WO2013155952A1 - Tpms传感器及其程序载入和选择方法 - Google Patents

Tpms传感器及其程序载入和选择方法 Download PDF

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Publication number
WO2013155952A1
WO2013155952A1 PCT/CN2013/074240 CN2013074240W WO2013155952A1 WO 2013155952 A1 WO2013155952 A1 WO 2013155952A1 CN 2013074240 W CN2013074240 W CN 2013074240W WO 2013155952 A1 WO2013155952 A1 WO 2013155952A1
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Prior art keywords
tpms
program
sensor
tpms sensor
download interface
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PCT/CN2013/074240
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English (en)
French (fr)
Inventor
李威
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上海保隆汽车科技股份有限公司
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Publication of WO2013155952A1 publication Critical patent/WO2013155952A1/zh

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Classifications

    • 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
    • B60C23/0471—System initialisation, e.g. upload or calibration of operating parameters
    • 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
    • B60C23/0479—Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations
    • 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
    • B60C23/0491—Constructional details of means for attaching the control device
    • B60C23/0494—Valve stem attachments positioned inside the tyre chamber

Definitions

  • the present invention relates to a tire pressure monitoring system (TPMS), and more particularly to a sensor for a TPMS system, and a program loading method for the sensor.
  • TPMS tire pressure monitoring system
  • the Tire Pressure Monitor System (TPMS) is used to automatically monitor the tire pressure during real-time driving and to alert the tires to leaks and low air pressure to ensure safe driving.
  • the TPMS system has sensors installed in each tire to monitor pressure changes.
  • a large number of TPMS sensors are currently used, but due to the lack of uniform specifications, most manufacturers' sensors are not interchangeable with each other, and even sensors of different models of the same manufacturer cannot be interchanged with each other. This has led car maintenance providers to require a large inventory of sensors to meet the needs of different customers for TPMS sensors.
  • One existing solution is to provide a universal sensor whose performance or characteristics are determined by a later loaded program.
  • a sensor that can store a large number of sensor programs uses a wireless programming program to adapt the sensor to a variety of models.
  • the disadvantage of this scheme is that the wireless sensor can only load one program when it is programmed once, and the wireless programming speed is slow, and only one car can be satisfied, and each dealer needs to separately purchase the sensor programming program. Tools, high cost.
  • Another existing solution is to pre-store sensor programs containing a large number of protocols in the sensor, such as sensor protocols for various companies and various vehicle models.
  • the sensor configures the corresponding sensor protocol by identifying the signal information of the TPMS learning tool, enabling one sensor to accommodate a wide range of vehicle types.
  • the disadvantage of this solution is that the sensor's program cannot be updated.
  • the technical problem to be solved by the present invention is to provide a TPMS sensor capable of quickly programming a plurality of sensor programs including a protocol and updating the program, and a program loading and selecting method thereof.
  • the technical solution adopted by the present invention to solve the above technical problem is to provide a sensor for a tire pressure monitoring system TPMS, which comprises a program download interface, a microcontroller and a low frequency circuit.
  • the program download interface is used to connect A program containing a protocol loaded into the TPMS sensor via a connection line is received by a TPMS programming device to implement wired programming.
  • the microcontroller has a non-volatile memory that is coupled to the program download interface and stores the program in the non-volatile memory.
  • the low frequency circuit is coupled to the microcontroller to receive a low frequency wireless selection signal transmitted by a TPMS learning tool, wherein the microcontroller selects a program from the plurality of protocols including the protocol for operation based on the selection signal.
  • the program download interface is located on a side of the housing of the TPMS sensor, and the TPMS sensor has a plurality of metal terminals embedded in the housing and connected to a circuit board in the housing. .
  • the senor further includes a sealing plug for sealing the program download interface.
  • the program download interface is a duplex or half duplex serial communication interface.
  • the present invention also provides a program loading and selection method for a TPMS sensor.
  • the TPMS sensor has a program download interface, and the method includes the following steps: connecting the program download interface of the TPMS sensor to a TPMS programming device through a connection line; Loading, by the TPMS programming device, a plurality of programs including protocols from the TPMS sensor; transmitting a low frequency wireless selection signal from the TPMS learning tool to the TPMS sensor; and extracting from the plurality of TPMS sensors according to the selection signal Select one of the programs that contain the protocol to run.
  • the program download interface communicates by duplex or half-duplex serial communication.
  • the TPMS programming device is a desktop computer, a notebook computer, a tablet computer or a mobile phone.
  • the present invention by adopting the above technical solution, can update the program with the appearance of a new TPMS sensor as compared with the prior art, and can also increase the types of sensor protocols that can be selected by the TPMS learning tool.
  • the entire wired programming process can be completed in 30 seconds to 40 seconds.
  • the TPMS sensor is a universal sensor that can adapt to a variety of models.
