Tire pressure sensing module circuit

Abstract

The invention discloses a tire pressure sensing module circuit. The tire pressure sensing module circuit comprises an inductor L, capacitors C1, C2, C3 and C4, resistors R1, R2, R3, R4 and R5, an NPX chip, a T5754 radio frequency chip, a crystal oscillator Y and a triode Q, wherein the inductor L is connected with pins 12 and 13 of the NPX chip, respectively, and the capacitor C1 and the resistor R1 are connected with the inductor L in parallel; a pin 7 of the NPX chip is simultaneously connected to one ends of the capacitors C2 and C4, a pin 9 is connected to a pin 2 of the T5754 radio frequency chip, a pin 10 is connected to a pin 8 of the T5754 radio frequency chip, and a pin 11 is connected to a base electrode of the triode Q; one ends of the resistors R2, R3 and R4 are sequentially connected to the pins 9, 10 and 11 of the NPX chip, and the other ends are connected to the ground; pins 3 and 4 of the T5754 radio frequency chip are connected to antennas through a matching network, a pin 5 is connected to one end of the crystal oscillator Y, and a pin 6 is connected to a power supply VCC; an emitting electrode of the triode Q is connected to the ground, and a collecting electrode is connected to the other end of the crystal oscillator Y; and the other end of the capacitor C2 is connected to the power supply VCC, and the other end of the capacitor C4 is connected to the other end of the crystal oscillator Y. According to the tire pressure sensing module circuit, the detection precision of pressure and temperature data of a tire is substantially improved.

Description

technical field [0001] The invention relates to a tire pressure sensing module circuit. Background technique [0002] Tires are an important part of the driving mechanism of a car. As an important supporting element and walking element, the tire not only bears the entire weight of the car, but also provides propulsion for the car to move forward, and at the same time plays a role in easing the impact of the ground. Tires play a key role in the handling stability, smoothness, safety, comfort and fuel economy of the car. Therefore, it is very important to monitor tire pressure, temperature and other data in real time to ensure driving safety when driving or stationary. [0003] The detection of tire pressure and temperature data is mainly realized by tire pressure sensors. However, the existing tire pressure sensors have the defect of low detection accuracy due to unreasonable circuit design. Contents of the invention [0004] In order to overcome the deficiencies in the p...

AI Technical Summary

Problems solved by technology

[0003] The detection of tire pressure and temperature data is mainly realized by tire pressure sensors. However, the existing tire pressure sensors have the defect of low detection accuracy due to unreasonable circuit design.

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