CN202151992U - Tire air pressure monitoring system - Google Patents
Tire air pressure monitoring system Download PDFInfo
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- CN202151992U CN202151992U CN2011201922785U CN201120192278U CN202151992U CN 202151992 U CN202151992 U CN 202151992U CN 2011201922785 U CN2011201922785 U CN 2011201922785U CN 201120192278 U CN201120192278 U CN 201120192278U CN 202151992 U CN202151992 U CN 202151992U
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- monitoring system
- pressure monitoring
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- tire pressure
- tire
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Abstract
The utility model provides a tire air pressure monitoring system which comprises sensing transmitters respectively installed in automobile tires and a receiving and display system installed in an automobile. On the premise of increasing a signal content assessment unit, the tire air pressure monitoring system can finish the automatic identification function through calculating the signal content characteristic values; and as for either preinstalled tires before leaving the factory or repaired tires after leaving the factory, the automatic tire position identification function of the real tire air pressure monitoring system can be realized without the operation of a driver.
Description
Technical field
The utility model relates to the vehicle electronics security fields, relates in particular to a kind of tire pressure monitoring system.
Background technology
Existing tire pressure monitoring system comprises two parts: be installed in sensing transmitter and the reception telltale (receive the signal of sensing transmitter emission and divide tire to show) that is arranged in the car in each motor tire (branch front, rear, left and right).Each sensing transmitter all has an identity coding parameter, receives telltale and confirms the parameter which sensing transmitter (its corresponding tire) is sent according to the identity coding parameter of establishing in advance.Yet motor tire need be on the move, and the sensing transmitter identity coding parameter that receives the telltale stored so just need be revised along with the change of tire location again; On the other hand, do not store the identity coding parameter, just need corresponding identity coding parameter be set by the position, front, rear, left and right if receive in the telltale.
For originally having stored the reception telltale of identity coding parameter, after No. 1 sensing transmitter that is installed in left front tire transmits, receive telltale and just No. 1 parameter is presented at the left front tire position.Be transferred to when right back when left front tire, receive telltale and still can No. 1 parameter be presented at the left front tire position, at this moment just need in the reception telltale, No. 1 parameter adjustment be set to the right rear fire position.To this situation, existing solution has following several kinds:
Scheme one, manual in receiving telltale, the input is provided with the identity coding parameter.
Scheme two adopts the method for artificial venting identification that the identity coding parameter is set.When by hand certain position being set, receive telltale and wait for that correspondence bleeds a tire, this tire sends signals such as venting signal and identity coding parameter during venting, directly this identity coding parameter is arranged on this position after the reception of reception telltale.
Scheme three adopts the dedicated radio frequency transceiver, and first opsition dependent excites and read the identity coding parameter of each tire in proper order, is input to receive telltale (or car running computer) again.
Scheme four, the low frequency wake-up method is installed low-frequency antenna near each tire, and each antenna all is connected respectively to the reception telltale, triggers the sensing transmitter emission parameter of each tire more in order respectively with low-frequency antenna, reaches identifying purpose.
Because tire pressure monitoring system will use with car basically all the life, several kinds of above-mentioned existing identity coding parametric techniques that are provided with have following shortcoming:
The manual plan of establishment of similar such scheme one, two, three all needs the professional step of a cover, needs the professional, operates cumbersomely, and terminal client is difficult to from line operate.And for motor plant, tire pressure monitoring system is installed in enormous quantities also needs the professional to operate, and cost is than higher.
The automatic identifying schemes of the employing low frequency wake-up of similar such scheme four; Because this scheme need increase wiring in the car; Cost is higher, and the battery service life of adopting the low frequency wake-up mode can reduce sensing transmitter, is unfavorable for long-term use and large-scale promotion.
Industry also has some, and other utilize the scheme of the locating wheel fetal position of direction sensor, but the location time needs Control of Automobile high speed original place to spin, and navigating mate is required very high (causing dizziness easily), and are therefore also also impracticable.
Therefore, the recognition methods of existing tire pressure monitoring system and tire location thereof is badly in need of improving.
The utility model content
The purpose of the utility model provides a kind of tire pressure monitoring system, is intended to solve existing tire pressure monitoring system complicated operation and the higher technological deficiency of cost.
