CN114193983B

CN114193983B - Identification structure and positioning method of vehicle tire sensor

Info

Publication number: CN114193983B
Application number: CN202111625442.1A
Authority: CN
Inventors: 闵俊杰; 周志达; 尤佳迪; 林文浩
Original assignee: Zhilun Hangzhou Technology Co ltd
Current assignee: Zhilun Hangzhou Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2024-04-12
Anticipated expiration: 2041-12-28
Also published as: CN114193983A

Abstract

The invention relates to an identification structure and a positioning method of a vehicle tire sensor, which are particularly suitable for a situation that a commercial vehicle has multiple wheel positions and has multiple wheels, and the wheel positions of the sensors are primarily judged by arranging an excitation antenna, connecting the excitation antenna with a signal transceiver through a connecting wire, controlling the excitation antenna part to send out excitation signals by the signal transceiver, exciting the sensors in the tires, receiving feedback signals of the sensors by the excitation antenna, transmitting the feedback signals back to the signal transceiver, judging the sensor numbers according to the excitation signals, and realizing the wheel position primary judgment of the sensors; and uploading the data received by the signal transceiver to a cloud server, further processing the data by the cloud server, and sending the processing result to an application terminal to finish the accurate position identification of each sensor.

Description

Identification structure and positioning method of vehicle tire sensor

Technical Field

The invention relates to the field of automobiles, in particular to an identification structure and a positioning method of a vehicle tire sensor.

Background

In the current vehicles, sensors are often installed in the tires so as to monitor the real-time state of the tires of the vehicles and ensure the running safety of the vehicles. Wherein, because the sensor and the tyre are in one-to-one correspondence, the matching of the sensor and the tyre needs to be completed; otherwise, even if the information of the sensor is received, the information of which tire cannot be judged.

The existing matching of the sensor and the tire comprises code scanning matching, automatic matching of detected acceleration, one-to-one matching of an antenna and the tire, matching of detected tire pressure and the like. The mode of code scanning matching is complicated, and the effect of re-matching can be influenced after the two-dimensional codes on the surface of the tire are worn; particularly for large vehicles, the state monitoring of the tires of the large vehicles is very important, but the conventional code scanning matching method is time-consuming and labor-consuming due to frequent tire replacement; on the other hand, because the tire is replaced by the inverted tire in the tire replacing process, namely the tire at the position with high tire abrasion is replaced to the position with low tire abrasion, the front tire is generally replaced backwards, and the difficulty of matching the tire scanning codes is further increased. For automatic matching of detected accelerations, such as the solution described in patent CN201410015336, which is mainly applicable to single-wheeled vehicles, it is not applicable to large freight vehicles with complex wheels. For one-to-one matching of antennas and tires, such as the solution described in patent CN201180006751, the solution is also only suitable for single-wheeled vehicles, and for vehicles with complex wheels, adjacent antennas can interfere with each other, resulting in inaccurate detection results. For detecting tire pressure matching, such as the scheme described in patent CN202010865768, in which a signal with a lower tire pressure signal average value is considered to be from an outside tire, and a signal with a higher tire pressure signal average value is considered to be from an outside tire, and accordingly matching of a sensor and a tire is completed, in this method, it is difficult to ensure accuracy of matching of the sensor and the tire because the tire pressure is greatly affected by the external environment. Therefore, a convenient and quick identification structure and positioning method for a vehicle tire sensor are needed.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides an identification structure and a positioning method of a vehicle tire sensor.

In order to solve the problems, the invention adopts the following technical scheme:

the identification structure of the vehicle tyre sensor comprises an excitation antenna, a connecting wire, a signal transceiver, a cloud server and an application terminal; wherein the excitation antenna is arranged at a position close to the tyre of the vehicle; the connecting wire is arranged between the exciting antenna and the signal transceiver; the signal transceiver is also connected with a cloud server, and the cloud server is also connected with the application terminal.

Further, the exciting antenna is used for transmitting and receiving signals, and the exciting antenna is arranged corresponding to a single wheel or a complex wheel; for single wheels, the excitation antenna is arranged close to one single wheel or arranged between two single wheels on the same side; for the complex wheel, the excitation antenna is arranged corresponding to each row of complex wheels or is arranged at a position between two rows of complex wheels.

A method of positioning a vehicle tire sensor comprising the steps of:

step 1: the signal transceiver receives the starting signal and starts the exciting antenna;

step 2: performing antenna mapping initialization operation;

step 3: the signal transceiver judges whether a starting condition is met, and the starting condition is whether the speed per hour of the vehicle reaches a set value X; if the starting condition is met, entering the next step; otherwise, returning to the step 3;

Step 4: exciting the exciting antennas for the first time, starting each exciting antenna in sequence, and sending out exciting signals according to the set strongest exciting intensity; wherein numbers LF (1) -LF (n) are arranged corresponding to each excitation antenna;

step 5: the signal transceiver acquires first excitation data;

step 6: the signal transceiver completes the primary positioning binding of the sensor and the tire according to the primary excitation data, acquires an initial wheel position table, and uploads the primary excitation data and the initial wheel position table to the cloud server for storage;

step 7: the method comprises the steps of controlling the excitation signal intensity of an excitation antenna to change, enabling a signal transceiver to accurately position a wheel position of a sensor in a vehicle tire according to excitation feedback change of the sensor caused by intensity change of an excitation signal, finishing accurate binding of the sensor and the wheel position, and updating a wheel position data table;

step 8: judging whether the updated wheel bit table data is fully filled or not; if the vehicle information is fully filled, the control signal transceiver acquires the vehicle information acquired by the sensor, carries out supplementary data processing on the vehicle information, screens data, uploads the processed vehicle information data and an updated wheel position data table to the cloud server, and enters the step 9; if not, ending the step;

Step 9: the cloud server receives the vehicle information data and completes data filling according to the latest wheel position data table; and feeding back the data filling result to the application terminal, and ending the step.

