Bluetooth-based tire pressure management system controlled by remote communication terminal

Abstract

The invention provides a Bluetooth-based tire pressure management system controlled by a remote communication terminal. The Bluetooth-based tire pressure management system comprises a sensor, a controller and a receiver, the sensor is a Bluetooth tire pressure sensor which does not participate in network management, the receiver is a Bluetooth module on Tbox hardware, and the controller is a Tbox built-in chip; according to the system, the Tbox is used for replacing a traditional TPMS controller and a receiver, equivalently, one controller is saved, and the hardware cost of the whole vehicle is reduced; meanwhile, IDs of the Bluetooth tire pressure sensors are in one-to-one correspondence with vehicle tires and interact with a vehicle-mounted system, a driver can check corresponding information of the tires on an instrument panel or a vehicle machine display screen, when the tires are abnormal, the driver can be reminded, and the problem that in the prior art, the specific tires with faults cannot be accurately detected is solved; the safety of the vehicle is improved; the problems that a commercial vehicle is too long and wireless signals are not good are solved.

Description

Technical Field

[0001] The present invention relates to the field of automotive electronics, and in particular to a tire pressure management system based on Bluetooth controlled by a remote communication terminal. Background Art

[0002] With the rapid development of the automobile industry, various advanced safety and functional configurations have gradually become an indispensable part of modern automobiles. As one of the important vehicle safety configurations, the tire pressure monitoring system (TPMS) has been widely used in various types of automobiles, especially commercial vehicles. The tire pressure monitoring system (TPMS) can timely alarm tire leakage or low pressure by monitoring the tire pressure and temperature in real time, thereby effectively avoiding traffic accidents caused by abnormal tire pressure and ensuring the driving safety of drivers. Tire pressure monitoring systems (TPMS) are mainly divided into two types: direct and indirect. Direct TPMS installs sensors in each tire to detect tire pressure and temperature in real time and transmit the information to the in-vehicle display system; indirect TPMS indirectly determines abnormal tire pressure through changes in parameters such as vehicle speed and tire speed. The existing tire pressure monitoring system has the following disadvantages in detecting tire pressure: The existing tire pressure monitoring system cannot accurately point out which tire has low pressure. In particular, when two tires on the same axle or the same side are in a low pressure state, the system cannot effectively identify which tire has an underinflation problem. In addition, when all four tires are in a low pressure state at the same time, it is difficult for the existing system to detect this fault in time, resulting in the possibility of missing safety warnings for the driver. 2. For commercial vehicles, especially long trucks, trailers and large transport vehicles, the length of these vehicles can be close to 20 meters, and they have a large number of tires. Traditional TPMS systems are difficult to effectively monitor such a large vehicle structure; due to the limited signal transmission distance between the tire sensors of these vehicles, the air pressure of some tires cannot be detected in time, especially when the signal is attenuated or lost during the operation of the vehicle. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a tire pressure management system based on Bluetooth controlled by a remote communication terminal.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A tire pressure management system based on Bluetooth controlled by a remote communication terminal, comprising a sensor, a controller, and a receiver; The sensor is a Bluetooth tire pressure sensor that does not participate in network management and is installed on the tire to monitor the tire pressure, temperature, status information, etc. in real time; The receiver is a Bluetooth module on the Tbox hardware, which is used to receive data sent by the Bluetooth tire pressure sensor and transmit the data to the controller for processing; The controller is a built-in chip of Tbox, which is used to receive transmitted data and communicate with other devices through the Bluetooth module; Specifically, a Bluetooth tire pressure sensor is installed on each tire of a large vehicle such as a commercial vehicle in advance, each Bluetooth tire pressure sensor has a unique ID, and the ID of each Bluetooth tire pressure sensor is bound to the position identifier of the vehicle tire through a preset rule, that is, one Bluetooth tire pressure sensor corresponds to one vehicle tire; the position identifier of the tire includes the front left tire, the front right tire, the rear left tire, the rear right tire, etc., and the position identifier is unique; The Bluetooth tire pressure sensor installed on the tires of large vehicles such as commercial vehicles will monitor the tire pressure, temperature, status information and the ID of the Bluetooth tire pressure sensor in real time and send it to the receiver, i.e. the Bluetooth module on the Tbox hardware, via Bluetooth; the status information includes whether the tire pressure is within the normal range, whether the tire temperature is too high, whether the tire is deflated, etc.; The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, which is the chip built into the Tbox; The built-in chip of Tbox performs ID matching on the received data, that is, it determines the tire corresponding to the data according to the ID of the Bluetooth tire pressure sensor and stores the data; Furthermore, the Tbox built-in chip interacts with the instrument panel and the vehicle system, so the owner or driver can view the corresponding information of the tire on the instrument panel or the vehicle display; If there is an abnormality in a tire, the built-in chip of Tbox sends an alarm signal to the vehicle system through the Bluetooth module, and it is displayed on the dashboard or the car display screen to remind the driver. The driver can check the specific tire with the abnormality.

