TPMS measures the position fixing system and the method for transmitter unit
Technical field
The present invention relates to position fixing system and the method for tire pressure monitoring system (TPMS, Tire Pressure Monitor System), relate in particular to position fixing system and method that TPMS measures transmitter unit.
Background technology
Progress and development along with society; Automobile has been an indispensable part during people live, produce; And be accompanied by the high performance of vehicle, the technological advance of high-comfortization; Safe, energy-conservation current stage development priority that just becomes of vehicle, country classifies automobile tire pressure monitoring system (TPMS) technology as auto electronics first in " automobile industry adjustment and development planning ".
Existing TPMS mainly contains external and built-in two kinds, and wherein external is exactly that the sensor in the TPMS transmitter unit is installed on the cranked tire valve, and this device is installed simple, but accuracy is relatively poor, is replaced by built-in giving gradually; Built-inly exactly sensor is installed in inside tires, directly monitors air pressure and temperature Change, this device precision is high, progressively becomes the main flow device of TPMS.
Yet in the existing TPMS use, the defective that its mounting means of measuring transmitter unit exists is following:
One, before the user uses, TPMS is measured transmitter unit and tire location binding, its shortcoming is when carrying out interchanging of tires, to need dismounting again to measure transmitter unit, operates very loaded down with trivial details.And after installation, in case tire location is obscured, the user can't judge that TPMS measures the transmitter unit position, can only reset once more.
Two, excite the binding positions process through inflation of tire, its shortcoming is if just in time there are a plurality of tires carrying out tire when binding simultaneously, then can disturb between mutually, and binding leads to errors.
Three, after the user changes the motor tire position; Need locate TPMS measurement transmitter unit through tire being charged and discharged fast gas; Thereby TPMS is measured transmitter unit and tire location is bound again, will make very trouble of operation like this, and cause the too small or hypertonia of tire pressure easily.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, the position fixing system and the method that provide a kind of TPMS to measure transmitter unit to simplify positioning action, strengthen anti-interference resistance, and the binding procedure of tire location and TPMS measurement transmitter unit is simple and convenient.
For realizing above-mentioned purpose; The present invention proposes following technical scheme: a kind of TPMS measures the position fixing system of transmitter unit; Said position fixing system comprises that TPMS receives display unit and TPMS measures transmitter unit, and said TPMS receives and is preset with the ID that the TPMS that matches measures transmitter unit in the display unit; Carrying out TPMS when measuring the transmitter unit location, can select to use inflation study, tire location exchanges or the mode of sign indicating number is measured transmitter unit with TPMS to low frequency and selected tire location is bound.
Further, when using native system for the first time, system default selects the mode of inflation study to carry out TPMS measurement transmitter unit and selected tire location is bound.
The present invention also provides a kind of TPMS to measure the localization method of transmitter unit, and it may further comprise the steps:
Step 1, receive at TPMS and to preserve the ID that measures transmitter unit with the TPMS of its coupling in the display unit in advance;
Step 2, when giving tire pressurization, the rf data bag when TPMS measures transmitter unit and sends pressurization comprises in this data packet that TPMS measures the ID of transmitter unit;
After step 3, TPMS reception display unit received the rf data bag of TPMS measurement transmitter unit transmission, TPMS received the ID of display unit according to the TPMS measurement transmitter unit that prestores, and judged whether the data into supporting TPMS measurement transmitter unit transmission;
If the judgement of step 4 TPMS reception display unit is that the TPMS that prestores measures the data that transmitter unit sends, the tire location of then pointing out selection to bind, and with this TPMS measurement transmitter unit and selected binding positions; Judge it is not that supporting TPMS measures the data that transmitter unit sends if TPMS receives display unit, then think interfering data, and with data packet discarding.
Further, said TPMS measurement transmitter unit can be bound with arbitrary tire location.
Said TPMS measures transmitter unit and periodically receives display unit transmission data packet to TPMS.
Another kind of TPMS provided by the invention measures the localization method of transmitter unit; When it is bound after tire location exchanges; Correct like original location information, then select to carry out binding positions again through the method that receives the binding position that directly exchanges TPMS measurement transmitter unit on the display unit at TPMS.
Further, said method of on TPMS reception display unit, directly exchanging the binding position of TPMS measurement transmitter unit comprises:
The position of two tires of a. selecting to exchange;
B. receive at TPMS and select to exchange the cooresponding tire location that TPMS measures transmitter unit and bound on the display unit.