For realizing above-mentioned utility model purpose; The utility model provides a kind of tire pressure monitoring system; It comprises sensing transmitter that is installed in respectively in each motor tire and the receiving and displaying system that is installed in the car; Said receiving and displaying system comprise central processing unit and respectively with central processing unit bonded assembly signal receiving circuit, be used for the signal content assessment unit of the signal content that the computing signal receiving circuit receives, said signal receiving circuit comprises a receiving wire.
Further, said signal receiving circuit is the RF acceptor circuit, and said receiving wire is the RF receiving wire.
Further, said system further comprises and central processing unit bonded assembly display unit, operation interface, data interface unit
Further, built-in acousto-optic warning unit in the said display unit.
Further, built-in data acquisition and change-over circuit, MCU, signal transmission circuit and emitting antenna in said each sensing transmitter.
Further, said receiving wire is a helical antenna.
Further, said signal content assessment unit comprises that content is carried out operational analysis and confirmed to launch the arithmetical circuit of the sensing transmitter installation site of this signal to the received signal.
Than prior art; The tire pressure monitoring system that the utility model provides is under the prerequisite that increases the signal content assessment unit; Just can accomplish automatic recognition function through the signal calculated content characteristic values; Prepackage tire before no matter dispatch from the factory or dispatch from the factory after repairing, navigating mate need not operated the automatic recognition function of the tire location that just can realize real tire pressure monitoring system.
Description of drawings
Fig. 1 is the structural representation of the tire pressure monitoring system that provides of the utility model preferred embodiment.
Fig. 2 is the structural representation of the receiving and displaying system that relates to of the utility model.
Fig. 3 is the diagram of circuit of the tire location automatic identifying method preferred embodiment that relates to of the utility model.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Shown in Fig. 1, the tire pressure monitoring system that the utility model preferred embodiment provides comprises two parts: be installed in the sensing transmitter 110,120,130,140 in each motor tire (comprising left front tire 11, right front fire 12, left rear tire 13, right rear fire 14) respectively and be installed in the receiving and displaying system 10 in the car.
Built-in data acquisition and change-over circuit, MCU (microcontroller), RF transmission circuit and emitting antenna etc. in described each sensing transmitter 110,120,130,140 because the structure of sensing transmitter belongs to the prior art category, are not given unnecessary details at this.Sensing transmitter carries out the data induction, gathers, launches, and in the present embodiment, adopts RF (radio frequency) signal to launch.The data of gathering and launching include but not limited to: temperature data, pressure data, acceleration information, status data, cell pressure data, identity coding data etc.Parameter such as acceleration information and cell pressure belongs to optional data.
In conjunction with referring to shown in Fig. 2; The main functions such as the receptions of RF signal, processing data and display alarm of accomplishing of receiving and displaying system 10, it comprise central processing unit 103 and respectively with central processing unit 103 bonded assembly RF acceptor circuits 101, signal content assessment unit 102, display unit 104, operation interface 105, data interface unit 106.Central processing unit 103 representative types can adopt MCU, can built-in acousto-optic warning unit in the display unit 104 etc.Signal content assessment unit 102 is used for the signal content that computing RF acceptor circuit 101 receives.
But because receiving and displaying system 10 processing RF signals, so also can integrated Reverse Sensor unit 107 in the receiving and displaying system 10 etc.Receiving and displaying system 10 receives and handles the data that each sensing transmitter 110,120,130,140 is launched.
Each sensing transmitter 110,120,130,140 is by certain time interval, transmitting RF signal separately during vehicle '.After receiving and displaying system 10 receives the signal that each sensing transmitter 110,120,130,140 sends; Confirm it is the data of tire of which position through the identity coding of discerning; Judge the situation of this tire through data handing, and report to the police accordingly, demonstration etc.
In certain embodiments, described tire pressure monitoring system is applicable to that sensing transmitter does not have the tire pressure monitoring system of battery.
