flip flop equipment; Wherein:
Described flip flop equipment is first flip flop equipment, and another flip flop equipment is second flip flop equipment;
First and second wheels are trailing wheels of vehicle, and third and fourth wheel is a vehicle front-wheel;
First flip flop equipment is provided with to such an extent that compare more close first and second transceivers with third and fourth transceiver, and second flip flop equipment is provided with to such an extent that compare more close third and fourth transceiver with first and second transceivers;
When first flip flop equipment sent energizing signal, at least the first and second transceivers received energizing signal, and sent response signal separately in response to receiving energizing signal; And
When second flip flop equipment sent energizing signal, at least the third and fourth transceiver received energizing signal, and sent response signal separately in response to receiving energizing signal.
6. wheel identification equipment according to claim 2, further comprise third and fourth transceiver, they are separately positioned on third and fourth wheel of vehicle, and have a structure identical with first and second transceivers, and comprise another flip flop equipment, it is arranged on the car body of vehicle with the different distance of distance third and fourth transceiver, and has the structure identical with described flip flop equipment, wherein:
Described flip flop equipment is first flip flop equipment, and another flip flop equipment is second flip flop equipment;
First and second wheels are left wheels of vehicle, and third and fourth wheel is the right wheel of vehicle;
First flip flop equipment is provided with to such an extent that compare more close first and second transceivers with third and fourth transceiver, and second flip flop equipment is compared more close third and fourth transceiver with first and second transceivers;
When first flip flop equipment sent energizing signal, at least the first and second transceivers received energizing signal, and sent response signal separately in response to receiving energizing signal; And
When second flip flop equipment sent energizing signal, at least the third and fourth transceiver received energizing signal, and sent response signal separately in response to receiving energizing signal.
7. inflation pressure of tire check implement comprises:
Be separately positioned on first and second pressure sensors on first and second wheels of vehicle, each pressure sensor all is used for the inflation pressure that sensing is installed in a tire that is associated on first and second wheels, and the tire pressure information of the inflation pressure of the tire that is associated that senses of output expression;
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal, and send response signal in response to receiving energizing signal, the tire pressure information that this response signal passes on one of first and second pressure sensors of being associated to be exported;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is arranged on the car body of vehicle with the different distance of distance transceiver, makes that the intensity at the energizing signal at transceiver place differs from one another;
Be used to receive the receptor of the response signal that sends by transceiver;
Can be operationally connected to the wheel identifier on the receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal; And
Be operably connected to the wheel tire pressure determiner on receptor and the wheel identifier, for each received response signal of receptor, the tire pressure information that wheel tire pressure determiner is passed on based on response signal, the next inflation pressure of determining to be arranged on the tire on the same wheel with the receptor that has sent response signal;
Wherein:
In case receive the energizing signal that flip flop equipment sends, each transceiver is just determined the intensity of energizing signal herein, determines departure time according to the intensity of determined energizing signal, and sends response signal at determined departure time;
Receive response signal at different time of reception receptor by transceiver sent; And
For each received response signal of receptor, wheel identifier receives the time of reception of response signal based on receptor, discerns the wheel that it is provided with the transceiver that sends response signal.
8. wheel identification equipment comprises:
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal, and sends response signal in response to receiving energizing signal;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is arranged on the car body of vehicle with the different distance of distance transceiver, makes that the intensity at the energizing signal at transceiver place differs from one another;
Be used to receive the receptor of the response signal that sends by transceiver; And
The wheel identifier that is operably connected with receptor, for each received response signal of receptor, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal;
Wherein:
Each transceiver all has transformable receiver sensitivity, and receives the energizing signal that flip flop equipment is sent with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value from high value;
After sending energizing signal, flip flop equipment further sends the inspection signal;
Each transceiver is all determined its reception behavior in lower receiver sensitivity value acceptace inspection signal;
Each transceiver all sends passes on the response signal that receives behavioural information, and described reception behavioural information is represented determined reception behavior; And
For each received response signal of receptor, the reception behavioural information that wheel identifier is passed on based on response signal is discerned the wheel that it is provided with the transceiver that sends response signal.
