CN111845218A - Automatic positioning system for positions of tires of whole vehicle based on double tires on one side of vehicle axle - Google Patents
Automatic positioning system for positions of tires of whole vehicle based on double tires on one side of vehicle axle Download PDFInfo
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- CN111845218A CN111845218A CN202010544613.7A CN202010544613A CN111845218A CN 111845218 A CN111845218 A CN 111845218A CN 202010544613 A CN202010544613 A CN 202010544613A CN 111845218 A CN111845218 A CN 111845218A
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- tire pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/005—Devices specially adapted for special wheel arrangements
- B60C23/007—Devices specially adapted for special wheel arrangements having multiple wheels arranged side by side
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0415—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0415—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
- B60C23/0416—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0418—Sharing hardware components like housing, antenna, receiver or signal transmission line with other vehicle systems like keyless entry or brake control units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
- B60C23/0437—Means for detecting electromagnetic field changes not being part of the signal transmission per se, e.g. strength, direction, propagation or masking
Abstract
The invention discloses an automatic positioning system for positions of tires of a whole vehicle based on double tires on one side of an axle, wherein a main receiver is arranged on one side of a front axle of the vehicle, a slave receiver is arranged on one side of a rear axle of the vehicle, low-frequency antennas are respectively arranged on the inner tires of the double tires on one side of the axle, and a tire pressure monitoring sensor is respectively arranged in each tire; the tire pressure monitoring sensor of the inner tire is awakened by the low-frequency antenna to acquire monitoring data of the inner tire, the position location of the inner tire is determined, meanwhile, the position location of the outer tire is determined by the monitoring data of the outer tire, the automatic location of the position of the whole vehicle tire of which one side is double tires is achieved, the operation time of tire location is saved, and the work efficiency is improved.
Description
Technical Field
The invention relates to the field of automobile tire positioning, in particular to an automatic positioning system for the position of a whole automobile tire based on double tires on one side of an axle.
Background
At present, the automatic positioning of tires of a tire pressure monitoring sensor is only limited to the condition that one side of a private car axle is in a single-tire state, the position of the tires of the whole car is not positioned by an effective method for temporarily positioning double tires on one side of a heavy truck, and only one tire and one tire of a tire pressure monitoring handle can be used for positioning. Because the number of the tires of the whole truck is generally not less than 10, and even dozens of tires are provided, a lot of time is consumed for positioning one tire and one tire by utilizing the tire pressure monitoring handle, and the efficiency is low. The method for automatically positioning the tire position of the whole vehicle by the heavy truck tire pressure monitoring sensor is provided for solving the problem that the tire position of the whole vehicle is automatically positioned by the heavy truck tire pressure monitoring sensor, and a large amount of manpower and material resources are saved.
Therefore, an automatic positioning strategy for the position of the whole vehicle tire based on double tires on one side of the axle is urgently needed in the market at present, so that the automatic positioning of the position of the whole vehicle tire with double tires on one side of the axle is realized, the operation time for positioning the tire is saved, and the working efficiency is improved.
Disclosure of Invention
The invention provides an automatic positioning system for the positions of tires of a whole vehicle, which is based on double tires on one side of an axle, and the automatic positioning system can be used for automatically positioning the positions of the tires of the whole vehicle, on one side of the axle, of the double tires, so that the tire positioning operation time is saved, and the work efficiency is improved.
In order to solve the above technical problem, an embodiment of the present invention provides an automatic positioning system for a tire position of a whole vehicle based on a double tire on one side of an axle, including: the method comprises the following steps that a main receiver is arranged on one side of a front axle of a vehicle, a slave receiver is arranged on one side of a rear axle of the vehicle, a low-frequency antenna is arranged at each tire on the inner side of a double tire on one side of an axle, and a tire pressure monitoring sensor is arranged in each tire;
when the vehicle runs in the first speed, the main receiver or the slave receiver wakes up each low-frequency antenna in the corresponding tire pressure monitoring sensor in the inner side tire by driving the low-frequency antenna so as to acquire monitoring data of each inner side tire through the tire pressure monitoring sensor in each inner side tire, thereby determining the position location of each inner side tire;
When the vehicle runs in the second speed, the tire pressure monitoring sensors in all the tires in the vehicle are awakened through the gravity acceleration, on one hand, the position location of the tires on the outer side of the front axle is determined through the monitoring data received by the main receiver and sent by the tire pressure monitoring sensors in the tires on the outer side of the front axle, and on the other hand, the position location of the tires on the outer side of the rear axle is determined through the monitoring data received by the receiver and sent by the tire pressure monitoring sensors in the tires on the outer side of the rear axle.
