TWI233894B - Tire pressure detecting system and its detecting method using ultra-wideband technology - Google Patents

Abstract

The present invention relates to a tire pressure detecting system and its detecting method using ultra-wideband technology which uses ultra-wideband (UWB) wireless transmission to transmit data in local environment of a vehicle, comprising at least one data access terminal disposed on at least one tire air-cap and a main controlling terminal. Users can operate the main controlling terminal to retrieve the value of the tire pressure from the access terminal by the ultra-wideband (UWB) wireless transmission.

Description

1233894

V. Description of the invention (1) [Technical field to which the invention belongs] A tire pressure detection system using ultra-frequency-seeking technology and its detection method, especially a tire pressure using ultra-wideband (UWB) wireless transmission technology as data transmission Detection system and detection method. Stomach / '[Previous technology] Wheeled vehicles are often (accounting for 6% of highway accidents) tire pressure problems. Tires or weather changes, and these will affect the tires when driving. At that time, driving negligence was also caused by the failure to check the tire pressure condition properly, and to think about accidents. Furthermore, to maintain the correct consumption. Therefore, wheeled vehicles are extremely important. There may be accidents of flat tires. Occurred), and most of the causes of flat tires are long-term exposure to environmental external forces during driving, which causes wear and deformation of the tire itself, pressure, and driving safety. In addition, the pressure inside the tire changes. Due to tire maintenance or punctual use of tire pressure gauges, tire bursts often occur when the vehicle is running. Regular tire tire pressure can also save fuel. Tire pressure detection is safe for vehicle driving.

Ultra-wideband (U 1 is a short-range wireless technology. Compared with other short 0 2 · 1 1 b, the transmission speed is up to 0 Mbps β ′. It also has congruent characteristics. Tra wide communication, for the US military Distance from wireless communication standard, / 1 ο ο 〇, the first 100MB, the second is not easy to produce interference precision band; UWB) a communication technology developed by ultra-wideband UWB is only about 8th generation ultra-wideband (UWB) generation is expected to reach 4 positioning per second Extremely high data transmission security

Ultra-wideband (UWB) is what we used to call invisible waves. ''

Page 5 1233894 ⑵ 5. Description of the invention 疋 The technology developed by the US military was to avoid being intercepted by advanced eavesdropping technology. Most radio transmissions operate on narrow bands. For example, the broadcast used by mobile phones is approximately; [〇 〇 Μ Η z. However, the pulses of the ultra-wideband (U W B) are as wide as tens of thousands of M η ζ, and even the occupied bandwidth will be penetrated. However, its inventor claims that its actual power consumption is very low, so it does not cause any disturbance. The inventor of this case uses the ultra-wideband (U w B) wireless transmission data technology to wirelessly detect the tire pressure status of wheeled vehicles, replacing the traditional tire pressure gauge to check the tire pressure, so that we can You can grasp the situation of tire pressure at any time, and then implement vehicle maintenance to prevent various accidents caused by tire pressure problems during vehicle breaks. [Summary of the Invention] In view of this, a system and a detection method of the present invention, Its main purpose is to use ultra-wideband technology to carry out tire pressure information. 〆 ° The tire pressure detection system using ultra-wideband technology is a wireless transmission of the 'Lee' in a local hometown of a vehicle to detect the vehicle. The present invention uses $, 丨, ^ ^ on the tire valve to obtain two — The cargo pick-up terminals are set at the remote control of the vehicle-the main control terminal ^ tire pressure signal. Furthermore, the user can use the data acquisition terminal to call the ultra-wideband technology to send an inquiry signal to the tire pressure signals. , Volume = sleeping, some data acquisition end to capture the main control end of the inverse two f data transmission = end to receive remote signals through ultra-wideband technology. Tire pressure signal ;: Interrogation signal from the coming, and the tire pressure is retrieved.