Further, the process of obtaining the initial wheel position table in the step 6 includes:

step 61: acquiring first excitation data and acquiring setting position information of an excitation antenna;

step 62: according to the first excitation data, completing filling of an initial wheel position table; the fixed value in the wheel position table is the position of the tire, and the filled data is the number of the sensor;

step 63: judging whether the initial wheel position table is filled up or not; if the initial wheel list is not fully filled, the step 64 is entered; otherwise, directly enter step 65;

step 64: the initial wheel bit table is not fully filled, and whether the wheel bit without the filled data has corresponding original sensor wheel bit data is judged; if the corresponding original sensor wheel bit exists, filling the original sensor wheel bit data into the corresponding vacant wheel bit, marking the vacant wheel bit as pending data, and entering a step 65; if the original sensor data does not exist, the step 66 is entered;

step 65: judging whether an initial wheel position table after supplementing original wheel position data is fully filled; if not, go to step 66; if the filling is full, the step 67 is entered;

Step 66: acquiring original sensor number data in an original wheel position table, comparing the original sensor number data with sensor number data filled in the existing initial wheel position table, screening out non-repeated original sensor number data, sequentially filling the non-repeated original sensor number data into vacant wheel positions in the initial wheel position table, and marking the vacant wheel positions as to-be-determined data until the initial wheel position table is filled;

step 67: and obtaining an initial wheel position table, and ending the step.

Further, the accurate positioning of the wheel in the step 7 includes the following steps:

step 71: the signal transceiver judges whether the starting condition is met; the starting condition is whether the speed per hour of the vehicle reaches a set value Y; if the starting condition is met, starting a timer, and entering the next step; otherwise, the timer is stopped and the process returns to step 71;

step 72: determining an activated excitation antenna LF (m), wherein m epsilon (1, n), and acquiring a setting part of the excitation antenna LF (m);

step 73: judging whether the excitation antenna LF (m) is arranged corresponding to a single wheel or a complex wheel according to the arrangement position of the excitation antenna LF (m); if the excitation antenna LF (m) is set corresponding to a single wheel, the step 74 is entered; if the excitation antenna LF (m) is set corresponding to the complex wheel, the step 75 is entered;

Step 74: the excitation antenna LF (m) is arranged corresponding to a single wheel, and the signal transceiver controls the corresponding excitation antenna to periodically emit an excitation signal and changes the intensity of the excitation signal; the sensor receives the excitation signal and sends out excitation feedback, compares the excitation feedback received by the signal transceiver, completes the single wheel position calibration process, and enters step 76;

step 75: the excitation antenna LF (m) is arranged corresponding to the complex wheel, and the signal transceiver controls the corresponding excitation antenna to periodically emit an excitation signal and changes the intensity of the excitation signal; the sensor receives the excitation signal and sends out excitation feedback, compares the excitation feedback received by the signal transceiver, completes the complex wheel position calibration processing, and enters step 76;

step 76: judging whether the excitation antennas LF (1) -LF (n) are all used for completing wheel alignment; if not, determining the next activated excitation antenna, and returning to step 71; if the rotation calibration process of all the excitation antennas is completed, step 77 is entered;

step 77: analyzing the wheel bit data and updating the wheel bit data table;

step 78: and (5) finishing accurate positioning of the wheel position and ending the step.

Further, the single wheel alignment process in step 74 includes the following steps:

Step 741: the signal transceiver controls the exciting antenna with the number LF (m) to emit an exciting signal, wherein m epsilon (1, n); acquiring the setting part of the exciting antenna corresponding to the single wheel;

step 742: judging whether the excitation antenna LF (m) is arranged corresponding to one row of single wheels or two rows of single wheels; if the excitation antenna LF (m) is set corresponding to a row of single wheels, step 743 is entered; if the excitation antenna LF (m) is set corresponding to two rows of single wheels, then go to step 744;

step 743: the excitation antenna LF (m) is arranged corresponding to a row of single wheels, and whether the excitation antenna receives excitation feedback of the sensor or not is judged, wherein the excitation feedback comprises the serial number of the sensor; if excitation feedback of the sensor is received, the sensor is considered to be a wheel position corresponding to the set position of the excitation antenna LF (m); if no excitation feedback is received from the sensor, then step 748 is entered;

step 744: the excitation antenna LF (m) is arranged corresponding to two rows of single wheels, the front wheel calibration mark positions are obtained, and whether the front wheels complete the calibration of the wheel positions and the sensors is judged according to the front wheel calibration mark positions; if the front wheel does not complete the calibration, step 745 is entered; if the front wheel is calibrated, go to step 746;

step 745: the front wheel does not complete calibration judgment, and whether the excitation antenna LF (m) receives excitation feedback of the sensor is judged; if the excitation feedback of the sensor is received, the sensor is considered as a front wheel sensor of the set part of the excitation antenna LF (m), the front wheel calibration mark position is set to be completed, and the step 748 is entered; if no excitation feedback is received from the sensor, step 748 is entered;

Step 746: the front wheel finishes the calibration, the rear wheel calibration mark position is obtained, and whether the rear wheel finishes the calibration is judged according to the rear wheel calibration mark position; if the rear wheel is not calibrated, entering a step 747; if the rear wheel is calibrated, entering step 7410;

step 747: the rear wheel does not complete calibration, and whether the excitation antenna LF (m) receives the excitation feedback quantity of the sensor is judged; if the received sensor excitation feedback signal is one, then step 748 is entered; if two sensor excitation feedback signals are received, acquiring a sensor different from a front wheel sensor in the two sensors, and considering the sensor as a rear wheel sensor at a position where an excitation antenna LF (m) is arranged, setting a rear wheel calibration marker bit as complete, and entering a step 7410;

step 748: setting the excitation signal intensity of an excitation antenna in the next excitation process to be enhanced;

step 749: judging whether the intensity of the enhanced excitation signal exceeds the set strongest excitation intensity; if the set maximum excitation intensity is exceeded, the process proceeds to step 7410; otherwise, returning to step 741;

step 7410: and (5) finishing single-wheel position calibration processing, and ending the steps.