  • the programming time can be greatly shortened, and the method of selecting the protocol by wireless means is quick and convenient.
  • FIG. 1 is a block diagram showing the structure of a sensor according to an embodiment of the present invention.
  • Fig. 2 is a view showing the appearance of a sensor according to an embodiment of the present invention.
  • FIG. 3 is a flow chart showing program loading and selection in accordance with an embodiment of the present invention. detailed description
  • program loading and selection of TPMS sensors is accomplished using a combination of TPMS programming devices and TPMS tools.
  • the function of the TPMS programming device is to quickly program the TPMS sensor by wire.
  • the TPMS programming device can be implemented as a general purpose electronic device such as a desktop computer, a notebook computer, a tablet computer, a mobile phone, or the like, which can be a host.
  • the software required to program the sensor can be installed and loaded into the TPMS sensor after establishing a connection with the TPMS sensor.
  • the TPMS learning tool is a handheld electronic device that uses a wireless method to select a program from multiple programs stored by the TPMS sensor.
  • the TPMS learning tool can be a commercially available TPMS learning tool.
  • the TPMS sensor of this embodiment has the same function as the existing TPMS sensor, and is used for real-time monitoring of tire pressure and temperature, and alarming for leaks, low pressure and the like. Different from the existing sensors, the sensor of this embodiment has a program download interface, which can realize wired fast burning.
  • the TPMS sensor 10 may have a microcontroller (MCU) 11, a clock 12, a temperature, a pressure sensor 13, a low frequency circuit 14, a radio frequency (RF) circuit 15, a program download interface 16, and a power source 17.
  • the MCU 11 is the core of the sensor 10 and controls the operation of the sensor 10.
  • the MCU 1 1 may include non-volatile memory to store the programs and data required by the sensor 10.
  • the clock 12, the temperature, the pressure sensor 13, the low frequency circuit 14, the radio frequency (RF) circuit 15, and the program download interface 16 are all connected to the MCU 1 1.
  • a power source 17 is used to power the sensor 10.
  • the RF circuit 15 of the sensor 10 is coupled to an antenna for receiving and/or transmitting signals.
  • the sensor 10 can transmit temperature, pressure data, and the like through the RF circuit 15.
  • the program download interface 16 is a wired interface that can be connected to a TPMS programming device via a data line, such as a desktop computer, a notebook computer, etc., and receives data input, such as a program, from a TPMS programming device.
  • the program received by the program download interface 16 is input to the MCU 1 1, and the latter is stored in the non-volatile memory.
  • the program download interface 16 is provided on the side of the housing 20 of the sensor 10.
  • the program download interface 16 can be a serial communication interface, and communicates by duplex or half-duplex serial communication.
  • the program download interface 16 employs an inlay process to embed the metal terminals in the housing 20 for connection to a printed circuit board within the housing for sealing purposes.
  • the circuit design of Electro-Static discharge (ESD) can be added on the printed circuit board to meet the requirements of static discharge.
  • a sealing plug 21 is added on the outside of the program download interface 16 to achieve the design requirements for protecting the cleaning port from oxidation and oxidation.
  • the low frequency circuit 14 of the sensor 10 is for receiving a low frequency sensing signal, which may be a sensor on the one hand
  • each program can include one or more protocols, such as a communication protocol. After the program is selected, the protocol will also determine that the sensor 10 will be available for a particular style of protocol. In addition, sensor 10 can still receive the selection signal again in order to select another program and protocol.
  • the learning tool communicates with the sensor through low frequency communication to complete the protocol selection function.
  • FIG. 3 is a flow chart showing program loading and selection in accordance with an embodiment of the present invention.
  • a bootloading (BootLoad) is performed in step 31, and then in step 32, it is determined whether a program is to be updated.
  • the TPMS sensor 10 can detect whether it is connected to a TPMS programming device.
  • the TPMS programming device requests the update program from the program download interface 16, if the result is yes, then proceeds to step 33, updating the application, at which time the TPMS programming device loads the program to the TPMS sensor 10 through the program download interface 16. .
  • the TPMS sensor 10 can be programmed to include a plurality of sensor programs having a size of 4K or less including the protocol.
  • step 34 after the update is complete, return to step 31.
  • the TPMS sensor 10 can identify the signals of the TPMS learning tool. Continuing to refer to FIG. 3, in step 35, after the sensor 10 loaded in the program receives the signal of the selected vehicle type of the TPMS learning tool, in step 36, the sensor program of the corresponding kind stored in the sensor is selected, and then in step 37. Run the sensor program. If the sensor 10 does not receive a signal for the selected vehicle, skip step 36 and run the sensor program directly in step 37.
  • the benefit of the TPMS sensor of the present invention and its loading method is that the program can be updated with the advent of new TPMS sensors, and the variety of sensor programs that can be selected by the TPMS learning tool can be increased.
  • the TPMS sensor is a universal sensor that can adapt to a variety of models. And, profit With the wired program programming method, the programming time can be greatly shortened, and the method of selecting the program and the protocol by wireless means is quick and convenient.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