9. wheel identification equipment according to claim 8, wherein:
From sending energizing signal after first predetermined amount of time, flip flop equipment sends checks signal;
After second predetermined amount of time that receives energizing signal, whether each transceiver all receives the inspection signal with its lower receiver sensitivity value inspection; And
The reception behavioural information of each transceiver represents all whether transceiver receives the check result of checking signal with lower receiver sensitivity value.
10. wheel identification equipment according to claim 8, wherein:
Check that signal is a continuous carrier, this continuous carrier is sent by flip flop equipment after the close contact give a signal;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value from high value in a plurality of stages;
Each transceiver is all determined a stage, becomes from this stage transceiver and cannot detect continuous carrier; And
The reception behavioural information of each transceiver is represented the determined stage, becomes from this stage transceiver and cannot detect continuous carrier.
11. wheel identification equipment according to claim 10, wherein:
Each transceiver detects continuous carrier with its receiver sensitivity in each stage that changes; And
Each transceiver is all determined a stage, becomes and cannot detect continuous carrier by the number of times of determining the detected continuous carrier of transceiver during receiver sensitivity changes from this stage transceiver.
12. wheel identification equipment according to claim 11 further comprises third and fourth transceiver, they are separately positioned on vehicle third and fourth wheel and have the structure identical with first and second transceivers, wherein:
Flip flop equipment is to be set up apart from the different distance of all transceivers;
Flip flop equipment is exported low intensive energizing signal like this makes one of all transceivers can not detect energizing signal, thereby one of these all transceivers do not send response signal; And
Wheel identifier is identified as in all wheels its wheel that is provided with one of described all transceivers apart from a flip flop equipment wheel farthest.
13. wheel identification equipment according to claim 8, further comprise third and fourth transceiver, they are separately positioned on third and fourth wheel of vehicle, and have a structure identical with first and second transceivers, and comprise another flip flop equipment, be arranged on the car body of vehicle with the different distance of distance third and fourth transceiver, and have the structure identical with described flip flop equipment, wherein:
Described flip flop equipment is first flip flop equipment, and another flip flop equipment is second flip flop equipment;
First flip flop equipment is provided with to such an extent that compare more close first and second transceivers with third and fourth transceiver, and second flip flop equipment is provided with to such an extent that compare more close third and fourth transceiver with first and second transceivers;
First and second flip flop equipments are at different time transmission energizing signal separately;
First and second transceivers receive the energizing signal that first flip flop equipment is sent, and in response to receiving the energizing signal that first flip flop equipment is sent, send response signal separately;
Receptor receives the response signal that is sent by first and second transceivers, and for each response signal that is sent to receptor from first and second transceivers, wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal;
Third and fourth transceiver receives the energizing signal that second flip flop equipment is sent, and in response to receiving the energizing signal that second flip flop equipment is sent, sends response signal separately; And
Receptor receives the response signal that third and fourth transceiver is sent, and for each response signal that is sent to receptor from third and fourth transceiver, wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal.
14. wheel identification equipment according to claim 8, wherein:
The response signal that transceiver sent comprises the data of same size; And
With different time gaps, transceiver repeatedly sends response signal separately repeatedly.
15. an inflation pressure of tire check implement comprises:
Be separately positioned on first and second pressure sensors on first and second wheels of vehicle, each pressure sensor all is used for the inflation pressure that sensing is installed to a tire that is associated on first and second wheels, and the be associated tire pressure information of the inflation pressure that tire senses of output expression;
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal, and sending response signal in response to receiving energizing signal, this response signal is passed on the wheel tire pressure signal of being exported by one of first and second pressure sensors of association;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is arranged on the car body of vehicle with the different distance of distance transceiver, makes that the intensity at the energizing signal at transceiver place differs from one another;
Be used to receive the receptor of the response signal that sends by transceiver;
The wheel identifier that is operably connected with receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal; And
The tire pressure determiner that is operably connected with receptor and wheel identifier, each response signal that receives for receptor, the tire pressure information that the tire pressure determiner is passed on based on response signal is determined the inflation pressure of tire, and this tire is set on the same wheel with the transceiver that sends response signal;
Wherein:
Each transceiver all has transformable receiver sensitivity value, and receives the energizing signal that flip flop equipment is sent with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value from high value;
After sending energizing signal, flip flop equipment further sends the inspection signal;
Each transceiver is all to determine its reception behavior in the lower receiver sensitivity value acceptace inspection signal;
Each transceiver all sends response signal, and this response signal is passed on and received behavioural information and tire pressure information, and this reception behavioural information is represented determined reception behavior; And
For each response signal that receiver receives, the reception behavioural information that wheel identifier is passed on based on response signal is discerned the wheel that it is provided with the transceiver that sends response signal.
