CN1297417C - Tyre pressure monitoring system of vehicle - Google Patents

Tyre pressure monitoring system of vehicle Download PDF

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CN1297417C
CN1297417C CNB031356508A CN03135650A CN1297417C CN 1297417 C CN1297417 C CN 1297417C CN B031356508 A CNB031356508 A CN B031356508A CN 03135650 A CN03135650 A CN 03135650A CN 1297417 C CN1297417 C CN 1297417C
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tire pressure
tire
circuit
circuit board
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CN1583435A (en
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郑雷
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重庆三信电子有限公司
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Abstract

本发明涉及汽车轮胎压力监测系统,包括轮胎压力接收显示器和轮胎压力传感发射器;轮胎压力接收显示器与轮胎压力传感发射器之间的信号联系为无线传输方式;轮胎压力接收显示器包括设在盒体内的射频接收电路、微控制器电路、显示电路和电源、设在盒体面板上的状态设置键、轮胎压力显示窗、轮胎状态指示灯和蜂鸣器;轮胎压力传感发射器包括设在电路板下面的电池、设在电路板上面的传感器电路、微控制器电路和射频发射电路,其特征在于在电路板之上设有橡皮囊,在橡皮囊与电路板之间形成的封闭的腔体内充填有液体。 The present invention relates to a tire pressure monitoring system comprising tire pressure and tire pressure monitor receiving sensor emitter; tire pressure contact receiving wireless signal transmission between the display and the tire pressure sensor transmitter; receiving a tire pressure monitor is provided comprising a radio frequency receiver circuits within the cassette, microcontroller circuit, display circuit and a power supply board provided in the cartridge decent status set key, a tire pressure display, status indicators and beeper tire; tire pressure sensor comprises a transmitter disposed in the cell below the circuit board, a sensor circuit provided on the circuit board above the microcontroller circuit and RF transmitting circuit, wherein the rubber bag is provided on the circuit board, between the rubber bag is closed and the circuit board is formed the cavity is filled with a liquid. 本发明解决了对中、大型以上的客货车的轮胎的压力进行实时监视技术问题,不仅压力传递误差小、安全可靠,而且安装更换方便。 The invention solves the pressure in the tires of large vans more real-time monitoring of technical problems, not only pressure transmission error is small, safe, reliable, easy to install and replace.

Description

汽车轮胎压力监测系统 Tire Pressure Monitoring System

技术领域 FIELD

本发明涉及汽车安全行驶监测设施,具体涉及有内胎式的汽车轮胎压力监测系统。 The present invention relates to vehicle safety with monitoring facilities, in particular to automobile tire pressure monitoring system tubeless type.