Page 6 1233894 V. Description of the invention (3) Similarly, a reply signal is transmitted to the main control end at the far end through the ultra-wideband technology. After receiving the response signal, the main control terminal performs calculation processing and displays a tire pressure signal obtained from the data acquisition terminal through a display unit, so that the user can clearly know the tire pressure situation of the vehicle. [Embodiment] Please refer to the first figure, which is a schematic diagram of the operating environment of the system of the present invention. The tire pressure detection system using ultra wideband (U W B) technology is used in a local environment of a vehicle and includes: at least one data acquisition terminal 1 and a main control terminal 2. The present invention uses these data acquisition terminals 1 to be arranged on the vehicle tire nozzle 5 of the wheel κ-type vehicle 3, and is used to capture a signal fk of a tire pressure inside the vehicle tire and perform a signal conversion operation. Moreover, as shown in the first figure, the user 4 can obtain the tire pressure value signal through wireless data transmission by using the ultra wideband (U k WB) wireless technology by operating the main controller 2 and display the tire pressure. The value signal allows the user 4 to know clearly the tire pressure of the vehicle tire. << Please refer to the second figure, which is a schematic diagram of the data acquisition terminal circuit block of the system of the present invention. The data acquisition terminal 1 of the present invention includes: a pressure information acquisition unit 10, an analog / digital conversion unit 1 2, a data processing unit 14, a first ultra-wideband communication module 16 and a first day Line 1 8. With reference to the first picture, please refer to the second picture again. The data acquisition terminal 1 is connected to the tire valve 5 of the vehicle using the pressure information acquisition unit 10 to obtain a tire pressure signal. The tire pressure signal is Is an analog signal. The analog / digital conversion unit 12 is connected to the pressure information acquisition unit 10 and connected.

Page 7 1233894 V. Description of the invention (4) Take the analog tire pressure value signal and convert it into a digital tire pressure value signal output. The data processing unit 14 is connected to the analog / digital conversion unit 12 and receives the digital tire pressure value signal and processes it. The first ultra-wideband communication module 16 is connected to the data processing unit 14 and receives the digital tire pressure value signal processed by the data processing unit 14 and transmits it to the remote via the first antenna wirelessly. One of the main control terminals 2. In the above description, the digital tire pressure value signal is a reply signal. Please refer to the third figure, which is a schematic block diagram of the main control terminal circuit of the system of the present invention. The main control terminal 2 of the present invention includes a second antenna 2 ^ 〇, a second ultra-wideband communication module 2 2, a micro control unit 2 4, a ψ ^ display unit 2 6 and a memory. Unit 27 and an operating unit 28. Please cooperate with the first figure and refer to the third figure again. The user 4 performs the tire pressure detection control operation through the operation unit 28 of the main control i terminal 2. It sends a control signal to the micro control unit connected to the operation unit 28. twenty four. The micro-control unit 24 receives the control signal and performs a processing operation thereon. After the micro-control unit 24 processes the control signal, it is transmitted to the second ultra-wideband communication module 22 connected to the micro-control unit 24. The second ultra-wideband communication module 22 transmits the control signal wirelessly through a second antenna 20 connected to the second ultra-wideband communication module 22 to a remote data acquisition terminal 1 . In the above description, the control signal is an _ inquiry signal. Referring again to the third figure, the memory unit 27 is connected to the micro-control unit 24 and is used to store digital data, that is, a serial number and data of the data acquisition terminal 1. And, the display unit 26 is connected to the micro-control unit 24, for