16. a wheel identification equipment comprises:
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal, and sends response signal in response to receiving energizing signal;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is set on the car body of vehicle with the different distance of distance transceiver, makes that the intensity at the energizing signal at transceiver place differs from one another; And
Be used to receive the receptor of the response signal that sends by transceiver; And
The wheel identifier that is operably connected with receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal;
Wherein:
Each transceiver all has transformable receiver sensitivity, and receives the energizing signal that flip flop equipment was sent with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value from high value;
After sending energizing signal, flip flop equipment further sends the inspection signal;
Each transceiver is all determined its reception behavior in lower receiver sensitivity value acceptace inspection signal;
Each transceiver is all determined departure time according to determined reception behavior, and sends response signal at determined departure time;
Receptor receives response signal by transceiver sent at different time of reception; And
For each received response signal of receptor, car identifier receives the time of reception of response signal based on receptor, discerns the wheel that it is provided with the transceiver that sends response signal.
17. wheel identification equipment according to claim 16, wherein:
From sending energizing signal after first predetermined amount of time, flip flop equipment sends checks signal;
From receiving energizing signal after second predetermined amount of time, each transceiver all checks with its lower receiver sensitivity whether it receives the inspection signal; And
Each transceiver all according to whether receive the check result of checking signal with lower receiver sensitivity value transceiver, is determined departure time.
18. wheel identification equipment according to claim 16, wherein:
Check that signal is a continuous carrier, this continuous carrier is sent by flip flop equipment after the close contact give a signal;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value from high value in a plurality of stages;
Each transceiver is all determined a stage, becomes from this stage transceiver and cannot detect continuous carrier; And
Each transceiver is all determined departure time according to the determined stage, becomes from this determined stage transceiver and cannot detect continuous carrier.
19. wheel identification equipment according to claim 18, wherein:
Each transceiver all detects continuous carrier in each stage that its receiver sensitivity changes; And
Each transceiver is all determined a stage, becomes and cannot detect continuous carrier by the number of times of determining the detected continuous carrier of transceiver during receiver sensitivity changes from this stage transceiver.
20. wheel identification equipment according to claim 19 further comprises third and fourth transceiver, they are separately positioned on third and fourth wheel of vehicle, and have the structure identical with first and second transceivers, wherein:
Flip flop equipment is to be set up apart from the different distance of all transceivers;
Flip flop equipment is exported low intensive energizing signal like this makes one of all transceivers can not detect energizing signal, thereby one of these all transceivers do not send response signal; And
Wheel identifier is identified as in all wheels its wheel that is provided with one of all transceivers apart from a flip flop equipment wheel farthest.
21. wheel identification equipment according to claim 16, further comprise third and fourth transceiver, they are separately positioned on third and fourth wheel of vehicle, and have a structure identical with first and second transceivers, and comprise another flip flop equipment, it is set on the car body of car connection with the different distance of distance third and fourth transceiver, and has the structure identical with described flip flop equipment, wherein:
Described flip flop equipment is first flip flop equipment, and another flip flop equipment is second flip flop equipment;
First flip flop equipment is provided with to such an extent that compare more close first and second transceivers with third and fourth transceiver, and second flip flop equipment is provided with to such an extent that compare more close third and fourth transceiver with first and second transceivers;
First and second flip flop equipments are at different time transmission energizing signal separately;
First and second transceivers receive the energizing signal that first flip flop equipment sends, and in response to receiving the energizing signal that is sent by first flip flop equipment, send response signal separately;
Receptor receives the response signal that first and second transceivers are sent, and is sent to the response signal of receptor for each from first and second transceivers, and wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal,
Third and fourth transceiver receives the energizing signal that second flip flop equipment sends, and in response to receiving the energizing signal that second flip flop equipment sends, sends response signal separately; And
Receptor receives the response signal that third and fourth transceiver is sent, and is sent to the response signal of receptor for each from third and fourth transceiver, and wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal.