The present invention also provides the third TPMS to measure the localization method of transmitter unit, and it may further comprise the steps:
Step 1, TPMS is received display unit measure transmitter unit, and receive at TPMS and to select to install the tire position that said TPMS measures transmitter unit on the display unit near a TPMS;
Step 2, TPMS receive display unit and send the low frequency signal that comprises its ID;
Step 3, said TPMS measure transmitter unit and respond said low frequency signal, and send the radiofrequency signal data packet that comprises ID of this TPMS measurement transmitter unit own and the TPMS reception display unit ID that receives;
Step 4, TPMS receive display unit the data packet that receives are detected, and the TPMS that will comprise the ID of its TPMS reception display unit own measures transmitter unit and tells, and this TPMS measurement transmitter unit and selected tire location are bound.
Further, in the step 4, if receiving display unit, TPMS in said data packet, do not detect the ID that comprises its TPMS reception display unit itself, then with this data packet discarding.
Said method is applicable to, obscure at tire, or more renew ID is not preset the TPMS that receives display unit into TPMS and measures transmitter unit the time tire location bind.
Said low frequency is applicable to the tire location binding under all situations to the mode of sign indicating number.
Compared with prior art, the position fixing system and the method for the TPMS transmitter unit that the present invention proposes need not measured transmitter unit through reinstalling TPMS, can overcome the defective of prior art, and the beneficial effect of its generation is:
One, when TPMS measurement transmitter unit is installed; Can supporting arbitrary TPMS be measured transmitter unit and the binding of arbitrary tire location; And when tire location was obscured, the TPMS that need not to reset measured transmitter unit, can directly bind again the mode of sign indicating number through LF; Wrong binding relationship is before also just deleted, and makes that localization method operation of the present invention is more simple and easy.
Two, when binding TPMS measurement transmitter unit, have one or more other TPMS measurement transmitter units binding the problem that causes interference simultaneously owing to having solved, therefore, the present invention has better resisting interference property;
Three, owing to receiving display unit, can move TPMS; After the user changes the motor tire position or other new TPMS is installed and measures transmitter unit (not being supporting other this product TPMS measuring unit), only need hold TPMS reception telltale and measure transmitter unit, carry out LF with it and can bind with tire location sign indicating number near TPMS; Do not need by other accessory equipment; And do not have at tire also not influence this function under the situation of pressure, therefore, the present invention is flexible to operation.
Description of drawings
Fig. 1 is that the present invention adopts the method for inflation study to carry out the diagram of circuit that TPMS measures transmitter unit and tire location binding;
Fig. 2 is that the present invention adopts LF that the method for sign indicating number is carried out the diagram of circuit that TPMS measures transmitter unit and tire location binding;
Fig. 3 is that the method that the present invention adopts tire location to exchange is carried out the diagram of circuit that tire location is bound.
The specific embodiment
To combine accompanying drawing of the present invention below, the technical scheme of the embodiment of the invention will be carried out clear, complete description.
The TPMS (tire pressure monitoring system is hereinafter to be referred as TPMS) that the present invention discloses measures the position fixing system of transmitter unit, and it comprises that TPMS receives display unit and measures transmitter unit with at least one TPMS; Said TPMS receives display unit and is arranged in the automobile (also can from automobile, take out), comprises radio frequency (RF) receptor, display equipment; Storage equipment; Low frequency (LF) projector, said TPMS measures transmitter unit and is installed in the tire of automobile, comprises sensor; Radiofrequency launcher and low frequency receptor, said TPMS reception display unit is measured transmitter unit with each TPMS all has the ID (identification number) of self.
Before the TPMS system dispatches from the factory, TPMS receives will preserve the ID that the TPMS that matches with it measures transmitter unit in advance in the display unit, and at this moment, the position of measuring transmitter unit and motor tire does not also bind together.
Next; Carrying out TPMS when measuring transmitter unit and binding with the motor tire position, provide three kinds of binding methods to supply users to select in the system of the present invention, the user can reach the use habit of oneself according to specific condition of service; Select suitable tire location binding method to bind; These three kinds of methods comprise inflation study, and tire location exchange and low frequency will be introduced these three kinds of binding methods respectively below to the mode of sign indicating number.
Embodiment one
As shown in Figure 1, adopt the mode of inflation study to bind in the present embodiment, specifically comprise the steps:
Step 1, when the user gives tire pressurization; TPMS measures the situation that transmitter unit detects tire pressurization; And send RF (Radio Frequency, radio frequency) data packet through radiofrequency launcher and receive display unit to TPMS, comprise the parameters such as ID of said measurement transmitter unit in this data packet;
Because it is periodically to receive display unit to TPMS to send data that TPMS measures transmitter unit, therefore, receives emission at TPMS and does not receive data because of some specific factor, also can not influence user binding TPMS and measure transmitter unit and tire location.
