WO2020098625A1 - 胎压监测系统接收器、胎压监测系统 - Google Patents

胎压监测系统接收器、胎压监测系统 Download PDF

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Publication number
WO2020098625A1
WO2020098625A1 PCT/CN2019/117413 CN2019117413W WO2020098625A1 WO 2020098625 A1 WO2020098625 A1 WO 2020098625A1 CN 2019117413 W CN2019117413 W CN 2019117413W WO 2020098625 A1 WO2020098625 A1 WO 2020098625A1
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Prior art keywords
tire pressure
pressure monitoring
monitoring system
switch
bus
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PCT/CN2019/117413
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English (en)
French (fr)
Inventor
庞海波
张伟
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深圳市道通科技股份有限公司
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Publication of WO2020098625A1 publication Critical patent/WO2020098625A1/zh

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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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  • the present application relates to the technical field of tire pressure monitoring, in particular to a receiver of a tire pressure monitoring system and a tire pressure monitoring system.
  • TPMS ire Pressure Monitoring System
  • TPMS Tire Pressure Monitoring System
  • One of the current tire pressure monitoring systems is to install a sensor directly on the wheel hub inside the tire, monitor the tire pressure monitoring signal through the sensor, and then send the tire pressure monitoring signal to the receiver through wireless transmission.
  • the receiver After receiving the tire pressure monitoring signal, it is sent to the automotive electronic control unit (Electronic Control Unit, ECU) for subsequent processing by the ECU.
  • ECU Electronic Control Unit
  • the inventor found that there are at least the following problems in the related art: for different vehicle models, different types of communication methods may be required between the receiver and the ECU, and different wireless signal frequencies may be used for different vehicle models. Therefore, in order to adapt to different vehicle models, it is necessary to prepare multiple types of tire pressure monitoring system receivers, which causes inconvenience to the production management of the tire pressure monitoring system receivers. When the owner replaces the car, it may be necessary to replace the tire pressure monitoring system, which is not conducive to the best use of materials.
  • the embodiments of the present invention provide a receiver of a tire pressure monitoring system and a tire pressure monitoring system that are convenient for production management and beneficial to the best use of materials.
  • a receiver for a tire pressure monitoring system includes:
  • Antenna used to receive wireless transmission signals
  • An antenna matching circuit electrically connected to the antenna, is used to adjust the receiving frequency of the antenna, so that the receiving frequency matches the wireless transmission signal;
  • a transceiver electrically connected to the antenna matching circuit, for receiving the wireless transmission signal, and demodulating the tire pressure monitoring signal from the wireless transmission signal;
  • a controller electrically connected to the transceiver, for receiving a tire pressure monitoring signal sent by the transceiver;
  • At least two types of bus units which are electrically connected to the controller through switches, wherein each type of bus unit is used to support a bus protocol;
  • the controller is also used to control the switch to turn on one of the at least two types of bus units, and send the tire pressure monitoring signal to the automotive electronic control unit through the bus unit.
  • the number of the switches is the same as the number of the bus units, and each type of the bus unit is connected with a switch;
  • the controller is used to control the turning on of each switch to turn on the bus unit connected to the switch.
  • the switch is used to select one of the at least two types of bus units to connect with the controller according to the control instruction of the controller.
  • the receiver of the tire pressure monitoring system further includes:
  • At least two matched filter circuits are respectively electrically connected between the antenna matching circuit and the transceiver, and the at least two matched filter circuits are used to match the pair of tires Filter the pressure monitoring signal;
  • the switch unit is configured to switch on one matched filter circuit of at least two matched filter circuits according to the control of the controller.
  • the number of the at least two matched filter circuits is the same as the number of communication frequency points supported by the receiver of the tire pressure monitoring system and the sensors of the tire pressure monitoring system.
  • the switch unit includes a first switch and a second switch, the first switch is disposed between the matched filter circuit and the antenna matching circuit, and the second switch is disposed in the matching Between the filter circuit and the transceiver;
  • the control ends of the first switch and the second switch are respectively connected to the controller
  • the controller is also used to control the first switch and the second switch to turn on one of the at least two matched filter circuits to filter the tire pressure monitoring signal through the turned on matched filter circuit.
  • the at least two bus units include a standard CAN bus chip and a fault-tolerant CAN bus chip.