Further, the complex wheel position calibration process in the step 75 includes the following steps:

Step 751: the signal transceiver controls the exciting antenna with the number LF (m) to emit an exciting signal, wherein m epsilon (1, n); acquiring the setting part of the exciting antenna corresponding to the complex wheel;

step 752: the excitation antenna LF (m) is arranged corresponding to the complex wheel, and whether the excitation antenna receives excitation feedback of the sensor is judged; if excitation feedback of the sensor is received, step 753 is entered; otherwise, go to step 755;

step 753: the excitation antenna receives excitation feedback of the sensor, acquires an inner wheel calibration marker position of the excitation antenna LF (m), and judges whether an inner wheel calibration process is finished according to the inner wheel calibration marker position; if the inner wheel calibration process is not completed, starting inner wheel calibration processing, and entering step 755 after the inner wheel calibration is completed; if the inner wheel calibration process is completed, go to step 754;

step 754: the inner wheel calibration process is completed, the outer wheel calibration marker position of the excitation antenna LF (m) is obtained, and whether the inner wheel calibration process is completed or not is judged according to the outer wheel calibration marker position; if the outer wheel calibration process is completed, step 757 is entered; otherwise, starting the outer wheel calibration process, and after the outer wheel calibration is completed, entering step 755;

step 755: setting the excitation signal intensity of an excitation antenna in the next excitation process to be enhanced;

Step 756: judging whether the intensity of the enhanced excitation signal exceeds the set strongest excitation intensity; if the set maximum excitation intensity is exceeded, step 757 is entered; otherwise, return to step 751;

step 757: and (5) finishing the complex wheel position calibration processing, and ending the steps.

Further, the inner wheel calibration process in step 753 includes the following steps:

step 7531: judging whether the excitation antenna LF (m) is arranged corresponding to one row of complex wheels or two rows of complex wheels according to the arrangement position of the corresponding complex wheels of the excitation antenna LF (m); wherein the corresponding two rows of complex wheels are arranged, and the exciting antenna is arranged between the two rows of complex wheels; if the excitation antenna is set corresponding to a row of complex wheels, step 7532 is entered; if the excitation antenna is arranged corresponding to the two rows of complex wheels, step 7533 is performed;

step 7532: the exciting antenna is arranged corresponding to a row of complex wheels, a sensor corresponding to one received exciting feedback signal is marked as an inner wheel sensor, an inner wheel calibration mark bit is set as complete, and the steps are finished;

step 7533: the excitation antennas are arranged corresponding to the two rows of complex wheels, and the number of excitation feedback signals is judged; if the excitation feedback signal is one, setting the inner wheel calibration mark position as incomplete, and ending the step; if the number of the excitation feedback signals is two, the sensors corresponding to the two excitation feedback signals are marked as inner wheel sensors, the inner wheel calibration mark position is set to be finished, and the step is finished.

Further, in the step 754, the outer wheel calibration process includes the following steps:

step 7541: judging whether the excitation antenna LF (m) is arranged corresponding to one row of complex wheels or two rows of complex wheels according to the arrangement position of the corresponding complex wheels of the excitation antenna LF (m); if the excitation antenna is arranged corresponding to a row of complex wheels, step 7542 is performed; if the excitation antenna is arranged corresponding to the two rows of complex wheels, step 7543 is performed;

step 7542: the excitation antenna is arranged corresponding to a row of complex wheels, and the number of excitation feedback signals is judged; if the signal is an excitation feedback signal, the inner wheel of the row of compound wheels is excited, the outer wheel calibration mark position is set to be unfinished, and the step is finished; if the two excitation feedback signals are the two excitation feedback signals, comparing the two sensors corresponding to the two acquired excitation feedback signals with the inner wheel sensor of the row of compound wheels, setting different sensors as outer wheel sensors, setting the outer wheel calibration mark position as finished, and ending the steps;

step 7543: the excitation antennas are arranged corresponding to the two rows of complex wheels, and the number of excitation feedback signals is judged; if the excitation feedback signals are two or three, the fact that the outer wheels of the two rows of compound wheels are not all excited is indicated, the outer wheel calibration mark positions are set to be incomplete, and the step is ended; if the excitation feedback signals are four, comparing the sensors corresponding to the four excitation feedback signals with the two inner wheel sensors of the two rows of compound wheels, setting the different two sensors as outer wheel sensors, setting the outer wheel calibration mark position as finished, and ending the steps.