Preferably, when the vehicle runs at the first speed, the main receiver or the slave receiver wakes up the tire pressure monitoring sensor of each low-frequency antenna in the corresponding inner tire by driving the low-frequency antenna, so as to acquire the monitoring data of each inner tire through the tire pressure monitoring sensor in each inner tire, thereby determining the position location of the inner tire, specifically comprising:
when the vehicle runs in the first speed, the main receiver receives a first automatic positioning signal and sends a low-frequency antenna positioning starting instruction to the slave receiver in response to the first automatic positioning signal, so that the slave receiver drives the low-frequency antenna arranged on the rear axle to wake up a tire pressure monitoring sensor in a tire on the inner side of the rear axle, acquires monitoring data of the tire on the inner side of the rear axle and determines the position positioning of the tire on the inner side of the rear axle.
Preferably, after the primary receiver receives the first automatic positioning signal, when a dual-tire structure exists on an axle side of the front axle, the method further includes:
and after receiving the first automatic positioning signal, the main receiver drives a low-frequency antenna arranged on the front axle to awaken a tire pressure monitoring sensor in the inner side tire of the front axle, acquires monitoring data of the inner side tire of the front axle and determines the position positioning of the inner side tire of the front axle.
Preferably, when the vehicle runs at the second speed, waking up the tire pressure monitoring sensors in all tires in the vehicle through the acceleration of gravity, and determining the position location of the tire on the outer side of the front axle through the monitoring data received by the main receiver and sent by the tire pressure monitoring sensor in the tire on the outer side of the front axle on the one hand, and determining the position location of the tire on the outer side of the rear axle through the monitoring data received by the slave receiver and sent by the tire pressure monitoring sensor in the tire on the outer side of the rear axle on the other hand specifically includes:
when the vehicle runs at the second speed, the tire pressure monitoring sensors in all the tires are awakened due to the gravity acceleration, the main receiver acquires monitoring data sent by the tire pressure monitoring sensors in all the tires of the front axle, filters the monitoring data of the positioned tires on the inner side of the front axle to obtain the monitoring data of the tires on the outer side of the front axle, and determines the position positioning of the tires on the outer side of the front axle according to the monitoring data of the tires on the outer side of the front axle;
Meanwhile, the monitoring data sent by the tire pressure monitoring sensors in all tires of the rear axle are obtained from the receiver, the monitoring data of the positioned tires on the inner side of the rear axle are filtered, the monitoring data of the tires on the outer side of the rear axle are obtained, and the position of the tires on the outer side of the rear axle is determined according to the monitoring data of the tires on the outer side of the rear axle.
Preferably, the monitoring data sent by the tire pressure monitoring sensor in the inner tire includes: the tire pressure monitoring sensor ID, the received low-frequency signal field intensity awakened by the low-frequency antenna, the tire pressure of the tire and the tire temperature of the tire.
Preferably, the step of determining the position and location of the inner tire specifically includes:
comparing the field intensity of the low-frequency signal with a preset field intensity value, and associating the position of the inner tire with the ID of the tire pressure monitoring sensor when the field intensity of the low-frequency signal is determined to be a radio-frequency signal sent by the tire pressure sensor in the inner tire corresponding to the low-frequency antenna; otherwise, repeatedly waking up and re-receiving the monitoring data of the inner tire.
Preferably, the step of repeatedly waking up and re-receiving the monitoring data of the inner tire specifically includes: and when the number of times of repeated awakening reaches ten times and the field intensity of the low-frequency signal cannot be determined to be the radio-frequency signal sent by the tire pressure sensor in the inner tire corresponding to the distance from the low-frequency antenna, stopping driving the low-frequency antenna and sending the positioning failure information of the low-frequency antenna to a vehicle instrument to prompt a user of failure in identification.
Preferably, the monitoring data sent by the tire pressure monitoring sensor in the outer tire includes: the tire pressure monitoring sensor ID, the magnitude and direction of the gravitational acceleration, the tire pressure of the tire, and the tire temperature of the tire.
