TWI239908B - Wireless tire pressure and tire temperature monitoring system - Google Patents

Abstract

A wireless tire pressure and tire temperature monitoring system, including a wireless monitoring and transmitting device mounted on a tire wheel rim, and a digital receiving-display device mounted on the driver's seat on board. The wireless monitoring and transmitting device further includes: a pressure sensor, a temperature sensor, a differential amplifier connected to the pressure sensor, an attenuator connected to the temperature sensor, a microcontroller receiving pressure signals from the differential amplifier and temperature signals from the attenuator, where the signals are transmitted to the digital receiving-display device by a transmitter and a filter through a dielectric resonator antenna so as to allow the driver to comprehend the real-time tire pressure and temperature. Furthermore, an eccentric switch is connected to the microcontroller such that the monitoring system is automatically switched on when the speed is higher than a predetermined range (such as 10-20 km per hour), and switched off when lower than the range for a fixed period of time (such as 5 minutes).

Description

1239908 V. Invention 锊 [Technical Field of the Invention of the Invention] —Special mention '= provides a wireless tire pressure driving device. I can drive people to control the safety of wheels, wrinkles, and passengers in the car. By. [Previous technology] According to the increase of the economic power of the people in general transportation and automobiles, the country is important to the majority of consumer groups who own cars, and it affects driving safety due to the state of God and caution when driving. In addition, whether tires, brakes, etc.) can be used for tires, in addition to whether the tread texture is deep enough to drive safely, where the tire pressure is too high or only 'when the tire pressure is at a standard value, the tire = too high pressure, Although the rolling resistance is small, Gu easily causes the center of the crown to wear, and it is also easy to be damaged when external force is applied, and it is also easy to cause turtle resistance, increase fuel consumption, and increase friction on both sides of the crown to delaminate the tread or ply. When the car is running, the constant friction of the inner curtain of the tire will cause the temperature of the tire to rise. In the previous case, the “18, 6905” patent case was announced, that is, a car that can detect and monitor the tire temperature and the tire pressure and the safety of the car is normal, except that there are still cars that are functioning normally. In addition, there are insufficient tires, which are both excellent tires and ground due to tire surface cracks. The relative increase in tire damage is high. The tire temperature number "tire pressure tire tire pressure measurement system, full tire temperature conditions, comfortable number and Yuean arrived in the driver ’s own department of its functions, pressure and tire temperature will cause wheel energy The surface contact surface can be added when the surface tension is insufficient, and at the same time, it is easy to warn whether the tire indicator is too low, especially to ensure and facilitate the increase. The correct ground is the most precise component (such as among them) The wheel will affect the damage of the tire. The volume is reduced, the size is large, and the rolling is easy to cause the tire temperature surface and the ground to explode.

1239908, description of the invention (2) invention; however, because its detection device is inserted into the air nozzle of the tire on the car, each and the debt measurement structure must include a detection transmitting circuit and a power supply device, the greater the number of tires , Relatively increase the cost a lot, and are vulnerable to damage or theft. Moreover, there is no setting for detecting the tire temperature, and the detection of the tire is obviously insufficient. ^ Here is where the inventors have accumulated years of experience in the industry, actively engaged in research, and finally the invention came into being. [Contents of the present invention] The main object of the present invention is to provide a system that not only has a simple structure and a low cost, but also a detection method that detects the tire pressure of a tire in a controlled tire condition. A wireless tire pressure and temperature monitoring system, and it ’s close to the radio resonance, which makes it easy for the driver

The wireless tire pressure and tire temperature monitoring system according to the present invention further provides a setting for detecting tire temperature to ensure the safety of driving and passengers in the car (-, such wireless tire pressure and tire temperature monitoring system according to the present invention Further, the second step is to install the monitoring system on the spoke surface of the tire steel (aluminum) ring, which can confirm the second step and improve the detection accuracy, which is the second purpose of the present invention. 'The queen section and the present invention are The technical skills used to achieve the above-mentioned objectives and features, their effectiveness, and the preferred embodiments are illustrated in conjunction with the drawings as follows: [U implementation of the invention] ''

The wireless tire pressure and tire temperature monitoring system of the present invention, as shown in FIG. 丨, mainly includes a wireless monitoring transmission mounted on a tire steel ring, which is not available for installation in a driver's seat of a vehicle body. As shown in FIG. 2, the wireless monitoring and transmitting device 1 includes: Month > A pressure sensor is used to sense the internal pressure of the tire.

Page 6 1239908 V. Description of the invention (3) A temperature sensor is used to sense the internal temperature of the tire; a differential amplifier is used to connect the pressure sensor, and the signal obtained from the pressure sensor is amplified and transmitted to Microcontroller; an attenuator used to connect a temperature sensor and process the signal obtained from the temperature sensor to the microcontroller; :: controller 'is used to transmit a pressure signal from a differential amplifier And attenuate the temperature signal for calculation; a voltage regulator connected to the microcontroller; a power switch connected to the microcontroller and power supply (battery); a current source connected to the pressure sensor And power switch; The second switch is connected to the microcontroller and the power supply (battery), and is used to: automatically start the monitor and close the monitoring system at a fixed range (such as 10-20 kilometers per hour); 々5 knife buckle) Time * Cheng: 2 devices are connected to the microcontroller, in order to send 70% of the micro-control operation processing & temperature signal and temperature signal; wave;-transition device, is connected to the transmitter to send The signal filter from the transmitter ^ Γ is connected to the filter to enable the microcontroller to operate.

