RU2741662C1 - Vehicle tires state monitoring system - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to wireless means of monitoring objects, specifically to a system for monitoring the state of vehicle tires. Vehicle tire condition monitoring system comprises a computer unit of the vehicle including a receiving/transmitting module for receiving data, their processing and transmission of information on the state of buses and a visualization module for outputting the obtained information, a measuring module for the vehicle buses, configured to transmit data to the receiving-transmitting module and including a pressure measurement sensor, a temperature measurement sensor, a microwave sensor for measuring tire tread height and a three-axis accelerometer for monitoring the trajectory of the tire, as well as measuring vibration and acceleration. Computer unit is configured to output a notice on pressure deviation, temperature or path of the bus more than 12.5 % of the base value, as well as output of notification on absence of data transmission from measuring module.

EFFECT: higher safety of vehicle operation.

13 cl, 4 dwg

Description

The invention relates to wireless means of monitoring objects, namely, to a system for monitoring the status of tires of vehicles (TS).

In the prior art, a vehicle tire condition monitoring system is known (RU 2495762 C1, 10/20/2013), which includes a vehicle computer unit containing a visualization module for displaying the received information and a transceiver module for receiving data, processing and transmitting information, at least one a measuring module for vehicle tires, containing a pressure sensor and configured to transmit measured data to at least one transmitting-receiving module. The main disadvantage of the system is the small number of measured parameters that characterize the condition of the tires.

A vehicle tire condition monitoring system (RU 2659120 C1, 06/28/2018) was chosen as a prototype, which includes at least one vehicle computer unit containing a visualization module for displaying the received information about the status of the tires and a transceiver module for receiving data, processing and transmitting information about the state of tires, at least one measuring module for vehicle tires, configured to transmit data to at least one receiving-transmitting module and including a pressure measuring sensor, a temperature measuring sensor and a three-axis accelerometer for monitoring the trajectory of the tire, and also a remote server for receiving information from one or several computer units, storing it and providing access to it. The disadvantages of the prototype are the lengthy process of integrating the measuring modules into the system, the low functionality of the system and the lack of information content.

The objective of the present invention is to create a universal tire health monitoring system suitable for any type of vehicle having an increased number of readable parameters, an increased number of data transmission channels and a simplified possibility of adding and registering sensors in the system in accordance with their actual location on the vehicle, as well as the ability to form notifications about critical bus conditions.

The technical result is to improve the operational safety of any type of vehicle.

The specified result is achieved in a vehicle tire condition monitoring system containing at least one vehicle computer unit, including a transceiver module for receiving data, processing and transmitting information about the condition of the tires and a visualization module for outputting the received information, at least one measuring module for vehicle tires, capable of transmitting data to at least one transceiver module and including a pressure measuring sensor from 0.1 to 14 bar, a temperature measuring sensor from -40 to + 120 ° C, a microwave sensor for measuring height tire tread from 0.5 to 12 mm and a three-axis accelerometer for monitoring the trajectory of the tire, as well as measuring vibration and accelerations from 0.1 to 15 g. At the same time, at least one computer unit is configured to output a notification about the deviation of pressure, temperature or movement trajectory of at least one tire by more than 12.5% of the base value, as well as output a notification about the absence of data transmission from at least one measuring module.

In a particular embodiment of the invention, at least one computer unit is configured to output an additional notification about the deviation of pressure, temperature or trajectory of movement of at least one tire by more than 25% from the base value.

Also, at least one computer unit is configured to output additional notification about the deviation of pressure, temperature or trajectory of movement of at least one tire by more than 50% from the base value.

At least one computer unit is configured to store a baseline value of tire pressure, temperature and tread height for each measuring module.

The system may contain a remote server capable of receiving information about the state of the tires from at least one computer unit, storing it and providing access to it, as well as with the possibility of generating and transmitting reports on the received information to at least one computer unit, SMS and E-Mail notifications.

The remote server can be configured to track the location of at least one computer unit using GLONASS or GPS and LBS.