一种轮胎压力监测系统TPMS的传感器（10）及其程序载入和选择方法，该传感器（10）包括程序下载接口（16）、微控制器（11）和低频电路（14）；该程序下载接口（16）用于接收TPMS烧写设备经连接线载入至该TPMS传感器（10）的多个包含协议的程序，以实现有线烧写；该微控制器（11）连接该程序下载接口（16），具有非易失性存储器，并将程序存储到该非易失性存储器上；该低频电路（14）连接该微控制器（11），接收TPMS学习工具发送的低频无线选择信号，该微控制器（11）根据该选择信号从该多个包含协议的程序中选择一个程序用于运行。

Description

TPMS传感器及其程序载入和选择方法 技术领域
本发明涉及轮胎压力监测系统 （TPMS ) ， 尤其是涉及 TPMS系统的传感器， 以 及传感器的程序载入方法。 背景技术
轮胎压力监测系统 （ Tire Pressure Monitor System, TPMS ) 的作用是在汽车行驶 过程中对轮胎气压进行实时自动监测， 并对轮胎漏气和低气压进行报警， 以确保行车 安全。 TPMS系统在各个轮胎中安装有传感器以监测压力变化。 当前有大量的 TPMS 传感器被使用， 但是由于缺乏统一的规格， 大多数厂家的传感器彼此不能互换， 甚至 同一厂家的不同车型的传感器彼此也不能互换。这导致汽车维护商需要大量的传感器 储备， 以满足不同客户对 TPMS传感器的需求。
一种现有的解决方案是， 提供一种通用的传感器， 传感器的性能或特点由后来 载入的程序确定。 通过存储大量传感器程序的工具对传感器采用无线烧写程序的方 式， 使一种传感器可以适应多种车型。但这种方案的缺点是无线的传感器烧写一次程 序大约只能载入一个程序， 而且无线烧写速度慢， 并只能满足一款车， 且每个经销商 都需要单独购买传感器烧写程序的工具， 成本高。
另一种现有的解决方案是， 在传感器内预先存储有内含大量协议的传感器程序， 例如各个公司以及各种车型的传感器协议。传感器通过识别 TPMS学习工具的信号信 息， 配置相应的传感器协议， 使一种传感器可以适应多种车型。 但这种方案的缺点是 传感器的程序不能更新。虽然传感器内存储的大量传感器协议可以满足当前大多数汽 车的需求， 但是仍然不能满足不断出现的新车型的对新的传感器的需求。 发明内容
本发明所要解决的技术问题是提供一种既可快速烧写多个包含协议的传感器程 序， 又能实现程序更新的 TPMS传感器及其程序载入和选择方法。
本发明为解决上述技术问题而采用的技术方案是提出一种轮胎压力监测系统 TPMS的传感器， 包括程序下载接口、 微控制器和低频电路。 该程序下载接口用于接 收一 TPMS烧写设备经连接线载入至该 TPMS传感器的多个包含协议的程序， 以实现有 线烧写。 该微控制器具有非易失性存储器， 该微控制器连接该程序下载接口， 并将程 序存储到该非易失性存储器中。该低频电路连接该微控制器， 接收一 TPMS学习工具 发送的低频无线选择信号， 其中该微控制器根据该选择信号从该多个包含协议的程序中 选择一个程序用于运行。
在本发明的一实施例中， 该程序下载接口位于该 TPMS传感器的壳体一侧， 该 TPMS传感器具有多个金属端子， 该多个金属端子嵌入该壳体内， 与该壳体内的电路 板连接。
在本发明的一实施例中， 该传感器还包括一密封塞， 用于密封该程序下载接口。 在本发明的一实施例中， 该程序下载接口为双工或半双工串行通信接口。
本发明还提出一种 TPMS传感器的程序载入和选择方法， 该 TPMS传感器具有 一程序下载接口， 该方法包括以下步骤： 将该 TPMS传感器的程序下载接口通过连接 线连接到一 TPMS烧写设备； 从该 TPMS烧写设备向该 TPMS传感器中载入多个包 含协议的程序； 从一 TPMS学习工具向该 TPMS传感器传输一低频无线选择信号； 以 及在该 TPMS传感器中根据该选择信号从该多个包含协议的程序中选择一个程序用 于运行。
在本发明的一实施例中， 该程序下载接口采用双工或半双工串行通信方式进行 通信。
在本发明的一实施例中， 该 TPMS烧写设备为台式计算机、 笔记本计算机、 平 板电脑或移动电话。
本发明由于采用以上技术方案， 使之与现有技术相比， 可以随着新的 TPMS传 感器的出现而更新程序， 也可增加可以供 TPMS学习工具选择的传感器协议的种类。 整个有线烧写过程可在 30秒至 40秒内全部完成。 同时， 在终端客户处， TPMS传感 器又是一种可以适应多种车型的通用型传感器。 并且， 利用有线的程序烧写方式， 可 以大大縮短烧写时间， 而通过无线方式选择协议的方式操作快捷方便。 附图概述
本发明的特征、 性能由以下的实施例及其附图进一步描述。
图 1示出本发明一实施例的传感器结构框图。 图 2示出本发明一实施例的传感器外观图。
图 3示出本发明一实施例的程序载入及选择流程图。 具体实施方式