After step 2, TPMS reception display unit received the data packet of TPMS measurement transmitter unit transmission, the TPMS reception display unit basis ID of the measurement transmitter unit of preservation in advance judged whether the data into supporting TPMS measurement transmitter unit transmission;
If receiving display unit, step 3 TPMS judges that its data packet that receives is that supporting TPMS measurement transmitter unit sends; The tire of then pointing out the user to select to bind exists, and TPMS reception display unit is just pointed out the user that TPMS is measured transmitter unit and is tied to corresponding tire location; Bind this position and TPMS measurement transmitter unit then installation site on the automobile (as left front, right front, left back, right back);
If receiving display unit, TPMS judges that its data packet that receives is not to measure transmitter unit by supporting TPMS to send, and then thinks interfering data, with data packet discarding.
In above-mentioned steps; If it is to pack into to use for the first time in the tire that TPMS measures transmitter unit; After then giving inflation of tire, the user only need select in receiving display unit can carry out behind the position of tire that said TPMS measures transmitter unit and selected tire location is bound.
Embodiment two
As shown in Figure 2, present embodiment adopts LF (Low Frequency, low frequency) that the mode of sign indicating number is bound, and the user accomplishes through following steps when carrying out TPMS measurement transmitter unit and tire location binding:
Step 1, TPMS is received display unit measure transmitter unit near TPMS; Receive the tire position of selecting to install this TPMS measurement transmitter unit on the display unit at TPMS; Receive display unit through TPMS then and send the LF signal, and comprise the ID of said TPMS receiving element in this LF signal to this TPMS measurement transmitter unit.
Step 2, said TPMS are measured transmitter unit and are responded said LF signal, and send the RF data packet and receive display unit to TPMS, and the ID that comprises said measurement transmitter unit in this RF data packet and the TPMS that receives receive the ID of display unit.
After step 3, TPMS reception display unit are received said RF data packet; Detect the ID that whether has comprised its TPMS reception display unit itself in this RF data packet; And whether the ID of the TPMS that comprises in RF data packet measurement transmitter unit is the ID that prestores; If then this TPMS is measured transmitter unit and the binding of this tire location, otherwise bag is abandoned.
Because it is periodically to receive display unit to TPMS to send the RF data packet that TPMS measures transmitter unit; Therefore; In step 3; Said TPMS receive RF data packet that display unit receives both comprised by its near TPMS measure the RF data packet (this data packet is the data packet in the said step 2) that transmitter unit sends, comprised that also other TPMS measure the data that TPMS measures the ID of transmitter unit itself that include only that transmitter units periodically send, therefore; In step 3, need TPMS to receive the data packet that display unit will comprise itself ID and detect.
Be contained in the left front position of car if any individual tire; The user receives at TPMS and selects left front position on the display unit; Measure transmitter unit near TPMS then; To sign indicating number, TPMS receives the ID that display unit has obtained said measurement transmitter unit, just the measurement transmitter unit of this ID is bound with left front position tire mutually then through LF.
The method that LF in the present embodiment binds sign indicating number is applicable to binds use in any case; Comprise that TPMS measures transmitter unit and packs into and use for the first time in the tire or tire location is changed or obscured, and changed new tyre TPMS and measured under the situation of transmitter unit and all can directly use.
Embodiment three
Among above-mentioned two embodiment; In the TPMS use; Again bind as needing behind the location swap of tire, and under the correct situation of original binding location information, then can bind the method realization binding again of position through more more easy directly exchange; As shown in Figure 3, the concrete steps that the method for this direct employing place-exchange is bound are:
1. the user receives the position of two tires that selection need exchange on the display unit at TPMS;
2. user's chosen position function of exchange, the binding relationship of two tire locations and TPMS being measured transmitter unit exchanges;
Then accomplished the binding again of two TPMS being measured transmitter unit 3.TPMS receive display unit.
In actual use, the user can select different localization methods or three kinds of localization methods to be used in combination according to condition of different, measures transmitter unit like TPMS and packs into when using for the first time in the tire; Can adopt the method for inflation study to bind; And when tire location is changed, when especially tire location is obscured, can select to adopt LF that the method for sign indicating number is bound; Method as adopting inflation study this moment is bound, and also will inflate again tire.
Technology contents of the present invention and technical characterictic have disclosed as above; Yet those of ordinary skill in the art still maybe be based on teaching of the present invention and announcements and are done all replacement and modifications that does not deviate from spirit of the present invention; Therefore; Protection domain of the present invention should be not limited to the content that embodiment discloses, and should comprise various do not deviate from replacement of the present invention and modifications, and is contained by the present patent application claim.