The system may contain at least one RFID tag configured to be placed in the inner space of the tire, inside the cord or on the outer surface of the tire, and at least one RFID tag reader for identifying tires with a measuring module, tracking and monitoring their operation, made stationary and / or manual with the ability to transmit data to at least one computer unit and / or remote server via one or more of the following channels: GSM, GPRS, 3G, LTE, Wi-Fi, Bluetooth, LoRa and NB-IoT.

In this case, a manual reader of RFID tags is made with the ability to read them through one or more channels operating at a frequency of LF 125 kHz, NFC 13.56 MHz, RF 315 MHz, 433 MHz or UHF 860-960 MHz, and a stationary reader - through one or multiple channels operating at RF 315 MHz, 433 MHz or UHF 860-960 MHz.

At least one measuring module is made with a replaceable or non-replaceable battery and can be placed on the tire valve from the outside, inside, inside the tire cord, on the wheel rim, or on the inner surface of the tire.

The computer unit includes one or more devices of the following: a smartphone, a tablet computer, a vehicle on-board computer, a handheld programmer, a GLONASS tracker, a GPS tracker, a GSM modem, a display, and is configured to transmit information about the state of the tires through one or more channels of the following: GSM, GPRS, 3G, LTE, Wi-Fi, Bluetooth, LoRa, NB-IoT.

At least one measuring module is configured to transmit data over one or more of the following channels: LF 125 kHz, NFC 13.56 MHz, RF 315 MHz, 433 MHz, UHF 860-960 MHz, Bluetooth 2.4 GHz.

The system may contain at least one repeater for receiving and transmitting data between at least one measuring module and at least one computer unit.

At least one measuring module is configured to record and transmit an identification number characterizing the location of the module on the vehicle.

Due to the installation of measuring modules containing the mentioned sensors, which are made with the ability to measure many parameters in a wide range, as well as due to notifications of critical deviations of the measured parameters of tires, an increase in the safety of operation of a vehicle of any type is achieved: passenger, truck, motorcycle, as well as special equipment.

The proposed solution is illustrated using Figures 1-4.

Figure 1 shows an example of the implementation of the proposed monitoring system.

Figure 2a shows a diagram of the formation of the identification number of the measuring module in the system in accordance with its real location on the chassis of the vehicle.

Figure 2b shows a diagram of the formation of the identification number of the measuring module in the system in accordance with its real location on the chassis of the vehicle trailer.

Figure 3a shows a measuring module for mounting on a wheel rim inside a tire.

Figure 3b shows a measuring module for installation on the inner surface of the tire.

Figure 3c shows a measuring module for installation outside the tire on the pump valve.

Figure 3d shows a measuring module for installation inside the tire on the pump valve.

Figure 4a shows a diagram of the arrangement of RFID tags on bias-type tires.

Figure 4b shows the layout of RFID tags on radial types of tires.

The system for monitoring the condition of the tires of vehicles contains at least one computer unit 1 of the vehicle, including a receiving-transmitting module for receiving data, processing and transmitting information about the condition of the tires and a visualization module for displaying the received information, and also contains at least one measuring module 2 for vehicle tires, including a pressure sensor in the range from 0.1 to 14 bar, a temperature sensor in the range from -40 to + 120 ° C, a microwave sensor for measuring the tire tread height in the range from 0.5 to 12 mm and a three-axis accelerometer for monitoring the trajectory of the tire, as well as measuring vibration and acceleration in the range from 0.1 to 15 g. This configuration of the measuring module significantly increases the operational safety of any type of vehicle.

The mentioned information concerns the condition of the tires and represents the processed data by the transmit-receive module of the computer unit 1, which were received from one or more measuring modules 2. The information includes the values of pressure and temperature, the number of revolutions, the values and number of critical accelerations, the tread height and the angle value deviations of the plane of rotation of the wheel from the vertical.

Within the framework of the present invention, a computer unit 1 is understood to mean one device or a collection of several devices connected to each other by wireless or wired channels. As these devices can be used vehicle on-board computer, smartphone, tablet computer, handheld programmer, GLONASS tracker, GPS tracker, GSM modem, display or any other suitable device or several devices. The main thing for such a device is the presence of a visualization module, such as a display, for displaying information and a receiving-transmitting module for receiving data, processing them - due to the presence of a computing element - and transmitting information through one or more communication channels selected from the following: GSM, GPRS, 3G, LTE, Wi-Fi, Bluetooth, LoRa, NB-IoT. So, the receiving-transmitting module can be made as a separate device or be built into another one with a display.

