Low-power-consumption tire pressure monitoring device and method

Abstract

The invention relates to the technical field of tire pressure monitoring, in particular to a low-power-consumption tire pressure monitoring device and method.The low-power-consumption tire pressure monitoring device comprises an SoC integrated with a BLE transceiver and a sensing chip integrated with an LF receiver, the SoC is connected with the sensing chip through a communication bus, and the working mode of the tire pressure monitoring device comprises a storage mode and a standard mode; the LF receiver is used for monitoring an LF command in a storage mode and activating the sensing chip according to the LF command; the sensing chip is used for sending a wake-up signal to the SoC according to an LF command in a storage mode and collecting parameters in a standard mode, and the wake-up signal is used for switching the SoC from the storage mode to the standard mode; and the SoC is used for low-power-consumption state switching and data uploading in a standard mode. The parameter acquisition and data interaction frequency is reasonably designed, the tire pressure detection sensitivity is ensured, on the other hand, the current consumption is reduced, and the service life and the service time of equipment are prolonged.

Description

technical field [0001] The invention relates to the technical field of tire pressure monitoring, in particular to a tire pressure monitoring device and method with low power consumption. Background technique [0002] Since the tire pressure monitoring sensor system is placed in the tire, there are strict requirements on the volume and weight of the tire pressure monitoring sensor. Since the battery capacity is usually a fixed value, the design requirements for low power consumption are extremely high. At present, most common tire pressure monitoring sensor systems in the industry use 315MHz / 434MHz communication frequency. According to the public data of various manufacturers in the industry, the instantaneous current during radio frequency transmission is 6.8mA, and the data communication frequency is about 1 minute to send data. Therefore, The high radio frequency emission current results in a short service life of the tire pressure monitoring sensor system (usually 3-4 yea...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the contradiction between reducing power consumption and reporting lagging behind the actual value, and to overcome the problem that the tire pressure monitoring device in the prior art has a single working mode and adopts a fixed power consumption strategy, which leads to unsatisfactory power consumption reduction, and provides a A Low Power Consumption Tire Pressure Monitoring Device

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