  • an embodiment of the present invention also provides a tire pressure monitoring system, the tire pressure monitoring system includes a sensor disposed on a tire, a transmitter electrically connected to the sensor, and the above tire pressure monitoring system to receive Device
  • the sensor is used to obtain a tire pressure monitoring signal
  • the transmitter is used to modulate the tire pressure monitoring signal into a wireless transmission signal and the wireless transmission signal is sent
  • the tire pressure monitoring system receiver is used to receive the wireless transmission Signal and obtain a tire pressure monitoring signal based on the wireless transmission signal.
  • the receiving frequency of the antenna can be adjusted through an antenna matching circuit, so that the antenna can receive wireless transmission signals of multiple frequencies, and the transceiver will transmit the received wireless transmission
  • the signal demodulation obtains the tire pressure monitoring signal and sends it to the controller. Since the embodiment of the present invention includes at least two types of bus units, the controller may select a suitable bus unit from the at least two types of bus units according to the communication bus protocol to transmit the tire pressure monitoring signal. Therefore, the embodiments of the present invention can adapt to the requirements of a variety of vehicle models, which facilitates production management and is also conducive to making the best use of everything.
  • FIG. 1 is a schematic structural diagram of an embodiment of a receiver of a tire pressure monitoring system of the present invention
  • FIG. 2 is a schematic structural diagram of an embodiment of a receiver of a tire pressure monitoring system of the present invention
  • FIG. 3 is a schematic structural view of an embodiment of a receiver of a tire pressure monitoring system of the present invention.
  • FIG. 4 is a schematic structural diagram of an embodiment of a tire pressure monitoring system of the present invention.
  • FIG. 4 shows a schematic structural diagram of an embodiment of the tire pressure monitoring system 100.
  • the tire pressure monitoring system 100 includes a sensor 30, a transmitter 20, and a tire pressure detection system receiver 10, where the sensor 30 is electrically connected to the transmitter 20.
  • the sensor 30 is used to obtain a tire pressure monitoring signal
  • the transmitter 20 is used to modulate the tire pressure monitoring signal into a wireless transmission signal and transmit the wireless transmission signal.
  • the sensor 30 When the tire pressure monitoring system 100 is used in an automobile, the sensor 30 may be provided on the automobile tire. In actual use, the sensor 30 and the transmitter 20 may be provided separately, or may be integrated in one device and integrally provided on the automobile tire.
  • the receiver 10 of the tire pressure monitoring system is used to receive the wireless transmission signal and obtain a tire pressure monitoring signal based on the wireless transmission signal. Further, the receiver 10 of the tire pressure monitoring system may also send the obtained tire pressure monitoring signal to the automobile electronic control unit, so that the automobile electronic control unit can display the tire pressure monitoring signal and alarm when the tire pressure is abnormal.
  • the tire pressure monitoring system receiver 10 includes at least two types of bus units, an antenna 16, an antenna matching circuit 15, a transceiver 12, and a controller 11.
  • the antenna 16 is electrically connected to the controller 11 through the antenna matching circuit 15 and the transceiver 12 in sequence, and the controller 11 is electrically connected to at least two types of bus units through a switch.
  • the antenna 16 is used to receive the wireless transmission signal sent by the transmitter 20, and the antenna matching circuit 15 is used to adjust the reception frequency of the antenna 16 so that the reception frequency matches the wireless transmission signal.
  • the transceiver 12 is used to receive the wireless transmission signal and demodulate the tire pressure monitoring signal from the wireless transmission signal.
  • the controller 11 is configured to receive the tire pressure monitoring signal sent by the transceiver 12, and control the switch to turn on one type of bus unit among the at least two types of bus units, and to switch the tire pressure monitoring signal through the turned-on bus unit. It is converted into a data format that the bus can transmit, and then the converted tire pressure monitoring signal is sent to the automotive electronic control unit through the bus. Alternatively, the controller 11 converts the tire pressure monitoring signal into a data format that can be transmitted by the bus using the bus unit that has been turned on, and then sends the converted tire pressure monitoring signal to the automotive electronic control unit through the bus.
  • the controller 11 can control the connection mode of the switch and the bus unit through instructions or programs; or, before use, the user can select a type of bus unit according to the vehicle model and other information. And the physical link between the controller and the selected bus unit is formed through the switch, so that the controller can select a bus unit without using instructions every time, and improve the transmission efficiency.
  • each type of bus unit is used to support a bus protocol, such as the standard controller area network (Controller Area Network, CAN) protocol, fault-tolerant CAN protocol, etc.
  • the bus unit is, for example, a standard CAN bus chip or a fault-tolerant CAN bus chip.