[0005] Compared with the prior art, the present invention has the following beneficial effects: This system uses Tbox to replace the traditional TPMS controller, which is equivalent to saving a controller and reducing the hardware cost of the whole vehicle. At the same time, the ID of the Bluetooth tire pressure sensor corresponds to the vehicle tire one by one and interacts with the on-board system. The driver can view the corresponding information of the tire on the dashboard or the car display. When there is an abnormality in the tire, the driver will be reminded, which solves the problem in the existing technology that it is impossible to accurately identify the specific faulty tire and improves the safety of the vehicle.

[0006] Preferably, since the front wheel is closer to the front of the vehicle, the Bluetooth signal transmission distance is short and is usually transmitted in a straight line, the signal transmission between the front wheel sensor and the Tbox is not easily interfered with, so the signal is stable and effective; since the rear tire is farther away from the Tbox, and there may be obstacles such as the vehicle body, seat, engine, etc. in the middle, the directly transmitted signal may encounter strong attenuation or interference, so the signal of the rear tire cannot be directly transmitted to the Tbox; for the problem of poor Bluetooth signal reception of the rear tire due to the long body of large vehicles such as commercial vehicles, the present invention proposes the following solution: Tbox is still the main controller, and the specific tires in the commercial vehicle are divided into front tires and rear tires in advance. The front tires and rear tires correspond to multiple tires. A Bluetooth relay sensor is added between the rear tire and Tbox. The Bluetooth tire pressure sensor communicates directly with the Bluetooth relay sensor and forwards the signal to Tbox for processing, thereby realizing the relay transmission of the rear tire signal.

[0007] By adding a Bluetooth relay sensor between the rear tire and the Tbox to transmit the rear tire signal, the signal can be relayed through the relay sensor, avoiding signal attenuation or loss caused by a long signal transmission path or obstacles, thereby ensuring stable transmission of the rear tire signal; effectively enhancing the reliability of signal transmission and avoiding signal attenuation or loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram of controlling a Bluetooth-based tire pressure management system through a remote communication terminal according to the present invention; Figure 2 A schematic diagram of adding a transfer Bluetooth sensor to a tire pressure management system based on Bluetooth controlled by a remote communication terminal and transferring via Bluetooth according to the present invention; Figure 3 A schematic diagram of the present invention of adding a transfer Bluetooth sensor to a tire pressure management system based on Bluetooth controlled by a remote communication terminal and transferring through a LIN bus; Figure 4 The present invention is a schematic diagram of adding a transfer Bluetooth sensor to a tire pressure management system based on Bluetooth controlled by a remote communication terminal and transferring through a CAN bus. DETAILED DESCRIPTION