Further, in the step 77, the process of analyzing the wheel bit data includes the following steps:

step 771: determining an resolved excitation antenna LF (m); acquiring the setting part of the excitation antenna LF (m), and judging whether the setting part is between two rows of complex wheels; if the set position of the excitation antenna LF (m) is between two rows of complex wheels, then it is necessary to further determine the front-back relationship of the two rows of complex wheels, and step 772 is performed; otherwise, go to step 775;

step 772: obtaining an exciting antenna LF (m ') with public data between an inner wheel sensor and an outer wheel sensor calibrated with the exciting antenna LF (m), and judging whether the exciting antenna LF (m ') is positioned at the front side or the rear side of the exciting antenna LF (m) by m ' ∈ (1, n); if the excitation antenna LF (m') is located on the front side of the excitation antenna LF (m), then step 773 is entered; if the excitation antenna LF (m') is located at the rear side of the excitation antenna LF (m), then step 774 is entered;

step 773: the excitation antenna LF (m') is positioned at the front side of the excitation antenna LF (m), the public data part in the excitation antenna LF (m) is the front row complex wheel data of the two rows of complex wheels corresponding to the public data part in the excitation antenna LF (m), the non-public data part in the excitation antenna LF (m) is the rear row complex wheel data of the two rows of complex wheels corresponding to the non-public data part in the excitation antenna LF (m), and the corresponding wheel positions in the wheel position table are updated according to the complex wheel position calibration processing result in the step 75, and the step 776 is entered;

Step 774: the excitation antenna LF (m') is positioned at the rear side of the excitation antenna LF (m), the public data part in the excitation antenna LF (m) is the rear row complex wheel data of the two rows of complex wheels corresponding to the public data part, the non-public data part in the excitation antenna LF (m) is the front row complex wheel data of the two rows of complex wheels corresponding to the non-public data part, and the corresponding wheel positions in the wheel position table are updated according to the complex wheel position calibration processing result in the step 75, and the step 776 is entered;

step 775: if the set position of the excitation antenna LF (m) is not set between the two rows of complex wheels, updating the corresponding wheel bit in the wheel bit table according to the wheel bit calibration result of the excitation antenna LF (m), including single wheel bit calibration and complex wheel bit calibration, and entering step 776;

step 776: judging whether analysis is completed for each excitation antenna; if all the analysis is completed, go to step 777; otherwise, determining the next resolved excitation antenna, and returning to step 771;

step 777: and (3) completing the analysis of all the excitation antennas, acquiring an updated wheel position table, and ending the steps.

The beneficial effects of the invention are as follows:

the exciting antenna is arranged and connected with the signal transceiver through a connecting wire, the signal transceiver controls the exciting antenna part to emit an exciting signal to excite the sensor in the tire, the feedback signal of the sensor is received by the exciting antenna and transmitted back to the signal transceiver, and the sensor number is judged according to the feedback signal, so that the wheel position judgment of the sensor is realized;

The data received by the signal transceiver is uploaded to the cloud server, the cloud server further processes the data, the processing result is sent to the application terminal, and the application terminal feeds back the processing result to a vehicle driver; real-time data transmission and display are realized;

exciting a sensor through an excitation antenna, obtaining the number of the sensor according to an excitation feedback signal, and obtaining the wheel position of the sensor by judging the position of the excitation antenna;

gradually increasing an excitation signal of an excitation body antenna through wheel position calibration processing, and primarily judging whether the wheel position of a sensor is an inner wheel or an outer wheel according to feedback of the sensor; and then the server tracks the braking condition of the vehicle and the temperature of the sensor for a long time, and corrects the tire position of the sensor.

For continuous three rows and more of complex wheels, the exciting antennas are arranged between two rows of complex wheels, the common area is judged through wheel position data analysis, and the wheel position of the sensor is accurately judged by the least exciting antennas by combining the judgment of the inner and outer wheels.

Drawings

Fig. 1 is a schematic diagram of an exciting antenna arrangement part on a tractor according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of an exciting antenna arrangement part on a dump truck according to a first embodiment of the invention;

FIG. 3 is a schematic illustration of a trailer wheelset in accordance with one embodiment of the present invention;

FIG. 4 is a schematic view of an excitation antenna arrangement location on a trailer according to a first embodiment of the present invention;

FIG. 5 is a flowchart of a positioning method according to a first embodiment of the present invention;

fig. 6 is an antenna mapping initialization operation according to a first embodiment of the present invention;

FIG. 7 is a flowchart of an initial wheel position table acquisition according to a first embodiment of the present invention;

FIG. 8 is a flow chart of accurate wheel position positioning of a sensor according to a first embodiment of the present invention;

FIG. 9 is a flowchart of the initialization of the supplemental data timer according to the first embodiment of the present invention;

FIG. 10 is a flow chart of a complex wheel alignment calibration process according to a first embodiment of the present invention;

FIG. 11 is a flow chart of the analysis of the rotation data according to the first embodiment of the present invention;

FIG. 12 is a flowchart of the supplemental data processing according to the first embodiment of the present invention;

fig. 13 is a flow chart of the cloud server supplementary data according to the first embodiment of the invention.

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

Embodiment one:

1-4, an identification structure of a vehicle tire sensor comprises an excitation antenna, a connecting wire, a signal transceiver, a cloud server and an application terminal; wherein the excitation antenna is arranged at a position close to the tyre of the vehicle; the connecting wire is arranged between the exciting antenna and the signal transceiver; the signal transceiver is also connected with a cloud server, and the cloud server is also connected with the application terminal.

