Direct and indirect compensation-type tire pressure monitoring system

Abstract

The invention discloses a direct and indirect compensation-type tire pressure monitoring system which comprises a wheel speed sensor, a transmitting module and a car-mounted BCM. The car-mounted BCM is connected with the wheel speed sensor and the transmitting module, and the transmitting module converts tire pressure and temperature information into high-frequency signals and transmits the high-frequency signals to the car-mounted BCM. According to the direct and indirect compensation-type tire pressure monitoring system, a single high-frequency signal direct-type transmitting mode and indirect-type tire speed measuring are adopted to calculate the tire pressure condition, and the wheel speed sensor, the transmitting module and the car-mounted BCM are connected into the compensation-typesystem jointly. The direct and indirect compensation-type tire pressure monitoring system has the advantages that (1) signal transmitting is more stable, and through compensation, real-time transmitting is conducted to achieve real-time monitoring during car operation; (2) power consumption is greatly reduced, and the service life of the sensor is prolonged; and (3) the misinformation condition isavoided from direct-transmitting to indirect-type compensation.

Description

technical field [0001] The invention relates to a monitoring system, in particular to a direct and indirect compensation tire pressure monitoring system. Background technique [0002] Tire pressure monitoring is a real-time automatic monitoring of tire pressure during driving, and an alarm for tire leakage and low air pressure to ensure driving safety. Data show that the ratio of car accidents caused by tire blowouts in vicious traffic accidents is as high as 70%, and among all the factors that can cause tire blowouts, insufficient tire pressure is the primary cause. This is not sensational. Even if you do not choose a model with tire pressure monitoring, you should pay more attention to the tires of your vehicle to avoid serious damage to people and cars. [0003] The existing spring pressure monitoring system can only transmit unilaterally at high frequency, and cannot know whether the signal has been received, and there are situations of multiple transmission or low rece...

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Problems solved by technology

[0003] The existing spring pressure monitoring system can only transmit unilaterally at high frequency, and cannot know whether the signal has been received, and there are situations of multiple transmission or low reception. In order to ensure real-time monitoring of tire pressure, the current technology adopts two types of direct single high frequency + indirect compensation The way to ensure the stability of signal reception, the false alarm rate is high, the power consumption is high

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