背景技术 Background technique

汽车在行驶过程中轮胎压力不足会导致汽车轮胎磨损严重,油耗增加,难以操纵控制等问题,甚至出现轮胎爆裂,导致车毁人亡的事故发生。 Car in motion the process of low tire pressure can lead to serious car tire wear, increased fuel consumption, difficult to manipulate control and other issues, and even tire burst, causing the car crash accident. 为了加强汽车在行驶过程中的安全性,必须对汽车轮胎的压力进行实时监测,及时提醒驾驶员注意轮胎压力变化情况,采取相应措施。 In order to strengthen the safety of the vehicle during driving, the need for real-time monitoring of the pressure of car tires, in time to alert the driver the tire pressure changes, to take corresponding measures. 原有的汽车轮胎压力监视系统TPMS(Tire Pressre Meare System)都是用于监视无内胎式轮胎的压力变化,而无内胎式轮胎承重力不大,只能用于轿车或轻型车。 Original car tire pressure monitoring system, TPMS (Tire Pressre Meare System) are used for tubeless tire pressure monitoring changes without tube-type tire loading capacity not only for passenger cars or light trucks. 因为,大、中型以上的客货车均安装承重力大的有内胎式轮胎,所以,原有的汽车轮胎压力监视系统TPMS不能对高速行驶的中、大型以上的客货车的轮胎的压力进行实时监视。 Because, large, medium-sized vans are more than install a large loading capacity tubeless tire, so the original car tire pressure monitoring system TPMS can not pressure at high speeds, the tire over a large van for real-time monitoring . 如1999年12月2日发行的《中国电子报》6期,报道了德国奔驰汽车公司推出的“一种汽车轮胎气压监测系统”,该系统是由轮胎压力传感器、高频探测器以及控制装置所组成。 As December 2, 1999 issue of "China Electronics News" 6 reported a German Mercedes-Benz car company launched "an automobile tire pressure monitoring system", the system is composed of tire pressure sensors, high-frequency detector and a control device composed. 当汽车上任何一个轮胎气压低于所规定的标准值时,装在汽车仪表盘上的报警灯就会向驾驶员发出报警信号,监测轮胎气压准确可靠。 When any of a car tire pressure below a standard value specified, mounted on the car dashboard warning light will send an alarm signal to the driver, accurate and reliable monitoring of the tire pressure. 但该系统对温度变化所引起的压力变化没有反应,因此,热空气对轮胎的影响不会引起报警。 But the system does not respond to pressure variations caused by temperature changes, and therefore, the impact of hot air on the tire does not cause an alarm. 为了防止误报,在每个轮胎上都安装了两个压力传感器。 In order to prevent false positives, two on each tire pressure sensors are installed. CN1479678公开的名称为“汽车轮胎充气压力的监控设备和方法”,其监控设备包括:汽车车轮转速或其他表征汽车车轮速度的参数的确定装置、车轮转速或车轮速度参数的差值的计算装置、一个对这些差值与一个额定值误差进行分析并在该额定值误差超过一个阈值时发生一个报警信号的装置。 CN1479678 disclosed entitled "Method and apparatus to monitor tire inflation pressure in automotive", which monitoring device comprising: a vehicle wheel speed or other parameters characterizing the vehicle wheel speed determining means, calculating means or wheel rotational speed difference of the wheel speed parameter, an analysis of these differences with a nominal error means and a warning signal occurs when the error exceeds a nominal threshold value. 此外,该监控设备还包括一个用来直接测量轮胎内的充气压力并把一个表征该充气压力的参数传递到分析装置的装置,当表征该充气压力的参数与一个额定值的误差超过一个相应的阈值时,该分析装置发生一个报警信号。 In addition, the monitoring device further comprises a direct measurement of the inflation pressure for the tire and inflated to a pressure parameter of the characterization apparatus is transmitted to the analyzing means, when the inflation pressure parameter characterizing the error exceeds a nominal value corresponding to a when the threshold value, the occurrence of a warning signal analyzer. CN2092452公告的名称为“汽车轮胎低气压报警器”的专利,该专利的汽车轮胎低压报警器是在汽车轮辋上开一小口,并在其上安装套筒式传感器,而在制动盘上安装联动开关。 CN2092452 bulletin entitled "Tire low pressure alarm" of the patent, the patent automobiles low tire pressure alarm is open on an automobile wheel rim a small hole, and the mounting sleeve sensor thereon, mounted on the brake disk the interlocking switch. 当汽车轮胎气压下降到一定值时,套筒式传感器的维杆便被推出,带动联动开关,接通蜂鸣器的电路,实现及时报警的。 When the tire pressure drops below a certain value, the dimension of the sleeve sensor lever will be pushed to drive the interlocking switch, buzzer circuit connected achieve timely alarm. CN2108338公告的名称为“汽车轮胎气压报装置”的专利,该装置由压力表、气嘴联接器、超声波发射器和接收器等所组成。 Patent CN2108338 bulletin entitled "Tire Pressure packets device", which means by a pressure gauge, gas nozzle coupler, an ultrasonic transmitter and receiver composed. 在压力表内安装压力指针和限定压力调节指针,两指针互相不接触,并分别接导线a或导线b,导线a的另一端联接电源,导线b的另一端联接超声波发射器,超声波发射器接导线c并且联接电源,将压力表、电池(电源)和超声波发射器安装在一个固定盒内,固定盒安装在车轮半轴上,压力表接压力导气管,导气管的另一端安装气嘴联接器并与轮胎气嘴相连。 A pressure gauge installed in the pressure regulator pointer and the pointer is defined, two hands are not in contact with each other, and respectively connected to a wire or wire b, the other end of the wire is coupled to a power source, the other end of the wire b of the coupling ultrasonic transmitter, an ultrasonic transmitter connected and c supply wire coupling, pressure gauge, a battery (power supply) and the ultrasonic transmitter is mounted in a fixed box, fixed to the cartridge mounted on the wheel axle, airway pressure gauge connected, the other end of the gas nozzle mounting airway coupling and is connected to the tire valve stem. 无内胎式轮胎的压力监视系统的轮胎压力传感发射器是置于轮胎空气中,不存在因非传感器芯片带来的压力读取误差;对发射电路的结构要求不高,只要满足在空气中能最佳发射即可。 Tire pressure sensor monitors the pressure transmitter system tubeless tire is placed in a tire air pressure sensor chip caused due to the non-absence of a read error; less demanding on the transmitting circuit configuration, as long as the air best to be able to launch. 虽然有内胎式轮胎压力监视系统的轮胎压力传感发射器也可以置于轮胎内,但对电路的设计要求高,每个轮胎压力传感发射器必须安装在对应的轮胎内,不能互换,所以,安装更换很不方便。 Although the tubeless tire pressure monitoring system, a tire pressure sensor may be placed in the transmitter of the tire, but high requirements for the design of the circuit, each tire pressure sensor transmitter must be installed in the corresponding tire, not interchangeable, Therefore, installation of replacement is very convenient. 也有将轮胎压力传感发射器安装在内胎的气门芯处,虽然安装更换方便,但容易脱落丢失,安全性差。 The tire pressure sensor is also mounted on the valve core at the emitter of the tube, although the installation easy to replace, easy to fall off but lost, poor security.