Preferably, the method of determining the position location of the tire on the outer side of the front axle or the position location of the tire on the outer side of the rear axle includes:
the method comprises the steps of determining the positions of axles where outer tires are located according to the signal field intensity of monitoring data of the outer tires, and determining the positions of tire pressure sensors in two outer tires in the same axle according to the gravity acceleration direction in the monitoring data sent by the tire pressure sensors in different outer tires in the same axle.
Preferably, the main receiver is arranged on one side of a front axle of the vehicle close to a rear axle; the slave receiver is disposed on a rear axle side of the vehicle near the front axle.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the technical scheme of the invention is that a main receiver is arranged on one side of a front axle of a vehicle, a slave receiver is arranged on one side of a rear axle of the vehicle, a low-frequency antenna is respectively arranged at the inner side tires of double tires on one side of an axle, a tire pressure monitoring sensor is respectively arranged in each tire, the low-frequency antenna is used for awakening the tire pressure monitoring sensor of the inner side tire to obtain the monitoring data of the inner side tire, the position location of the inner side tire is determined, and meanwhile, the position location of the outer side tire is determined by using the monitoring data of the outer side tire; the automatic positioning of the positions of the tires of the whole vehicle with double tires on one side of the axle is realized, the operation time for positioning the tires is saved, and the working efficiency is improved.
Drawings
FIG. 1: the invention relates to a structure diagram of an automatic positioning system for the positions of tires of a whole vehicle based on double tires on one side of an axle in the embodiment of the invention;
FIG. 2: a flow chart of the method for identifying the tire pressure sensor in the inner tire by using the low-frequency antenna from the receiver in the embodiment of the invention;
FIG. 3: a flow chart of the tire pressure sensor in the outer tire is identified by a master receiver and a slave receiver in the embodiment of the invention;
FIG. 4: the invention provides an overall principle flow chart of an automatic positioning system for the positions of tires of a whole vehicle based on double tires on one side of an axle in an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The preferred embodiment of the present invention provides an automatic positioning system for the position of a tire of a whole vehicle based on double tires on one side of an axle, comprising: the method comprises the following steps that a main receiver is arranged on one side of a front axle of a vehicle, a slave receiver is arranged on one side of a rear axle of the vehicle, a low-frequency antenna is arranged at each tire on the inner side of a double tire on one side of an axle, and a tire pressure monitoring sensor is arranged in each tire;
When the vehicle runs in the first speed, the main receiver or the slave receiver wakes up each low-frequency antenna in the corresponding tire pressure monitoring sensor in the inner side tire by driving the low-frequency antenna so as to acquire monitoring data of each inner side tire through the tire pressure monitoring sensor in each inner side tire, thereby determining the position location of each inner side tire;
when the vehicle runs in the second speed, the tire pressure monitoring sensors in all the tires in the vehicle are awakened through the gravity acceleration, on one hand, the position location of the tires on the outer side of the front axle is determined through the monitoring data received by the main receiver and sent by the tire pressure monitoring sensors in the tires on the outer side of the front axle, and on the other hand, the position location of the tires on the outer side of the rear axle is determined through the monitoring data received by the receiver and sent by the tire pressure monitoring sensors in the tires on the outer side of the rear axle.
In this embodiment, when the vehicle is running at the first speed, the main receiver or the slave receiver wakes up the tire pressure monitoring sensor in the corresponding inner tire by driving the low frequency antenna, so as to obtain the monitoring data of each inner tire through the tire pressure monitoring sensor in each inner tire, thereby determining the position location of the inner tire, specifically including:
When the vehicle runs in the first speed, the main receiver receives a first automatic positioning signal and sends a low-frequency antenna positioning starting instruction to the slave receiver in response to the first automatic positioning signal, so that the slave receiver drives the low-frequency antenna arranged on the rear axle to wake up a tire pressure monitoring sensor in a tire on the inner side of the rear axle, acquires monitoring data of the tire on the inner side of the rear axle and determines the position positioning of the tire on the inner side of the rear axle.