Page 8 1233894 V. Description of the invention (5) As a display and display interface of the tire pressure signal. Please refer to the second and third figures and refer to the first figure. When the user 4 has not performed the tire pressure detection operation, the data acquisition terminal 1 set on the tire valve 5 of the vehicle will enter a sleep state, that is A power saving mode. At this time, the data processing unit 14 of the data acquisition terminal 1 will stop working. Therefore, the first ultra-wideband communication module 16 has no response signal output. As described above, when the user 4 performs tire pressure detection, the user 4 can transmit the control signal to the micro control unit 2 4 and the micro control unit 2 4 through the operation unit 28 of the main control terminal 2. After processing the control signal, it is transmitted to the second ultra-wideband communication module 22. The second ultra-wideband communication module 22 uses UWB technology to transmit the control signal through the second antenna 20 to the remote data acquisition terminal 1. The control signal is an inquiry signal, and the inquiry signal sequentially activates the data acquisition terminals 1 during sleep, so that the data acquisition terminals 1 perform tire pressure signal acquisition. The data acquisition terminal 1 is the tire pressure value signal that will be obtained. After conversion and calculation processing, the ultra-wideband (UWB) technology of the first ultra-wideband communication module 16 is used to wirelessly transmit through the first antenna 18. Send a reply signal to the main console 2. The main control end 2 receives the reply signal wirelessly using ultra-wideband (UWB) technology. The reply signal is displayed by the micro control unit 2 4 _ and displayed through the display unit 26, so that the user can clearly know the tire pressure of the vehicle tire. value. In addition, the data acquisition terminal 1 can preset a signal lower limit value and a signal upper limit value, and in the sleep state, the pressure information extraction list of the data acquisition terminal 1

Page 9 1233894 V. Description of the invention (6) When the tire pressure value signal obtained by RMB 10 is higher than the upper limit value of the signal, or lower than the lower limit value of the signal, the obtained tire pressure value signal will pass through the data. After processing by the processing unit 14, after processing, the data acquisition terminal 1 will actively output a warning signal and wirelessly transmit it to the remote control terminal 2 to warn the user 4 〇 Next, the invention will be described using the The tire pressure detection method of the broadband technology 'Please refer to the fourth figure, which is a flowchart of the steps of the detection method of the present invention. The steps are explained as follows: First, perform at least one tire inflation action of the wheeled vehicle (S 1 0 0). Then, use a tire pressure gauge to measure a tire pressure value signal of each of the tires (S 1 0 2). Then, install at least one data acquisition terminal on the air nozzles of the tires (S 104). Next, operate a main control terminal to set a serial number of the data acquisition terminals, and At the same time, the tire pressure value signals are set to a tire pressure setting value (S 1 0 6); further, the serial number and the tire pressure setting value are stored in a memory unit (S 1 0 8); when detecting the tire pressure, The main control terminal is used to send an inquiry signal to the data acquisition terminals (S 1 1 0); then, the main control terminal sequentially receives the tire pressure value signals (S 1 from the data acquisition terminal). 1 2); The main control terminal processes and calculates the tire pressure value signals and becomes the tire pressure setting value (S 1 1 4). Finally, the tire pressure setting values are displayed on a display unit (S 1 1 6). In the above, before sending an inquiry signal to the data acquisition terminals (S 1 10), the data acquisition terminals enter a sleep state, which is a power saving mode. And after sending a query signal to the data acquisition terminals (S 1 10), a data acquisition in sleep mode is started.

Page 10 1233894 V. Description of the invention (7) terminal, which enables the data acquisition terminal to perform tire pressure signal acquisition. As mentioned above, the tire pressure detection system and detection method using the ultra-wideband technology of the present invention are in a local environment of a vehicle, and use ultra-wideband (UWB) wireless transmission data technology to wirelessly detect wheeled vehicles. The tire pressure condition is used to replace the traditional tire pressure gauge to check the tire pressure, so that we can grasp the tire pressure situation at any time, and then implement vehicle maintenance to prevent the vehicle from driving due to tire pressure problems- Various accidents. However, the drawings and descriptions disclosed above are only examples of the present invention. Those skilled in the art can make other improvements based on the above description, and these changes still belong to the spirit of the invention of the present invention. And the scope of patents defined below. *

Page 1233894 Brief description of the diagram: The first diagram is a schematic diagram of the operating environment of the system of the present invention; the second diagram is a circuit block diagram of the data acquisition side of the system of the present invention; the third diagram is the main control side of the system of the present invention A schematic block diagram of the circuit; and the fourth figure is a flowchart of the steps of the detection method of the present invention. Explanation of drawing numbers: 1 data acquisition terminal 1 0 pressure information acquisition unit 1 2 analog / digital conversion unit 1 4 data processing unit 1 6 first ultra-wideband communication module 1 8 first antenna 2 main control terminal 2 0th Two antennas 2 2 Second ultra-wideband communication module 2 4 Micro control unit 2 6 Display unit 2 7 Memory unit 2 8 Operating unit 3 Wheeled vehicle 4 User 5 Vehicle tire valve