  • the bus unit is used for data conversion of the tire pressure monitoring signal according to the bus protocol and into a data format that can be transmitted by the bus.
  • the wireless communication frequency of the automobile is mostly 315MHz or 433.92MHz.
  • the antenna 16 can be a 315 MHz or 433.92 MHz dual-band antenna, and the antenna matching circuit 15 adjusts the reception frequency of the antenna 16 so that the reception frequency of the antenna 16 matches the frequency of the wireless transmission signal.
  • the antenna 16 After receiving the wireless transmission signal, the antenna 16 transmits it to the transceiver 12 through the transmission link, and the transceiver 12 demodulates the wireless transmission signal to obtain the tire pressure monitoring signal.
  • the operating frequency of the transceiver 12 can be set by the controller 11. In this embodiment, through the setting of the controller 11, the transceiver 12 works at 315MHz or 433.92MHz.
  • the transceiver 12 can transmit data to the controller 11 or accept the configuration of the controller 11 through a serial peripheral interface (Serial Peripheral Interface, SPI) or a universal asynchronous transceiver (Universal Asynchronous Receiver / Transmitter, UART) and other communication methods.
  • SPI Serial Peripheral Interface
  • UART Universal Asynchronous Receiver / Transmitter
  • the controller 11 After receiving the data sent by the transceiver 12, the controller 11 selects the appropriate CAN bus chip or fault-tolerant CAN bus chip according to the bus protocol to communicate with the car.
  • the CAN bus chip or fault-tolerant CAN bus chip processes the data and sends it through the CAN bus Give the car electronic control unit.
  • the communication bus type of the electronic control unit (ECU) in the car can also include other bus types in addition to the above standard CAN bus type and fault-tolerant CAN bus type.
  • the tire pressure monitoring system The receiver 10 may also be configured with other types of bus chips, so that the bus chip can process data of other bus types.
  • a switch may be used to control the connection between each bus unit and the controller 11.
  • the first bus unit 13a or the second bus unit 13b is controlled to access the circuit through the third switch 14a in.
  • the control input terminal of the third switch 14a is connected to the controller 11 for receiving the control signal of the controller 11, and each output terminal is respectively connected to the bus unit.
  • the third switch 14a controls the output terminal to be connected to the bus unit according to the received control signal, Connect the corresponding first bus unit 13a or second bus unit 13b to the circuit.
  • each bus unit may also be controlled by a switch, that is, the number of switches is the same as the number of the bus units.
  • the first bus unit 13a and the second bus unit 13b are controlled by the fourth switch 14b and the fifth switch 14c, respectively.
  • the control input terminal of the fourth switch 14b is connected to the controller 11 for receiving the control signal of the controller 11, and the output terminal is connected to the first bus unit 13a.
  • the fourth switch 14b controls the output terminal and the first bus unit 13a according to the received control signal Turn on to connect the first bus unit 13a into the circuit.
  • the control input terminal of the fifth switch 14c is connected to the controller 11 for receiving the control signal of the controller 11, and the output terminal is connected to the second bus unit 13b.
  • the fifth switch 14c controls the output terminal and the second bus unit 13b according to the received control signal Turn on to connect the second bus unit 13b into the circuit.
  • the control of the switch by the controller 11 can be realized by the software program loaded in the controller 11, and the corresponding software can be loaded in the controller 11 according to the bus protocol of the tire pressure monitoring system receiver 10 and the car to When the receiver 10 of the tire pressure monitoring system is working, it can access the corresponding bus unit to process the signal.
  • the setting of the transceiver 11 by the controller 11 can also be realized by the software program loaded in the controller 11, and the corresponding software can be loaded on the controller 11 in advance according to the communication frequency of the receiver 10 and the transmitter 20 of the tire pressure monitoring system. Therefore, when the receiver 10 of the tire pressure monitoring system is operated, the transceiver 12 can be operated at the communication frequency.
  • the tire pressure monitoring system receiver 10 When the tire pressure monitoring system receiver 10 is used for other communication frequencies or the tire pressure monitoring system receiver 10 needs to use other bus protocols to communicate with the car, only the software in the controller 11 needs to be reloaded to realize the tire pressure monitoring system reception
  • the receiver 10 works at a new communication frequency and communicates with the car through other communication protocols, so that the tire pressure monitoring system receiver 10 can be applied to various vehicle models.
  • the bus unit that communicates with the car can also be replaced by other methods.