In another embodiment, after the primary receiver receives the first automatic positioning signal, when a dual-tire structure is present on an axle side of the front axle, the method further comprises:
and after receiving the first automatic positioning signal, the main receiver drives a low-frequency antenna arranged on the front axle to awaken a tire pressure monitoring sensor in the inner side tire of the front axle, acquires monitoring data of the inner side tire of the front axle and determines the position positioning of the inner side tire of the front axle.
In this embodiment, when the vehicle is running at the second speed, waking up the tire pressure monitoring sensors in all tires in the vehicle through the acceleration of gravity, and determining the position location of the tire outside the front axle according to the monitoring data received by the main receiver and sent by the tire pressure monitoring sensor in the tire outside the front axle on the one hand, and determining the position location of the tire outside the rear axle according to the monitoring data received by the slave receiver and sent by the tire pressure monitoring sensor in the tire outside the rear axle on the other hand specifically includes:
When the vehicle runs at the second speed, the tire pressure monitoring sensors in all the tires are awakened due to the gravity acceleration, the main receiver acquires monitoring data sent by the tire pressure monitoring sensors in all the tires of the front axle, filters the monitoring data of the positioned tires on the inner side of the front axle to obtain the monitoring data of the tires on the outer side of the front axle, and determines the position positioning of the tires on the outer side of the front axle according to the monitoring data of the tires on the outer side of the front axle;
meanwhile, the monitoring data sent by the tire pressure monitoring sensors in all tires of the rear axle are obtained from the receiver, the monitoring data of the positioned tires on the inner side of the rear axle are filtered, the monitoring data of the tires on the outer side of the rear axle are obtained, and the position of the tires on the outer side of the rear axle is determined according to the monitoring data of the tires on the outer side of the rear axle.
Further, in this embodiment, the monitoring data transmitted by the tire pressure monitoring sensor in the inner tire includes: the tire pressure monitoring sensor ID, the received low-frequency signal field intensity awakened by the low-frequency antenna, the tire pressure of the tire and the tire temperature of the tire. In this embodiment, the step of determining the position location of the inner tire specifically includes: comparing the field intensity of the low-frequency signal with a preset field intensity value, and associating the position of the inner tire with the ID of the tire pressure monitoring sensor when the field intensity of the low-frequency signal is determined to be a radio-frequency signal sent by the tire pressure sensor in the inner tire corresponding to the low-frequency antenna; otherwise, repeatedly waking up and re-receiving the monitoring data of the inner tire.
Specifically, in this embodiment, in the step of repeatedly waking up and re-receiving the monitoring data of the inner tire, specifically: and when the number of times of repeated awakening reaches ten times and the field intensity of the low-frequency signal cannot be determined to be the radio-frequency signal sent by the tire pressure sensor in the inner tire corresponding to the distance from the low-frequency antenna, stopping driving the low-frequency antenna and sending the positioning failure information of the low-frequency antenna to a vehicle instrument to prompt a user of failure in identification.
Further, the monitoring data transmitted by the tire pressure monitoring sensor in the outer tire includes: the tire pressure monitoring sensor ID, the magnitude and direction of the gravitational acceleration, the tire pressure of the tire, and the tire temperature of the tire. In this embodiment, the method of determining the position location of the tire on the outer side of the front axle or the position location of the tire on the outer side of the rear axle includes: the method comprises the steps of determining the positions of axles where outer tires are located according to the signal field intensity of monitoring data of the outer tires, and determining the positions of tire pressure sensors in two outer tires in the same axle according to the gravity acceleration direction in the monitoring data sent by the tire pressure sensors in different outer tires in the same axle.
In another embodiment, the primary receiver is disposed on a front axle side of the vehicle adjacent the rear axle; the slave receiver is disposed on a rear axle side of the vehicle near the front axle.
The technical scheme of the invention is that a main receiver is arranged on one side of a front axle of a vehicle, a slave receiver is arranged on one side of a rear axle of the vehicle, a low-frequency antenna is respectively arranged at the inner side tires of double tires on one side of an axle, a tire pressure monitoring sensor is respectively arranged in each tire, the low-frequency antenna is used for awakening the tire pressure monitoring sensor of the inner side tire to obtain the monitoring data of the inner side tire, the position location of the inner side tire is determined, and meanwhile, the position location of the outer side tire is determined by using the monitoring data of the outer side tire; the automatic positioning of the positions of the tires of the whole vehicle with double tires on one side of the axle is realized, the operation time for positioning the tires is saved, and the working efficiency is improved.