Page 12

Claims (1)

1233894 6. Scope of patent application 1. A tire pressure detection system using ultra-wideband technology, which is used in a local environment of a vehicle, includes: At least one data acquisition terminal, which is respectively arranged on at least one vehicle tire valve. It includes: a pressure information acquisition unit connected to the tire valve of the vehicle to obtain a tire pressure signal; an analog / digital conversion unit connected to the pressure information acquisition unit to receive the tire pressure signal , And convert it into a digital tire pressure value signal; a data processing unit connected to the analog / digital conversion ¥ yuan, _ is for digital signal processing operation; a first ultra-wideband communication module connected to the data The processing unit and a first antenna receive an inquiry signal from a remote end through the first antenna, and transmit a reply signal. A main control terminal includes: a micro control unit, which performs digital signal processing. Processing calculation; a second ultra-wideband communication module connected to the micro control unit and a second antenna, transmitting the inquiry number through the second antenna, and Receiving the reply signal from the remote end; and an operation unit connected to the micro control unit, which can be controlled by the user * to transmit a control signal to the micro control unit 02 as described in item 1 of the scope of patent application The described tire pressure detection system using ultra-wideband technology further includes a memory unit connected to the micro control unit. Page 13 1233894 6. Scope of patent application It is used to store digital data. 3. The tire pressure detection system using ultra-wideband technology as described in item 1 of the scope of patent application, which further has a display unit connected to the micro control unit. 4. The tire pressure detection system using ultra-wideband technology as described in item 1 of the scope of patent application, wherein the data processing unit obtains the inquiry signal transmitted by the main control end through the first ultra-wideband communication module. 5. The tire pressure detection system using ultra-wideband technology as described in item 1 of the scope of the patent application, wherein the data processing unit receives the digital tire pressure value signal, and after arithmetic processing, passes the first ultra-wideband communication mode Group, transmitting the reply signal to the main control end. 6. The tire pressure detection system using ultra-wideband technology as described in item 1 of the scope of patent application, wherein the micro-control unit receives the control signal, and after processing, transmits through the second ultra-wideband communication module. The inquiry signal goes to the data acquisition end. 7. The tire pressure detection system using ultra-wideband technology as described in item 1 of the scope of patent application, wherein the micro-control unit obtains the response signal transmitted by the data acquisition terminal through the second ultra-wideband communication module. . 8. A tire pressure detection method using ultra-wideband technology, the steps of which include: performing an inflation action of at least one tire of the vehicle; using a tire pressure gauge to measure a tire pressure value signal of the tires; the device is at least A data acquisition terminal is on the air nozzles of the tires; set a serial number of the data acquisition terminals, and simultaneously set the tire pressure value signal of the tires to a tire pressure setting value, which is controlled by a main control terminal Page 14 1233894 6. The patent application scope stores the serial number and the tire pressure setting value in a memory unit; sends an inquiry signal to the data acquisition terminals by manipulating the main control terminal; receiving the data in sequence The tire pressure value signal obtained by the acquisition end; the calculation of the tire pressure value signal becomes the tire pressure setting value, which is controlled by the main control end; and displaying the tire pressure setting values on a display unit. 9. The tire pressure detection method using ultra-wideband technology as described in item 8 of the scope of patent application, wherein before sending an inquiry signal to the data acquisition terminal steps, the data acquisition terminals will enter a sleep state , Is a power saving mode. 10. The tire pressure detection method using ultra-wideband technology as described in item 8 of the scope of the patent application, wherein after transmitting an inquiry signal to the data acquisition end steps, a data acquisition during sleep is started The end step enables the data acquisition end to perform tire pressure value signal acquisition. Page 15