  • the control controller for example, burning a command into the controller selects a type of bus unit through a switch, and then the tire pressure
  • the monitoring system receiver 10 is replaced with a new vehicle, it is equipped with a vehicle model suitable for the vehicle, and then when the tire pressure monitoring system receiver 10 works, there is no need for the controller to judge the current vehicle model and control the switch to raise the signal Transmission efficiency.
  • the tire pressure monitoring system receiver 10 further includes at least two matched filter circuits and a switching unit.
  • at least two matched filter circuits are electrically connected between the antenna matching circuit 15 and the transceiver 12.
  • the at least two matched filter circuits are used to filter the tire pressure monitoring signal to obtain a signal of a desired frequency.
  • the switch unit is used to connect a matching filter circuit matched with the frequency in the tire pressure monitoring signal to the circuit according to the control of the controller 11 to filter the tire pressure monitoring signal.
  • the controller 11 controls the switch unit to select an appropriate matching filter circuit to filter the tire pressure monitoring signal according to the communication frequency between the tire pressure monitoring system receiver 10 and the tire pressure monitoring system to obtain the desired signal waveform, such as The signal is filtered for a certain frequency point to obtain a waveform signal at that frequency point.
  • the control of the switching unit by the controller 11 is achieved by loading a corresponding software program according to the communication frequency in advance to control the operation of a matching filter circuit.
  • the number of the at least two matched filter circuits may be less than the number of communication frequency points supported by the receiver 10 of the tire pressure monitoring system.
  • a matched filter circuit sometimes needs to filter signals at different communication frequencies.
  • the number of the at least two matched filter circuits is the same as the number of communication frequencies supported by the receiver 10 of the tire pressure monitoring system and the sensor 30 of the tire pressure monitoring system 100.
  • Each matched filter circuit filters the tire tire pressure monitoring signal at a communication frequency point to better match the communication frequency point of the tire tire pressure monitoring signal, and improve the filtering efficiency.