In order to make the technical scheme of the invention easier to understand, the technical scheme of the invention provides a more common axle driving form 6x4 of a heavy truck as an example for introduction, and the specific technical scheme is as follows:
referring to fig. 1, the automatic positioning system for positions of tires of a whole vehicle based on double tires on one side of an axle according to the present embodiment is composed of a tire pressure monitoring master receiver, a tire pressure monitoring slave receiver, a low frequency antenna LF, a tire pressure monitoring sensor, and the like, wherein the tire pressure monitoring master receiver and the tire pressure monitoring slave receiver communicate with each other through an LIN bus.
Firstly, a tire pressure monitoring main receiver, a secondary receiver, low-frequency antennas (LF1, LF2, LF3 and LF4, the numbering sequence is from left to right, and from front to back, the direction of the vehicle head is taken as the standard) are arranged, all CAN buses, LIN buses and hard wires driven by the low-frequency antennas are connected, tire pressure sensors in all tires are mounted, the tires are numbered 0000 to 1001, the numbering sequence is also from left to right, and the direction of the vehicle head is taken as the standard from front to back. The low frequency antenna and the slave receiver must be connected strictly according to the interface definition, for example, the low frequency antenna LF1 corresponds to the pin of the slave receiver LF 1. The master receiver is placed as close as possible to the two tires of the first bridge and the slave receiver is placed as close as possible to the two tires of the second bridge, as shown in fig. 1.
The low-frequency antennas are respectively arranged close to inner-side tires (the tire with double tires on one side of an axle, such as the tires with numbers of 0011, 0100, 0111 and 1000), the installation positions and the transmitting power of the low-frequency antennas are calibrated, so that when the low-frequency antennas are driven by a receiver, only tire pressure sensors in the tires closest to the receiver are awakened, and information such as the ID of the receiver, the field intensity of received low-frequency signals, the tire pressure of the tires, the tire temperature of the tires and the like is sent by high-frequency signals. For example, when the slave receiver drives the low frequency antenna LF1 with a calibrated power, the low frequency antenna LF1 sends a low frequency signal at a frequency of 125KHz to wake up the tire pressure sensor in the tire with the number of 0011, and after the sensor is woken up, the sensor sends information of the ID of the three frames itself, the field strength of the received low frequency signal, the tire pressure of the tire, the tire temperature of the tire, and the like to the slave receiver at 433.92MHz, as shown in fig. 1.
After the low-frequency antenna installation position and the transmitting power calibration are completed, firstly, a vehicle electric lock switch is rotated to an ON gear, a vehicle axle driving mode of a 6x4 vehicle type is arranged in an instrument, and an option for automatically positioning the whole vehicle tire position of a tire pressure sensor is selected. And then starting the vehicle, keeping the vehicle running forwards slowly at a speed less than 5KM/h, and at the moment, after receiving the signals of the position of the whole vehicle tire of the automatic positioning tire pressure sensor and the vehicle speed, which are sent by the instrument through the CAN bus, the master receiver sends the signals to the slave receiver through the LIN bus, and the slave receiver starts a low-frequency antenna positioning instruction. And after receiving a low-frequency antenna positioning command of starting the host receiver from the receiver, sequentially driving the low-frequency antenna LF1 → LF2 → LF3 → LF4 according to the calibrated driving power. When the low-frequency antenna LF1 is driven, the low-frequency antenna LF1 sends a low-frequency signal at 125KHz to wake up the tire pressure sensor in the tire with the number of 0011, and after the sensor is woken up, the sensor sends information such as the ID of the three frames, the field strength of the received low-frequency signal, the tire pressure of the tire, the tire temperature of the tire and the like to the slave receiver at 433.92 MHz. After receiving the high-frequency signal from the receiver, the low-frequency signal field intensity fed back by the tire pressure sensor is compared with the set value in the receiver, and whether the high-frequency signal is a radio-frequency signal sent by the tire pressure sensor in the tire closest to the low-frequency antenna LF1 is judged. If so, associating the tire location (0011) with the ID of the sensor from the receiver; if not, discarding the signal, waking up again and receiving again, if failing after repeating for 10 times, stopping driving the low-frequency antenna and sending the positioning failure information of the low-frequency antenna to the instrument to prompt the user that the identification fails. When the tire pressure sensor in the tire 0011 is successfully identified, from the receiving immediately following the driving of the low frequency antenna LF2, LF2 wakes up the tire pressure sensor in the closest tire (0100) in the same way, and the sensor in the 0100 tire sends information to the slave receiver in the same way. When the sensor identification in the tire 0100 is successful, the sensor in the tire 0111 and the sensor in the tire 1000 are sequentially identified in the same manner from the receiver. When the sensors in 0011, 0100, 0111 and 1000 are all identified successfully, the slave receiver sends the position information of the sensors, the tire temperature, the tire pressure and other information to the master receiver, the master receiver sends the information to the instrument through the CAN bus, the instrument displays the information according to the received information and the set axle driving mode, sends out a sound and long sound to prompt a user that the tire pressure sensors of the tires at the inner sides of the second axle and the third axle are identified successfully, and the vehicle speed is increased to 30KM/h, and the specific flow is shown in figure 2.