The measuring module 2 is made with both a replaceable and a non-replaceable battery and is a sensor unit configured to be placed inside the tire cord, on the wheel disk (Fig. 3a), on the inner surface of the tire (Fig. 3b), or on the tire valve with the outer side (Fig.3c) or the inner (Fig.3d). Each measuring module 2 is manufactured with the ability to transmit data over one or more of the following channels: LF 125 kHz, NFC 13.56 MHz, RF 315 MHz, 433 MHz, UHF 860-960 MHz, Bluetooth 2.4 GHz, at least one transceiver module, and is also manufactured with the ability to record and transmit an identification number that characterizes the location of module 2 on the vehicle. The identification number consists of two characters, where the first character corresponds to the number of the axle, and the second to the number of the row of the wheel arrangement (Figs. 2a-2b). Figure 2a shows a diagram for a vehicle on one chassis, figure 2b shows a diagram for a trailer (semi-trailer).

The display interface of the computer unit 1 allows not only displaying information about the condition of the wheels, but also configuring the system, assigning the location of the measuring modules 2 to the vehicle, providing access to the archive of all collected information about the condition of tires, the ability to generate reports for a selected period, the ability to notify about critical events. So, for example, the computer unit 1 is configured to output three notifications - according to an advantageous embodiment of the invention - in cases of detecting a deviation of pressure, temperature or motion path of at least one tire by more than 12.5% from the base value for the first notification; deviations of more than 25% for the second notification; and deviations of more than 50% for the third notification. The use of these values of deviations to display a notification of a critical condition increases the safety of vehicle operation. The base value of any measured parameter from the above, except for the trajectory of the tire, which is considered as the angle between the vertical and the plane of rotation of the wheel, is set by the user and stored in the computer unit 1 for each used measuring module 2 separately in accordance with the type of vehicle, for example, for a passenger car, the base pressure can be 2.1-2.3 bar, for a truck - 7.5-8.5 bar.

As for the tire tread height, its critical value is determined for each type of vehicle used, for example, when the tread height reaches 1.6-2 mm for passenger vehicles or 3-4 mm for cargo vehicles, computer unit 1 also issues a corresponding notification ... Also, block 1 can display notifications about the absence or loss of data transmission from at least one measuring module 2.

It should be noted that the display of notifications about critical events implies the issuance of visual and / or sound messages to the user, which differ from the messages issued during normal, normal operation with normal sensor readings.

In some embodiments of the invention, the monitoring system includes a remote server 3, aka a cloud service, to obtain information about the state of the tires from at least one vehicle, namely from one or more computer units 1, store it and provide access to it, when the remote server 3 is configured to generate and transmit to at least one computer unit 1 reports on the information received, as well as SMS and E-Mail notifications. Also, remote server 3 can send information and notifications to other computer units 1, not tied to a specific vehicle, but having access to the system. In addition, remote server 3 can track the actual location of one or more vehicles by fixing coordinates at the reading point using, for example, a smartphone, tablet computer, tracker and GLONASS satellite constellations, GPS and LBS technology (Location-based service).

In an advantageous embodiment, the monitoring system includes at least one RFID tag adapted to be placed in the inner space of the tire (Fig. 4a, pos. 5), inside the cord (Figs. 4a-4b, pos. 6) or on the outer surface of the tire ( 4b, item 7), and at least one RFID-tag reader for identifying tires with a measuring module, tracking them and monitoring operation, made stationary and / or manual with the ability to transmit data to at least one computer unit 1 and / or remote server 3 via one or more of the following channels: GSM, GPRS, 3G, LTE, Wi-Fi, Bluetooth, LoRa and NB-IoT.