  • the tire pressure monitoring system receiver 10 includes two matched filter circuits, namely a first matched filter circuit 17a and a second matched filter circuit 17b.
  • the operating frequency of the first matched filter circuit 17a may be 315MHz
  • the operating frequency of the second matched filter circuit 17b may be 433.92MHz.
  • the first matching filter circuit 17a is connected to the circuit, and when the communication frequency between the receiver 10 and the transmitter 20 of the tire pressure monitoring system is 433.92MHz , the second matched filter circuit 17b is connected to the circuit.
  • the switch unit includes a first switch 18 disposed between the matched filter circuit and the antenna matching circuit 15 and a second switch 19 disposed between the matched filter circuit and the transceiver 12 .
  • the controller 11 controls the first switch 18 and the second switch 19 to connect the first matched filter circuit 17a or the second matched filter circuit 17b into the circuit.
  • the matched filter circuit is provided in the first switch 18 and the second switch 19, and the effective filter signal can be directly obtained according to the matched filter circuit corresponding to the frequency, thereby improving the matching efficiency and making the signal obtain higher gain.

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  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
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Abstract

一种胎压监测系统接收器(10)，包括：天线(16)，用于接收无线传输信号；天线匹配电路(15)，电性连接天线(16)，用于调整天线(16)的接收频率，以使接收频率匹配无线传输信号；收发器(12)，电性连接天线匹配电路(15)，用于接收无线传输信号，并从无线传输信号中解调出胎压监测信号；控制器(11)，电性连接收发器(12)，用于接收收发器(12)发送的胎压监测信号；至少两类总线单元，分别通过开关电性连接控制器(11)，其中，每类总线单元用于支持一种总线协议；控制器(11)，还用于控制开关接通至少两类总线单元中的一类总线单元，并将胎压监测信号通过总线单元发送给汽车电子控制单元。该胎压监测系统接收器可以适应多种车型的要求，方便了生产管理，也有利于物尽其用。还涉及一种胎压监测系统。

Description

胎压监测系统接收器、胎压监测系统
本申请要求于2018年11月12日提交中国专利局、申请号为201811339197.6、申请名称为“一种胎压监测系统接收器、胎压监测系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及胎压监测技术领域，尤其涉及一种胎压监测系统接收器、胎压监测系统。
背景技术
随着汽车技术的发展，以及对于汽车安全驾驶要求的提高，胎压监测系统(Tire Pressure Monitoring System，TPMS)在汽车中得到了越来越广泛的应用。目前的胎压监测系统中，有一种是通过直接在轮胎内部的轮毂上安装传感器，通过传感器监测胎压监测信号，然后再通过无线传输方式将所述胎压监测信号发送给接收器，接收器接收到该胎压监测信号后再发送给汽车电子控制单元(Electronic Control Unit，ECU)，由ECU进行后续处理。
实现本发明过程中，发明人发现相关技术中至少存在如下问题：针对不同的车型，接收器与ECU之间可能需要采用不同类型的通信方式，不同车型可能采用的无线信号频率也不一样。因此，为了适应不同的车型可能要准备多种类型的胎压监测系统接收器，这对胎压监测系统接收器的生产管理造成不便。车主更换汽车时，有可能需要重新更换胎压监测系统，不利于物尽其用。