When a user raises the vehicle speed to 30km/h, all the tire pressure sensors are awakened, the main receiver identifies two tire pressure sensors (two sensors with the strongest high-frequency signal field intensity) in two tires of the first bridge according to the high-frequency field intensity sent by the tire pressure sensors, and distinguishes the left and right positions of the two tire pressure sensors of the first bridge according to the gravity acceleration direction contained in the high-frequency signals (containing information such as tire temperature, tire pressure, gravity acceleration magnitude and direction) sent by the tire pressure sensors, so that the specific positions of the tire pressure sensors in the two tires of the first bridge are identified. Because the tire pressure sensor positions in the four tires on the inner sides of the second bridge and the third bridge are identified by using the low-frequency antenna, namely, the positions of the tire pressure sensors in the four tires on the outer sides of the second bridge and the third bridge are only needed to be identified from the receiver. The slave receiver also identifies two tire pressure sensors (two with the strongest high-frequency signal field strength) in the two tires outside the second bridge and two tire pressure sensors (two with the second highest high-frequency signal field strength) in the two tires outside the third bridge according to the high-frequency field strength sent by the tire pressure sensors. The slave receiver distinguishes the left and right positions of the tire where the tire pressure sensor is located according to the gravity acceleration direction sent by the tire pressure sensor, and the specific flow is shown in fig. 3.
And after the slave receiver successfully identifies the tire pressure sensors in the tires at the outer sides of the second bridge and the third bridge, the slave receiver sends the position information and the tire temperature, the tire pressure and other information detected by the tire pressure sensors to the master receiver. The main receiver collects information sent by the two tire pressure sensors in the two tires of the first bridge and the received information sent by the secondary receiver according to self identification, the information is sent to the instrument, the instrument sends out two sounds after receiving the tire temperature and tire pressure information of each tire, and prompts a user that the position identification of the tire pressure sensors is successful, and the overall flow is shown in fig. 4.
It should be noted that, the invention first adopts the low frequency antenna to locate the tire position of the inner tire pressure sensor, and then uses the main receiver and the secondary receiver to receive the field strength of the high frequency signal sent by the tire pressure sensor and the gravity acceleration direction to locate the tire position of the outer tire pressure sensor. The method is also suitable for other axle driving modes, for example, the front axle comprises two axles, and both axles are of a double-tire structure on one side, and only a low-frequency antenna is required to be arranged on the tire on the inner side of the front axle for positioning, which is the same as the positioning method of the double-rear axle inner tire pressure sensor. The main receiver is arranged in the front of the first axle and used for positioning the tire positions of the tire pressure sensors on the outer sides of the two front axles according to the field intensity and the gravity acceleration direction of the high-frequency signals sent by the tire pressure sensors. Generally, one receiver is responsible for receiving tire pressure sensor information of two axles, if a front axle exceeds two axles, two or more receivers need to be configured, and similarly, if a rear axle exceeds two axles, two or more receivers need to be configured. The arrangement positions of the receivers are the positions in front of one axle or two axles, and if a double-tire structure is arranged on one side of each axle, a low-frequency antenna needs to be configured for positioning.