The RFID-tag reader is made stationary for placement, for example, at the entrance to a vehicle fleet for automatic recognition of a large number of vehicles with the appropriate system, and / or manual for positioning on a specific vehicle. In this case, a manual reader of RFID tags is made with the ability to read them through one or more channels operating at a frequency of LF 125 kHz, NFC 13.56 MHz, RF 315 MHz, 433 MHz or UHF 860-960 MHz, and a stationary reader - through one or multiple channels operating at RF 315 MHz, 433 MHz or UHF 860-960 MHz.

RFID tags are used to identify tires with a measuring module, control the operating period and the disposal process, as well as suppress attempts to replace the tire and transfer the measuring module to a fake tire.

The monitoring system may include at least one repeater 4 to enhance communication between system elements. The repeater 4 is placed on the chassis of the vehicle and receives data from at least one measuring module 2 and redirects it to the transmit-receive module of the computer unit 1, or to another repeater 4. The number of repeaters 4 is not limited, they can be used on trailers and semi-trailers.

An example of the implementation of the monitoring system according to the present invention is shown in Fig. 1. Measurement modules 2 are installed on each tire of a cargo vehicle with a trailer. Two repeaters 4 are used. The computer unit 1 of the TS includes a smartphone, a handheld programmer, an on-board computer with a dashboard, a display equipped with a receiving-transmitting module, and a GPS tracker. The second repeater is connected via CAN 1939, RS 232 and 485 wired connections to the on-board computer, display and GPS tracker. Data from measuring modules 2 are transmitted to repeaters 4, it is possible to transfer directly to a smartphone and a handheld programmer via Bluetooth. The GPS tracker transmits information about the state of the tires to a remote server 3, which can be accessed by other computer units 1.

The proposed invention is implemented by known methods due to devices and elements known in the prior art.

The invention works as follows.

One or more measuring modules are installed on a valve, disc or the inner surface of a wheel tire. An RFID tag is placed in the inner space of the tire, inside the cord, or on the outer surface of the tire.

The vehicle wheels equipped with measurement modules and RFID tags are registered in the monitoring system. For this, in the process of reading the measuring modules, for example, with a smartphone or a handheld programmer using one or more of the following channels: LF 125 kHz, NFC 13.56 MHz, RF 315 MHz, 433 MHz, UHF 860-960 MHz, Bluetooth 2.4 GHz, they are assigned a two-character bus identification number corresponding to this module, the number is written into the system. The RFID tags are read with a handheld reader and each RFID tag on the bus is associated with one or more measurement modules installed on it. This information is stored in the computer unit of the vehicle and is transmitted to a remote server with the determination of geolocation at a specific point in time by means of a transmit-receive module of the computer unit or a hand-held reader of RFID tags.

In the display interface of the computer unit, you continue to configure the monitoring system by adding or removing tires, setting the values of pressure, temperature and tread height of the tire, characteristic of the vehicle used. The frequency of data transmission from the measuring modules is set in the system. The final settings are also transferred to the remote server.

During the operation of the vehicle, through the receiving-transmitting module of the computer unit, they receive data from the measuring modules, process them, give information about the state of the tires on the display of the computer unit, and also transmit it to a remote server. Such information is the values of pressure, temperature, vibration, tire tread height, tire acceleration values and the corresponding RFID tag number. The mentioned information is also stored in the computer unit and in a remote server for further use and receiving reports for the period of interest, while the information is stored in the computer unit for no more than 90 days, and on the server for more than 90 days.

Through a remote server, information about this vehicle is received and other computer units that are not related to the vehicle being operated, but have access to the monitoring system.

The remote server allows you to receive, store and organize information received from one or more vehicles about the status of monitored buses, as well as generate SMS and E-Mail notifications, reports on individual or group accounts, vehicle types, specific parameters and / or time period with access to information by using a password to enter the user's personal account. The movement of one or several vehicles with measuring modules and a computer unit, including a GLONASS tracker and / or a GPS tracker, is monitored through the server.

In the event of a deviation of pressure, temperature or trajectory of movement of at least one tire from the base value by 12.5%, 25% or 50%, notify about this event on the display of one or several computer units connected to the system, including via a remote server. Likewise, cases of loss of connection or lack of data transmission from one or more measuring modules are notified.

