Automotive tire pressure monitoring system calibration instrument and calibration method

Abstract

The invention provides a pressure monitoring system marking instrument of an automobile tyre and a marking method thereof. The marking instrument includes two parts; one is a tyre pressure sensor and the other is a diagnosing marking device; the tyre sensor includes a central control module 2, a sensor 1, a RF transmitting circuit and a lower frequency receiving circuit; the tyre sensor is connected with the lower frequency receiving circuit and the central control module 2; the central control module 2 is connected with the RF transmitting circuit and the sensor 1; the marking instrument consists of an SCM, the lower frequency transmitting circuit, the RF receiving circuit, a human-computer interface and a communication interface; the SCM is connected with the lower frequency transmitting circuit; the tyre sensor is connected with the RF receiving circuit which is connected with the SCM; the SCM is connected with the human-computer interface and the communication interface. The invention can simply realize the diagnosing and the marking of the pressure monitoring system sensor of the tyre, is suitable for the automobile types of any collocation, is not interfered by the tyre pressure monitoring system on other automobiles and can not affect other automobiles.

Description

(1) Technical field [0001] The invention relates to an automobile tire pressure monitoring technology, in particular to a calibration instrument for an automobile tire pressure monitoring system. (2) Background technology [0002] At present, the sensor calibration of the automobile tire pressure monitoring system mainly adopts the following two methods: [0003] 1. For the model and standard used, the one-time setting is completed at the factory, and it will not be changed or changed later. [0004] 2. Add a low-frequency wake-up channel to the system, such as figure 1 shown. This calibration method requires a dedicated control module. When calibration is required, the control module sends commands and data to the tire sensor through the low-frequency wake-up coil, and the tire sensor performs corresponding processing after receiving the calibration command. Return to the control module, thereby completing the calibration task. [0005] 3. Change the radio frequency com...

AI Technical Summary

Problems solved by technology

For the situation where the vehicle tire pressure monitoring system is installed after the vehicle leaves the factory, it is difficult to install a low-frequency wake-up coil

[0010] 4. When the control module sends a calibration command to the tire pressure sensor, it may affect other vehicles stored nearby

cause error handling and response

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