The invention mainly aims to solve the problem that a heavy truck tire pressure monitoring sensor automatically positions the tire of a whole vehicle, and the technical scheme is that a slave receiver drives a low-frequency antenna to transmit a low-frequency signal to wake up the tire pressure monitoring sensor in the tire closest to the tire, and the tire pressure monitoring sensors in other tires are prevented from being woken up as much as possible, so that the installation position and the transmitting power of the low-frequency antenna are required to be calibrated when the slave receiver is firstly assembled, and the condition that the slave receiver only wakes up the tire pressure monitoring sensor in the tire closest to the slave receiver as much as possible is required. Of course, if the low-frequency antenna also wakes up the tire pressure sensors in other tires of the accessory under special conditions, the receiver can distinguish which sensor is closest to the low-frequency antenna (the sensor with the strongest low-frequency field intensity is the closest sensor) according to the received low-frequency field intensity contained in the high-frequency signal transmitted by the tire pressure sensor.
Therefore, the technical scheme of the invention has the advantages that:
1. the invention utilizes the low-frequency antenna to identify the tire pressure sensor in the inner tire, then uses the high-frequency signal field intensity and the gravity acceleration to identify the tire pressure sensor in the outer tire, finally achieves the purpose of automatically positioning the tire pressure sensor in the whole tire, can save more than 80% of the time required for manually positioning the position of the whole tire where the tire pressure sensor is located when the vehicle is off-line (generally, the manual positioning of the sensor in the whole tire needs more than 15 minutes, and the automatic positioning can be completed only by 3 minutes by depending on handheld equipment), and greatly lightens the labor intensity of workers (when the vehicle is off-line positioned, the whole tire positioning of the tire pressure sensor can be completed only by driving the vehicle, and one tire is not required to be manually positioned).
2. The invention also solves the problem of repositioning the tire pressure sensor in the whole tire after replacing the tire after sale, and after replacing the tire, the positioning of the tire pressure sensor in the whole tire can be completed by clicking and positioning the whole tire and driving for 1-2 minutes at 5km/h and 30km/h respectively without other equipment, thereby saving a large amount of manpower and material resources.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (10)
1. A vehicle tire position automatic positioning system based on double tires on one side of an axle is characterized in that a main receiver is arranged on one side of a front axle of a vehicle, a slave receiver is arranged on one side of a rear axle of the vehicle, low-frequency antennas are respectively arranged on the inner tires of the double tires on one side of the axle, and a tire pressure monitoring sensor is respectively arranged in each tire;
When the vehicle runs in the first speed, the main receiver or the slave receiver wakes up each low-frequency antenna in the corresponding tire pressure monitoring sensor in the inner side tire by driving the low-frequency antenna so as to acquire monitoring data of each inner side tire through the tire pressure monitoring sensor in each inner side tire, thereby determining the position location of each inner side tire;
when the vehicle runs in the second speed, the tire pressure monitoring sensors in all the tires in the vehicle are awakened through the gravity acceleration, on one hand, the position location of the tires on the outer side of the front axle is determined through the monitoring data received by the main receiver and sent by the tire pressure monitoring sensors in the tires on the outer side of the front axle, and on the other hand, the position location of the tires on the outer side of the rear axle is determined through the monitoring data received by the receiver and sent by the tire pressure monitoring sensors in the tires on the outer side of the rear axle.
2. The automatic positioning system for positions of tires of whole vehicle based on double tires on one side of axle according to claim 1, wherein when the vehicle is running in the first speed, the main receiver or the slave receiver wakes up each low frequency antenna in the corresponding tire pressure monitoring sensor in the inner tire by driving the low frequency antenna, so as to obtain the monitoring data of each inner tire through the tire pressure monitoring sensor in each inner tire, thereby determining the position and location of the inner tire, specifically comprising:
When the vehicle runs in the first speed, the main receiver receives a first automatic positioning signal and sends a low-frequency antenna positioning starting instruction to the slave receiver in response to the first automatic positioning signal, so that the slave receiver drives the low-frequency antenna arranged on the rear axle to wake up a tire pressure monitoring sensor in a tire on the inner side of the rear axle, acquires monitoring data of the tire on the inner side of the rear axle and determines the position positioning of the tire on the inner side of the rear axle.
3. The automatic vehicle tire position locating system based on dual tires on one side of the axle according to claim 2, wherein when dual tire structure exists on one side of the axle of the front axle after the first automatic locating signal is received by the main receiver, further comprising:
and after receiving the first automatic positioning signal, the main receiver drives a low-frequency antenna arranged on the front axle to awaken a tire pressure monitoring sensor in the inner side tire of the front axle, acquires monitoring data of the inner side tire of the front axle and determines the position positioning of the inner side tire of the front axle.