发明内容 SUMMARY

本发明的目的是提供一种汽车轮胎压力监测系统,它能实时检测和显示有内胎式汽车轮胎的压力,当轮胎过压和欠压时,运用声光方式提醒驾驶员注意轮胎压力情况,防止爆胎情况发生;当轮胎压力正常时,还能提高汽车的运行效率,降低油耗。 Object of the present invention is to provide an automobile tire pressure monitoring system, which can display real-time detection and pressure tube truck tire, when the tire overvoltage and undervoltage, the use of an acousto-optic mode to alert the driver of the tire pressure, to prevent puncture happens; when the tire pressure is normal, but also improve the efficiency of vehicles and reduce fuel consumption.

本发明所述的汽车轮胎压力监测系统,包括安装驾驶室内的轮胎压力接收显示器和安装在汽车轮胎上的一个以上的轮胎压力传感发射器;轮胎压力接收显示器与轮胎压力传感发射器之间的信号联系为无线传输方式;轮胎压力接收显示器每台车只安装一个,其功能是接收轮胎压力传感发射器发射的轮胎压力信号,通过处理后显示轮胎压力数据,并判断轮胎压力是否正常,如欠压或过压,将通过声光方式提醒驾驶员;轮胎压力传感发射器每只轮胎安装一个,其功能是将压力传感器测到的压力数据通过无线电发射方式发射到轮胎压力接收显示器。 Tire pressure monitoring system according to the present invention, includes a cab mounted tire pressure monitor and receiving one or more tire pressure sensor mounted on the vehicle transmitter tire; tire pressure monitor tire pressure sensor receiver between transmitter a wireless signal transmission link; each vehicle tire pressure monitor receiving a mounting only, whose function is to receive a tire pressure sensor transmitter to transmit tire pressure signals, a tire pressure data via the display processing, and determines the tire pressure is normal, the undervoltage or overvoltage, the sound and light alert mode by the driver; each tire pressure sensor tire mounted a transmitter, its function is a pressure sensor measures the pressure data is transmitted to the tire pressure monitor via radio receiving transmitting manner.