The force signal and temperature signal are filtered after resonance at the position Z. Device 2. Eight percent are shipped to the digital receiving display. The digital receiving display device 2, such as the third LCD panel 31, 1 ^ π is not set there a key 33, -LCD back: Zea is equipped with a temperature display button 32,-pressure display 4 female First press 34, -set key 35 and warning light ^ to change:

1239908

V. Description of the invention (4) The pressure and temperature signals at the end of the line transmission are displayed on the LCD panel 3 1 by digital display. The present invention is further provided with a shell cover 4, the bottom edge 41 of the shell cover has an arc equivalent to the circumferential surface of the tire steel ring, and _perforations 42, 43 are provided on both sides of the shell cover to provide a steel bar 44 , It is installed on the spoke surface outside the rim 5 (as shown in Figure 5) and close to the valve 51 (as shown in Figure 6). And the upper end surface is provided with a vent hole 45, so as As shown in Figure 5, after tire 52 is installed, the pressure sensor and temperature sensor are used to sense the tire pressure and tire temperature. The action when using the tire is as follows: After the car runs over 10 to 20 kilometers per hour, the wireless tire pressure monitoring The centrifugal switch of the system is activated; '后 After the car runs at a speed of 10 to 20 kilometers per hour, it starts to emit three signals from the standby mode and the interval is about 40 seconds each time; f. One time pressure and temperature; five signals are transmitted every 5 to 10 minutes during the driving of the car, and the real-time pressure and temperature are transmitted to the digital receiving display located in the cab; when the pressure or temperature is abnormal during the driving of the car, Fire ten times at once, each time The interval is about 40 seconds, and the above actions are repeated every five minutes ~ ^ · After waiting for more than 5 minutes, the system will turn off the system with the centrifugal switch, and the system will return to standby mode to save battery and power consumption and prolong battery life. From the above, it can be known that the wireless tire pressure and tire temperature monitoring system of the present invention 'is packaged in a shell and installed on the spoke surface outside the rim. Two J > 5 ^ Safe and fully detect pressure and temperature conditions inside the tire

1239908 V. Description of the invention (5) Not only simple structure and low cost, but also close-range detection method of radio resonance, can provide more accurate values, so that the driver can fully grasp the tire pressure and tire temperature conditions to ensure the driving Safety, it does have an improved effect, but it has not been used in public, and it is in accordance with the provisions of the Patent Law. Those who need to be aware of the above are the preferred and specific embodiments of the present invention. If the changes made according to the concept of the present invention and the functional effects do not exceed the spirit covered by the description and illustrations, It should fall within the scope of the present invention to Chen Ming.

I_P

Page 9 1239908 Brief Description of Drawings Figure 1 is a schematic diagram of the present invention. FIG. 2 is a block diagram of a wireless monitoring and transmitting device according to the present invention. FIG. 3 is a plan view of a digital receiving display device according to the present invention. Fig. 4 is a perspective view of a cover of a wireless monitoring and transmitting device according to the present invention. Fig. 5 is a longitudinal sectional view of a steel ring set according to the present invention. Fig. 6 is a plan view of the invention set on a steel ring. [Comparison of component names and symbols in the figure] 1: wireless monitoring and transmission device 2: digital receiving and displaying device 20 antenna 31 LCD panel 32 temperature display button 33 pressure display button 34 LCD backlight button 35 setting button 36 warning light 4: case cover 41 : Bottom edge 42, 43: Perforation 44: Steel bar 4 5: Ventilation hole 5: Wheel rim

Page 10 1239908 Brief description of the drawings 51: Valve 5 5: Tire II · Page 11

Claims (1)

! 239908 {m Ri Xiu (more) original sun exposure ... J f — — 1 丨 6. Application for patents-one by one ~ 1. A wireless tire pressure and tire temperature monitoring system includes a wireless monitoring and transmitting device and a digital receiving and displaying device; wherein the wireless monitoring and transmitting device is installed inside the tire 9 and consists of a pressure sensor, a temperature sensor, a microcontroller, and a centrifugal device. The switch, transmitter and antenna are composed of 'starting the monitoring system at a certain speed with a centrifugal switch' to sense the tire temperature and tire pressure, then perform arithmetic processing through the microcontroller, and then transmit the signal to the digital receiver via the resonant antenna. The display device consists of its displayer. 2 · The wireless tire pressure and tire temperature monitoring system according to item 1 of the patent application range, wherein the wireless monitoring transmission device is provided with a differential amplifier, which is connected to the pressure sensor to amplify the signal obtained by the pressure sensor. Send to the microcontroller for arithmetic processing. 3. The wireless tire pressure and tire temperature monitoring system according to item 1 of the patent application range, wherein the digital receiving and displaying device is provided with an LCD panel, and one side is provided with a temperature display button and a pressure display button. An LCD backlight button, a setting button and a warning light are displayed on the LCD panel by digital display of the pressure signal and temperature signal transmitted from the antenna, and immediately alert the person when the tire pressure and tire temperature are abnormal. 4 · The wireless tire pressure and tire temperature monitoring system according to item 1 of the scope of the patent application, wherein the wireless monitoring transmission device is covered with a shell cover having a radian equivalent to the circumference of the tire rim on the bottom edge, so that the A perforation is provided on each side of the cover for mounting a steel bar on the spoke surface outside the rim and close to the valve mouth. The upper end surface is provided with a vent hole for the pressure sensor and the temperature sensor for tires. Sensors of tire pressure and temperature. 5 · Wireless tire pressure and tire temperature monitoring system such as the scope of patent application Page 12 Page 13