The excitation antenna is used for transmitting and receiving signals, wherein the transmitted signals are received by a sensor in the license plate, and the sensor is excited to send feedback signals; the feedback signal from the sensor is also received by the excitation antenna and transmitted to the signal transceiver via the connection line. For the single wheel, the exciting antenna is arranged at the position near the single wheel, the exciting antennas are arranged on the single wheel at the left side and the right side of the wheel shaft, and the single wheel is represented to be a tire at the left side and the right side of the wheel shaft; in this example, the excitation antenna is provided at the fender portion of the single wheel tire. In addition, only one excitation antenna is arranged between two adjacent single wheels in front and back, and the excitation antenna is arranged close to one single wheel, in the example, the excitation antenna is positioned at the mud guard part of the front single wheel, for example, if two rows of adjacent single wheels exist in the vehicle, the excitation antenna is arranged at the mud guard part of the front single wheel; in some other embodiments, an excitation antenna may be provided for each single wheel. For the complex wheel, the excitation antenna is arranged on one side of the complex wheel, which is close to the vehicle, and the excitation antennas are correspondingly arranged on the complex wheels on the left side and the right side of the wheel shaft, wherein the complex wheels represent two or more tires on the left side and the right side of the wheel shaft. The excitation antenna can be arranged corresponding to each row of complex wheels or arranged at a position between two rows of complex wheels; if the exciting antenna is arranged between the two rows of complex wheels, the distances between the two rows of complex wheels are equal. In this example, if there are three or more continuous rows of complex wheels, the exciting antennas are arranged between the complex wheels, for example, three rows of complex wheels are used, and four exciting antennas are arranged on the left and right sides of the corresponding wheel axle; if only one row or two continuous rows of compound wheels exist, the exciting antenna is arranged corresponding to each row of compound wheels, and one exciting antenna is arranged at each of the left end and the right end of the wheel shaft.

The excitation antenna is also provided with numbers, in this example, the excitation antenna is provided with LF (1) to LF (n) numbers according to the left side to the right side, and the front side to the rear side of the vehicle; for example, if the front row is a single-wheel vehicle, the rear row is a multi-wheel vehicle, and each of the left and right sides of each row of tires is provided with one excitation antenna, the excitation antenna at the left front of the vehicle is set as LF (1), the excitation antenna at the right front of the vehicle is set as LF (2), the excitation antenna at the left rear of the vehicle is set as LF (3), and the excitation antenna at the right rear of the vehicle is set as LF (4).

The cloud server is connected with the application terminal and the signal transceiver through the wireless network respectively. The application terminals comprise vehicle-mounted application terminals and handheld application terminals, in this example, the handheld application terminals are mobile phone devices, and the connection with the cloud server is achieved through APP or WeChat applet of the mobile phone devices and the like by means of a wireless communication network.

The device also comprises a switch and a storage battery, wherein the positive plate of the signal transceiver is connected with the positive electrode of the storage battery through the switch; the negative plate is directly connected with the negative electrode of the storage battery or the grounding part of the vehicle body.

In the implementation process, the dumper generally comprises two rows of single wheels and two rows of compound wheels, wherein an excitation antenna is correspondingly arranged between the two rows of single wheels left and right, the excitation antenna is arranged close to the front row of single wheels, and the front row of single wheels are single wheels close to one side of a locomotive; the left side and the right side of each row of compound wheels in the two rows of compound wheels are respectively provided with an excitation antenna, and the two rows of compound wheels are respectively provided with four excitation antennas. For a tractor, the tractor generally comprises a row of single wheels and two rows of compound wheels, wherein the left side and the right side of the single wheel of the row are respectively provided with an excitation antenna; the left side and the right side of each row of compound wheels in the two rows of compound wheels are respectively provided with an excitation antenna, and the two rows of compound wheels are respectively provided with four excitation antennas. For a trailer, the trailer comprises a plurality of rows of compound wheels, typically three rows of compound wheels, wherein two excitation antennas are arranged between two adjacent rows of compound wheels, and two antenna heads are respectively arranged corresponding to the compound wheels on the left side and the right side.

The exciting antenna is arranged and connected with the signal transceiver through a connecting wire, the signal transceiver controls the exciting antenna part to emit an exciting signal to excite the sensor in the tire, the feedback signal of the sensor is received by the exciting antenna and transmitted back to the signal transceiver, and the sensor number is judged according to the feedback signal, so that the wheel position judgment of the sensor is realized; the data received by the signal transceiver is uploaded to the cloud server, the cloud server further processes the data, the processing result is sent to the application terminal, and the application terminal feeds back the processing result to a vehicle driver.

As shown in fig. 5, a positioning method of a vehicle tire sensor includes the steps of:

step 2: performing antenna mapping initialization operation;

step 3: the signal transceiver judges whether a starting condition is met, wherein the starting condition is whether the speed per hour of the vehicle reaches a set value X; if the starting condition is met, entering the next step; otherwise, returning to the step 3;

Step 5: the signal transceiver acquires first excitation data;

As shown in fig. 6, the antenna mapping initializing step in the step 2 includes:

step 21: acquiring a setting part of an excitation antenna;

step 22: the number of excited antennas is obtained, and the step is ended.

In step 21, the set location of the excitation antenna in this example is acquired by the vehicle type, since the set location of the excitation antenna is determined according to the same vehicle type; in this example, the vehicle types include tractors, semitrailers and dump trucks, wherein the location of the excitation antenna is shown. In some other embodiments, the setting portion of the excitation antenna may be directly set, and the setting portion of the excitation antenna may be obtained by obtaining the setting data.

In the step 3, a starting condition is set, and the starting condition is related to the speed per hour of the vehicle, so that the excitation antenna can be excited to the sensor, and the influence caused by different installation positions of the sensor in the tire when the vehicle is stationary is avoided. Because the mounting position of the exciting antenna is fixed, and the mounting position of the sensor in the tire is not fixed, especially for a composite wheel, the sensor of the inner wheel and the sensor mounting position of the outer wheel may deflect by a large angle about the axle center of the wheel, so that the situation that the sensor of the outer wheel is closer to the exciting antenna instead, and inaccurate detection is caused. Therefore, wheels are required to rotate, the minimum vehicle speed is ensured, the influence of the position of a sensor in a tire is eliminated, and the accurate detection result is ensured. The set value X is 5km/h in this example.