轮胎压力接收显示器包括设在盒体内的射频接收电路、微控制器电路、显示电路和电源,设在盒体面板上的状态设置键、轮胎压力显示窗、轮胎状态指示灯和蜂鸣器。 The tire pressure monitor receiver comprises a radio frequency receiver circuit provided in the cartridge body, microcontroller circuit, display circuit and a power supply board provided in the state of the cartridge is provided decent key, the display window of the tire pressure, the tire status indicator and a buzzer. 射频接收电路由射频接收集成块IC1、天线滤波网络C12、C14、L2,低噪声天线射频放大器,接地并联谐振网络L1、C13,旁路电容C3、C1,数据高通滤波截止频率电容C7,锁相环基准频率晶体X1及匹配电容C15,锁相环比较器输出脉冲低通滤波网络R1、C8、C9,低通滤波供电旁路电容C2、数据解调供电旁路电容C4组成,其作用是将由天线来的ASK射频信号经过天线滤波网络到IC1内部的低噪声放大器LNA,经过内部VCO产生的本振频率在内部混频产生一个中频信号,中频信号经过滤波限幅放大解调出数据信号从IC1的数据端DATA输出到微控制器集成块。 The RF receiver circuit IC1 by the radio frequency receiver blocks, an antenna filter network C12, C14, L2, low-noise RF amplifier antenna, the ground parallel resonant networks L1, C13, bypass capacitor C3, C1, data of the high-pass filter cut-off frequency of the capacitor C7, lock The crystal X1 and the loop reference frequency matching capacitor C15, the comparator output pulse PLL low pass filter network R1, C8, C9, low-pass filtering the power supply bypass capacitor C2, a data demodulation supply bypass capacitor C4, whose role is by the ASK radio frequency signal to the antenna through the antenna filter network to the internal low-noise amplifier IC1 the LNA, local oscillator frequency through the internal VCO generated inside the mixer generates an intermediate frequency signal, IF signal filtered limiting amplifier demodulated data signal from IC1 the data output terminal dATA to the microcontroller manifold. 微控制器电路由IC2、晶体X2、晶体匹配电容C16、C17,复位网络R4、C5,设置电路SW1、R3,蜂鸣电路B1、R5组成;其中IC2的作用是对IC1来的数据进行解码识别处理产生压力数据送显示电路,并在压力数据产生不正常时,IC2产生一报警信号送蜂鸣器产生报警声音;晶体X2的作用是产生IC2所需的电容时钟;复位电路的作用是产生上电延时低电平复位信号;设置电路的作用是设置微控制器集成块IC2的不同状态。 A microcontroller circuit IC2, the crystal X2, the crystal matching capacitors C16, C17, reset the network R4, C5, setting circuit SW1, R3, buzzer circuit B1, R5 composition; wherein the action is to IC2 IC1 to decode data identification a pressure transmitting display data processing circuit, and generates the pressure data is not normal, IC2 to generate an alarm signal to send a buzzer generating an alarming sound; X2 effect of crystal is required to produce a clock IC2 capacitance; effect on reset circuit is to generate low power-up reset signal; action setting circuit is provided in different states of the microcontroller IC2 manifold. 显示电路由双位显示数码管N1,小数点字段限流电阻R10,显示选通线控制电路Q1、Q2、Q3,电阻R6、R7、R8,轮胎显示发光二极管D1、D2、D3、D4、D5、D6、D7,显示字段限流电阻R9、R11、R12、R13、R14、R15、R16组成;其中双位显示数码管N1的作用是显示压力数据,Q1、R6是选通控制N1高位数码管,Q2、R7是选通控制N1低位数码管,Q3、R8是选通控制轮胎显示发光二极管。 Display circuit shown by double-digital N1, decimal field current limiting resistor R10, the display gate line control circuit Q1, Q2, Q3, resistors R6, R7, R8, tire display LED D1, D2, D3, D4, D5, D6, D7, the display field current limiting resistors R9, R11, R12, R13, R14, R15, R16; wherein dibit shows the effect of digital N1 is a display pressure data, Q1, R6 is a strobe control N1 high digital, Q2, R7 is a control gate N1 digital low, Q3, R8 is selected from the display LED on the control tires. 电源由ZN1、V2、V4、RZ、R2、C10、C11组成,其中ZN1外接汽车电瓶,将汽车电瓶电压提供给稳压器V2和V4;R2、RZ为保护电阻,、C10、C11为滤波电容。 Powered by ZN1, V2, V4, RZ, R2, C10, C11, where ZN1 external car battery, the vehicle battery voltage to the regulator V2 and V4; R2, RZ is a protection resistor ,, C10, C11 for the filter capacitor .

