RU183583U1 - Wheel module of tire pressure monitoring system - Google Patents

Abstract

Wheel module of a tire pressure monitoring system, consisting of a highly integrated system on a chip (SoC) in a 7 × 7 mm QFN case [1], a magnetic antenna [2] to implement some of the service functions of the module and output under an RF antenna for wireless data transmission. the device, depending on the conditions and the programmed algorithm, a highly integrated system on a chip [1] measures the state inside the wheel, if the algorithm determines the change in one of the parameters, a data frame is formed Then it is sent via the radio frequency interface to the output of the RF antenna [3]. For maintenance work, as well as programming the sensor without removing it from the wheel, a magnetic antenna is used, operating at a frequency of 125 kHz [2].

Description

This utility model relates to technical means for ensuring the safety of vehicles, in particular, to devices for monitoring tire pressure and air temperature and driving, and more particularly to a tire condition monitoring system.

From the existing level of technology is known SYSTEM FOR MONITORING TIRES [RU 2398680 C2, publ. 09/10/2010]. The described system for monitoring the status of the tires contains a remote measurement unit for the state of the tire installed in the tire, a central controller, a block of voice messages and a braking device using brakes. The remote unit for measuring the state of the tire measures the pressure and temperature inside the bus with a frequency of 5-20 Hz and generates signals containing the measured values of the parameters, which are then transmitted over the air to the central controller. The central controller receives over the air the signals containing information about the status of the bus, and processes them. As a result, he develops commands for issuing voice information messages and braking commands using brakes. After that, the commands are transmitted, respectively, to the block of voice messages and to the braking device using brakes.

The disadvantages of this technical solution are the limited number of wheel modules "RTPM" (up to 5 pieces), which makes it impossible to use such a system for commercial vehicles with a large number of tires. The inventors also point to the need to measure the state of the tire inside with a frequency of 5-20 Hz, explaining this by the speed of the "explosion" of the tire, but based on practical research, we concluded that the "explosion" of the tire is usually preceded by a period of improper operation, most often with incorrect pressure inside the tire, which can be detected by systems that measure the state of the tire with a lower frequency.

Closest to the claimed technical solution is the SYSTEM OF CONTROL CARS [RU 2425760 C1, publ. 08/10/2011]. The proposed system uses integrated pressure and temperature sensors, as well as a bi-directional communication channel. The functioning algorithm of the microprocessor-based pressure and temperature control system allows both in automatic mode and at the request of the vehicle driver to measure controlled parameters and transmit data to the display unit.

The disadvantages of this technical solution are the lack of an accelerometer in the wheel module, which provides control of a malfunction in the chassis and brake system of the vehicle associated with jamming or braking of the wheel.

The task to which the claimed utility model is directed is to expand the number of wheel condition parameters measured by the wheel module, as well as to increase the usability of the tire pressure monitoring system (TPMS, SKDSH) on vehicles with a large number of wheels.

This problem is solved due to the fact that in the claimed utility model “Wheel module of a tire pressure monitoring system”, a highly integrated system on a chip (SoC) is used in a 7 × 7 mm QFN body, which provides pressure, temperature, and acceleration measurements in two planes (centrifugal and axial) and voltages, with different measurement periods, depending on the conditions and operating algorithm, transmitting data to the receiver wirelessly.

The technical result provided by the given set of features is improved sensitivity and energy efficiency of the wheel module of the tire pressure monitoring system, high flexibility of the system based on these modules, when used on vehicles with various configurations and a large number of wheels.

The wheel module of the tire pressure monitoring system consists of a highly integrated system on a chip (SoC) in a 7 × 7 mm QFN housing [1], a magnetic antenna [2] for implementing some of the module's service functions, and output under an RF antenna for wireless data transmission .

A general view of the wheel module is shown in FIG. one.

The device operates as follows, depending on the conditions and the programmed algorithm, a highly integrated system on a chip [1] measures the state inside the wheel, if the algorithm determines a change in one of the parameters, a data frame is formed and then it is sent via the RF interface to the output of the RF antenna [3]. For maintenance work, as well as programming the sensor without removing it from the wheel, a magnetic antenna is used, operating at a frequency of 125 kHz [2].

Claims (1)

Wheel module of a tire pressure monitoring system, characterized in that a highly integrated system on a chip (SoC) is installed on a printed circuit board in a 7 × 7 mm QFN package, which measures pressure, temperature, acceleration in two planes (centrifugal and axial) and voltage with different frequencies depending on the conditions and algorithm of operation, transmitting data wirelessly.

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