In the step 4, each excitation antenna is started in turn, in this example, each antenna excitation head is started in turn from LF (1) to LF (n), where after the last antenna excitation head receives excitation feedback from the sensor and is closed, the next excitation antenna is started. In this example, the number of the excitation antennas is set in the order from the left side to the right side, and from the front side to the rear side of the vehicle. The strongest excitation intensity is set, and the excitation antenna can excite all sensors of the corresponding wheel positions under the excitation intensity, and the sensors on other wheel shafts are not affected.

The first excitation data in the step 5 comprises an excitation antenna number for sending out an excitation signal and a feedback signal of a sensor corresponding to the excitation antenna, wherein the feedback signal of the sensor comprises the number of the sensor. It should be noted that the sensor may also send vehicle information data collected by the sensor according to the set frequency, including tire temperature, tire pressure, etc., where the vehicle information data may also be received by the excitation antenna, and the collected vehicle information data may complete the correspondence between the vehicle information data and the wheel positions according to the relationship between the sensor and the wheel positions in the wheel position table.

As shown in fig. 7, the process of obtaining the initial wheel position table in the step 6 includes:

Step 67: and obtaining an initial wheel position table, and ending the step.

In the step 66, when the non-repeated original sensor number data are sequentially filled into the empty wheel positions in the initial wheel position table, the original sensor number data are firstly ordered according to the order of vehicles from left to right and from front to back, and the empty wheel positions are also ordered according to the order of vehicles from left to right and from front to back; and then correspondingly filling the ordered original sensor wheel bits into the ordered vacant wheel bits, and discarding the filled redundant original sensor number data.

As shown in fig. 8-11, the accurate wheel position positioning in the step 7 includes the following steps:

step 71: the signal transceiver judges whether the starting condition is met; the starting condition is whether the speed per hour of the vehicle reaches a set value Y; if the starting condition is met, starting a timer, and entering the next step; otherwise, the timer is stopped and the process returns to step 71; in this example, the set value Y is 5km/h;

step 76: judging whether the excitation antennas LF (1) -LF (n) are all used for completing wheel alignment; if not, determining the next activated excitation antenna LF (m+1), returning to step 71; if the rotation calibration process of all the excitation antennas is completed, step 77 is entered;

step 77: analyzing the wheel bit data and updating the wheel bit data table;

In step 71, before determining whether the starting condition is satisfied, a supplementary data timer initialization process is further required, that is, the supplementary data timer initialization process is required first every time the wheel position accurate positioning process is entered. And setting a timer through the initialization flow of the supplementary data timer, so that the data meeting the set duration can be uniformly tidied, and in the subsequent steps, the data is uniformly uploaded to the cloud server, and the data transmission efficiency is improved. The supplementary data timer initialization procedure includes the steps of:

Step 711: statically initializing the count of a timer;

step 712: judging whether the count of the timer is larger than a set value W or not; if the timer is greater than the set value W, go to step 713; otherwise, go to step 715; counting one time in one minute by a timer in the embodiment, and setting the value W to be 7;

step 713: the timer is larger than the set value W, the timer is stopped, and the count value is emptied;

step 714: setting a data supplementing flag bit to be 1;

step 715: and ending the initialization flow of the supplementary data timer.

In the step 711, the counting of the static initialization timer means that the counting of the timer is initialized only when the signal transceiver is powered on and enters the accurate wheel position positioning for the first time; when the timer is stopped or started later due to the judgment of the starting condition of the vehicle, or the accurate positioning process of the wheel position is restarted later, the counting of the timer is not changed.

In step 712, the relationship between the timer count and the set value W is determined to ensure that the sensor collects the vehicle information data with the set duration; and after the vehicle information data with the set duration is collected in step 714, the data supplement flag bit is set to 1, so that the part of the vehicle information data can be uploaded in the subsequent step. In this example, W is set to 7, because the timer counts once a minute, and the signal transceiver sorts the vehicle signals collected by the sensor once for 3 minutes; and finishing the vehicle information acquired by the sensors twice in a time interval of 7 minutes, and ensuring that each sensor acquires the vehicle information data as much as possible through a subsequent de-duplication step and recording the vehicle information data.

The step 72 is to determine the activated excitation antenna LF (m), in this case in the order of the excitation antenna numbers, i.e. starting from the excitation antenna LF (1) and ending with the excitation antenna LF (n); when the wheel position is accurately positioned for the first time, the started excitation antenna is LF (1).

The single wheel alignment process in step 74 includes the steps of:

In step 741, the excitation signals from the excitation antennas are sequentially increased from small to large, wherein during the single-wheel-position calibration process, the first excitation signal is a set minimum excitation signal, and the set minimum excitation signal is 0 in this example.

In step 743, because the excitation antenna LF (m) is set for a row of single wheels and the excitation signal is increased from the excitation antenna, there are no two or more excitation feedback signals. And when the excitation feedback signal is not detected, gradually increasing the excitation signal by the detection signal of the excitation antenna until the excitation feedback signal is received, corresponding the sensor to the single wheel position, stopping increasing the excitation signal, and ending the step. However, in some other embodiments, to ensure that the wheel alignment process is accurate, 2 or more excitation feedback signals received by the excitation antenna in step 743 may decrease the excitation signal strength from the excitation antenna to the excitation signal minimum and return to step 741.

Similarly, in step 747, there is no case where the excitation feedback signal is not received, because the excitation signal is gradually increased and the front wheel calibration has been completed, and thus at least the feedback signal of the front wheel sensor is received. In some other embodiments, however, to ensure that the wheel alignment process is accurate, if the excitation antenna does not receive an excitation feedback signal in step 747, the intensity of the excitation signal from the excitation antenna is increased and the process returns to step 741.