This monitoring system has been tested in practice and allows you to use a set of measuring modules of various designs for installation inside or outside the tires of passenger cars, trucks, buses, motorcycle, aviation or heavy vehicles and special equipment, allows you to control an increased number of readout parameters of tires, has a simplified ability to add and prescribe in the system of measuring modules in accordance with their actual location on the vehicle, and also allows generating notifications about critical bus conditions and transmitting information to a remote monitoring server.

Thus, the use of the proposed invention improves the safety of vehicle operation.

Claims (15)

1. A system for monitoring the condition of tires of vehicles, containing at least one computer unit of a vehicle, including a receiving-transmitting module for receiving data, processing and transmitting information about the condition of the tires and a visualization module for displaying the received information, at least one measuring module for vehicle tires, configured to transmit data to at least one receiving-transmitting module and including a pressure measuring sensor from 0.1 to 14 bar, a temperature measuring sensor from -40 to + 120 ° C, a microwave sensor for measuring the tire tread height from 0.5 to 12 mm and a three-axis accelerometer for monitoring the trajectory of the tire, as well as measuring vibration and accelerations from 0.1 to 15 g, wherein at least one computer unit is configured to output a notification about a deviation of pressure, temperature or a trajectory of the tire by more than 12.5% from the base value, as well as output a notification about the absence of data transmission from at least one measuring module. 2. The system of claim. 1, characterized in that at least one computer unit is configured to output additional notification of the deviation of pressure, temperature or trajectory of the tire by more than 25% of the base value. 3. The system according to claim 1 or 2, characterized in that at least one computer unit is configured to output an additional notification about the deviation of pressure, temperature or trajectory of the tire by more than 50% of the base value. 4. The system of claim. 1, characterized in that at least one computer unit is configured to store the base value of the pressure, temperature and tire tread height for each measuring module. 5. The system according to claim 1, characterized in that it contains a remote server configured to obtain information about the state of the tires from at least one computer unit, store it and provide access to it, as well as with the possibility of generating and transmitting to at least at least one computer block of reports on received information, SMS and E-Mail notifications. 6. The system of claim. 1, characterized in that the remote server is configured to track the location of at least one computer unit using GLONASS or GPS and LBS. 7. The system according to claim 1 or 5, characterized in that it contains at least one RFID tag configured to be placed in the inner space of the tire, inside the cord or on the outer surface of the tire, and at least one RFID tag reader for identification of tires with a measuring module, their tracking and control of operation, made stationary and / or manual with the possibility of transmitting data to at least one computer unit and / or a remote server via one or more of the following channels: GSM, GPRS, 3G, LTE, Wi-Fi, Bluetooth, LoRa and NB-IoT. 8. The system according to claim 7, characterized in that the hand-held reader of RFID tags is capable of reading them through one or more channels operating at a frequency of LF 125 kHz, NFC 13.56 MHz, RF 315 MHz, 433 MHz or UHF 860 -960 MHz, and a stationary reader - through one or more channels operating at RF 315 MHz, 433 MHz or UHF 860-960 MHz. 9. The system of claim. 1, characterized in that at least one measuring module is made with a replaceable or non-replaceable battery and can be placed on the tire valve from the outside, inside, inside the tire cord, on a wheel disk or on the inner surface of the tire. 10. The system according to claim 1, characterized in that the computer unit includes one or more devices from the following: smartphone, tablet computer, vehicle on-board computer, handheld programmer, GLONASS tracker, GPS tracker, GSM modem, display, and is made with the ability to transmit information about the state of the tires over one or more of the following channels: GSM, GPRS, 3G, LTE, Wi-Fi, Bluetooth, LoRa, NB-IoT. 11. The system according to claim 1, characterized in that at least one measuring module is configured to transmit data over one or more channels of the following: LF 125 kHz, NFC 13.56 MHz, RF 315 MHz, 433 MHz, UHF 860 -960 MHz, Bluetooth 2.4 GHz. 12. The system according to claim 1, characterized in that it contains at least one repeater for receiving and transmitting data between at least one measuring module and at least one computer unit. 13. The system of claim. 1, characterized in that at least one measuring module is configured to record and transmit an identification number characterizing the location of the module on the vehicle.

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