发明内容
为了解决上述技术问题，本发明实施例提供了一种方便生产管理、利于物尽其用的胎压监测系统接收器和胎压监测系统。
本发明实施例解决其技术问题采用以下技术方案：一种胎压监测系统接收器包括：
天线，用于接收无线传输信号；
天线匹配电路，电性连接所述天线，用于调整所述天线的接收频率，以使所述接收频率匹配所述无线传输信号；
收发器，电性连接所述天线匹配电路，用于接收所述无线传输信号，并从所述无线传输信号中解调出胎压监测信号；
控制器，电性连接所述收发器，用于接收所述收发器发送的胎压监测信号；
至少两类总线单元，分别通过开关电性连接所述控制器，其中，每类总线单元用于支持一种总线协议；
所述控制器，还用于控制所述开关接通所述至少两类总线单元中的一类总线单元，并将所述胎压监测信号通过所述总线单元发送给汽车电子控制单元。
在一些实施例中，所述开关的数量与所述总线单元的数量相同，每类所述总线单元连接一个开关；
所述控制器用于控制每个开关的接通，以接通与所述开关连接的总线单元。
在一些实施例中，所述开关用于根据所述控制器的控制指令，选取所述至少两类总线单元中的一类总线单元与所述控制器接通。
在一些实施例中，所述胎压监测系统接收器还包括：
至少两个匹配滤波电路，所述至少两个匹配滤波电路分别电性连接于所述天线匹配电路和所述收发器之间，所述至少两个匹配滤波电路用于匹配所述对所述胎压监测信号进行滤波；
开关单元，用于根据所述控制器控制，接通至少两个匹配滤波电路中的一个匹配滤波电路。
在一些实施例中，所述至少两个匹配滤波电路的数量与所述胎压监测系统接收器支持的与胎压监测系统的传感器之间的通信频点的数量相同。
在一些实施例中，所述开关单元包括第一开关和第二开关，所述第一开关设置于所述匹配滤波电路与所述天线匹配电路之间，所述第二开关设置于所述匹配滤波电路与所述收发器之间；
所述第一开关和第二开关的控制端分别连接所述控制器；
所述控制器还用于控制所述第一开关和第二开关，接通所述至少两个匹配滤波电路中的一个，以通过接通的匹配滤波电路对所述胎压监测信号进行滤波。
在一些实施例中，所述至少两个总线单元包括标准CAN总线芯片和容错CAN总线芯片。
另一方面，本发明实施例还提供了一种胎压监测系统，所述胎压监测系统包括设置于轮胎的传感器，与所述传感器电性连接的发送器，以及上述的胎压监测系统接收器；
所述传感器用于获得胎压监测信号，所述发送器用于将所述胎压监测信号调制成无线传输信号并发送所述无线传输信号，所述胎压监测系统接收器用于接收所述无线传输信号，并基于所述无线传输信号获得胎压监测信号。
本发明实施例的胎压监测系统接收器、胎压监测系统，可以通过天线匹配电路调整天线的接收频率，以使所述天线能接收多种频率的无线传输信号，收发器将接收的无线传输信号解调获得胎压监测信号，并发送给控制器。由于本发明实施例包括至少两类总线单元，控制器可以根据通信的总线协议从至少两类总线单元中选择合适的总线单元，将所述胎压监测信号传输出去。因此，本发明实施例可以适应多种车型的要求，方便了生产管理，也有利于物尽其用。
附图说明
一个或多个实施例通过与之对应的附图进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1为本发明胎压监测系统接收器的一个实施例的结构示意图；
图2为本发明胎压监测系统接收器的一个实施例的结构示意图；
图3为本发明胎压监测系统接收器的一个实施例的结构示意图；
图4为本发明胎压监测系统的一个实施例的结构示意图。
具体实施方式
为了便于理解本发明，下面结合附图和具体实施例，对本发明进行更详细的说明。需要说明的是，当元件被表述“固定于”另一个元件，它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个元件，它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。本说明书所使用的术语“垂直的”、“水平的”、“左”、“右”、“内”、“外”以及类似的表述只是为了说明的目的。
除非另有定义，本说明书所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是用于限制本发明。本说明书所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
此外，下面所描述的本发明不同实施例中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
本发明的胎压监测系统接收器10可以应用于胎压监测系统100，图4示出了胎压监测系统100的一个实施例的结构示意图。如图4所示，胎压监测系统100包括传感器30、发送器20和胎压检测系统接收器10，其中，传感器30电性连接发送器20。传感器30用于获得胎压监测信号，发送器20用于将所述胎压监测信号调制成无线传输信号并发送所述无线传输信号。
当胎压监测系统100用于汽车时，传感器30可以设置在汽车轮胎上，在实际使用时，传感器30和发送器20可以单独设置，也可以集成在一个装置中整体设置于汽车轮胎上。胎压监测系统接收器10用于接收所述无线传输信号，并基于所述无线传输信号获得胎压监测信号。进一步的，胎压监测系统接收器10还可以将获得的胎压监测信号发送给汽车电子控制单元，以使汽车电子控制单元能显示所述胎压监测信号，并在胎压异常时进行报警。
具体的，请参照图1，胎压监测系统接收器10包括至少两类总线单元、天线16、天线匹配电路15、收发器12和控制器11。其中，天线16依次通过天线匹配电路15、收发器12电性连接控制器11，控制器11通过开关电性连接至少两类总线单元。天线16用于接收发送器20发送的无线传输信号，天线 匹配电路15，用于调整天线16的接收频率，以使所述接收频率匹配所述无线传输信号。收发器12用于接收所述无线传输信号，并从所述无线传输信号中解调出胎压监测信号。控制器11用于接收收发器12发送的胎压监测信号，并控制所述开关接通所述至少两类总线单元中的一类总线单元，通过接通的总线单元将所述胎压监测信号转换成总线能够传输的数据格式，然后通过总线将转换后的胎压监测信号发送给汽车电子控制单元。或者，控制器11利用已接通的总线单元，将所述胎压监测信号转换成总线能够传输的数据格式，然后通过总线将转换后的胎压监测信号发送给汽车电子控制单元。也就是说，在传感器30处于使用的状态下，控制器11可以通过指令或程序等方式控制开关与总线单元的接通方式；或者，在使用前，根据车型等信息用户自行选取一类总线单元，并通过开关形成控制器与选取的该类总线单元之间的物理链路，进而使控制器可以无需每次利用指令选取一类总线单元，提升传输效率。
其中，每类总线单元用于支持一种总线协议，例如标准控制器局域网络(Controller Area Network,CAN)协议、容错CAN协议等。总线单元例如标准CAN总线芯片、容错CAN总线芯片等。总线单元用于根据总线协议对胎压监测信号进行数据转换，转换成总线能够传输的数据格式。
以胎压监测系统100用于汽车为例，由于汽车的无线通信频率多为315MHz或433.92MHz。为了适应这两个工作频率，天线16可以为315MHz或433.92MHz双频天线，通过天线匹配电路15调整天线16的接收频率，使天线16的接收频率与无线传输信号的频率相匹配。
天线16接收到无线传输信号后，通过传输链路输送至收发器12，收发器12对无线传输信号进行解调获得胎压监测信号。收发器12的工作频率可以由控制器11进行设置，在本实施例中，通过控制器11的设置，收发器12工作于315MHz或433.92MHz。收发器12可以通过串行外设接口(Serial Peripheral Interface，SPI)或通用异步收发传输器(Universal Asynchronous Receiver/Transmitter，UART)等通信方式对控制器11传输数据或接受控制器11的配置。控制器11接收到收发器12发送的数据后，根据与汽车通信的总线协议选择合适的CAN总线芯片或容错CAN总线芯片，CAN总线芯片或容错CAN总线芯片对数据进行处理后，通过CAN总线发送给汽车电子控制单元。
需要说明的是，汽车中的电子控制单元(ECU)的通信总线类型还可以包括除上述标准CAN总线类型和容错CAN总线类型外的其他总线类型，为了适应汽车其他的总线类型，胎压监测系统接收器10还可以配置其他种类的总线芯片，以使总线芯片能处理其他总线类型的数据。
其中，在一些实施例中，可以采用一个开关控制各总线单元与控制器11的接通，如图1所示，通过第三开关14a控制第一总线单元13a或第二总线单元13b接入电路中。第三开关14a的控制输入端连接控制器11、用于接收控制器11的控制信号，各输出端分别连接总线单元，第三开关14a根据接收的控制信号控制输出端与总线单元接通，以将对应的第一总线单元13a或第二总 线单元13b接入电路中。
在其他一些实施例中，也可以各个总线单元分别用一个开关控制，即开关的数量与所述总线单元的数量相同。如图2所述，第一总线单元13a和第二总线单元13b分别用第四开关14b和第五开关14c进行控制。第四开关14b的控制输入端连接控制器11、用于接收控制器11的控制信号，输出端连接第一总线单元13a，第四开关14b根据接收的控制信号控制输出端与第一总线单元13a接通，以将第一总线单元13a接入电路中。第五开关14c的控制输入端连接控制器11、用于接收控制器11的控制信号，输出端连接第二总线单元13b，第五开关14c根据接收的控制信号控制输出端与第二总线单元13b接通，以将第二总线单元13b接入电路中。
其中，控制器11对开关的控制可以通过控制器11中装载的软件程序来实现，可以根据胎压监测系统接收器10与汽车通信的总线协议事先在控制器11中装载相应的软件，以在胎压监测系统接收器10工作时，能接入对应的总线单元对信号进行处理。控制器11对收发器12的设置也可以通过控制器11中装载的软件程序来实现，可以根据胎压监测系统接收器10与发送器20的通信频率事先在控制器11上装载相应的软件，以在胎压监测系统接收器10工作时，能使收发器12工作于所述通信频率。
当胎压监测系统接收器10用于其他通信频率或胎压监测系统接收器10需采用其他总线协议与汽车通信时，只需重新装载控制器11中的软件就可以实现使胎压监测系统接收器10工作于新的通信频率，并通过其他通信协议与汽车进行通信，从而使胎压监测系统接收器10能适用于各种车型。在另一些实施例中，也可以通过其他方法更换与汽车通信的总线单元，例如在更换车型前控制控制器(例如向控制器烧入一条指令)通过开关选择一类总线单元，进而该胎压监测系统接收器10在更换至新的车辆上时，即配适于该车辆的车型，进而在胎压监测系统接收器10工作时无需控制器判断当前车辆的车型并对开关进行控制，提升信号传输效率。
在另一些实施例中，为了获得更理想的胎压监测信号，胎压监测系统接收器10还包括至少两个匹配滤波电路和开关单元。请参照图3，至少两个匹配滤波电路电性连接于天线匹配电路15和收发器12之间。所述至少两个匹配滤波电路用于对所述胎压监测信号进行滤波，以获得预期频率的信号。所述开关单元用于根据控制器11的控制，将与所述胎压监测信号中的频点匹配的匹配滤波电路接入电路中，以对所述胎压监测信号进行滤波。控制器11对开关单元进行控制，以根据胎压监测系统接收器10与胎压监测系统之间的通信频率，选择合适的匹配滤波电路对胎压监测信号进行滤波，以得到期望信号波形，如针对某一频点对该信号进行滤波，得到该频点的波形信号。同样的，控制器11对开关单元的控制通过预先根据通信频率装载对应的软件程序来实现控制某一匹配滤波电路工作。