轮胎压力传感发射器包括设在电路板下面的电池、设在电路板上面的传感器电路、微控制器电路和射频发射器电路,在电路板之上设有橡皮囊,橡皮囊的边缘与电路板边缘紧贴,并卡在封装压接金属框内,在橡皮囊与电路板之间形成的封闭的腔体内充填有液体;以上构件除橡皮囊的上部之外,其余全部用封装材料密封在橡皮外套内。 Tire pressure sensor comprises a transmitter circuit board disposed below the battery, a sensor circuit provided on the circuit board above the microcontroller circuit and a radio frequency transmitter circuit, the circuit board is provided on the rubber bag, the edge of the rubber bag circuit close to the edge of the board, the card package and pressed metal frame, a closed cavity between the rubber bag is filled and the circuit board is formed of a liquid; member other than the above upper portion of the rubber bag, and the rest in the sealing material for sealing rubber inner jacket. 传感器电路由传感器集成块U1和上拉电阻R1组成,其作用是将传感器集成块U1窗口获得的压力物理量经过放大取样处理得到压力数据输出到微控制器;U1定时向微控制器集成块U2发送中断信号、复位信号和输出压力等数据;并接收微控制器集成块U2发来的选通信号、时钟信号、命令信号;上拉电阻R1的作用是在U1为输出数据时保持高电平。 Manifold sensor circuit U1 by the sensor and pull-up resistor R1, whose role is to manifold pressure sensors U1 window physical quantity obtained through the amplification to obtain a pressure-sampling data is output to the microcontroller; regularly sent to the microcontroller U1 U2 manifold an interrupt signal, a reset signal and the output pressure data; manifold microcontroller U2 and receives incoming strobe signal, a clock signal, a command signal; pull-up resistor R1 of the role is to maintain a high level when the output data is U1. 微控制器电路由微控制器集成块U2、晶体X1、晶体匹配电容C2、C3组成;其中微控制器集成块U2工作并接收U1传来的压力数据,经微控制器集成块U2处理后再输出到射频发射器;U2接收U1来的中断信号、复位信号;U2的I/O口产生U1需要的选通线NCS、数据输出线SDO、时钟线CLK、数据输入线SDI;晶体X1的作用是产生微控制器的时钟信号;C2、C3的作用是匹配晶体振荡器,以产生精确的振荡频率。 Manifold microcontroller circuit by the microcontroller U2, the crystal X1, the crystal matching capacitors C2, C3; wherein the microcontroller U2 working Manifold pressure data and receiving transmitted U1, U2 through the manifold microcontroller after treatment is output to the RF transmitter; U2 received U1 by an interrupt signal, the reset signal; U2 of the I / O port to generate the gate line the NCS U1 required, the data output line of the SDO, clock line the CLK, a data input line of the SDI; effect of crystal X1 of is a clock signal generated microcontroller; role C2, C3 are matched crystal oscillator to produce an accurate oscillation frequency. 射频发射电路由发射晶体管Q1、发射天线A1、电容C1、C4、C5、C6、电阻R3晶体X2组成;发射晶体管Q1的作用是产生射频振荡信号并放大发射出去;发射天线A1的作用是有效地发射射频信号,并作为射频振荡电路的电感部分;电容C1和C4为射频振荡电容;C6是输出耦合电容;C5是射频振荡交流旁路电容;电阻R3的作用是提供射频振荡放大偏流;当微控制器U2数据信号是高电平时,射频振荡器放大工作,当是低电平时,射频振荡器不工作,从而产生一个ASK射频信号通过发射天线发射出去。 RF transmitter circuitry from the emitter of the transistor Q1, the transmitting antenna A1, the capacitor C1, C4, C5, C6, resistor R3 crystal X2 composition; emitter of transistor Q1 is the role of generating a radio frequency oscillatory signal and amplifying the emitted; transmitting antenna A1 role is effectively transmitting radio frequency signals, as the inductance of the RF oscillation circuit; capacitors C1 and C4 of the RF oscillator capacitor; C6 are output coupling capacitors; C5 is a radio frequency oscillation AC bypass capacitor; the role of the resistor R3 to provide a radio frequency oscillation amplification bias; when the micro The controller U2 when the data signal is high, a radio frequency oscillator zoom operation, when the low level, the RF oscillator does not work, thereby producing an ASK radio frequency signal radiated through the transmitting antenna.