In step 748, the excitation signal strength of the excitation antenna may be sequentially increased according to a set excitation signal strength level or sequentially increased according to a set excitation signal strength difference.

The complex wheel alignment process in step 75 includes the steps of:

The excitation signals from the excitation antennas are sequentially increased from small to large in step 751, wherein the first excitation signal is the set excitation signal minimum value, in this case the set excitation signal minimum value is 0, during the complex wheel alignment process.

In step 753, the inner wheel calibration process includes the following steps:

In step 7532, the received excitation feedback signals are not two or more or 0; because if the excitation feedback signal is 0, then in step 752, step 755 is skipped and the next excitation cycle is entered after the excitation signal strength is increased; on the other hand, the excitation feedback signal is gradually and circularly enhanced from the minimum value of the excitation signal, and the distance between the sensor of the wheel position and the excitation antenna is inconsistent, so that the sensor of the inner wheel inevitably receives the excitation signal of the excitation antenna and performs excitation feedback, and the sensor corresponding to the received excitation feedback signal is used as the sensor of the inner wheel. In some other embodiments, to improve the accuracy of the process, when two or more excitation feedback signals are received at step 7532, the excitation signal strength of the excitation antenna is reset to the excitation signal minimum value, and step 751 is returned.

In step 7533, the excitation antennas are disposed corresponding to two rows of complex wheels, which means that the excitation antennas are disposed between the two rows of complex wheels, and at this time, one excitation antenna corresponds to four wheel positions. The excitation feedback signals received by the excitation antenna in the step are not more than two or 0; because if the excitation feedback signal is 0, then in step 752, step 755 is skipped and the next excitation cycle is entered after the excitation signal strength is increased; on the other hand, the excitation feedback signal is gradually and circularly enhanced from the minimum value of the excitation signal, and the distance between the wheel position sensor and the excitation antenna is inconsistent, so that the two inner wheel sensors inevitably receive the excitation signal of the excitation antenna and make excitation feedback, and the two inner wheel sensors are necessarily excited earlier than the two outer wheel sensors. In some other embodiments, to improve the accuracy of the process, when more than two excitation feedback signals are received in step 7533, the excitation signal strength of the excitation antenna is reset to the excitation signal minimum value, and step 751 is returned.

In step 754, the outer wheel calibration process includes the steps of:

In step 7543, because the inner wheel calibration process is completed before the outer wheel calibration process, and the excitation signal is gradually enhanced, the excitation feedback signal in this step must be two or more; in some other embodiments, to ensure accuracy of detection, in step 7543, if one or 0 excitation feedback signals are detected, the excitation signal strength is increased, and the process returns to step 751.

In step 755, the excitation signal strength of the excitation antenna may be sequentially increased according to a set excitation signal strength level, or sequentially increased according to a set excitation signal strength difference.

In the step 77, the process of analyzing the wheel bit data includes the following steps:

step 773: the excitation antenna LF (m') is positioned at the front side of the excitation antenna LF (m), the public data part in the excitation antenna LF (m) is the front row complex wheel data of the two rows of complex wheels corresponding to the public data part, the non-public data part in the excitation antenna LF (m) is the rear row complex wheel data of the two rows of complex wheels corresponding to the non-public data part, and corresponding wheel positions in the wheel position table are updated according to the inner wheel calibration processing result and the outer wheel calibration processing result in the step 75, and the step 776 is entered;

Step 774: the excitation antenna LF (m') is positioned at the rear side of the excitation antenna LF (m), the public data part in the excitation antenna LF (m) is the rear row complex wheel data of the corresponding two rows of complex wheels, the non-public data part in the excitation antenna LF (m) is the front row complex wheel data of the corresponding two rows of complex wheels, and the corresponding wheel positions in the wheel position table are updated according to the inner wheel calibration processing result and the outer wheel calibration processing result in the step 75, and the step 776 is entered;

step 776: judging whether analysis is completed for each excitation antenna; if all the analysis is completed, go to step 777; otherwise, determining the next resolved excitation antenna, in this example excitation antenna LF (m+1), and returning to step 771;

In step 771, the resolved excitation antenna LF (m) is determined, in this example, in the order of the excitation antenna numbers, i.e. from the beginning of the excitation antenna LF (1) to the end of the excitation antenna LF (n); when the rotation data analysis is performed for the first time, the analyzed excitation antenna is LF (1).

As shown in fig. 12, the step 8 of performing the supplementary data processing on the vehicle includes the following steps:

step 81: judging whether the data supplementing flag bit is 1; if the data supplementing flag bit is 1, the duration corresponding to the vehicle information data acquired by the sensor is considered to be in accordance with the requirement, and the step 82 is entered; if the data supplementing flag bit is not 1, ending the step;

step 82: performing deduplication operation on data acquired by the sensor; the duplicate removal operation is to integrate the vehicle information data collected by the same sensor, reserve the latest vehicle information data and discard other vehicle information data;

step 83: and uploading the de-duplicated data to a cloud server by combining with the round table, and ending the steps.

As shown in fig. 13, the step of filling the data by the cloud end server in the step 9 includes:

step 91: the cloud server receives vehicle information data;

step 92: according to the latest wheel position table, the correspondence of the vehicle information data is completed;

step 93: judging whether the original wheel position data exists in the wheel position table or not; if the original wheel position data does not exist, the sensor wheel position data in the wheel position table are all excitation data, and the step is ended; if the original wheel position data exists, the step 93 is entered;

Step 93: screening vehicle information data collected by a corresponding sensor in the original wheel position data;

step 94: acquiring the priority of the screened vehicle information data;

step 95: and according to the priority of the vehicle information data, the vehicle information data and the original wheel position data are corresponding until all the original wheel position data are completely corresponding, and the step is ended.