其中，在一些实施例中，通过选用带宽较宽的匹配滤波电路，所述至少两 个匹配滤波电路的数量可以少于所述胎压监测系统接收器10支持的通信频点的数量，在这种情况下，一个匹配滤波电路有时需要对不同通信频点的信号进行滤波。
在另一些实施例中，所述至少两个匹配滤波电路的数量与胎压监测系统接收器10支持的、与胎压监测系统100的传感器30之间的通信频点的数量相同。每个匹配滤波电路对一种通信频点的轮胎胎压监测信号进行滤波，以更好的匹配轮胎胎压监测信号的通信频点，提高滤波效率。仍以轮胎胎压监测系统100用于汽车为例，如图3所示，胎压监测系统接收器10包括两个匹配滤波电路分别为第一匹配滤波电路17a和第二匹配滤波电路17b。第一匹配滤波电路17a的工作频率可以为315MHz，第二匹配滤波电路17b的工作频率可以为433.92MHz。当胎压监测系统接收器10与发送器20的通信频率为315MHz时，将第一匹配滤波电路17a接入电路中，当胎压监测系统接收器10与发送器20的通信频率为433.92MHz时，将第二匹配滤波电路17b接入电路中。
在其中一些实施例中，如图3所示，开关单元包括设置于匹配滤波电路与天线匹配电路15之间的第一开关18和设置于匹配滤波电路与收发器12之间的第二开关19。控制器11对第一开关18和第二开关19进行控制，以将第一匹配滤波电路17a或第二匹配滤波电路17b接入电路中。将匹配滤波电路设置于第一开关18和第二开关19内，可以根据频率对应的匹配滤波电路直接获取有效信号，进而可以提升匹配效率，使信号获得更高的增益。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其
限制；在本发明的思路下，以上实施例或者不同实施例中的技术特征之间也可以进行组合，步骤可以以任意顺序实现，并存在如上所述的本发明的不同方面的许多其它变化，为了简明，它们没有在细节中提供；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (8)

  1. 一种胎压监测系统接收器(10)，其特征在于，包括：
    天线(16)，用于接收无线传输信号；
    天线匹配电路(15)，电性连接所述天线(16)，用于调整所述天线(16)的接收频率，以使所述接收频率匹配所述无线传输信号；
    收发器(12)，电性连接所述天线匹配电路(15)，用于接收所述无线传输信号，并从所述无线传输信号中解调出胎压监测信号；
    控制器(11)，电性连接所述收发器(12)，用于接收所述收发器(12)发送的胎压监测信号；
    至少两类总线单元，分别通过开关电性连接所述控制器(11)，其中，每类总线单元用于支持一种总线协议；
    所述控制器(11)，还用于控制所述开关接通所述至少两类总线单元中的一类总线单元，并将所述胎压监测信号通过所述总线单元发送给汽车电子控制单元。
  2. 根据权利要求1所述的胎压监测系统接收器(10)，其特征在于，所述开关的数量与所述总线单元的数量相同，每类所述总线单元连接一个开关；
    所述控制器(11)用于控制每个开关的接通，以接通与所述开关连接的总线单元。
  3. 根据权利要求1所述的胎压监测系统接收器(10)，其特征在于，所述开关用于根据所述控制器(11)的控制指令，选取所述至少两类总线单元中的一类总线单元与所述控制器(11)接通。
  4. 根据权利要求1-3任一项所述的胎压监测系统接收器(10)，其特征在于，所述胎压监测系统接收器(10)还包括：
    至少两个匹配滤波电路，所述至少两个匹配滤波电路分别电性连接于所述天线匹配电路(15)和所述收发器(12)之间，所述至少两个匹配滤波电路用于匹配所述胎压监测信号中的频点并对所述胎压监测信号进行滤波；
    开关单元，用于根据所述控制器(11)的控制，接通所述至少两个匹配滤波电路中的一个匹配滤波电路。
  5. 根据权利要求4所述的胎压监测系统接收器(10)，其特征在于，所述至少两个匹配滤波电路的数量与所述胎压监测系统接收器(10)支持的、与胎压监测系统的传感器之间的通信频点的数量相同。
  6. 根据权利要求4或5所述的胎压监测系统接收器(10)，其特征在于， 所述开关单元包括第一开关(18)和第二开关(19)，所述第一开关(18)设置于所述匹配滤波电路与所述天线匹配电路(15)之间，所述第二开关(19)设置于所述匹配滤波电路与所述收发器(12)之间；
    所述第一开关(18)和第二开关(19)的控制端分别连接所述控制器(11)；
    所述控制器(11)还用于控制所述第一开关(18)和第二开关(19)，接通所述至少两个匹配滤波电路中的一个，以通过接通的匹配滤波电路对所述胎压监测信号进行滤波。
  7. 根据权利要求1-6任一项所述的胎压监测系统接收器(10)，其特征在于，所述至少两个总线单元包括标准CAN总线芯片和容错CAN总线芯片。
  8. 一种胎压监测系统(100)，其特征在于，所述胎压监测系统(100)包括设置于轮胎的传感器(30)，与所述传感器(30)电性连接的发送器(20)，以及权利要求1-7任意一项所述的胎压监测系统接收器(10)；
    所述传感器(30)用于获得胎压监测信号，所述发送器(20)用于将所述胎压监测信号调制成无线传输信号并发送所述无线传输信号，所述胎压监测系统接收器(10)用于接收所述无线传输信号，并基于所述无线传输信号获得胎压监测信号。
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