根据本发明的实施例， 使用 TPMS烧写设备、 TPMS工具的结合来实现 TPMS 传感器的程序载入及选择。 TPMS烧写设备的作用是通过有线的方式向 TPMS传感器 快速烧写程序。在本发明的实施例中， TPMS烧写设备可以实施为能够作为主机（host) 的台式计算机、 笔记本计算机、 平板计算机、 移动电话等通用电子设备或者其他专用 设备。对 TPMS烧写设备来说，其上可安装烧写传感器程序所需的软件，并在与 TPMS 传感器建立连接后， 向 TPMS传感器载入程序。
TPMS学习工具为一个手持电子设备， 其作用是利用无线方式来从 TPMS传感 器所储存的多个程序选择一个程序。 TPMS学习工具可以是市面上销售的 TPMS学习 工具。
本实施例的 TPMS传感器与现有 TPMS传感器的功能相同， 均是用于实时监测 轮胎压力、 温度， 并对漏气、 低压等故障进行报警。 与现有传感器不同的是， 本实施 例的传感器带有程序下载接口， 可以实现有线快速烧程。
图 1示出本发明一实施例的传感器结构框图。 参照图 1所示， TPMS传感器 10 可具有微控制器（MCU) 11、时钟 12、温度、压力传感器 13、低频电路 14、射频（RF) 电路 15、 程序下载接口 16以及电源 17。 MCU 11是传感器 10的核心， 控制传感器 10的工作过程。 MCU 1 1可包含非易失性存储器， 以储存传感器 10所需的程序和数 据。 时钟 12、 温度、 压力传感器 13、 低频电路 14、 射频 （RF) 电路 15、 程序下载 接口 16均连接到 MCU 1 1。 电源 17用于为传感器 10供电。
传感器 10的射频电路 15连接有天线， 用以接收和 /或发射信号。 例如传感器 10 可通过射频电路 15发射温度、 压力数据等信息。
程序下载接口 16为有线接口， 它可以通过数据线连接到 TPMS烧写设备， 例如 台式计算机、 笔记本计算机等， 并从 TPMS烧写设备接收数据输入， 例如程序。 程序 下载接口 16接收的程序输入至 MCU 1 1， 由后者存储到非易失性存储器中。 参照图 2 所示的本发明一实施例的传感器外观图， 程序下载接口 16设于传感器 10的壳体 20— 侧。 程序下载接口 16可为串行通信接口， 采用双工或半双工串行通信方式进行通信。 在一实施例中， 程序下载接口 16采用嵌件工艺将金属端子嵌入壳体 20内， 与 壳体内的印刷电路板连接， 以达到其密封的目的。 另外在印刷电路板上可增加静电释 放 （Electro-Static discharge, ESD) 的电路设计， 以达到放静电的要求。 较佳地， 在程 序下载接口 16外面加密封塞 21， 以实现保护下载口清洁、 防氧化的设计要求。
传感器 10的低频电路 14用于接收低频感应信号， 这一信号一方面可为传感器
10提供低频唤醒功能， 另一方面可接收 TPMS学习工具的选择信号， 并传输给 MCU 11。 MCU 11可据此从非易失性存储器中所储存的多个程序中选择一个程序用于运行。 通常， 每一程序可包含一种或多种协议， 例如通信协议。在程序选定后， 协议也将确定， 传感器 10将能用于特定的款式的协议。 另外， 传感器 10仍可再次接收选择信号， 以 便选择另一程序及协议。学习工具通过低频通信方式与传感器进行通信， 完成协议选 择功能。
在 TPMS传感器 10生产完毕后， 其内部尚未储存任何传感器程序， TPMS烧写 设备可以通过有线烧写的方式， 向 TPMS传感器内写入不同种类的多个传感器程序， 每一传感器程序包含协议。 这样， TPMS传感器内将包含多种协议。 图 3示出本发明 一实施例的程序载入及选择流程图。 参照图 3所示， 在 TPMS传感器 10上电后， 在 步骤 31进行加载启动（BootLoad)，接着在步骤 32判断是否有程序要更新，例如 TPMS 传感器 10可以检测是否连接到一 TPMS烧写设备， 且该 TPMS烧写设备是否通过程 序下载接口 16向其要求更新程序， 若结果为是， 则进入步骤 33， 更新应用程序， 此 时 TPMS烧写设备通过程序下载接口 16向 TPMS传感器 10载入程序。在此， 由于有 线烧写的速度较快， 一般在 30到 40秒内完成整个烧写过程， 可一次性向 TPMS传感 器 10烧写含多个包含协议的 4K以内大小的传感器程序。 在步骤 34， 更新完成后， 返回步骤 31。
TPMS传感器 10可以识别 TPMS学习工具的信号。 继续参考图 3所示， 在步骤 35，当载入程序后的传感器 10收到 TPMS学习工具的选择车型的信号后，在步骤 36， 选择传感器内存储的对应种类的传感器程序， 然后在步骤 37运行传感器程序。 如果 传感器 10未收到选择车型的信号， 则跳过步骤 36， 直接在步骤 37运行传感器程序。
本发明的 TPMS传感器及其载入方法的好处是， 可以随着新的 TPMS传感器的 出现而更新程序， 可以增加可以供 TPMS学习工具选择的传感器程序的种类。 同时， 在终端客户处， TPMS传感器又是一种可以适应多种车型的通用型传感器。 并且， 利 用有线的程序烧写方式， 可以大大縮短烧写时间， 而通过无线方式选择程序及协议的 方式操作快捷方便。