22. wheel identification equipment according to claim 16, wherein:
The response signal that transceiver sends comprises the data of same size; And
With different time gaps, transceiver repeatedly sends response signal separately repeatedly.
23. an inflation pressure of tire check implement comprises:
Be separately positioned on first and second pressure sensors on first and second wheels of vehicle, each pressure sensor all is used for the inflation pressure that sensing is installed to a tire that is associated on first and second wheels, and the tire pressure information of the inflation pressure of the tire that is associated that senses of output expression;
Be separately positioned on first and second transceivers on first and second wheels of vehicle, each transceiver all is used to receive energizing signal and sends response signal in response to receiving energizing signal, and this response signal is passed on the tire pressure information of being exported by one of first and second pressure sensors that are associated;
Be used to send the flip flop equipment of energizing signal, this flip flop equipment is arranged on the car body of vehicle with the different distance of distance transceiver, makes that the intensity at the energizing signal at transceiver place differs from one another;
Be used to receive the receptor of the response signal that sends by transceiver;
The wheel identifier that is operably connected with receptor, for each response signal that receptor receives, this wheel identifier is discerned its wheel that is provided with the transceiver that sends response signal; And
The tire pressure determiner that is operably connected with receptor and wheel identifier, each response signal that receives for receptor, the tire pressure information that this tire pressure determiner is passed on based on response signal is determined the inflation pressure of tire, and this tire is set on the same wheel with the transceiver that sends response signal;
Wherein:
Each transceiver all has transformable receiver sensitivity, and receives the energizing signal that flip flop equipment was sent with the higher receiver sensitivity value;
In response to receiving energizing signal, each transceiver all extremely changes its receiver sensitivity than low value from high value;
After receiving energizing signal, flip flop equipment further sends the inspection signal;
Each transceiver is all determined its reception behavior in lower receiver sensitivity value acceptace inspection signal;
Each transceiver is all determined departure time according to determined reception behavior, and sends response signal at determined departure time;
At different time of receptions, receptor receives the response signal by transceiver sent; And
For each response signal that receptor receives, wheel identifier receives the time of reception of response signal based on receptor, discerns the wheel that it is provided with the transceiver that sends response signal.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-197497 | 2005-07-06 | ||
| JP2005197497 | 2005-07-06 | ||
| JP2005197497A JP4175348B2 (en) | 2005-07-06 | 2005-07-06 | Wheel position detecting device and tire air pressure detecting device having the same |
| JP2005198703 | 2005-07-07 | ||
| JP2005-198703 | 2005-07-07 | ||
| JP2005198703A JP4186962B2 (en) | 2005-07-07 | 2005-07-07 | Wheel position detecting device and tire air pressure detecting device having the same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101214022A Division CN100570304C (en) | 2005-07-06 | 2006-07-06 | Wheel identification equipment and utilize the inflation pressure of tire checkout equipment of function of wheel identification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101417590A CN101417590A (en) | 2009-04-29 |
| CN101417590B true CN101417590B (en) | 2011-05-18 |
Family
ID=37597292
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101660554A Expired - Fee Related CN101417590B (en) | 2005-07-06 | 2006-07-06 | Wheel identifying apparatus and tire inflation pressure detecting apparatus with function of wheel identification |
| CNB2006101214022A Expired - Fee Related CN100570304C (en) | 2005-07-06 | 2006-07-06 | Wheel identification equipment and utilize the inflation pressure of tire checkout equipment of function of wheel identification |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101214022A Expired - Fee Related CN100570304C (en) | 2005-07-06 | 2006-07-06 | Wheel identification equipment and utilize the inflation pressure of tire checkout equipment of function of wheel identification |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4175348B2 (en) |
| CN (2) | CN101417590B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101417590A (en) | 2009-04-29 |
| CN100570304C (en) | 2009-12-16 |
| JP2007015491A (en) | 2007-01-25 |
| CN1892199A (en) | 2007-01-10 |
| JP4175348B2 (en) | 2008-11-05 |
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