[0009] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0010] like Figure 1 , 2 , 3, and 4, a tire pressure management system based on Bluetooth controlled by a remote communication terminal, including a sensor, a controller, and a receiver; The sensor is a Bluetooth tire pressure sensor that does not participate in network management and is installed on the tire to monitor the tire pressure, temperature, status information, etc. in real time; The receiver is a Bluetooth module on the Tbox hardware, which is used to receive data sent by the Bluetooth tire pressure sensor and transmit the data to the controller for processing; The controller is a built-in chip of Tbox, which is used to receive transmitted data and communicate with other devices through the Bluetooth module; Specifically, a Bluetooth tire pressure sensor is installed on each tire of a large vehicle such as a commercial vehicle in advance, each Bluetooth tire pressure sensor has a unique ID, and the ID of each Bluetooth tire pressure sensor is bound to the position identifier of the vehicle tire through a preset rule, that is, one Bluetooth tire pressure sensor corresponds to one vehicle tire; the position identifier of the tire includes the front left tire, the front right tire, the rear left tire, the rear right tire, etc., and the position identifier is unique; The Bluetooth tire pressure sensor installed on the tires of large vehicles such as commercial vehicles will monitor the tire pressure, temperature, status information and the ID of the Bluetooth tire pressure sensor in real time and send it to the receiver, i.e. the Bluetooth module on the Tbox hardware, via Bluetooth; the status information includes whether the tire pressure is within the normal range, whether the tire temperature is too high, whether the tire is deflated, etc.; The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, which is the chip built into the Tbox; The built-in chip of Tbox performs ID matching on the received data, that is, it determines the tire corresponding to the data according to the ID of the Bluetooth tire pressure sensor and stores the data; Furthermore, the Tbox built-in chip interacts with the instrument panel and the vehicle system, so the owner or driver can view the corresponding information of the tire on the instrument panel or the vehicle display; If there is an abnormality in a tire, the built-in chip of Tbox sends an alarm signal to the vehicle system through the Bluetooth module, and it is displayed on the dashboard or the car display screen to remind the driver. The driver can check the specific tire with the abnormality.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This system uses Tbox to replace the traditional TPMS controller, which is equivalent to saving a controller, reducing the hardware cost of the whole vehicle and improving the production cycle. At the same time, the ID of the Bluetooth tire pressure sensor corresponds to the vehicle tire one by one and interacts with the vehicle system. The driver can view the corresponding information of the tire on the dashboard or the car display. When there is an abnormality in the tire, the driver will be reminded, which solves the problem that the existing technology cannot accurately identify the specific faulty tire and improves the safety of the vehicle. This system saves a network node for the entire vehicle network, reduces signal transmission and reception, makes network management more efficient, and reduces network load. For software development, compared with traditional RF modules, Bluetooth modules have complete protocol and interface definitions, good encapsulation, and are easy to develop. At the same time, because the controller directly receives Bluetooth signals after pairing once, there is no need for specific requests to locate the tire and repeated pairing, which increases reliability.

[0012] Preferably, since the front wheel is closer to the front of the vehicle, the Bluetooth signal transmission distance is short and is usually transmitted in a straight line, and the signal transmission between the front wheel sensor and the Tbox is not easily interfered with, so the signal is stable and effective; Since the rear tire is farther away from the Tbox, and there may be obstacles such as the vehicle body, seat, engine, etc. in the middle, the Bluetooth channel attenuates with the distance and the attenuation of the surrounding vehicle speed, resulting in the direct transmission signal may encounter strong attenuation or interference. Therefore, the signal of the rear tire cannot be directly transmitted to the Tbox; For the problem of poor Bluetooth signal reception of the rear tire due to the long body of large vehicles such as commercial vehicles, the present invention proposes the following three expansion schemes: Tbox is still used as the main controller, and the specific tires in the commercial vehicle are divided into front tires and rear tires in advance. The front tires and rear tires correspond to multiple tires. A Bluetooth relay sensor is added between the rear tire and Tbox. The Bluetooth tire pressure sensor communicates directly with the Bluetooth relay sensor and forwards the signal to Tbox for processing, thereby realizing the relay transmission of the rear tire signal. By adding a Bluetooth relay sensor between the rear tire and the Tbox to transmit the rear tire signal, the signal can be relayed through the relay sensor, avoiding signal attenuation or loss caused by a long signal transmission path or obstacles, thereby ensuring stable transmission of the rear tire signal; effectively enhancing the reliability of signal transmission and avoiding signal attenuation or loss.