4. The automatic positioning system for vehicle tire position based on dual tires on one side of vehicle axle according to claim 1, wherein when the vehicle is running in the second speed, the system wakes up all the tire pressure monitoring sensors in the tires in the vehicle by the acceleration of gravity, on one hand, the position location of the tire on the outer side of the front axle is determined by the monitoring data received by the main receiver and sent by the tire pressure monitoring sensor in the tire on the outer side of the front axle, and on the other hand, the position location of the tire on the outer side of the rear axle is determined by the monitoring data received from the receiver and sent by the tire pressure monitoring sensor in the tire on the outer side of the rear axle, which specifically comprises:
When the vehicle runs at the second speed, the tire pressure monitoring sensors in all the tires are awakened due to the gravity acceleration, the main receiver acquires monitoring data sent by the tire pressure monitoring sensors in all the tires of the front axle, filters the monitoring data of the positioned tires on the inner side of the front axle to obtain the monitoring data of the tires on the outer side of the front axle, and determines the position positioning of the tires on the outer side of the front axle according to the monitoring data of the tires on the outer side of the front axle;
meanwhile, the monitoring data sent by the tire pressure monitoring sensors in all tires of the rear axle are obtained from the receiver, the monitoring data of the positioned tires on the inner side of the rear axle are filtered, the monitoring data of the tires on the outer side of the rear axle are obtained, and the position of the tires on the outer side of the rear axle is determined according to the monitoring data of the tires on the outer side of the rear axle.
5. The automatic positioning system for vehicle tire positions based on double tires on one side of the axle according to claim 1, wherein the monitoring data sent by the tire pressure monitoring sensor in the inner tire comprises: the tire pressure monitoring sensor ID, the received low-frequency signal field intensity awakened by the low-frequency antenna, the tire pressure of the tire and the tire temperature of the tire.
6. The automatic positioning system for positions of tires of a whole vehicle based on double tires on one side of an axle according to claim 5, wherein the step of determining the position location of the inner tire specifically comprises:
Comparing the field intensity of the low-frequency signal with a preset field intensity value, and associating the position of the inner tire with the ID of the tire pressure monitoring sensor when the field intensity of the low-frequency signal is determined to be a radio-frequency signal sent by the tire pressure sensor in the inner tire corresponding to the low-frequency antenna; otherwise, repeatedly waking up and re-receiving the monitoring data of the inner tire.
7. The automatic positioning system for vehicle tire positions based on dual tires on one side of the axle according to claim 6, wherein the step of repeatedly waking up and re-receiving the monitoring data of the inner tire comprises: and when the number of times of repeated awakening reaches ten times and the field intensity of the low-frequency signal cannot be determined to be the radio-frequency signal sent by the tire pressure sensor in the inner tire corresponding to the distance from the low-frequency antenna, stopping driving the low-frequency antenna and sending the positioning failure information of the low-frequency antenna to a vehicle instrument to prompt a user of failure in identification.
8. The automatic positioning system for vehicle tire positions based on double tires on one side of the axle according to claim 1, wherein the monitoring data sent by the tire pressure monitoring sensors in the outer tires comprises: the tire pressure monitoring sensor ID, the magnitude and direction of the gravitational acceleration, the tire pressure of the tire, and the tire temperature of the tire.
9. The automatic vehicle tire position locating system based on double tires on one side of the axle according to claim 8, wherein the method for determining the position location of the tire on the outer side of the front axle or the position location of the tire on the outer side of the rear axle comprises:
the method comprises the steps of determining the positions of axles where outer tires are located according to the signal field intensity of monitoring data of the outer tires, and determining the positions of tire pressure sensors in two outer tires in the same axle according to the gravity acceleration direction in the monitoring data sent by the tire pressure sensors in different outer tires in the same axle.
10. The automatic positioning system for the positions of tires of a whole vehicle based on double tires on one side of an axle according to claim 1, wherein the main receiver is arranged on one side of a front axle of the vehicle close to a rear axle; the slave receiver is disposed on a rear axle side of the vehicle near the front axle.
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