所述的汽车轮胎压力监测系统,其轮胎压力传感发射器安装在汽车轮胎的内胎和胎垫之间,橡皮囊的上部与内胎紧密接触。 The automobile tire pressure monitoring system, a tire pressure sensor which is installed between the transmitter car tire inner tubes and tire pads, rubber bladder into close contact with the upper portion of the tube. 这样可以方便地获取汽车轮胎内胎上单位面积承受的力F,即压强P。 So you can easily get a car tire inner tubes withstand the force per unit area F, namely pressure P. 橡皮囊获得的压强P通过压力传递介质传递到传感器电路的压力传感芯片,从而使电路板得到压力数据,通过放大采集取样处理后,经射频发射电路的发射天线发射,安装在驾驶室内的轮胎压力接收显示器即可收到轮胎压力传感发射器发出的信号。 The rubber bladder pressure P is obtained by passing the pressure medium is transmitted to the pressure sensing chip sensor circuit, the circuit board so that the pressure data obtained, processed by amplifying the samples collected, transmitted over the radio frequency transmission circuit of transmit antenna, mounted in the cab of the tire receiving a received signal pressure monitor tire pressure sensor can be emitted by the transmitter.

所述的汽车轮胎压力监测系统,在轮胎压力传感发射器的橡皮囊与电路板之间形成的封闭的腔体内充填的液体为硅油或液体油脂。 The automobile tire pressure monitoring system, a closed cavity filled between the tire pressure sensor and transmitter circuit board rubber bag is formed of a liquid silicone oil or liquid fats. 用液体作为压力传递媒介,将压力传递到传感器,效果最好。 Passing liquid as the pressure medium, the pressure is transmitted to the sensor, the best.

本发明解决了原有的汽车轮胎压力监视系统TPMS不能对高速行驶的中、大型以上的客货车的轮胎的压力进行实时监视技术问题,不仅压力传递误差小、安全可靠,而且安装更换方便。 The invention solves the original car tire pressure monitoring system TPMS can not pressure, the tire over a large van traveling at high speed real-time monitoring technical problems, not only pressure transmission error is small, safe, reliable, easy to install and replace.

附图说明 BRIEF DESCRIPTION

图1是本发明的使用状态示意图。 1 is a schematic of the present invention use state.

图2是轮胎压力传感发射器的结构示意图。 FIG 2 is a schematic diagram of the tire pressure sensor transmitter.

图3是轮胎压力接收显示器的电路图。 FIG 3 is a circuit diagram of the tire pressure monitor receiver.

图4是轮胎压力传感发射器的电路图。 FIG 4 is a tire pressure sensor circuit diagram of the transmitter.