[0013] Solution 1: Bluetooth transfer solution; The Bluetooth tire pressure sensor of the front tire of the commercial vehicle directly sends the acquired tire pressure, temperature, ID, status information and other data of the Bluetooth tire pressure sensor to the receiver, that is, the Bluetooth module on the Tbox hardware, via Bluetooth; the Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox; The Bluetooth tire pressure sensor of the rear tire sends the acquired tire pressure, temperature, ID, status information and other data to the Bluetooth relay sensor via Bluetooth. After receiving the data from the rear tire, the Bluetooth relay sensor forwards the data to the receiver, that is, the Bluetooth module on the Tbox hardware. The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox. The Bluetooth relay sensor includes a Bluetooth chip; The introduction of the Bluetooth relay solution through the relay sensor avoids complex transmission lines or more expensive sensor systems, has low cost, wireless connection throughout the process, saves a lot of wiring harnesses, and solves the problem that the rear tire pressure signal cannot reach the Tbox directly.

[0014] Solution 2: LIN bus transfer solution; The Bluetooth tire pressure sensor of the front tire of the commercial vehicle directly sends the acquired tire pressure, temperature, ID, status information and other data of the Bluetooth tire pressure sensor to the receiver, that is, the Bluetooth module on the Tbox hardware, via Bluetooth; the Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox; The Bluetooth tire pressure sensor of the rear tire sends the acquired tire pressure, temperature, ID, status information and other data of the Bluetooth tire pressure sensor via Bluetooth to the Bluetooth relay sensor. After receiving the data of the rear tire, the Bluetooth relay sensor converts it into a LIN bus signal and transmits the data to the receiver, that is, the Bluetooth module on the Tbox hardware, via the LIN bus. The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox. The Bluetooth transfer sensor includes a Bluetooth chip, a LIN chip, and an MCU integrated circuit chip; The LIN bus is used as the transmission method for the rear tire signal. Compared with Bluetooth signals, it is not affected by vehicle and road conditions, has strong anti-interference ability, reduces costs and has strong real-time performance.

[0015] Solution 3: CAN bus transfer solution; The Bluetooth tire pressure sensor of the front tire of the commercial vehicle directly sends the acquired tire pressure, temperature, ID, status information and other data of the Bluetooth tire pressure sensor to the receiver, that is, the Bluetooth module on the Tbox hardware, via Bluetooth; the Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox; The Bluetooth tire pressure sensor of the rear tire sends the acquired tire pressure, temperature, ID, status information and other data of the Bluetooth tire pressure sensor via Bluetooth to the Bluetooth relay sensor. After receiving the data of the rear tire, the Bluetooth relay sensor converts it into a CAN bus signal and transmits the data to the receiver, that is, the Bluetooth module on the Tbox hardware, via the CAN bus. The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox. The Bluetooth transfer sensor includes a Bluetooth chip, a CAN chip, and an MCU integrated circuit chip.

[0016] The CAN bus is used as the transmission method for the rear tire signal. It has high transmission speed and reliability, can handle larger amounts of data transmission and more complex communication requirements, and is suitable for complex systems that require high data transmission bandwidth.

[0017] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A tire pressure management system based on Bluetooth controlled by a remote communication terminal, characterized in that: The system includes a sensor, a controller, and a receiver; The sensor is a Bluetooth tire pressure sensor that does not participate in network management and is installed on the tire to monitor the tire pressure, temperature, and status information of the tire in real time; The receiver is a Bluetooth module on the Tbox hardware, which is used to receive data sent by the Bluetooth tire pressure sensor and transmit the data to the controller for processing; The controller is a built-in chip of Tbox, which is used to receive transmitted data and communicate with other devices through the Bluetooth module; Preferably, the Tbox is used as the main controller, and the specific tires in the commercial vehicle are divided into front tires and rear tires in advance, and the front tires and rear tires each correspond to multiple tires; a Bluetooth relay sensor is added between the rear tire and the Tbox, and the Bluetooth tire pressure sensor communicates directly with the Bluetooth relay sensor and forwards the signal to the Tbox for processing.