In the step 94, the priority of the vehicle information data is first determined whether there is acceleration information in the vehicle information data, and if there is acceleration information, the acceleration information is set to a first priority; and secondly, ordering the vehicle information data from high to low according to the receiving frequency of the vehicle information data, and setting the vehicle information data as a second priority. Wherein the frequency of reception of the vehicle information data represents the frequency at which the signal transceiver receives the vehicle information data collected by the corresponding sensor.

In the step 95, one wheel position data in the wheel position table includes at least one set sensor, and in the process of completing correspondence between the vehicle information data and the original wheel position data, the wheel position including the acceleration sensor in the original wheel position data is filled with the acceleration information of the first priority first according to the wheel position sequence from left to right and from front to back of the vehicle; and sequentially filling other vehicle information data into the sensors corresponding to the original wheel position data.

In this example, the complex wheel is two side-by-side tires, and in some other embodiments, three or more complex wheels exist, or the excitation signal is gradually enhanced, so as to obtain the excitation feedback signal of the sensor, and complete the wheel position judgment of the sensor.

It should be noted that the cloud server also tracks the braking condition of the vehicle and the temperature of the sensor for a long time, and corrects the tire position of the sensor, wherein the temperature of the inner tire sensor is higher than the temperature of the outer tire sensor in the inner tire and the outer tire with the same axle position; the braking condition is used for comparing with information data acquired by an acceleration sensor in the tire. The braking condition is acquired through vehicle information data acquired by a sensor of the vehicle or other external vehicle-mounted equipment, and the temperature of the sensor is acquired through the vehicle information data acquired by the sensor.

In the implementation process, exciting the sensor through an exciting antenna, obtaining the number of the sensor according to an exciting feedback signal, and obtaining the wheel position of the sensor through judging the position of the exciting antenna; gradually increasing an excitation signal of an excitation body antenna through wheel position calibration processing, and judging whether the wheel position of a sensor is an inner wheel or an outer wheel according to feedback of the sensor; for continuous three rows and more of complex wheels, the exciting antennas are arranged between two rows of complex wheels, the common area is judged through wheel position data analysis, and the wheel position of the sensor is accurately judged by the least exciting antennas by combining the judgment of the inner and outer wheels.

The above description is only one specific example of the present invention and does not constitute any limitation on the present invention. It will be apparent to those skilled in the art that various modifications and changes in form and details may be made without departing from the principles and construction of the invention, but these modifications and changes based on the inventive concept are still within the scope of the appended claims.

Claims

1. The identification structure of the vehicle tyre sensor is characterized by comprising an excitation antenna, a connecting wire, a signal transceiver, a cloud server and an application terminal; wherein the excitation antenna is arranged at a position close to the tyre of the vehicle; the connecting wire is arranged between the exciting antenna and the signal transceiver; the signal transceiver is also connected with a cloud server, and the cloud server is also connected with the application terminal; the exciting antenna is used for transmitting and receiving signals and is arranged corresponding to the single wheel or the complex wheel; for the single wheels, the excitation antenna is arranged close to one single wheel, or is arranged between two single wheels on the same side, or is arranged between two single wheels adjacent to each other in front and back, or is arranged for each single wheel; for the complex wheel, the excitation antenna is arranged corresponding to each row of complex wheels or is arranged at a position between two rows of complex wheels; the exciting antenna is provided with a number;

The method for positioning the vehicle tyre sensor by the identification structure comprises the following steps:

step 2: performing antenna mapping initialization operation;

step 5: the signal transceiver acquires first excitation data;

step 9: the cloud server receives the vehicle information data and completes data filling according to the latest wheel position data table; feeding back the data filling result to the application terminal, and ending the step;

the process of acquiring the initial wheel position table in the step 6 includes:

step 67: and obtaining an initial wheel position table, and ending the step.

2. A method for positioning a vehicle tyre sensor based on the identification structure of claim 1, characterized in that the wheel position in step 7 is precisely positioned, comprising the steps of:

Step 77: analyzing the wheel bit data and updating the wheel bit data table;

3. A method of positioning a vehicle tyre sensor as claimed in claim 2 wherein said single wheel alignment process of step 74 comprises the steps of:

step 747: the rear wheel does not complete calibration, and whether the excitation antenna LF (m) receives the excitation feedback quantity of the sensor is judged; if the received sensor excitation feedback signal is one, then step 748 is entered; if two sensor excitation feedback signals are received, acquiring a rear wheel sensor with a sensor different from a front wheel sensor in the two sensors as a setting part of an excitation antenna LF (m), setting a rear wheel calibration marker bit as complete, and entering step 7410;

4. A method of positioning a vehicle tyre sensor according to claim 2 wherein said complex wheel alignment process of step 75 comprises the steps of:

5. The method for positioning a tire sensor for a vehicle according to claim 4, wherein the inner wheel calibration process in step 753 comprises the steps of:

Step 7532: the exciting antenna is arranged corresponding to a row of complex wheels, a sensor corresponding to one received exciting feedback signal is marked as an inner wheel sensor, an inner wheel calibration mark position is set to be finished, and the steps are finished;

6. A method of positioning a vehicle tire sensor as in claim 4, wherein said outer wheel calibration process in step 754 comprises the steps of:

7. The method for positioning a tire sensor for a vehicle according to claim 4, wherein in said step 77, the process of analyzing the wheel position data comprises the steps of: