Tire pressure monitoring system and signal matching device thereof

Abstract

The invention discloses a tire pressure monitoring system and a new signal matching device thereof. The signal matching device serves as an intermediate learning device in the tire pressure monitoringsystem and is used for debugging the matching between a central monitor and a sensor transmitter. The device comprises the following components: a key-press unit which provides an acquisition functional key for a user to control a wake-up unit and provides a learning functional key for the user to control a learning unit; the wake-up unit which is controlled by the acquisition functional key andgenerates an inducing signal to induce the sensor transmitter to transmit a real-time signal containing an identity feature code; an extraction unit which is used for capturing the real-time signal, extracting the identity feature code therein and storing the identity feature code; the leaning unit which is controlled by the learning functional key, generates a learning signal containing the identity feature code, and transmits the learning signal to the central monitor; and a control logic which plays a role in entire coordination control. The invention provides a new signal matching plan forthe tire pressure monitoring system so that an operator is unnecessary to operate back and forth for a plurality of times between a cab and a tire, the complicity of signal matching is simplified, and the process of the signal matching becomes simpler.

Description

【Technical field】 [0001] The present invention relates to a tire pressure monitoring system (TPMS), in particular, to signal matching between a sensor transmitter mounted on a tire and a function controller mounted on a vehicle body to establish communication between them Basic signal matching device. 【technical background】 [0002] TPMS, the abbreviation of Tire Pressure Monitoring System, translated as Tire Pressure Monitoring System, is used to monitor the main parameters such as the pressure and temperature of vehicle tires in real time, so as to ensure that the pressure and temperature of tires are maintained within the standard range and reduce the The probability of blown tires and destroyed tires can reduce fuel consumption and the damage rate of vehicle components. [0003] TPMS includes multiple high-sensitivity sensor transmitters installed on each tire, real-time monitoring of tire pressure, temperature and other data when driving or stationary, and transmits wi...

AI Technical Summary

Problems solved by technology

This method has the following problems: when the central monitor is adjusted in the cab to enter the learning mode, the operator needs to run out of the cab, and then install the sensor transmitter on the valve of the tire to inflate and deflate to induce To send the learning signal, wait for the central monitor to receive the learning signal. After the sensor transmitter is paired successfully, enter the cab and adjust the central monitor to enter the learning mode to pair with another sensor transmitter. The debugger will undoubtedly run back and forth. too much trouble

The defect brought by this method is: in the same batch of sensor transmitters, there cannot be more than two sensor transmitters with the same last 3-digit ID code, which will bring trouble to the factory production, and there is also a central monitoring Potential for sensors to mislearn from other on-vehicle sensor transmitters

However, this method still cannot overcome the problem that the last three digits of the ID codes of different sensor transmitters are the same. Although the recognition rate is improved, it undoubtedly increases the complexity of the operation.

[0012] In addition, all the above methods are not suitable for the maintenance of tires during use, that is, when they are installed on the car, and can only be relatively suitable for the initial installation of tires. Therefore, they still cannot provide convenience for the regular maintenance of TPMS

Due to the defects of the above-mentioned technologies, the specialization of TPMS is required, and it cannot be maintained and installed in a popular way. For example, when the user purchases new tires and installs them, the matching between the sensor transmitter and the central monitor must be performed after the tires are installed. Professionals carry out

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