The tire location automatic identifying method that above-mentioned tire pressure monitoring system adopts may further comprise the steps:
Step 31, signal content characteristic (sensing data, signal energy characteristic, the signal spectrum characteristic etc.) order of each sensing transmitter 110,120,130,140 of setting in central processing unit 103.Can in program, directly set, also can set with operation interface.Representative type, receiving wire are installed in the next door of automobile bottom, left front tyre 11, and through measuring, the integrated signal content characteristic order of each transmitter module that this position receives is confirmed;
Step 32, the signal of each sensing transmitter that RF acceptor circuit 101 will receive obtains content characteristic values after 102 computings of signal content assessment unit.Receive abundant number of times (the signal number of times of each sensing transmitter is the same), and add up respectively and obtain the signal content eigenwert, carry out serial arrangement according to the content characteristic values size;
Step 33 according to the signal content eigenwert order of each sensing transmitter that repeatedly receives and the content characteristic order contrast of step 31, is confirmed the position of sensing transmitter, and then is confirmed pairing tire location.
Get into the monitoring alarm program then, when tire pressure and other parameter occur reporting to the police when unusual and show the position of this tire.
In said method; Because the sensing transmitter signal content eigenwert that tire receives in the middle of motion fluctuates; Can not all stably obtain identical content characteristic order, so must just can obtain stable content characteristic values order through repeatedly repeated measurement at every turn.
The tire location automatic identifying method that the utility model relates to is also considered the change that causes signal content eigenwert order owing to environmental variations; And this change is unpredictable (or when first the installation sometimes; Not through measuring; Its signal content eigenwert order is unpredictable), therefore also comprise following " learning process ":
(1) first opsition dependent manually sets the identity parameter of sensing transmitter.Be positioned at such as 110 left front, 120 be positioned at right front, 130 be positioned at left back, 140 be positioned at right back;
(2) program is decided the signal content eigenwert order of each position according to above algorithm in motion;
(3) under the situation that environment does not change, the change of any tyre can be according to the signal content eigenwert order of confirming after, and identification reaches and confirms tire location automatically.
Each environmental turbulence all needs to use above-mentioned learning process to confirm signal content eigenwert order earlier.
Simultaneously, in the signal reception and computation process of receiving and displaying system 10, not to get a characteristics of signals that receives, but the overall characteristic of a plurality of signals.
The above is merely the preferred embodiment of the utility model, not in order to restriction the utility model.This method also is suitable for the mechanical tire pressure monitoring system of other many wheels.Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. tire pressure monitoring system; It comprises sensing transmitter that is installed in respectively in each motor tire and the receiving and displaying system that is installed in the car; It is characterized in that said receiving and displaying system comprise central processing unit and respectively with central processing unit bonded assembly signal receiving circuit, be used for the signal content assessment unit of the signal content that the computing signal receiving circuit receives, said signal receiving circuit comprises a receiving wire.
2. tire pressure monitoring system according to claim 1 is characterized in that, said signal receiving circuit is the RF acceptor circuit, and said receiving wire is the RF receiving wire.
3. tire pressure monitoring system according to claim 1 is characterized in that, further comprises and central processing unit bonded assembly display unit, operation interface, data interface unit.
4. tire pressure monitoring system according to claim 3 is characterized in that, built-in acousto-optic warning unit in the said display unit.
5. tire pressure monitoring system according to claim 1 is characterized in that, built-in data acquisition and change-over circuit, MCU, signal transmission circuit and emitting antenna in said each sensing transmitter.
6. tire pressure monitoring system according to claim 1 is characterized in that, said emitting antenna is a helical antenna.
7. tire pressure monitoring system according to claim 1 is characterized in that, said signal content assessment unit comprises that content is carried out operational analysis and confirmed to launch the arithmetical circuit of the sensing transmitter installation site of this signal to the received signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201922785U CN202151992U (en) | 2011-05-04 | 2011-06-09 | Tire air pressure monitoring system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120138059 | 2011-05-04 | ||
| CN201120138059.9 | 2011-05-04 | ||
| CN2011201922785U CN202151992U (en) | 2011-05-04 | 2011-06-09 | Tire air pressure monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN202151992U true CN202151992U (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201922785U Expired - Fee Related CN202151992U (en) | 2011-05-04 | 2011-06-09 | Tire air pressure monitoring system |
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| CN (1) | CN202151992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765304A (en) * | 2011-05-04 | 2012-11-07 | 沈德才 | Tyre pressure monitoring system and its automatic tyre location identification method |
-
2011
- 2011-06-09 CN CN2011201922785U patent/CN202151992U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765304A (en) * | 2011-05-04 | 2012-11-07 | 沈德才 | Tyre pressure monitoring system and its automatic tyre location identification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20140609 |