具体实施方式 Detailed ways

参见图1和图2,将盒体10内设有射频接收电路11、微控制器电路12、显示电路13和电源14,盒体10面板上设有状态设置键15、轮胎压力显示窗16、轮胎状态指示灯17和蜂鸣器18的轮胎压力接收显示器1安装在汽车驾驶室内,电源14与汽车蓄电池连接;将传感器电路22、微控制器电路23和射频发射电路24安装在电路板20的上面,电池21安装在电路板20的下面,橡皮囊25扣在电路板20的上面,使橡皮囊25的边缘与电路板20的边缘紧贴,并卡在封装压接金属框26内,在橡皮囊25与电路板20之间形成的封闭的腔体内充填硅油27,然后,用封装材料——环氧树脂28将除橡皮囊25的上部之外的其余部件密封在橡皮外套29内,即构成轮胎压力传感发射器2。 Referring to FIGS. 1 and 2, the cartridge body 10 is equipped with a radio frequency receiver circuit 11, the microcontroller circuit 12, a display 13 and a power source circuit 14, provided with status key 15 is provided on the cartridge body panel 10, the tire pressure display window 16, tire tire pressure status indicator buzzer 17 and the display 18 receives a cab mounted in a car, the battery power source 14 is connected to the car; the sensor circuit 22, microcontroller circuit 23 and RF transmit circuitry 24 mounted on the circuit board 20 above, the battery 21 is mounted below the circuit board 20, the rubber bag 25 in the buckle upper circuit board 20, so that rubber bag 25 edges of the circuit board 20 in close contact, and the card package crimping the metal frame 26, in rubber bag closed cavity 20 filled with silicone oil 25 is formed and the circuit board 27, and then, with the encapsulating material - an epoxy resin 28 other than the upper portion of the rubber bag 25, the sealing member remaining in the rubber jacket 29, i.e., emitter constituting the tire pressure sensor 2. 将轮胎压力传感发射器2安装在汽车轮胎的内胎和胎垫之间,每只轮胎安装一个轮胎压力传感发射器2,并使橡皮囊25的上部与内胎紧密接触。 The tire pressure sensor transmitter 2 is mounted between the car tire inner tubes and tire pads, each tire pressure sensor tire mounting a transmitter 2, and the upper portion of the rubber bag 25 in close contact with the tube.

使用时,先打开汽车电源,轮胎压力接收显示器1的蜂鸣器18短鸣一声,表示汽车轮胎压力监测系统开始工作,如果有轮胎压力在给定的压力范围之外,蜂鸣器18在短鸣一声后会连续鸣叫15S,同时表示轮胎位置的轮胎状态指示灯17会闪烁,低于正常压力时闪烁速度较慢,约2S闪烁一次,高于正常压力时闪烁速度较快,约1S闪烁一次,提醒驾驶员注意有轮胎不在正常压力范围之内。 In use, the power to turn the car, tire pressure monitor receiving the buzzer 18 a short beep sound to indicate tire pressure monitoring system to work, if the tire pressure is outside the range of a given pressure, a short buzzer 18 after the series of beeps will sound Ming 15S, while the position of the tire represents a tire condition indicator 17 will blink, blink slow speed lower than the normal pressure, about once 2S flashing, blinking faster when higher than normal pressure, about blink once 1S , alert the driver tire pressure is not within the normal range. 如果有轮胎压力和正常压力相差太大,蜂鸣器18会一直鸣叫,轮胎状态指示灯17会闪烁不停,提醒驾驶员必须给轮胎加气或放气。 If the tire pressure and the normal pressure that much difference, buzzer 18 will always tweet, tire condition indicator 17 will be blinking to alert the driver must be aerated or deflate the tire. 轮胎压力正常时,表示轮胎位置的轮胎状态指示灯17不会闪烁,常亮的轮胎状态指示灯表示LED数码管显示的数字是该位置轮胎的压力数据。 When the tire pressure is normal, the state of the tire represents a tire position indicator 17 is not blinking, lit tire status indicator LED digital display indicates the number is the position of the tire pressure data.

当需要循环显示轮胎压力时,可按轮胎压力接收显示器1的状态设置键15,轮胎状态指示灯17会按左前轮→右前轮→右后轮→左后轮→(右后内轮→左后内轮→)左前轮依次发亮,每按一次,轮胎状态指示灯17点亮的位置变化一次,LED数码管的数值指示轮胎状态指示灯17点亮位置的轮胎压力。 When the tire pressure to the display cycle, according to a tire pressure monitor receiving state setting key 15, the tire status indicator 17 will press the left → right front wheel and right rear wheel → → → left wheel (the right inner ring → the left rear wheel →) sequentially illuminated left front wheel, each press, the tire position change of the status indicator 17 is lit once, LED digital value indicative of the tire pressure status indicator 17 lighting position of the tire. 在循环显示轮胎压力时,如果该位置的轮胎压力不正常,轮胎状态指示灯17会常亮5S,然后闪烁。 When the display cycle tire pressure, if the tire pressure is not the normal position, the tire status indicator 17 will be lit 5S, then blinks.