2. The tire pressure management system based on Bluetooth controlled by a remote communication terminal as claimed in claim 1, characterized in that: A Bluetooth tire pressure sensor is installed on each tire of a large vehicle in advance. Each Bluetooth tire pressure sensor has a unique ID. The ID of each Bluetooth tire pressure sensor is bound to the location identifier of the vehicle tire through a preset rule, that is, one Bluetooth tire pressure sensor corresponds to one vehicle tire; the location identifier is unique; The Bluetooth tire pressure sensor will monitor the tire pressure, temperature, status information and the ID of the Bluetooth tire pressure sensor in real time and send it to the receiver via Bluetooth, that is, the Bluetooth module on the Tbox hardware; The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, which is the chip built into the Tbox; The built-in chip of Tbox performs ID matching on the received data, that is, determines the tire corresponding to the data according to the ID of the Bluetooth tire pressure sensor, and stores the data.

3. The tire pressure management system based on Bluetooth controlled by a remote communication terminal as claimed in claim 1, characterized in that: The Tbox built-in chip interacts with the instrument panel and vehicle system, and the owner or driver can view the corresponding information of the tire on the instrument panel or vehicle display screen; If there is an abnormality in a tire, the built-in chip of Tbox sends an alarm signal to the vehicle system through the Bluetooth module, and it is displayed on the dashboard or the car display screen to remind the driver to check the specific tire with the abnormality.

4. The tire pressure management system based on Bluetooth controlled by a remote communication terminal as claimed in claim 3, characterized in that: Signal transfer via Bluetooth: The Bluetooth tire pressure sensor of the front tire of the commercial vehicle directly sends the acquired tire pressure, temperature, and ID and status information of the Bluetooth tire pressure sensor to the receiver, i.e. the Bluetooth module on the Tbox hardware, via Bluetooth; the Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, i.e. the built-in chip of the Tbox; The Bluetooth tire pressure sensor of the rear tire sends the acquired tire pressure, temperature, ID and status information of the Bluetooth tire pressure sensor to the Bluetooth relay sensor via Bluetooth. After receiving the data of the rear tire, the Bluetooth relay sensor forwards the receiver, that is, the Bluetooth module on the Tbox hardware; the Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox; The Bluetooth relay sensor includes a Bluetooth chip.

5. The tire pressure management system based on Bluetooth controlled by a remote communication terminal as claimed in claim 3, characterized in that: Signal transfer via LIN bus: The Bluetooth tire pressure sensor of the front tire of the commercial vehicle directly sends the acquired tire pressure, temperature, ID and status information of the Bluetooth tire pressure sensor to the receiver, i.e. the Bluetooth module on the Tbox hardware, via Bluetooth; the Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, i.e. the built-in chip of Tbox; The Bluetooth tire pressure sensor of the rear tire sends the acquired tire pressure, temperature, ID and status information of the Bluetooth tire pressure sensor to the Bluetooth relay sensor via Bluetooth. After receiving the data of the rear tire, the Bluetooth relay sensor converts it into a LIN bus signal and transmits the data to the receiver, that is, the Bluetooth module on the Tbox hardware, via the LIN bus. The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, that is, the built-in chip of the Tbox. The Bluetooth relay sensor includes a Bluetooth chip, a LIN chip, and an MCU integrated circuit chip.

6. The tire pressure management system based on Bluetooth controlled by a remote communication terminal as claimed in claim 3, characterized in that: Signal transfer via CAN bus: The Bluetooth tire pressure sensor of the front tire of the commercial vehicle directly sends the acquired tire pressure, temperature, ID and status information of the Bluetooth tire pressure sensor to the receiver, i.e. the Bluetooth module on the Tbox hardware, via Bluetooth; the Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, i.e. the built-in chip of Tbox; The Bluetooth tire pressure sensor of the rear tire sends the acquired tire pressure, temperature, ID and status information of the Bluetooth tire pressure sensor to the Bluetooth relay sensor via Bluetooth. After receiving the data of the rear tire, the Bluetooth relay sensor converts it into a CAN bus signal and transmits the data to the receiver, i.e. the Bluetooth module on the Tbox hardware, via the CAN bus. The Bluetooth module on the Tbox hardware receives the data and transmits the received data to the controller, i.e. the built-in chip of the Tbox. The Bluetooth transfer sensor includes a Bluetooth chip, a CAN chip, and an MCU integrated circuit chip.

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