Claims

权 利 要 求
1. 一种轮胎压力监测系统 TPMS的传感器， 包括：
程序下载接口， 用于接收一 TPMS烧写设备经连接线载入至该 TPMS传感器的 多个包含协议的程序；
微控制器， 具有非易失性存储器， 该微控制器连接该程序下载接口， 并将程序 存储到该非易失性存储器中； 以及
低频电路， 连接该微控制器， 接收一 TPMS学习工具发送的低频无线选择信号， 其中该微控制器根据该选择信号从该多个包含协议的程序中选择一个程序用于运行。
2. 如权利要求 1 所述的 TPMS 传感器， 其特征在于， 该程序下载接口位于该
TPMS传感器的壳体一侧， 该 TPMS传感器具有多个金属端子， 该多个金属端子嵌入 该壳体内， 与该壳体内的电路板连接。
3. 如权利要求 2所述的 TPMS传感器， 其特征在于， 还包括一密封塞， 用于密 封该程序下载接口。
4. 如权利要求 1所述的 TPMS传感器， 其特征在于， 该程序下载接口为双工或 半双工串行通信接口。
5. 一种 TPMS传感器的程序载入和选择方法，该 TPMS传感器具有一程序下载 接口， 该方法包括以下步骤：
将该 TPMS传感器的程序下载接口通过连接线连接到一 TPMS烧写设备； 从该 TPMS烧写设备向该 TPMS传感器中载入多个包含协议的程序；
从一 TPMS学习工具向该 TPMS传感器传输一低频无线选择信号； 以及 在该 TPMS传感器中根据该选择信号从该多个包含协议的程序选择一个程序用 于运行。
6. 如权利要求 5所述的 TPMS传感器的程序载入和选择方法， 其特征在于， 该 程序下载接口采用双工或半双工串行通信方式进行通信。
7. 如权利要求 5所述的 TPMS传感器的程序载入和选择方法， 其特征在于， 该 TPMS烧写设备为台式计算机、 笔记本计算机、 平板电脑或移动电话。
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