如果安装在轮胎上的轮胎压力传感发射器2损坏,两小时未收到信号,则对应位置的轮胎状态指示灯17同样会一直闪烁,同时蜂鸣器18会鸣叫15S后停止。 If the tire pressure sensor transmitter 2 mounted on the damaged tire, two hours is not a received signal, corresponding to the state of the tire 17 will also position indicator blinks, the buzzer 18 beeps and the 15S stops. 通过状态设置键15选择到该位置轮胎压力显示时,轮胎压力显示窗16会显示符号“nP”。 Key 15 to select the position of the tire pressure status displayed by setting the tire pressure display 16 displays the symbol "nP".

Claims (3)

1.汽车轮胎压力监测系统,包括安装驾驶室内的轮胎压力接收显示器(1)和安装在汽车轮胎上的一个以上的轮胎压力传感发射器(2);轮胎压力接收显示器(1)与轮胎压力传感发射器(2)之间的信号联系为无线传输方式;轮胎压力接收显示器(1)包括设在盒体(10)内的射频接收电路(11)、微控制器电路(12)、显示电路(13)和电源(14)、设在盒体(10)面板上的状态设置键(15)、轮胎压力显示窗(16)、轮胎状态指示灯(17)和蜂鸣器(18);轮胎压力传感发射器(2)包括设在电路板(20)下面的电池(21)、设在电路板上面的传感器电路(22)、微控制器电路(23)和射频发射电路(24),其特征在于在电路板(20)之上设有橡皮囊(25),橡皮囊(25)的边缘与电路板(20)边缘紧贴,并卡在封装压接金属框(26)内,在橡皮囊(25)与电路板(20)之间形成的封闭的腔体内充填有液体(27);以上构件除橡皮囊(25)的上部之外, 1. The tire pressure monitoring system comprising tire pressure monitor receiver mounted cab (1) and at least one tire pressure sensor mounted on the vehicle transmitter of the tire (2); receiving a tire pressure monitor (1) and the tire pressure Contact between the sensor signal transmitter (2) is a wireless transmission; receiving tire pressure monitor (1) comprises a radio frequency receiver circuit (11) provided in the cartridge body (10), the microcontroller circuit (12), a display circuit (13) and a power supply (14), provided on the cartridge body (10) provided in a state key panel (15), the tire pressure display (16), the tire status indicator (17) and a buzzer (18); tire pressure sensor transmitter (2) comprises a circuit board provided in (20) below the battery (21), disposed above the sensor circuit board (22), a microcontroller circuit (23) and a radio frequency transmission circuit (24) , characterized in that on the circuit board (20) is provided with a rubber bladder (25), a rubber bladder (25) an edge of the circuit board (20) close to the edge, and crimping the card package in a metal frame (26), filled in the closed cavity between rubber bag (25) and the circuit board (20) is formed with a liquid (27); member other than the above upper rubber bag (25), 余全部用封装材料(28)密封在橡皮外套(29)内。 All package material (28) sealed within (29) the rubber jacket.
2.根据权利要求1所述的汽车轮胎压力监测系统,其特征在于轮胎压力传感发射器(2)安装在汽车轮胎的内胎和胎垫之间,橡皮囊(25)的上部与内胎紧密接触。 The tire pressure monitoring system according to claim 1, characterized in that the tire pressure sensor transmitter (2) is mounted between the inner tube and the car tire tread pad, close contact with the rubber balloon (25) and the upper portion of the tube .
3.根据权利要求1所述的汽车轮胎压力监测系统,其特征在于在轮胎压力传感发射器(2)的橡皮囊(25)与电路板(20)之间形成的封闭的腔体内充填的液体(27)为硅油。 The tire pressure monitoring system according to claim 1, characterized in that a closed cavity is formed between the rubber bag (25) and the circuit board (20) in the tire pressure sensor transmitter (2) is filled liquid (27) is a silicone oil.
CNB031356508A 2003-08-20 2003-08-20 Tyre pressure monitoring system of vehicle CN1297417C (en)

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